Only change the announce server when upgrading config version

This reverts commit 8e699f8243.

.gitignore

@@ -1,12 +1,11 @@
 syncthing
 syncthing.exe
-stcli
-stcli.exe
 *.tar.gz
 *.zip
 *.asc
 *.sublime*
-discosrv
-stpidx
 .jshintrc
 coverage.out
+files/pidx
+bin
+perfstats*.csv

.travis.yml

@@ -6,15 +6,13 @@ go:
 install:
    - export PATH=$PATH:$HOME/gopath/bin
    - ./build.sh setup
-   - go get code.google.com/p/go.tools/cmd/cover
-   - go get github.com/mattn/goveralls
 
 script:
    - ./build.sh test-cov
 
 after_success:
-   - goveralls -coverprofile=coverage.out -service=travis-ci -package=calmh/syncthing -repotoken="$COVERALS_TOKEN"
+   - goveralls -coverprofile=coverage.out -service=travis-ci -package=syncthing/syncthing -repotoken="$COVERALLS_TOKEN"
 
 env:
    global:
-      secure: "zEV2h2XtKHNLVdXJjM4LA/VjMfLVydm6goF+ARit+nOSGxGoH7f7jIdzJzhxgh7shKG93q61eLO1Tug+WBMYB2EpBuYnTB5AIMYhCDwNI8C4uBV6c3brHfcrie7MASNao8TID2QScASKNFFWvjv/i1Ccn5ztxdcQuhSsNjGZp8A="
+      secure: "TSPJDsokGCQhKLjgG3c58qHn8Qxhh4zEkWFf0XIOOY2nlDVzdgXDsC+Nq0YaP4106Ee4FgkSefsUTQV5lq/IyYW8elgqlgghjOtOi6RJa14eIS9Yy5Bkx6MXn0QfZX/lG+sy42pKSNk43y9GWx/qrt4nkfTtTvI5cXgwDGYdmX8="

CONTRIBUTING.md

@@ -11,7 +11,8 @@ Commons Attribution 4.0 International License. You retain the copyright
 to code you have written.
 
 When accepting your first contribution, the maintainer of the project
-will ensure that you are added to the CONTRIBUTORS file.
+will ensure that you are added to the CONTRIBUTORS file. You are welcome
+to add yourself as a separate commit in your first pull request.
 
 ## Building
 

CONTRIBUTORS

@@ -1,6 +1,8 @@
 Aaron Bieber <qbit@deftly.net>
 Andrew Dunham <andrew@du.nham.ca>
+Audrius Butkevicius <audrius.butkevicius@gmail.com>
 Arthur Axel fREW Schmidt <frew@afoolishmanifesto.com>
+Ben Sidhom <bsidhom@gmail.com>
 Brandon Philips <brandon@ifup.org>
 James Patterson <jamespatterson@operamail.com>
 Jens Diemer <github.com@jensdiemer.de>

Godeps/Godeps.json

@@ -1,53 +1,55 @@
 {
-	"ImportPath": "github.com/calmh/syncthing",
+	"ImportPath": "github.com/syncthing/syncthing",
 	"GoVersion": "go1.3",
 	"Packages": [
-		"./cmd/syncthing",
-		"./cmd/assets",
-		"./discover/cmd/discosrv"
+		"./cmd/..."
 	],
 	"Deps": [
 		{
 			"ImportPath": "bitbucket.org/kardianos/osext",
-			"Comment": "null-9",
-			"Rev": "364fb577de68fb646c4cb39cc0e09c887ee16376"
+			"Comment": "null-13",
+			"Rev": "5d3ddcf53a508cc2f7404eaebf546ef2cb5cdb6e"
 		},
 		{
 			"ImportPath": "code.google.com/p/go.crypto/bcrypt",
-			"Comment": "null-185",
-			"Rev": "6478cc9340cbbe6c04511280c5007722269108e9"
+			"Comment": "null-213",
+			"Rev": "aa2644fe4aa50e3b38d75187b4799b1f0c9ddcef"
 		},
 		{
 			"ImportPath": "code.google.com/p/go.crypto/blowfish",
-			"Comment": "null-185",
-			"Rev": "6478cc9340cbbe6c04511280c5007722269108e9"
+			"Comment": "null-213",
+			"Rev": "aa2644fe4aa50e3b38d75187b4799b1f0c9ddcef"
 		},
 		{
 			"ImportPath": "code.google.com/p/go.text/transform",
-			"Comment": "null-81",
-			"Rev": "9cbe983aed9b0dfc73954433fead5e00866342ac"
+			"Comment": "null-89",
+			"Rev": "df15baaf13e3f62b6b7a901e74caa3818a7c0a7c"
 		},
 		{
 			"ImportPath": "code.google.com/p/go.text/unicode/norm",
-			"Comment": "null-81",
-			"Rev": "9cbe983aed9b0dfc73954433fead5e00866342ac"
+			"Comment": "null-89",
+			"Rev": "df15baaf13e3f62b6b7a901e74caa3818a7c0a7c"
 		},
 		{
-			"ImportPath": "github.com/codegangsta/inject",
-			"Rev": "9aea7a2fa5b79ef7fc00f63a575e72df33b4e886"
+			"ImportPath": "code.google.com/p/snappy-go/snappy",
+			"Comment": "null-15",
+			"Rev": "12e4b4183793ac4b061921e7980845e750679fd0"
 		},
 		{
-			"ImportPath": "github.com/codegangsta/martini",
-			"Comment": "v0.1-142-g8659df7",
-			"Rev": "8659df7a51aebe6c6120268cd5a8b4c34fa8441a"
+			"ImportPath": "github.com/bkaradzic/go-lz4",
+			"Rev": "77e2ba877bde9da31213bec75dbbe197fa507c21"
 		},
 		{
-			"ImportPath": "github.com/golang/groupcache/lru",
-			"Rev": "d781998583680cda80cf61e0b37dd0cd8da2eb52"
+			"ImportPath": "github.com/calmh/xdr",
+			"Rev": "694859acb207675085232438780db923ceb43e96"
 		},
 		{
 			"ImportPath": "github.com/juju/ratelimit",
-			"Rev": "cbaa435c80a9716e086f25d409344b26c4039358"
+			"Rev": "f9f36d11773655c0485207f0ad30dc2655f69d56"
+		},
+		{
+			"ImportPath": "github.com/syndtr/goleveldb/leveldb",
+			"Rev": "c5955912e3287376475731c5bc59c79a5a799105"
 		},
 		{
 			"ImportPath": "github.com/vitrun/qart/coding",

Godeps/_workspace/src/bitbucket.org/kardianos/osext/osext_plan9.go

@@ -4,13 +4,17 @@
 
 package osext
 
-import "syscall"
+import (
+    "syscall"
+    "os"
+    "strconv"
+)
 
 func executable() (string, error) {
-	f, err := Open("/proc/" + itoa(Getpid()) + "/text")
-	if err != nil {
-		return "", err
-	}
-	defer f.Close()
-	return syscall.Fd2path(int(f.Fd()))
+    f, err := os.Open("/proc/" + strconv.Itoa(os.Getpid()) + "/text")
+    if err != nil {
+        return "", err
+    }
+    defer f.Close()
+    return syscall.Fd2path(int(f.Fd()))
 }

Godeps/_workspace/src/bitbucket.org/kardianos/osext/osext_sysctl.go

@@ -14,7 +14,7 @@ import (
 	"unsafe"
 )
 
-var startUpcwd, getwdError = os.Getwd()
+var initCwd, initCwdErr = os.Getwd()
 
 func executable() (string, error) {
 	var mib [4]int32
@@ -26,20 +26,20 @@ func executable() (string, error) {
 	}
 
 	n := uintptr(0)
-	// get length
-	_, _, err := syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&mib[0])), 4, 0, uintptr(unsafe.Pointer(&n)), 0, 0)
-	if err != 0 {
-		return "", err
+	// Get length.
+	_, _, errNum := syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&mib[0])), 4, 0, uintptr(unsafe.Pointer(&n)), 0, 0)
+	if errNum != 0 {
+		return "", errNum
 	}
-	if n == 0 { // shouldn't happen
+	if n == 0 { // This shouldn't happen.
 		return "", nil
 	}
 	buf := make([]byte, n)
-	_, _, err = syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&mib[0])), 4, uintptr(unsafe.Pointer(&buf[0])), uintptr(unsafe.Pointer(&n)), 0, 0)
-	if err != 0 {
-		return "", err
+	_, _, errNum = syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&mib[0])), 4, uintptr(unsafe.Pointer(&buf[0])), uintptr(unsafe.Pointer(&n)), 0, 0)
+	if errNum != 0 {
+		return "", errNum
 	}
-	if n == 0 { // shouldn't happen
+	if n == 0 { // This shouldn't happen.
 		return "", nil
 	}
 	for i, v := range buf {
@@ -48,35 +48,32 @@ func executable() (string, error) {
 			break
 		}
 	}
-	var strpath string
-	if buf[0] != '/' {
-		var e error
-		if strpath, e = getAbs(buf); e != nil {
-			return strpath, e
+	var err error
+	execPath := string(buf)
+	// execPath will not be empty due to above checks.
+	// Try to get the absolute path if the execPath is not rooted.
+	if execPath[0] != '/' {
+		execPath, err = getAbs(execPath)
+		if err != nil {
+			return execPath, err
 		}
-	} else {
-		strpath = string(buf)
 	}
-	// darwin KERN_PROCARGS may return the path to a symlink rather than the
-	// actual executable
+	// For darwin KERN_PROCARGS may return the path to a symlink rather than the
+	// actual executable.
 	if runtime.GOOS == "darwin" {
-		if strpath, err := filepath.EvalSymlinks(strpath); err != nil {
-			return strpath, err
+		if execPath, err = filepath.EvalSymlinks(execPath); err != nil {
+			return execPath, err
 		}
 	}
-	return strpath, nil
+	return execPath, nil
 }
 
-func getAbs(buf []byte) (string, error) {
-	if getwdError != nil {
-		return string(buf), getwdError
-	} else {
-		if buf[0] == '.' {
-			buf = buf[1:]
-		}
-		if startUpcwd[len(startUpcwd)-1] != '/' && buf[0] != '/' {
-			return startUpcwd + "/" + string(buf), nil
-		}
-		return startUpcwd + string(buf), nil
+func getAbs(execPath string) (string, error) {
+	if initCwdErr != nil {
+		return execPath, initCwdErr
 	}
+	// The execPath may begin with a "../" or a "./" so clean it first.
+	// Join the two paths, trailing and starting slashes undetermined, so use
+	// the generic Join function.
+	return filepath.Join(initCwd, filepath.Clean(execPath)), nil
 }

Godeps/_workspace/src/code.google.com/p/go.crypto/bcrypt/bcrypt_test.go

@@ -53,6 +53,15 @@ func TestBcryptingIsCorrect(t *testing.T) {
 	}
 }
 
+func TestVeryShortPasswords(t *testing.T) {
+	key := []byte("k")
+	salt := []byte("XajjQvNhvvRt5GSeFk1xFe")
+	_, err := bcrypt(key, 10, salt)
+	if err != nil {
+		t.Errorf("One byte key resulted in error: %s", err)
+	}
+}
+
 func TestTooLongPasswordsWork(t *testing.T) {
 	salt := []byte("XajjQvNhvvRt5GSeFk1xFe")
 	// One byte over the usual 56 byte limit that blowfish has

Godeps/_workspace/src/code.google.com/p/go.crypto/blowfish/blowfish_test.go

@@ -192,19 +192,13 @@ func TestCipherDecrypt(t *testing.T) {
 }
 
 func TestSaltedCipherKeyLength(t *testing.T) {
-	var key []byte
-	for i := 0; i < 4; i++ {
-		_, err := NewSaltedCipher(key, []byte{'a'})
-		if err != KeySizeError(i) {
-			t.Errorf("NewSaltedCipher with short key, gave error %#v, expected %#v", err, KeySizeError(i))
-		}
-		key = append(key, 'a')
+	if _, err := NewSaltedCipher(nil, []byte{'a'}); err != KeySizeError(0) {
+		t.Errorf("NewSaltedCipher with short key, gave error %#v, expected %#v", err, KeySizeError(0))
 	}
 
 	// A 57-byte key. One over the typical blowfish restriction.
-	key = []byte("012345678901234567890123456789012345678901234567890123456")
-	_, err := NewSaltedCipher(key, []byte{'a'})
-	if err != nil {
+	key := []byte("012345678901234567890123456789012345678901234567890123456")
+	if _, err := NewSaltedCipher(key, []byte{'a'}); err != nil {
 		t.Errorf("NewSaltedCipher with long key, gave error %#v", err)
 	}
 }

Godeps/_workspace/src/code.google.com/p/go.crypto/blowfish/cipher.go

@@ -26,14 +26,13 @@ func (k KeySizeError) Error() string {
 }
 
 // NewCipher creates and returns a Cipher.
-// The key argument should be the Blowfish key, 4 to 56 bytes.
+// The key argument should be the Blowfish key, from 1 to 56 bytes.
 func NewCipher(key []byte) (*Cipher, error) {
 	var result Cipher
-	k := len(key)
-	if k < 4 || k > 56 {
+	if k := len(key); k < 1 || k > 56 {
 		return nil, KeySizeError(k)
 	}
-	initCipher(key, &result)
+	initCipher(&result)
 	ExpandKey(key, &result)
 	return &result, nil
 }
@@ -44,11 +43,10 @@ func NewCipher(key []byte) (*Cipher, error) {
 // bytes. Only the first 16 bytes of salt are used.
 func NewSaltedCipher(key, salt []byte) (*Cipher, error) {
 	var result Cipher
-	k := len(key)
-	if k < 4 {
+	if k := len(key); k < 1 {
 		return nil, KeySizeError(k)
 	}
-	initCipher(key, &result)
+	initCipher(&result)
 	expandKeyWithSalt(key, salt, &result)
 	return &result, nil
 }
@@ -81,7 +79,7 @@ func (c *Cipher) Decrypt(dst, src []byte) {
 	dst[4], dst[5], dst[6], dst[7] = byte(r>>24), byte(r>>16), byte(r>>8), byte(r)
 }
 
-func initCipher(key []byte, c *Cipher) {
+func initCipher(c *Cipher) {
 	copy(c.p[0:], p[0:])
 	copy(c.s0[0:], s0[0:])
 	copy(c.s1[0:], s1[0:])

Godeps/_workspace/src/code.google.com/p/go.text/transform/transform.go

@@ -9,6 +9,7 @@
 package transform
 
 import (
+	"bytes"
 	"errors"
 	"io"
 	"unicode/utf8"
@@ -127,7 +128,7 @@ func (r *Reader) Read(p []byte) (int, error) {
 				// cannot read more bytes into src.
 				r.transformComplete = r.err != nil
 				continue
-			case err == ErrShortDst && r.dst1 != 0:
+			case err == ErrShortDst && (r.dst1 != 0 || n != 0):
 				// Make room in dst by copying out, and try again.
 				continue
 			case err == ErrShortSrc && r.src1-r.src0 != len(r.src) && r.err == nil:
@@ -210,7 +211,7 @@ func (w *Writer) Write(data []byte) (n int, err error) {
 			n += nSrc
 		}
 		switch {
-		case err == ErrShortDst && nDst > 0:
+		case err == ErrShortDst && (nDst > 0 || nSrc > 0):
 		case err == ErrShortSrc && len(src) < len(w.src):
 			m := copy(w.src, src)
 			// If w.n > 0, bytes from data were already copied to w.src and n
@@ -467,30 +468,125 @@ func (t removeF) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err err
 	return
 }
 
-// Bytes returns a new byte slice with the result of converting b using t.
-// If any unrecoverable error occurs it returns nil.
-func Bytes(t Transformer, b []byte) []byte {
-	out := make([]byte, len(b))
-	n := 0
-	for {
-		nDst, nSrc, err := t.Transform(out[n:], b, true)
-		n += nDst
-		if err == nil {
-			return out[:n]
-		} else if err != ErrShortDst {
-			return nil
-		}
-		b = b[nSrc:]
+// grow returns a new []byte that is longer than b, and copies the first n bytes
+// of b to the start of the new slice.
+func grow(b []byte, n int) []byte {
+	m := len(b)
+	if m <= 256 {
+		m *= 2
+	} else {
+		m += m >> 1
+	}
+	buf := make([]byte, m)
+	copy(buf, b[:n])
+	return buf
+}
 
-		// Grow the destination buffer.
-		sz := len(out)
-		if sz <= 256 {
-			sz *= 2
-		} else {
-			sz += sz >> 1
+const initialBufSize = 128
+
+// String returns a string with the result of converting s[:n] using t, where
+// n <= len(s). If err == nil, n will be len(s).
+func String(t Transformer, s string) (result string, n int, err error) {
+	if s == "" {
+		return "", 0, nil
+	}
+
+	// Allocate only once. Note that both dst and src escape when passed to
+	// Transform.
+	buf := [2 * initialBufSize]byte{}
+	dst := buf[:initialBufSize:initialBufSize]
+	src := buf[initialBufSize : 2*initialBufSize]
+
+	// Avoid allocation if the transformed string is identical to the original.
+	// After this loop, pDst will point to the furthest point in s for which it
+	// could be detected that t gives equal results, src[:nSrc] will
+	// indicated the last processed chunk of s for which the output is not equal
+	// and dst[:nDst] will be the transform of this chunk.
+	var nDst, nSrc int
+	pDst := 0 // Used as index in both src and dst in this loop.
+	for {
+		n := copy(src, s[pDst:])
+		nDst, nSrc, err = t.Transform(dst, src[:n], pDst+n == len(s))
+
+		// Note 1: we will not enter the loop with pDst == len(s) and we will
+		// not end the loop with it either. So if nSrc is 0, this means there is
+		// some kind of error from which we cannot recover given the current
+		// buffer sizes. We will give up in this case.
+		// Note 2: it is not entirely correct to simply do a bytes.Equal as
+		// a Transformer may buffer internally. It will work in most cases,
+		// though, and no harm is done if it doesn't work.
+		// TODO:  let transformers implement an optional Spanner interface, akin
+		// to norm's QuickSpan. This would even allow us to avoid any allocation.
+		if nSrc == 0 || !bytes.Equal(dst[:nDst], src[:nSrc]) {
+			break
+		}
+
+		if pDst += nDst; pDst == len(s) {
+			return s, pDst, nil
+		}
+	}
+
+	// Move the bytes seen so far to dst.
+	pSrc := pDst + nSrc
+	if pDst+nDst <= initialBufSize {
+		copy(dst[pDst:], dst[:nDst])
+	} else {
+		b := make([]byte, len(s)+nDst-nSrc)
+		copy(b[pDst:], dst[:nDst])
+		dst = b
+	}
+	copy(dst, s[:pDst])
+	pDst += nDst
+
+	if err != nil && err != ErrShortDst && err != ErrShortSrc {
+		return string(dst[:pDst]), pSrc, err
+	}
+
+	// Complete the string with the remainder.
+	for {
+		n := copy(src, s[pSrc:])
+		nDst, nSrc, err = t.Transform(dst[pDst:], src[:n], pSrc+n == len(s))
+		pDst += nDst
+		pSrc += nSrc
+
+		switch err {
+		case nil:
+			if pSrc == len(s) {
+				return string(dst[:pDst]), pSrc, nil
+			}
+		case ErrShortDst:
+			// Do not grow as long as we can make progress. This may avoid
+			// excessive allocations.
+			if nDst == 0 {
+				dst = grow(dst, pDst)
+			}
+		case ErrShortSrc:
+			if nSrc == 0 {
+				src = grow(src, 0)
+			}
+		default:
+			return string(dst[:pDst]), pSrc, err
+		}
+	}
+}
+
+// Bytes returns a new byte slice with the result of converting b[:n] using t,
+// where n <= len(b). If err == nil, n will be len(b).
+func Bytes(t Transformer, b []byte) (result []byte, n int, err error) {
+	dst := make([]byte, len(b))
+	pDst, pSrc := 0, 0
+	for {
+		nDst, nSrc, err := t.Transform(dst[pDst:], b[pSrc:], true)
+		pDst += nDst
+		pSrc += nSrc
+		if err != ErrShortDst {
+			return dst[:pDst], pSrc, err
+		}
+
+		// Grow the destination buffer, but do not grow as long as we can make
+		// progress. This may avoid excessive allocations.
+		if nDst == 0 {
+			dst = grow(dst, pDst)
 		}
-		out2 := make([]byte, sz)
-		copy(out2, out[:n])
-		out = out2
 	}
 }

Godeps/_workspace/src/code.google.com/p/go.text/transform/transform_test.go

@@ -12,6 +12,7 @@ import (
 	"strconv"
 	"strings"
 	"testing"
+	"time"
 	"unicode/utf8"
 )
 
@@ -132,6 +133,43 @@ func (e rleEncode) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err e
 	return nDst, nSrc, nil
 }
 
+// trickler consumes all input bytes, but writes a single byte at a time to dst.
+type trickler []byte
+
+func (t *trickler) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
+	*t = append(*t, src...)
+	if len(*t) == 0 {
+		return 0, 0, nil
+	}
+	if len(dst) == 0 {
+		return 0, len(src), ErrShortDst
+	}
+	dst[0] = (*t)[0]
+	*t = (*t)[1:]
+	if len(*t) > 0 {
+		err = ErrShortDst
+	}
+	return 1, len(src), err
+}
+
+// delayedTrickler is like trickler, but delays writing output to dst. This is
+// highly unlikely to be relevant in practice, but it seems like a good idea
+// to have some tolerance as long as progress can be detected.
+type delayedTrickler []byte
+
+func (t *delayedTrickler) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
+	if len(*t) > 0 && len(dst) > 0 {
+		dst[0] = (*t)[0]
+		*t = (*t)[1:]
+		nDst = 1
+	}
+	*t = append(*t, src...)
+	if len(*t) > 0 {
+		err = ErrShortDst
+	}
+	return nDst, len(src), err
+}
+
 type testCase struct {
 	desc     string
 	t        Transformer
@@ -170,6 +208,15 @@ func (c chain) String() string {
 }
 
 var testCases = []testCase{
+	{
+		desc:    "empty",
+		t:       lowerCaseASCII{},
+		src:     "",
+		dstSize: 100,
+		srcSize: 100,
+		wantStr: "",
+	},
+
 	{
 		desc:    "basic",
 		t:       lowerCaseASCII{},
@@ -378,6 +425,24 @@ var testCases = []testCase{
 		ioSize:  10,
 		wantStr: "4a6b2b4c4d1d",
 	},
+
+	{
+		desc:    "trickler",
+		t:       &trickler{},
+		src:     "abcdefghijklm",
+		dstSize: 3,
+		srcSize: 15,
+		wantStr: "abcdefghijklm",
+	},
+
+	{
+		desc:    "delayedTrickler",
+		t:       &delayedTrickler{},
+		src:     "abcdefghijklm",
+		dstSize: 3,
+		srcSize: 15,
+		wantStr: "abcdefghijklm",
+	},
 }
 
 func TestReader(t *testing.T) {
@@ -685,7 +750,7 @@ func doTransform(tc testCase) (res string, iter int, err error) {
 		switch {
 		case err == nil && len(in) != 0:
 		case err == ErrShortSrc && nSrc > 0:
-		case err == ErrShortDst && nDst > 0:
+		case err == ErrShortDst && (nDst > 0 || nSrc > 0):
 		default:
 			return string(out), iter, err
 		}
@@ -875,27 +940,136 @@ func TestRemoveFunc(t *testing.T) {
 	}
 }
 
-func TestBytes(t *testing.T) {
+func testString(t *testing.T, f func(Transformer, string) (string, int, error)) {
 	for _, tt := range append(testCases, chainTests()...) {
 		if tt.desc == "allowStutter = true" {
 			// We don't have control over the buffer size, so we eliminate tests
 			// that depend on a specific buffer size being set.
 			continue
 		}
-		got := Bytes(tt.t, []byte(tt.src))
-		if tt.wantErr != nil {
-			if tt.wantErr != ErrShortDst && tt.wantErr != ErrShortSrc {
-				// Bytes should return nil for non-recoverable errors.
-				if g, w := (got == nil), (tt.wantErr != nil); g != w {
-					t.Errorf("%s:error: got %v; want %v", tt.desc, g, w)
-				}
-			}
-			// The output strings in the tests that expect an error will
-			// almost certainly not be the same as the result of Bytes.
+		reset(tt.t)
+		if tt.wantErr == ErrShortDst || tt.wantErr == ErrShortSrc {
+			// The result string will be different.
 			continue
 		}
-		if string(got) != tt.wantStr {
+		got, n, err := f(tt.t, tt.src)
+		if tt.wantErr != err {
+			t.Errorf("%s:error: got %v; want %v", tt.desc, err, tt.wantErr)
+		}
+		if got, want := err == nil, n == len(tt.src); got != want {
+			t.Errorf("%s:n: got %v; want %v", tt.desc, got, want)
+		}
+		if got != tt.wantStr {
 			t.Errorf("%s:string: got %q; want %q", tt.desc, got, tt.wantStr)
 		}
 	}
 }
+
+func TestBytes(t *testing.T) {
+	testString(t, func(z Transformer, s string) (string, int, error) {
+		b, n, err := Bytes(z, []byte(s))
+		return string(b), n, err
+	})
+}
+
+func TestString(t *testing.T) {
+	testString(t, String)
+
+	// Overrun the internal destination buffer.
+	for i, s := range []string{
+		strings.Repeat("a", initialBufSize-1),
+		strings.Repeat("a", initialBufSize+0),
+		strings.Repeat("a", initialBufSize+1),
+		strings.Repeat("A", initialBufSize-1),
+		strings.Repeat("A", initialBufSize+0),
+		strings.Repeat("A", initialBufSize+1),
+		strings.Repeat("A", 2*initialBufSize-1),
+		strings.Repeat("A", 2*initialBufSize+0),
+		strings.Repeat("A", 2*initialBufSize+1),
+		strings.Repeat("a", initialBufSize-2) + "A",
+		strings.Repeat("a", initialBufSize-1) + "A",
+		strings.Repeat("a", initialBufSize+0) + "A",
+		strings.Repeat("a", initialBufSize+1) + "A",
+	} {
+		got, _, _ := String(lowerCaseASCII{}, s)
+		if want := strings.ToLower(s); got != want {
+			t.Errorf("%d:dst buffer test: got %s (%d); want %s (%d)", i, got, len(got), want, len(want))
+		}
+	}
+
+	// Overrun the internal source buffer.
+	for i, s := range []string{
+		strings.Repeat("a", initialBufSize-1),
+		strings.Repeat("a", initialBufSize+0),
+		strings.Repeat("a", initialBufSize+1),
+		strings.Repeat("a", 2*initialBufSize+1),
+		strings.Repeat("a", 2*initialBufSize+0),
+		strings.Repeat("a", 2*initialBufSize+1),
+	} {
+		got, _, _ := String(rleEncode{}, s)
+		if want := fmt.Sprintf("%da", len(s)); got != want {
+			t.Errorf("%d:src buffer test: got %s (%d); want %s (%d)", i, got, len(got), want, len(want))
+		}
+	}
+
+	// Test allocations for non-changing strings.
+	// Note we still need to allocate a single buffer.
+	for i, s := range []string{
+		"",
+		"123",
+		"123456789",
+		strings.Repeat("a", initialBufSize),
+		strings.Repeat("a", 10*initialBufSize),
+	} {
+		if n := testing.AllocsPerRun(5, func() { String(&lowerCaseASCII{}, s) }); n > 1 {
+			t.Errorf("%d: #allocs was %f; want 1", i, n)
+		}
+	}
+}
+
+// TestBytesAllocation tests that buffer growth stays limited with the trickler
+// transformer, which behaves oddly but within spec. In case buffer growth is
+// not correctly handled, the test will either panic with a failed allocation or
+// thrash. To ensure the tests terminate under the last condition, we time out
+// after some sufficiently long period of time.
+func TestBytesAllocation(t *testing.T) {
+	done := make(chan bool)
+	go func() {
+		in := bytes.Repeat([]byte{'a'}, 1000)
+		tr := trickler(make([]byte, 1))
+		Bytes(&tr, in)
+		done <- true
+	}()
+	select {
+	case <-done:
+	case <-time.After(3 * time.Second):
+		t.Error("time out, likely due to excessive allocation")
+	}
+}
+
+// TestStringAllocation tests that buffer growth stays limited with the trickler
+// transformer, which behaves oddly but within spec. In case buffer growth is
+// not correctly handled, the test will either panic with a failed allocation or
+// thrash. To ensure the tests terminate under the last condition, we time out
+// after some sufficiently long period of time.
+func TestStringAllocation(t *testing.T) {
+	done := make(chan bool)
+	go func() {
+		in := strings.Repeat("a", 1000)
+		tr := trickler(make([]byte, 1))
+		String(&tr, in)
+		done <- true
+	}()
+	select {
+	case <-done:
+	case <-time.After(3 * time.Second):
+		t.Error("time out, likely due to excessive allocation")
+	}
+}
+
+func BenchmarkStringLower(b *testing.B) {
+	in := strings.Repeat("a", 4096)
+	for i := 0; i < b.N; i++ {
+		String(&lowerCaseASCII{}, in)
+	}
+}

Godeps/_workspace/src/code.google.com/p/go.text/unicode/norm/maketables.go

@@ -11,7 +11,6 @@
 package main
 
 import (
-	"bufio"
 	"bytes"
 	"flag"
 	"fmt"
@@ -24,6 +23,8 @@ import (
 	"strconv"
 	"strings"
 	"unicode"
+
+	"code.google.com/p/go.text/internal/ucd"
 )
 
 func main() {
@@ -63,31 +64,7 @@ var localFiles = flag.Bool("local",
 
 var logger = log.New(os.Stderr, "", log.Lshortfile)
 
-// UnicodeData.txt has form:
-//	0037;DIGIT SEVEN;Nd;0;EN;;7;7;7;N;;;;;
-//	007A;LATIN SMALL LETTER Z;Ll;0;L;;;;;N;;;005A;;005A
-// See http://unicode.org/reports/tr44/ for full explanation
-// The fields:
-const (
-	FCodePoint = iota
-	FName
-	FGeneralCategory
-	FCanonicalCombiningClass
-	FBidiClass
-	FDecompMapping
-	FDecimalValue
-	FDigitValue
-	FNumericValue
-	FBidiMirrored
-	FUnicode1Name
-	FISOComment
-	FSimpleUppercaseMapping
-	FSimpleLowercaseMapping
-	FSimpleTitlecaseMapping
-	NumField
-
-	MaxChar = 0x10FFFF // anything above this shouldn't exist
-)
+const MaxChar = 0x10FFFF // anything above this shouldn't exist
 
 // Quick Check properties of runes allow us to quickly
 // determine whether a rune may occur in a normal form.
@@ -232,7 +209,7 @@ func openReader(file string) (input io.ReadCloser) {
 	return
 }
 
-func parseDecomposition(s string, skipfirst bool) (a []rune, e error) {
+func parseDecomposition(s string, skipfirst bool) (a []rune, err error) {
 	decomp := strings.Split(s, " ")
 	if len(decomp) > 0 && skipfirst {
 		decomp = decomp[1:]
@@ -247,56 +224,31 @@ func parseDecomposition(s string, skipfirst bool) (a []rune, e error) {
 	return a, nil
 }
 
-func parseCharacter(line string) {
-	field := strings.Split(line, ";")
-	if len(field) != NumField {
-		logger.Fatalf("%5s: %d fields (expected %d)\n", line, len(field), NumField)
-	}
-	x, err := strconv.ParseUint(field[FCodePoint], 16, 64)
-	point := int(x)
-	if err != nil {
-		logger.Fatalf("%.5s...: %s", line, err)
-	}
-	if point == 0 {
-		return // not interesting and we use 0 as unset
-	}
-	if point > MaxChar {
-		logger.Fatalf("%5s: Rune %X > MaxChar (%X)", line, point, MaxChar)
-		return
-	}
-	state := SNormal
-	switch {
-	case strings.Index(field[FName], ", First>") > 0:
-		state = SFirst
-	case strings.Index(field[FName], ", Last>") > 0:
-		state = SLast
-	}
-	firstChar := lastChar + 1
-	lastChar = rune(point)
-	if state != SLast {
-		firstChar = lastChar
-	}
-	x, err = strconv.ParseUint(field[FCanonicalCombiningClass], 10, 64)
-	if err != nil {
-		logger.Fatalf("%U: bad ccc field: %s", int(x), err)
-	}
-	ccc := uint8(x)
-	decmap := field[FDecompMapping]
-	exp, e := parseDecomposition(decmap, false)
-	isCompat := false
-	if e != nil {
-		if len(decmap) > 0 {
-			exp, e = parseDecomposition(decmap, true)
-			if e != nil {
-				logger.Fatalf(`%U: bad decomp |%v|: "%s"`, int(x), decmap, e)
+func loadUnicodeData() {
+	f := openReader("UnicodeData.txt")
+	defer f.Close()
+	p := ucd.New(f)
+	for p.Next() {
+		r := p.Rune(ucd.CodePoint)
+		char := &chars[r]
+
+		char.ccc = uint8(p.Uint(ucd.CanonicalCombiningClass))
+		decmap := p.String(ucd.DecompMapping)
+
+		exp, err := parseDecomposition(decmap, false)
+		isCompat := false
+		if err != nil {
+			if len(decmap) > 0 {
+				exp, err = parseDecomposition(decmap, true)
+				if err != nil {
+					logger.Fatalf(`%U: bad decomp |%v|: "%s"`, r, decmap, err)
+				}
+				isCompat = true
 			}
-			isCompat = true
 		}
-	}
-	for i := firstChar; i <= lastChar; i++ {
-		char := &chars[i]
-		char.name = field[FName]
-		char.codePoint = i
+
+		char.name = p.String(ucd.Name)
+		char.codePoint = r
 		char.forms[FCompatibility].decomp = exp
 		if !isCompat {
 			char.forms[FCanonical].decomp = exp
@@ -306,24 +258,9 @@ func parseCharacter(line string) {
 		if len(decmap) > 0 {
 			char.forms[FCompatibility].decomp = exp
 		}
-		char.ccc = ccc
-		char.state = SMissing
-		if i == lastChar {
-			char.state = state
-		}
 	}
-	return
-}
-
-func loadUnicodeData() {
-	f := openReader("UnicodeData.txt")
-	defer f.Close()
-	scanner := bufio.NewScanner(f)
-	for scanner.Scan() {
-		parseCharacter(scanner.Text())
-	}
-	if scanner.Err() != nil {
-		logger.Fatal(scanner.Err())
+	if err := p.Err(); err != nil {
+		logger.Fatal(err)
 	}
 }
 
@@ -354,47 +291,22 @@ func compactCCC() {
 	}
 }
 
-var singlePointRe = regexp.MustCompile(`^([0-9A-F]+) *$`)
-
 // CompositionExclusions.txt has form:
 // 0958    # ...
 // See http://unicode.org/reports/tr44/ for full explanation
-func parseExclusion(line string) int {
-	comment := strings.Index(line, "#")
-	if comment >= 0 {
-		line = line[0:comment]
-	}
-	if len(line) == 0 {
-		return 0
-	}
-	matches := singlePointRe.FindStringSubmatch(line)
-	if len(matches) != 2 {
-		logger.Fatalf("%s: %d matches (expected 1)\n", line, len(matches))
-	}
-	point, err := strconv.ParseUint(matches[1], 16, 64)
-	if err != nil {
-		logger.Fatalf("%.5s...: %s", line, err)
-	}
-	return int(point)
-}
-
 func loadCompositionExclusions() {
 	f := openReader("CompositionExclusions.txt")
 	defer f.Close()
-	scanner := bufio.NewScanner(f)
-	for scanner.Scan() {
-		point := parseExclusion(scanner.Text())
-		if point == 0 {
-			continue
-		}
-		c := &chars[point]
+	p := ucd.New(f)
+	for p.Next() {
+		c := &chars[p.Rune(0)]
 		if c.excludeInComp {
 			logger.Fatalf("%U: Duplicate entry in exclusions.", c.codePoint)
 		}
 		c.excludeInComp = true
 	}
-	if scanner.Err() != nil {
-		log.Fatal(scanner.Err())
+	if e := p.Err(); e != nil {
+		logger.Fatal(e)
 	}
 }
 
@@ -988,8 +900,6 @@ func verifyComputed() {
 	}
 }
 
-var qcRe = regexp.MustCompile(`([0-9A-F\.]+) *; (NF.*_QC); ([YNM]) #.*`)
-
 // Use values in DerivedNormalizationProps.txt to compare against the
 // values we computed.
 // DerivedNormalizationProps.txt has form:
@@ -999,27 +909,13 @@ var qcRe = regexp.MustCompile(`([0-9A-F\.]+) *; (NF.*_QC); ([YNM]) #.*`)
 func testDerived() {
 	f := openReader("DerivedNormalizationProps.txt")
 	defer f.Close()
-	scanner := bufio.NewScanner(f)
-	for scanner.Scan() {
-		line := scanner.Text()
-		qc := qcRe.FindStringSubmatch(line)
-		if qc == nil {
-			continue
-		}
-		rng := strings.Split(qc[1], "..")
-		i, err := strconv.ParseUint(rng[0], 16, 64)
-		if err != nil {
-			log.Fatal(err)
-		}
-		j := i
-		if len(rng) > 1 {
-			j, err = strconv.ParseUint(rng[1], 16, 64)
-			if err != nil {
-				log.Fatal(err)
-			}
-		}
+	p := ucd.New(f)
+	for p.Next() {
+		r := p.Rune(0)
+		c := &chars[r]
+
 		var ftype, mode int
-		qt := strings.TrimSpace(qc[2])
+		qt := p.String(1)
 		switch qt {
 		case "NFC_QC":
 			ftype, mode = FCanonical, MComposed
@@ -1030,10 +926,10 @@ func testDerived() {
 		case "NFKD_QC":
 			ftype, mode = FCompatibility, MDecomposed
 		default:
-			log.Fatalf(`Unexpected quick check type "%s"`, qt)
+			continue
 		}
 		var qr QCResult
-		switch qc[3] {
+		switch p.String(2) {
 		case "Y":
 			qr = QCYes
 		case "N":
@@ -1041,27 +937,15 @@ func testDerived() {
 		case "M":
 			qr = QCMaybe
 		default:
-			log.Fatalf(`Unexpected quick check value "%s"`, qc[3])
+			log.Fatalf(`Unexpected quick check value "%s"`, p.String(2))
 		}
-		var lastFailed bool
-		// Verify current
-		for ; i <= j; i++ {
-			c := &chars[int(i)]
-			c.forms[ftype].verified[mode] = true
-			curqr := c.forms[ftype].quickCheck[mode]
-			if curqr != qr {
-				if !lastFailed {
-					logger.Printf("%s: %.4X..%.4X -- %s\n",
-						qt, int(i), int(j), line[0:50])
-				}
-				logger.Printf("%U: FAILED %s (was %v need %v)\n",
-					int(i), qt, curqr, qr)
-				lastFailed = true
-			}
+		if got := c.forms[ftype].quickCheck[mode]; got != qr {
+			logger.Printf("%U: FAILED %s (was %v need %v)\n", r, qt, got, qr)
 		}
+		c.forms[ftype].verified[mode] = true
 	}
-	if scanner.Err() != nil {
-		logger.Fatal(scanner.Err())
+	if err := p.Err(); err != nil {
+		logger.Fatal(err)
 	}
 	// Any unspecified value must be QCYes. Verify this.
 	for i, c := range chars {

Godeps/_workspace/src/code.google.com/p/snappy-go/snappy/decode.go

@@ -0,0 +1,124 @@
+// Copyright 2011 The Snappy-Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package snappy
+
+import (
+	"encoding/binary"
+	"errors"
+)
+
+// ErrCorrupt reports that the input is invalid.
+var ErrCorrupt = errors.New("snappy: corrupt input")
+
+// DecodedLen returns the length of the decoded block.
+func DecodedLen(src []byte) (int, error) {
+	v, _, err := decodedLen(src)
+	return v, err
+}
+
+// decodedLen returns the length of the decoded block and the number of bytes
+// that the length header occupied.
+func decodedLen(src []byte) (blockLen, headerLen int, err error) {
+	v, n := binary.Uvarint(src)
+	if n == 0 {
+		return 0, 0, ErrCorrupt
+	}
+	if uint64(int(v)) != v {
+		return 0, 0, errors.New("snappy: decoded block is too large")
+	}
+	return int(v), n, nil
+}
+
+// Decode returns the decoded form of src. The returned slice may be a sub-
+// slice of dst if dst was large enough to hold the entire decoded block.
+// Otherwise, a newly allocated slice will be returned.
+// It is valid to pass a nil dst.
+func Decode(dst, src []byte) ([]byte, error) {
+	dLen, s, err := decodedLen(src)
+	if err != nil {
+		return nil, err
+	}
+	if len(dst) < dLen {
+		dst = make([]byte, dLen)
+	}
+
+	var d, offset, length int
+	for s < len(src) {
+		switch src[s] & 0x03 {
+		case tagLiteral:
+			x := uint(src[s] >> 2)
+			switch {
+			case x < 60:
+				s += 1
+			case x == 60:
+				s += 2
+				if s > len(src) {
+					return nil, ErrCorrupt
+				}
+				x = uint(src[s-1])
+			case x == 61:
+				s += 3
+				if s > len(src) {
+					return nil, ErrCorrupt
+				}
+				x = uint(src[s-2]) | uint(src[s-1])<<8
+			case x == 62:
+				s += 4
+				if s > len(src) {
+					return nil, ErrCorrupt
+				}
+				x = uint(src[s-3]) | uint(src[s-2])<<8 | uint(src[s-1])<<16
+			case x == 63:
+				s += 5
+				if s > len(src) {
+					return nil, ErrCorrupt
+				}
+				x = uint(src[s-4]) | uint(src[s-3])<<8 | uint(src[s-2])<<16 | uint(src[s-1])<<24
+			}
+			length = int(x + 1)
+			if length <= 0 {
+				return nil, errors.New("snappy: unsupported literal length")
+			}
+			if length > len(dst)-d || length > len(src)-s {
+				return nil, ErrCorrupt
+			}
+			copy(dst[d:], src[s:s+length])
+			d += length
+			s += length
+			continue
+
+		case tagCopy1:
+			s += 2
+			if s > len(src) {
+				return nil, ErrCorrupt
+			}
+			length = 4 + int(src[s-2])>>2&0x7
+			offset = int(src[s-2])&0xe0<<3 | int(src[s-1])
+
+		case tagCopy2:
+			s += 3
+			if s > len(src) {
+				return nil, ErrCorrupt
+			}
+			length = 1 + int(src[s-3])>>2
+			offset = int(src[s-2]) | int(src[s-1])<<8
+
+		case tagCopy4:
+			return nil, errors.New("snappy: unsupported COPY_4 tag")
+		}
+
+		end := d + length
+		if offset > d || end > len(dst) {
+			return nil, ErrCorrupt
+		}
+		for ; d < end; d++ {
+			dst[d] = dst[d-offset]
+		}
+	}
+	if d != dLen {
+		return nil, ErrCorrupt
+	}
+	return dst[:d], nil
+}

Godeps/_workspace/src/code.google.com/p/snappy-go/snappy/encode.go

@@ -0,0 +1,174 @@
+// Copyright 2011 The Snappy-Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package snappy
+
+import (
+	"encoding/binary"
+)
+
+// We limit how far copy back-references can go, the same as the C++ code.
+const maxOffset = 1 << 15
+
+// emitLiteral writes a literal chunk and returns the number of bytes written.
+func emitLiteral(dst, lit []byte) int {
+	i, n := 0, uint(len(lit)-1)
+	switch {
+	case n < 60:
+		dst[0] = uint8(n)<<2 | tagLiteral
+		i = 1
+	case n < 1<<8:
+		dst[0] = 60<<2 | tagLiteral
+		dst[1] = uint8(n)
+		i = 2
+	case n < 1<<16:
+		dst[0] = 61<<2 | tagLiteral
+		dst[1] = uint8(n)
+		dst[2] = uint8(n >> 8)
+		i = 3
+	case n < 1<<24:
+		dst[0] = 62<<2 | tagLiteral
+		dst[1] = uint8(n)
+		dst[2] = uint8(n >> 8)
+		dst[3] = uint8(n >> 16)
+		i = 4
+	case int64(n) < 1<<32:
+		dst[0] = 63<<2 | tagLiteral
+		dst[1] = uint8(n)
+		dst[2] = uint8(n >> 8)
+		dst[3] = uint8(n >> 16)
+		dst[4] = uint8(n >> 24)
+		i = 5
+	default:
+		panic("snappy: source buffer is too long")
+	}
+	if copy(dst[i:], lit) != len(lit) {
+		panic("snappy: destination buffer is too short")
+	}
+	return i + len(lit)
+}
+
+// emitCopy writes a copy chunk and returns the number of bytes written.
+func emitCopy(dst []byte, offset, length int) int {
+	i := 0
+	for length > 0 {
+		x := length - 4
+		if 0 <= x && x < 1<<3 && offset < 1<<11 {
+			dst[i+0] = uint8(offset>>8)&0x07<<5 | uint8(x)<<2 | tagCopy1
+			dst[i+1] = uint8(offset)
+			i += 2
+			break
+		}
+
+		x = length
+		if x > 1<<6 {
+			x = 1 << 6
+		}
+		dst[i+0] = uint8(x-1)<<2 | tagCopy2
+		dst[i+1] = uint8(offset)
+		dst[i+2] = uint8(offset >> 8)
+		i += 3
+		length -= x
+	}
+	return i
+}
+
+// Encode returns the encoded form of src. The returned slice may be a sub-
+// slice of dst if dst was large enough to hold the entire encoded block.
+// Otherwise, a newly allocated slice will be returned.
+// It is valid to pass a nil dst.
+func Encode(dst, src []byte) ([]byte, error) {
+	if n := MaxEncodedLen(len(src)); len(dst) < n {
+		dst = make([]byte, n)
+	}
+
+	// The block starts with the varint-encoded length of the decompressed bytes.
+	d := binary.PutUvarint(dst, uint64(len(src)))
+
+	// Return early if src is short.
+	if len(src) <= 4 {
+		if len(src) != 0 {
+			d += emitLiteral(dst[d:], src)
+		}
+		return dst[:d], nil
+	}
+
+	// Initialize the hash table. Its size ranges from 1<<8 to 1<<14 inclusive.
+	const maxTableSize = 1 << 14
+	shift, tableSize := uint(32-8), 1<<8
+	for tableSize < maxTableSize && tableSize < len(src) {
+		shift--
+		tableSize *= 2
+	}
+	var table [maxTableSize]int
+
+	// Iterate over the source bytes.
+	var (
+		s   int // The iterator position.
+		t   int // The last position with the same hash as s.
+		lit int // The start position of any pending literal bytes.
+	)
+	for s+3 < len(src) {
+		// Update the hash table.
+		b0, b1, b2, b3 := src[s], src[s+1], src[s+2], src[s+3]
+		h := uint32(b0) | uint32(b1)<<8 | uint32(b2)<<16 | uint32(b3)<<24
+		p := &table[(h*0x1e35a7bd)>>shift]
+		// We need to to store values in [-1, inf) in table. To save
+		// some initialization time, (re)use the table's zero value
+		// and shift the values against this zero: add 1 on writes,
+		// subtract 1 on reads.
+		t, *p = *p-1, s+1
+		// If t is invalid or src[s:s+4] differs from src[t:t+4], accumulate a literal byte.
+		if t < 0 || s-t >= maxOffset || b0 != src[t] || b1 != src[t+1] || b2 != src[t+2] || b3 != src[t+3] {
+			s++
+			continue
+		}
+		// Otherwise, we have a match. First, emit any pending literal bytes.
+		if lit != s {
+			d += emitLiteral(dst[d:], src[lit:s])
+		}
+		// Extend the match to be as long as possible.
+		s0 := s
+		s, t = s+4, t+4
+		for s < len(src) && src[s] == src[t] {
+			s++
+			t++
+		}
+		// Emit the copied bytes.
+		d += emitCopy(dst[d:], s-t, s-s0)
+		lit = s
+	}
+
+	// Emit any final pending literal bytes and return.
+	if lit != len(src) {
+		d += emitLiteral(dst[d:], src[lit:])
+	}
+	return dst[:d], nil
+}
+
+// MaxEncodedLen returns the maximum length of a snappy block, given its
+// uncompressed length.
+func MaxEncodedLen(srcLen int) int {
+	// Compressed data can be defined as:
+	//    compressed := item* literal*
+	//    item       := literal* copy
+	//
+	// The trailing literal sequence has a space blowup of at most 62/60
+	// since a literal of length 60 needs one tag byte + one extra byte
+	// for length information.
+	//
+	// Item blowup is trickier to measure. Suppose the "copy" op copies
+	// 4 bytes of data. Because of a special check in the encoding code,
+	// we produce a 4-byte copy only if the offset is < 65536. Therefore
+	// the copy op takes 3 bytes to encode, and this type of item leads
+	// to at most the 62/60 blowup for representing literals.
+	//
+	// Suppose the "copy" op copies 5 bytes of data. If the offset is big
+	// enough, it will take 5 bytes to encode the copy op. Therefore the
+	// worst case here is a one-byte literal followed by a five-byte copy.
+	// That is, 6 bytes of input turn into 7 bytes of "compressed" data.
+	//
+	// This last factor dominates the blowup, so the final estimate is:
+	return 32 + srcLen + srcLen/6
+}

Godeps/_workspace/src/code.google.com/p/snappy-go/snappy/snappy.go

@@ -0,0 +1,38 @@
+// Copyright 2011 The Snappy-Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package snappy implements the snappy block-based compression format.
+// It aims for very high speeds and reasonable compression.
+//
+// The C++ snappy implementation is at http://code.google.com/p/snappy/
+package snappy
+
+/*
+Each encoded block begins with the varint-encoded length of the decoded data,
+followed by a sequence of chunks. Chunks begin and end on byte boundaries. The
+first byte of each chunk is broken into its 2 least and 6 most significant bits
+called l and m: l ranges in [0, 4) and m ranges in [0, 64). l is the chunk tag.
+Zero means a literal tag. All other values mean a copy tag.
+
+For literal tags:
+  - If m < 60, the next 1 + m bytes are literal bytes.
+  - Otherwise, let n be the little-endian unsigned integer denoted by the next
+    m - 59 bytes. The next 1 + n bytes after that are literal bytes.
+
+For copy tags, length bytes are copied from offset bytes ago, in the style of
+Lempel-Ziv compression algorithms. In particular:
+  - For l == 1, the offset ranges in [0, 1<<11) and the length in [4, 12).
+    The length is 4 + the low 3 bits of m. The high 3 bits of m form bits 8-10
+    of the offset. The next byte is bits 0-7 of the offset.
+  - For l == 2, the offset ranges in [0, 1<<16) and the length in [1, 65).
+    The length is 1 + m. The offset is the little-endian unsigned integer
+    denoted by the next 2 bytes.
+  - For l == 3, this tag is a legacy format that is no longer supported.
+*/
+const (
+	tagLiteral = 0x00
+	tagCopy1   = 0x01
+	tagCopy2   = 0x02
+	tagCopy4   = 0x03
+)

Godeps/_workspace/src/code.google.com/p/snappy-go/snappy/snappy_test.go

@@ -0,0 +1,261 @@
+// Copyright 2011 The Snappy-Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package snappy
+
+import (
+	"bytes"
+	"flag"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"math/rand"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+var download = flag.Bool("download", false, "If true, download any missing files before running benchmarks")
+
+func roundtrip(b, ebuf, dbuf []byte) error {
+	e, err := Encode(ebuf, b)
+	if err != nil {
+		return fmt.Errorf("encoding error: %v", err)
+	}
+	d, err := Decode(dbuf, e)
+	if err != nil {
+		return fmt.Errorf("decoding error: %v", err)
+	}
+	if !bytes.Equal(b, d) {
+		return fmt.Errorf("roundtrip mismatch:\n\twant %v\n\tgot  %v", b, d)
+	}
+	return nil
+}
+
+func TestEmpty(t *testing.T) {
+	if err := roundtrip(nil, nil, nil); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestSmallCopy(t *testing.T) {
+	for _, ebuf := range [][]byte{nil, make([]byte, 20), make([]byte, 64)} {
+		for _, dbuf := range [][]byte{nil, make([]byte, 20), make([]byte, 64)} {
+			for i := 0; i < 32; i++ {
+				s := "aaaa" + strings.Repeat("b", i) + "aaaabbbb"
+				if err := roundtrip([]byte(s), ebuf, dbuf); err != nil {
+					t.Errorf("len(ebuf)=%d, len(dbuf)=%d, i=%d: %v", len(ebuf), len(dbuf), i, err)
+				}
+			}
+		}
+	}
+}
+
+func TestSmallRand(t *testing.T) {
+	rand.Seed(27354294)
+	for n := 1; n < 20000; n += 23 {
+		b := make([]byte, n)
+		for i, _ := range b {
+			b[i] = uint8(rand.Uint32())
+		}
+		if err := roundtrip(b, nil, nil); err != nil {
+			t.Fatal(err)
+		}
+	}
+}
+
+func TestSmallRegular(t *testing.T) {
+	for n := 1; n < 20000; n += 23 {
+		b := make([]byte, n)
+		for i, _ := range b {
+			b[i] = uint8(i%10 + 'a')
+		}
+		if err := roundtrip(b, nil, nil); err != nil {
+			t.Fatal(err)
+		}
+	}
+}
+
+func benchDecode(b *testing.B, src []byte) {
+	encoded, err := Encode(nil, src)
+	if err != nil {
+		b.Fatal(err)
+	}
+	// Bandwidth is in amount of uncompressed data.
+	b.SetBytes(int64(len(src)))
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		Decode(src, encoded)
+	}
+}
+
+func benchEncode(b *testing.B, src []byte) {
+	// Bandwidth is in amount of uncompressed data.
+	b.SetBytes(int64(len(src)))
+	dst := make([]byte, MaxEncodedLen(len(src)))
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		Encode(dst, src)
+	}
+}
+
+func readFile(b *testing.B, filename string) []byte {
+	src, err := ioutil.ReadFile(filename)
+	if err != nil {
+		b.Fatalf("failed reading %s: %s", filename, err)
+	}
+	if len(src) == 0 {
+		b.Fatalf("%s has zero length", filename)
+	}
+	return src
+}
+
+// expand returns a slice of length n containing repeated copies of src.
+func expand(src []byte, n int) []byte {
+	dst := make([]byte, n)
+	for x := dst; len(x) > 0; {
+		i := copy(x, src)
+		x = x[i:]
+	}
+	return dst
+}
+
+func benchWords(b *testing.B, n int, decode bool) {
+	// Note: the file is OS-language dependent so the resulting values are not
+	// directly comparable for non-US-English OS installations.
+	data := expand(readFile(b, "/usr/share/dict/words"), n)
+	if decode {
+		benchDecode(b, data)
+	} else {
+		benchEncode(b, data)
+	}
+}
+
+func BenchmarkWordsDecode1e3(b *testing.B) { benchWords(b, 1e3, true) }
+func BenchmarkWordsDecode1e4(b *testing.B) { benchWords(b, 1e4, true) }
+func BenchmarkWordsDecode1e5(b *testing.B) { benchWords(b, 1e5, true) }
+func BenchmarkWordsDecode1e6(b *testing.B) { benchWords(b, 1e6, true) }
+func BenchmarkWordsEncode1e3(b *testing.B) { benchWords(b, 1e3, false) }
+func BenchmarkWordsEncode1e4(b *testing.B) { benchWords(b, 1e4, false) }
+func BenchmarkWordsEncode1e5(b *testing.B) { benchWords(b, 1e5, false) }
+func BenchmarkWordsEncode1e6(b *testing.B) { benchWords(b, 1e6, false) }
+
+// testFiles' values are copied directly from
+// https://code.google.com/p/snappy/source/browse/trunk/snappy_unittest.cc.
+// The label field is unused in snappy-go.
+var testFiles = []struct {
+	label    string
+	filename string
+}{
+	{"html", "html"},
+	{"urls", "urls.10K"},
+	{"jpg", "house.jpg"},
+	{"pdf", "mapreduce-osdi-1.pdf"},
+	{"html4", "html_x_4"},
+	{"cp", "cp.html"},
+	{"c", "fields.c"},
+	{"lsp", "grammar.lsp"},
+	{"xls", "kennedy.xls"},
+	{"txt1", "alice29.txt"},
+	{"txt2", "asyoulik.txt"},
+	{"txt3", "lcet10.txt"},
+	{"txt4", "plrabn12.txt"},
+	{"bin", "ptt5"},
+	{"sum", "sum"},
+	{"man", "xargs.1"},
+	{"pb", "geo.protodata"},
+	{"gaviota", "kppkn.gtb"},
+}
+
+// The test data files are present at this canonical URL.
+const baseURL = "https://snappy.googlecode.com/svn/trunk/testdata/"
+
+func downloadTestdata(basename string) (errRet error) {
+	filename := filepath.Join("testdata", basename)
+	f, err := os.Create(filename)
+	if err != nil {
+		return fmt.Errorf("failed to create %s: %s", filename, err)
+	}
+	defer f.Close()
+	defer func() {
+		if errRet != nil {
+			os.Remove(filename)
+		}
+	}()
+	resp, err := http.Get(baseURL + basename)
+	if err != nil {
+		return fmt.Errorf("failed to download %s: %s", baseURL+basename, err)
+	}
+	defer resp.Body.Close()
+	_, err = io.Copy(f, resp.Body)
+	if err != nil {
+		return fmt.Errorf("failed to write %s: %s", filename, err)
+	}
+	return nil
+}
+
+func benchFile(b *testing.B, n int, decode bool) {
+	filename := filepath.Join("testdata", testFiles[n].filename)
+	if stat, err := os.Stat(filename); err != nil || stat.Size() == 0 {
+		if !*download {
+			b.Fatal("test data not found; skipping benchmark without the -download flag")
+		}
+		// Download the official snappy C++ implementation reference test data
+		// files for benchmarking.
+		if err := os.Mkdir("testdata", 0777); err != nil && !os.IsExist(err) {
+			b.Fatalf("failed to create testdata: %s", err)
+		}
+		for _, tf := range testFiles {
+			if err := downloadTestdata(tf.filename); err != nil {
+				b.Fatalf("failed to download testdata: %s", err)
+			}
+		}
+	}
+	data := readFile(b, filename)
+	if decode {
+		benchDecode(b, data)
+	} else {
+		benchEncode(b, data)
+	}
+}
+
+// Naming convention is kept similar to what snappy's C++ implementation uses.
+func Benchmark_UFlat0(b *testing.B)  { benchFile(b, 0, true) }
+func Benchmark_UFlat1(b *testing.B)  { benchFile(b, 1, true) }
+func Benchmark_UFlat2(b *testing.B)  { benchFile(b, 2, true) }
+func Benchmark_UFlat3(b *testing.B)  { benchFile(b, 3, true) }
+func Benchmark_UFlat4(b *testing.B)  { benchFile(b, 4, true) }
+func Benchmark_UFlat5(b *testing.B)  { benchFile(b, 5, true) }
+func Benchmark_UFlat6(b *testing.B)  { benchFile(b, 6, true) }
+func Benchmark_UFlat7(b *testing.B)  { benchFile(b, 7, true) }
+func Benchmark_UFlat8(b *testing.B)  { benchFile(b, 8, true) }
+func Benchmark_UFlat9(b *testing.B)  { benchFile(b, 9, true) }
+func Benchmark_UFlat10(b *testing.B) { benchFile(b, 10, true) }
+func Benchmark_UFlat11(b *testing.B) { benchFile(b, 11, true) }
+func Benchmark_UFlat12(b *testing.B) { benchFile(b, 12, true) }
+func Benchmark_UFlat13(b *testing.B) { benchFile(b, 13, true) }
+func Benchmark_UFlat14(b *testing.B) { benchFile(b, 14, true) }
+func Benchmark_UFlat15(b *testing.B) { benchFile(b, 15, true) }
+func Benchmark_UFlat16(b *testing.B) { benchFile(b, 16, true) }
+func Benchmark_UFlat17(b *testing.B) { benchFile(b, 17, true) }
+func Benchmark_ZFlat0(b *testing.B)  { benchFile(b, 0, false) }
+func Benchmark_ZFlat1(b *testing.B)  { benchFile(b, 1, false) }
+func Benchmark_ZFlat2(b *testing.B)  { benchFile(b, 2, false) }
+func Benchmark_ZFlat3(b *testing.B)  { benchFile(b, 3, false) }
+func Benchmark_ZFlat4(b *testing.B)  { benchFile(b, 4, false) }
+func Benchmark_ZFlat5(b *testing.B)  { benchFile(b, 5, false) }
+func Benchmark_ZFlat6(b *testing.B)  { benchFile(b, 6, false) }
+func Benchmark_ZFlat7(b *testing.B)  { benchFile(b, 7, false) }
+func Benchmark_ZFlat8(b *testing.B)  { benchFile(b, 8, false) }
+func Benchmark_ZFlat9(b *testing.B)  { benchFile(b, 9, false) }
+func Benchmark_ZFlat10(b *testing.B) { benchFile(b, 10, false) }
+func Benchmark_ZFlat11(b *testing.B) { benchFile(b, 11, false) }
+func Benchmark_ZFlat12(b *testing.B) { benchFile(b, 12, false) }
+func Benchmark_ZFlat13(b *testing.B) { benchFile(b, 13, false) }
+func Benchmark_ZFlat14(b *testing.B) { benchFile(b, 14, false) }
+func Benchmark_ZFlat15(b *testing.B) { benchFile(b, 15, false) }
+func Benchmark_ZFlat16(b *testing.B) { benchFile(b, 16, false) }
+func Benchmark_ZFlat17(b *testing.B) { benchFile(b, 17, false) }

Godeps/_workspace/src/github.com/bkaradzic/go-lz4/.gitignore

@@ -0,0 +1 @@
+/lz4-example/lz4-example

Godeps/_workspace/src/github.com/bkaradzic/go-lz4/.travis.yml

@@ -0,0 +1,7 @@
+language: go
+
+go:
+  - 1.1
+  - 1.2
+  - 1.3
+  - tip

Godeps/_workspace/src/github.com/bkaradzic/go-lz4/LICENSE

@@ -0,0 +1,24 @@
+Copyright 2011-2012 Branimir Karadzic. All rights reserved.
+Copyright 2013 Damian Gryski. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+   1. Redistributions of source code must retain the above copyright notice, this
+      list of conditions and the following disclaimer.
+
+   2. Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimer in the documentation
+      and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY COPYRIGHT HOLDER ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+SHALL COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+THE POSSIBILITY OF SUCH DAMAGE.
+

Godeps/_workspace/src/github.com/bkaradzic/go-lz4/README.md

@@ -0,0 +1,71 @@
+go-lz4
+======
+
+go-lz4 is port of LZ4 lossless compression algorithm to Go. The original C code
+is located at:
+
+https://code.google.com/p/lz4/
+
+Status
+------
+[![Build Status](https://secure.travis-ci.org/bkaradzic/go-lz4.png)](http://travis-ci.org/bkaradzic/go-lz4)  
+[![GoDoc](https://godoc.org/github.com/bkaradzic/go-lz4?status.png)](https://godoc.org/github.com/bkaradzic/go-lz4)
+
+Usage
+-----
+
+    go get github.com/bkaradzic/go-lz4
+
+    import "github.com/bkaradzic/go-lz4"
+
+The package name is `lz4`
+
+Notes
+-----
+
+* go-lz4 saves a uint32 with the original uncompressed length at the beginning
+  of the encoded buffer.  They may get in the way of interoperability with
+  other implementations.
+
+Contributors
+------------
+
+Damian Gryski ([@dgryski](https://github.com/dgryski))  
+Dustin Sallings ([@dustin](https://github.com/dustin))
+
+Contact
+-------
+
+[@bkaradzic](https://twitter.com/bkaradzic)  
+http://www.stuckingeometry.com
+
+Project page  
+https://github.com/bkaradzic/go-lz4
+
+License
+-------
+
+Copyright 2011-2012 Branimir Karadzic. All rights reserved.  
+Copyright 2013 Damian Gryski. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+   1. Redistributions of source code must retain the above copyright notice, this
+      list of conditions and the following disclaimer.
+
+   2. Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimer in the documentation
+      and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY COPYRIGHT HOLDER ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+SHALL COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+THE POSSIBILITY OF SUCH DAMAGE.
+

Godeps/_workspace/src/github.com/bkaradzic/go-lz4/fuzzer/main.go

@@ -0,0 +1,74 @@
+package main
+
+import (
+	"math/rand"
+
+	"github.com/bkaradzic/go-lz4"
+
+	// lz4's API matches snappy's, so we can easily see how it performs
+	// lz4 "code.google.com/p/snappy-go/snappy"
+)
+
+var input = `
+ADVENTURE I. A SCANDAL IN BOHEMIA
+
+I.
+
+To Sherlock Holmes she is always THE woman. I have seldom heard
+him mention her under any other name. In his eyes she eclipses
+and predominates the whole of her sex. It was not that he felt
+any emotion akin to love for Irene Adler. All emotions, and that
+one particularly, were abhorrent to his cold, precise but
+admirably balanced mind. He was, I take it, the most perfect
+reasoning and observing machine that the world has seen, but as a
+lover he would have placed himself in a false position. He never
+spoke of the softer passions, save with a gibe and a sneer. They
+were admirable things for the observer--excellent for drawing the
+veil from men's motives and actions. But for the trained reasoner
+to admit such intrusions into his own delicate and finely
+adjusted temperament was to introduce a distracting factor which
+might throw a doubt upon all his mental results. Grit in a
+sensitive instrument, or a crack in one of his own high-power
+lenses, would not be more disturbing than a strong emotion in a
+nature such as his. And yet there was but one woman to him, and
+that woman was the late Irene Adler, of dubious and questionable
+memory.
+
+I had seen little of Holmes lately. My marriage had drifted us
+away from each other. My own complete happiness, and the
+home-centred interests which rise up around the man who first
+finds himself master of his own establishment, were sufficient to
+absorb all my attention, while Holmes, who loathed every form of
+society with his whole Bohemian soul, remained in our lodgings in
+Baker Street, buried among his old books, and alternating from
+week to week between cocaine and ambition, the drowsiness of the
+drug, and the fierce energy of his own keen nature. He was still,
+as ever, deeply attracted by the study of crime, and occupied his
+immense faculties and extraordinary powers of observation in
+following out those clues, and clearing up those mysteries which
+had been abandoned as hopeless by the official police. From time
+to time I heard some vague account of his doings: of his summons
+to Odessa in the case of the Trepoff murder, of his clearing up
+of the singular tragedy of the Atkinson brothers at Trincomalee,
+and finally of the mission which he had accomplished so
+delicately and successfully for the reigning family of Holland.
+Beyond these signs of his activity, however, which I merely
+shared with all the readers of the daily press, I knew little of
+my former friend and companion.
+`
+
+func main() {
+
+	compressed, _ := lz4.Encode(nil, []byte(input))
+
+	modified := make([]byte, len(compressed))
+
+	for {
+		copy(modified, compressed)
+		for i := 0; i < 100; i++ {
+			modified[rand.Intn(len(compressed)-4)+4] = byte(rand.Intn(256))
+		}
+		lz4.Decode(nil, modified)
+	}
+
+}

Godeps/_workspace/src/github.com/bkaradzic/go-lz4/lz4-example/main.go

@@ -0,0 +1,86 @@
+/*
+ * Copyright 2011 Branimir Karadzic. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this
+ *       list of conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice,
+ *       this list of conditions and the following disclaimer in the documentation
+ *       and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY COPYRIGHT HOLDER ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"runtime/pprof"
+
+	lz4 "github.com/bkaradzic/go-lz4"
+)
+
+var (
+	decompress = flag.Bool("d", false, "decompress")
+)
+
+func main() {
+
+	var optCPUProfile = flag.String("cpuprofile", "", "profile")
+	flag.Parse()
+
+	if *optCPUProfile != "" {
+		f, err := os.Create(*optCPUProfile)
+		if err != nil {
+			log.Fatal(err)
+		}
+		pprof.StartCPUProfile(f)
+		defer pprof.StopCPUProfile()
+	}
+
+	args := flag.Args()
+
+	var data []byte
+
+	if len(args) < 2 {
+		fmt.Print("Usage: lz4 [-d] <input> <output>\n")
+		os.Exit(1)
+	}
+
+	input, err := os.OpenFile(args[0], os.O_RDONLY, 0644)
+	if err != nil {
+		fmt.Printf("Failed to open input file %s\n", args[0])
+		os.Exit(1)
+	}
+	defer input.Close()
+
+	if *decompress {
+		data, _ = ioutil.ReadAll(input)
+		data, _ = lz4.Decode(nil, data)
+	} else {
+		data, _ = ioutil.ReadAll(input)
+		data, _ = lz4.Encode(nil, data)
+	}
+
+	err = ioutil.WriteFile(args[1], data, 0644)
+	if err != nil {
+		fmt.Printf("Failed to open output file %s\n", args[1])
+		os.Exit(1)
+	}
+}

Godeps/_workspace/src/github.com/bkaradzic/go-lz4/lz4_test.go

@@ -0,0 +1,63 @@
+package lz4
+
+import (
+	"bytes"
+	"io/ioutil"
+	"testing"
+)
+
+var testfile, _ = ioutil.ReadFile("testdata/pg1661.txt")
+
+func roundtrip(t *testing.T, input []byte) {
+
+	dst, err := Encode(nil, input)
+	if err != nil {
+		t.Errorf("got error during compression: %s", err)
+	}
+
+	output, err := Decode(nil, dst)
+
+	if err != nil {
+		t.Errorf("got error during decompress: %s", err)
+	}
+
+	if !bytes.Equal(output, input) {
+		t.Errorf("roundtrip failed")
+	}
+}
+
+func TestEmpty(t *testing.T) {
+	roundtrip(t, nil)
+}
+
+func TestLengths(t *testing.T) {
+
+	for i := 0; i < 1024; i++ {
+		roundtrip(t, testfile[:i])
+	}
+
+	for i := 1024; i < 4096; i += 23 {
+		roundtrip(t, testfile[:i])
+	}
+}
+
+func TestWords(t *testing.T) {
+	roundtrip(t, testfile)
+}
+
+func BenchmarkLZ4Encode(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		Encode(nil, testfile)
+	}
+}
+
+func BenchmarkLZ4Decode(b *testing.B) {
+
+	var compressed, _ = Encode(nil, testfile)
+
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		Decode(nil, compressed)
+	}
+}

Godeps/_workspace/src/github.com/bkaradzic/go-lz4/reader.go

@@ -0,0 +1,194 @@
+/*
+ * Copyright 2011-2012 Branimir Karadzic. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this
+ *       list of conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice,
+ *       this list of conditions and the following disclaimer in the documentation
+ *       and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY COPYRIGHT HOLDER ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package lz4
+
+import (
+	"encoding/binary"
+	"errors"
+	"io"
+)
+
+var (
+	// ErrCorrupt indicates the input was corrupt
+	ErrCorrupt = errors.New("corrupt input")
+)
+
+const (
+	mlBits  = 4
+	mlMask  = (1 << mlBits) - 1
+	runBits = 8 - mlBits
+	runMask = (1 << runBits) - 1
+)
+
+type decoder struct {
+	src  []byte
+	dst  []byte
+	spos uint32
+	dpos uint32
+	ref  uint32
+}
+
+func (d *decoder) readByte() (uint8, error) {
+	if int(d.spos) == len(d.src) {
+		return 0, io.EOF
+	}
+	b := d.src[d.spos]
+	d.spos++
+	return b, nil
+}
+
+func (d *decoder) getLen() (uint32, error) {
+
+	length := uint32(0)
+	ln, err := d.readByte()
+	if err != nil {
+		return 0, ErrCorrupt
+	}
+	for ln == 255 {
+		length += 255
+		ln, err = d.readByte()
+		if err != nil {
+			return 0, ErrCorrupt
+		}
+	}
+	length += uint32(ln)
+
+	return length, nil
+}
+
+func (d *decoder) cp(length, decr uint32) {
+
+	if int(d.ref+length) < int(d.dpos) {
+		copy(d.dst[d.dpos:], d.dst[d.ref:d.ref+length])
+	} else {
+		for ii := uint32(0); ii < length; ii++ {
+			d.dst[d.dpos+ii] = d.dst[d.ref+ii]
+		}
+	}
+	d.dpos += length
+	d.ref += length - decr
+}
+
+func (d *decoder) finish(err error) error {
+	if err == io.EOF {
+		return nil
+	}
+
+	return err
+}
+
+// Decode returns the decoded form of src.  The returned slice may be a
+// subslice of dst if it was large enough to hold the entire decoded block.
+func Decode(dst, src []byte) ([]byte, error) {
+
+	if len(src) < 4 {
+		return nil, ErrCorrupt
+	}
+
+	uncompressedLen := binary.LittleEndian.Uint32(src)
+
+	if uncompressedLen == 0 {
+		return nil, nil
+	}
+
+	if uncompressedLen > MaxInputSize {
+		return nil, ErrTooLarge
+	}
+
+	if dst == nil || len(dst) < int(uncompressedLen) {
+		dst = make([]byte, uncompressedLen)
+	}
+
+	d := decoder{src: src, dst: dst[:uncompressedLen], spos: 4}
+
+	decr := []uint32{0, 3, 2, 3}
+
+	for {
+		code, err := d.readByte()
+		if err != nil {
+			return d.dst, d.finish(err)
+		}
+
+		length := uint32(code >> mlBits)
+		if length == runMask {
+			ln, err := d.getLen()
+			if err != nil {
+				return nil, ErrCorrupt
+			}
+			length += ln
+		}
+
+		if int(d.spos+length) > len(d.src) {
+			return nil, ErrCorrupt
+		}
+
+		for ii := uint32(0); ii < length; ii++ {
+			d.dst[d.dpos+ii] = d.src[d.spos+ii]
+		}
+
+		d.spos += length
+		d.dpos += length
+
+		if int(d.spos) == len(d.src) {
+			return d.dst, nil
+		}
+
+		if int(d.spos+2) >= len(d.src) {
+			return nil, ErrCorrupt
+		}
+
+		back := uint32(d.src[d.spos]) | uint32(d.src[d.spos+1])<<8
+
+		if back > d.dpos {
+			return nil, ErrCorrupt
+		}
+
+		d.spos += 2
+		d.ref = d.dpos - back
+
+		length = uint32(code & mlMask)
+		if length == mlMask {
+			ln, err := d.getLen()
+			if err != nil {
+				return nil, ErrCorrupt
+			}
+			length += ln
+		}
+
+		literal := d.dpos - d.ref
+		if literal < 4 {
+			d.cp(4, decr[literal])
+		} else {
+			length += 4
+		}
+
+		if d.dpos+length > uncompressedLen {
+			return nil, ErrCorrupt
+		}
+
+		d.cp(length, 0)
+	}
+}

Godeps/_workspace/src/github.com/bkaradzic/go-lz4/writer.go

@@ -0,0 +1,188 @@
+/*
+ * Copyright 2011-2012 Branimir Karadzic. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this
+ *       list of conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice,
+ *       this list of conditions and the following disclaimer in the documentation
+ *       and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY COPYRIGHT HOLDER ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package lz4
+
+import "encoding/binary"
+import "errors"
+
+const (
+	minMatch              = 4
+	hashLog               = 17
+	hashTableSize         = 1 << hashLog
+	hashShift             = (minMatch * 8) - hashLog
+	incompressible uint32 = 128
+	uninitHash            = 0x88888888
+
+	// MaxInputSize is the largest buffer than can be compressed in a single block
+	MaxInputSize = 0x7E000000
+)
+
+var (
+	// ErrTooLarge indicates the input buffer was too large
+	ErrTooLarge = errors.New("input too large")
+)
+
+type encoder struct {
+	src       []byte
+	dst       []byte
+	hashTable []uint32
+	pos       uint32
+	anchor    uint32
+	dpos      uint32
+}
+
+// CompressBound returns the maximum length of a lz4 block, given it's uncompressed length
+func CompressBound(isize int) int {
+	if isize > MaxInputSize {
+		return 0
+	}
+	return isize + ((isize) / 255) + 16 + 4
+}
+
+func (e *encoder) writeLiterals(length, mlLen, pos uint32) {
+
+	ln := length
+
+	var code byte
+	if ln > runMask-1 {
+		code = runMask
+	} else {
+		code = byte(ln)
+	}
+
+	if mlLen > mlMask-1 {
+		e.dst[e.dpos] = (code << mlBits) + byte(mlMask)
+	} else {
+		e.dst[e.dpos] = (code << mlBits) + byte(mlLen)
+	}
+	e.dpos++
+
+	if code == runMask {
+		ln -= runMask
+		for ; ln > 254; ln -= 255 {
+			e.dst[e.dpos] = 255
+			e.dpos++
+		}
+
+		e.dst[e.dpos] = byte(ln)
+		e.dpos++
+	}
+
+	for ii := uint32(0); ii < length; ii++ {
+		e.dst[e.dpos+ii] = e.src[pos+ii]
+	}
+
+	e.dpos += length
+}
+
+// Encode returns the encoded form of src.  The returned array may be a
+// sub-slice of dst if it was large enough to hold the entire output.
+func Encode(dst, src []byte) ([]byte, error) {
+
+	if len(src) >= MaxInputSize {
+		return nil, ErrTooLarge
+	}
+
+	if n := CompressBound(len(src)); len(dst) < n {
+		dst = make([]byte, n)
+	}
+
+	e := encoder{src: src, dst: dst, hashTable: make([]uint32, hashTableSize)}
+
+	binary.LittleEndian.PutUint32(dst, uint32(len(src)))
+	e.dpos = 4
+
+	var (
+		step  uint32 = 1
+		limit        = incompressible
+	)
+
+	for {
+		if int(e.pos)+4 >= len(e.src) {
+			e.writeLiterals(uint32(len(e.src))-e.anchor, 0, e.anchor)
+			return e.dst[:e.dpos], nil
+		}
+
+		sequence := uint32(e.src[e.pos+3])<<24 | uint32(e.src[e.pos+2])<<16 | uint32(e.src[e.pos+1])<<8 | uint32(e.src[e.pos+0])
+
+		hash := (sequence * 2654435761) >> hashShift
+		ref := e.hashTable[hash] + uninitHash
+		e.hashTable[hash] = e.pos - uninitHash
+
+		if ((e.pos-ref)>>16) != 0 || uint32(e.src[ref+3])<<24|uint32(e.src[ref+2])<<16|uint32(e.src[ref+1])<<8|uint32(e.src[ref+0]) != sequence {
+			if e.pos-e.anchor > limit {
+				limit <<= 1
+				step += 1 + (step >> 2)
+			}
+			e.pos += step
+			continue
+		}
+
+		if step > 1 {
+			e.hashTable[hash] = ref - uninitHash
+			e.pos -= step - 1
+			step = 1
+			continue
+		}
+		limit = incompressible
+
+		ln := e.pos - e.anchor
+		back := e.pos - ref
+
+		anchor := e.anchor
+
+		e.pos += minMatch
+		ref += minMatch
+		e.anchor = e.pos
+
+		for int(e.pos) < len(e.src) && e.src[e.pos] == e.src[ref] {
+			e.pos++
+			ref++
+		}
+
+		mlLen := e.pos - e.anchor
+
+		e.writeLiterals(ln, mlLen, anchor)
+		e.dst[e.dpos] = uint8(back)
+		e.dst[e.dpos+1] = uint8(back >> 8)
+		e.dpos += 2
+
+		if mlLen > mlMask-1 {
+			mlLen -= mlMask
+			for mlLen > 254 {
+				mlLen -= 255
+
+				e.dst[e.dpos] = 255
+				e.dpos++
+			}
+
+			e.dst[e.dpos] = byte(mlLen)
+			e.dpos++
+		}
+
+		e.anchor = e.pos
+	}
+}

Godeps/_workspace/src/github.com/calmh/xdr/.gitignore

@@ -0,0 +1 @@
+coverage.out

Godeps/_workspace/src/github.com/calmh/xdr/.travis.yml

@@ -0,0 +1,19 @@
+language: go
+go:
+- tip
+
+install:
+- export PATH=$PATH:$HOME/gopath/bin
+- go get code.google.com/p/go.tools/cmd/cover
+- go get github.com/mattn/goveralls
+
+script:
+- ./generate.sh
+- go test -coverprofile=coverage.out
+
+after_success:
+- goveralls -coverprofile=coverage.out -service=travis-ci -package=calmh/xdr -repotoken="$COVERALLS_TOKEN"
+
+env:
+  global:
+    secure: SmgnrGfp2zLrA44ChRMpjPeujubt9veZ8Fx/OseMWECmacyV5N/TuDhzIbwo6QwV4xB0sBacoPzvxQbJRVjNKsPiSu72UbcQmQ7flN4Tf7nW09tSh1iW8NgrpBCq/3UYLoBu2iPBEBKm93IK0aGNAKs6oEkB0fU27iTVBwiTXOY=

Godeps/_workspace/src/github.com/calmh/xdr/LICENSE

@@ -1,21 +1,19 @@
-The MIT License (MIT)
-
-Copyright (c) 2011-2014 Twitter, Inc
+Copyright (C) 2014 Jakob Borg.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
+of this software and associated documentation files (the "Software"), to
+deal in the Software without restriction, including without limitation the
+rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+sell copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
+- The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+IN THE SOFTWARE.

Godeps/_workspace/src/github.com/calmh/xdr/README.md

@@ -0,0 +1,12 @@
+xdr
+===
+
+[![Build Status](https://img.shields.io/travis/calmh/xdr.svg?style=flat)](https://travis-ci.org/calmh/xdr)
+[![Coverage Status](https://img.shields.io/coveralls/calmh/xdr.svg?style=flat)](https://coveralls.io/r/calmh/xdr?branch=master)
+[![API Documentation](http://img.shields.io/badge/api-Godoc-blue.svg?style=flat)](http://godoc.org/github.com/calmh/xdr)
+[![MIT License](http://img.shields.io/badge/license-MIT-blue.svg?style=flat)](http://opensource.org/licenses/MIT)
+
+This is an XDR encoding/decoding library. It uses code generation and
+not reflection. It supports the IPDR bastardized XDR format when built
+with `-tags ipdr`.
+

Godeps/_workspace/src/github.com/calmh/xdr/bench_test.go

@@ -0,0 +1,88 @@
+// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
+// is governed by an MIT-style license that can be found in the LICENSE file.
+
+package xdr_test
+
+import (
+	"io"
+	"io/ioutil"
+	"testing"
+)
+
+type XDRBenchStruct struct {
+	I1  uint64
+	I2  uint32
+	I3  uint16
+	I4  uint8
+	Bs0 []byte // max:128
+	Bs1 []byte
+	S0  string // max:128
+	S1  string
+}
+
+var res []byte // no to be optimized away
+var s = XDRBenchStruct{
+	I1:  42,
+	I2:  43,
+	I3:  44,
+	I4:  45,
+	Bs0: []byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18},
+	Bs1: []byte{11, 12, 13, 14, 15, 16, 17, 18, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10},
+	S0:  "Hello World! String one.",
+	S1:  "Hello World! String two.",
+}
+var e = s.MarshalXDR()
+
+func BenchmarkThisMarshal(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		res = s.MarshalXDR()
+	}
+}
+
+func BenchmarkThisUnmarshal(b *testing.B) {
+	var t XDRBenchStruct
+	for i := 0; i < b.N; i++ {
+		err := t.UnmarshalXDR(e)
+		if err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+func BenchmarkThisEncode(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		_, err := s.EncodeXDR(ioutil.Discard)
+		if err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+type repeatReader struct {
+	data []byte
+}
+
+func (r *repeatReader) Read(bs []byte) (n int, err error) {
+	if len(bs) > len(r.data) {
+		err = io.EOF
+	}
+	n = copy(bs, r.data)
+	r.data = r.data[n:]
+	return n, err
+}
+
+func (r *repeatReader) Reset(bs []byte) {
+	r.data = bs
+}
+
+func BenchmarkThisDecode(b *testing.B) {
+	rr := &repeatReader{e}
+	var t XDRBenchStruct
+	for i := 0; i < b.N; i++ {
+		err := t.DecodeXDR(rr)
+		if err != nil {
+			b.Fatal(err)
+		}
+		rr.Reset(e)
+	}
+}

Godeps/_workspace/src/github.com/calmh/xdr/bench_xdr_test.go

@@ -0,0 +1,183 @@
+// ************************************************************
+// This file is automatically generated by genxdr. Do not edit.
+// ************************************************************
+
+package xdr_test
+
+import (
+	"bytes"
+	"io"
+
+	"github.com/calmh/xdr"
+)
+
+/*
+
+XDRBenchStruct Structure:
+
+ 0                   1                   2                   3
+ 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                                                               |
++                         I1 (64 bits)                          +
+|                                                               |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                              I2                               |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|            0x0000             |              I3               |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                             uint8                             |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                         Length of Bs0                         |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+/                                                               /
+\                     Bs0 (variable length)                     \
+/                                                               /
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                         Length of Bs1                         |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+/                                                               /
+\                     Bs1 (variable length)                     \
+/                                                               /
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                         Length of S0                          |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+/                                                               /
+\                     S0 (variable length)                      \
+/                                                               /
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                         Length of S1                          |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+/                                                               /
+\                     S1 (variable length)                      \
+/                                                               /
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+
+struct XDRBenchStruct {
+	unsigned hyper I1;
+	unsigned int I2;
+	unsigned int I3;
+	uint8 I4;
+	opaque Bs0<128>;
+	opaque Bs1<>;
+	string S0<128>;
+	string S1<>;
+}
+
+*/
+
+func (o XDRBenchStruct) EncodeXDR(w io.Writer) (int, error) {
+	var xw = xdr.NewWriter(w)
+	return o.encodeXDR(xw)
+}
+
+func (o XDRBenchStruct) MarshalXDR() []byte {
+	return o.AppendXDR(make([]byte, 0, 128))
+}
+
+func (o XDRBenchStruct) AppendXDR(bs []byte) []byte {
+	var aw = xdr.AppendWriter(bs)
+	var xw = xdr.NewWriter(&aw)
+	o.encodeXDR(xw)
+	return []byte(aw)
+}
+
+func (o XDRBenchStruct) encodeXDR(xw *xdr.Writer) (int, error) {
+	xw.WriteUint64(o.I1)
+	xw.WriteUint32(o.I2)
+	xw.WriteUint16(o.I3)
+	xw.WriteUint8(o.I4)
+	if len(o.Bs0) > 128 {
+		return xw.Tot(), xdr.ErrElementSizeExceeded
+	}
+	xw.WriteBytes(o.Bs0)
+	xw.WriteBytes(o.Bs1)
+	if len(o.S0) > 128 {
+		return xw.Tot(), xdr.ErrElementSizeExceeded
+	}
+	xw.WriteString(o.S0)
+	xw.WriteString(o.S1)
+	return xw.Tot(), xw.Error()
+}
+
+func (o *XDRBenchStruct) DecodeXDR(r io.Reader) error {
+	xr := xdr.NewReader(r)
+	return o.decodeXDR(xr)
+}
+
+func (o *XDRBenchStruct) UnmarshalXDR(bs []byte) error {
+	var br = bytes.NewReader(bs)
+	var xr = xdr.NewReader(br)
+	return o.decodeXDR(xr)
+}
+
+func (o *XDRBenchStruct) decodeXDR(xr *xdr.Reader) error {
+	o.I1 = xr.ReadUint64()
+	o.I2 = xr.ReadUint32()
+	o.I3 = xr.ReadUint16()
+	o.I4 = xr.ReadUint8()
+	o.Bs0 = xr.ReadBytesMax(128)
+	o.Bs1 = xr.ReadBytes()
+	o.S0 = xr.ReadStringMax(128)
+	o.S1 = xr.ReadString()
+	return xr.Error()
+}
+
+/*
+
+repeatReader Structure:
+
+ 0                   1                   2                   3
+ 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                        Length of data                         |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+/                                                               /
+\                    data (variable length)                     \
+/                                                               /
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+
+struct repeatReader {
+	opaque data<>;
+}
+
+*/
+
+func (o repeatReader) EncodeXDR(w io.Writer) (int, error) {
+	var xw = xdr.NewWriter(w)
+	return o.encodeXDR(xw)
+}
+
+func (o repeatReader) MarshalXDR() []byte {
+	return o.AppendXDR(make([]byte, 0, 128))
+}
+
+func (o repeatReader) AppendXDR(bs []byte) []byte {
+	var aw = xdr.AppendWriter(bs)
+	var xw = xdr.NewWriter(&aw)
+	o.encodeXDR(xw)
+	return []byte(aw)
+}
+
+func (o repeatReader) encodeXDR(xw *xdr.Writer) (int, error) {
+	xw.WriteBytes(o.data)
+	return xw.Tot(), xw.Error()
+}
+
+func (o *repeatReader) DecodeXDR(r io.Reader) error {
+	xr := xdr.NewReader(r)
+	return o.decodeXDR(xr)
+}
+
+func (o *repeatReader) UnmarshalXDR(bs []byte) error {
+	var br = bytes.NewReader(bs)
+	var xr = xdr.NewReader(br)
+	return o.decodeXDR(xr)
+}
+
+func (o *repeatReader) decodeXDR(xr *xdr.Reader) error {
+	o.data = xr.ReadBytes()
+	return xr.Error()
+}

Godeps/_workspace/src/github.com/calmh/xdr/cmd/genxdr/main.go

@@ -1,6 +1,5 @@
-// Copyright (C) 2014 Jakob Borg and other contributors. All rights reserved.
-// Use of this source code is governed by an MIT-style license that can be
-// found in the LICENSE file.
+// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
+// is governed by an MIT-style license that can be found in the LICENSE file.
 
 package main
 
@@ -19,27 +18,32 @@ import (
 	"text/template"
 )
 
-var output string
-
-type field struct {
+type fieldInfo struct {
 	Name      string
-	IsBasic   bool
-	IsSlice   bool
-	IsMap     bool
-	FieldType string
-	KeyType   string
-	Encoder   string
-	Convert   string
-	Max       int
+	IsBasic   bool   // handled by one the native Read/WriteUint64 etc functions
+	IsSlice   bool   // field is a slice of FieldType
+	FieldType string // original type of field, i.e. "int"
+	Encoder   string // the encoder name, i.e. "Uint64" for Read/WriteUint64
+	Convert   string // what to convert to when encoding, i.e. "uint64"
+	Max       int    // max size for slices and strings
 }
 
-var headerTpl = template.Must(template.New("header").Parse(`package {{.Package}}
+type structInfo struct {
+	Name   string
+	Fields []fieldInfo
+}
+
+var headerTpl = template.Must(template.New("header").Parse(`// ************************************************************
+// This file is automatically generated by genxdr. Do not edit.
+// ************************************************************
+
+package {{.Package}}
 
 import (
 	"bytes"
 	"io"
 
-	"github.com/calmh/syncthing/xdr"
+	"github.com/calmh/xdr"
 )
 `))
 
@@ -50,44 +54,54 @@ func (o {{.TypeName}}) EncodeXDR(w io.Writer) (int, error) {
 }//+n
 
 func (o {{.TypeName}}) MarshalXDR() []byte {
-	var buf bytes.Buffer
-	var xw = xdr.NewWriter(&buf)
+	return o.AppendXDR(make([]byte, 0, 128))
+}//+n
+
+func (o {{.TypeName}}) AppendXDR(bs []byte) []byte {
+	var aw = xdr.AppendWriter(bs)
+	var xw = xdr.NewWriter(&aw)
 	o.encodeXDR(xw)
-	return buf.Bytes()
+	return []byte(aw)
 }//+n
 
 func (o {{.TypeName}}) encodeXDR(xw *xdr.Writer) (int, error) {
-	{{range $field := .Fields}}
-	{{if not $field.IsSlice}}
-		{{if ne $field.Convert ""}}
-		xw.Write{{$field.Encoder}}({{$field.Convert}}(o.{{$field.Name}}))
-		{{else if $field.IsBasic}}
-		{{if ge $field.Max 1}}
-		if len(o.{{$field.Name}}) > {{$field.Max}} {
-			return xw.Tot(), xdr.ErrElementSizeExceeded
-		}
-		{{end}}
-		xw.Write{{$field.Encoder}}(o.{{$field.Name}})
+	{{range $fieldInfo := .Fields}}
+		{{if not $fieldInfo.IsSlice}}
+			{{if ne $fieldInfo.Convert ""}}
+				xw.Write{{$fieldInfo.Encoder}}({{$fieldInfo.Convert}}(o.{{$fieldInfo.Name}}))
+			{{else if $fieldInfo.IsBasic}}
+				{{if ge $fieldInfo.Max 1}}
+					if len(o.{{$fieldInfo.Name}}) > {{$fieldInfo.Max}} {
+						return xw.Tot(), xdr.ErrElementSizeExceeded
+					}
+				{{end}}
+				xw.Write{{$fieldInfo.Encoder}}(o.{{$fieldInfo.Name}})
+			{{else}}
+				_, err := o.{{$fieldInfo.Name}}.encodeXDR(xw)
+				if err != nil {
+					return xw.Tot(), err
+				}
+			{{end}}
 		{{else}}
-		o.{{$field.Name}}.encodeXDR(xw)
+			{{if ge $fieldInfo.Max 1}}
+				if len(o.{{$fieldInfo.Name}}) > {{$fieldInfo.Max}} {
+					return xw.Tot(), xdr.ErrElementSizeExceeded
+				}
+			{{end}}
+			xw.WriteUint32(uint32(len(o.{{$fieldInfo.Name}})))
+			for i := range o.{{$fieldInfo.Name}} {
+			{{if ne $fieldInfo.Convert ""}}
+				xw.Write{{$fieldInfo.Encoder}}({{$fieldInfo.Convert}}(o.{{$fieldInfo.Name}}[i]))
+			{{else if $fieldInfo.IsBasic}}
+				xw.Write{{$fieldInfo.Encoder}}(o.{{$fieldInfo.Name}}[i])
+			{{else}}
+				_, err := o.{{$fieldInfo.Name}}[i].encodeXDR(xw)
+				if err != nil {
+					return xw.Tot(), err
+				}
+			{{end}}
+			}
 		{{end}}
-	{{else}}
-	{{if ge $field.Max 1}}
-	if len(o.{{$field.Name}}) > {{$field.Max}} {
-		return xw.Tot(), xdr.ErrElementSizeExceeded
-	}
-	{{end}}
-	xw.WriteUint32(uint32(len(o.{{$field.Name}})))
-	for i := range o.{{$field.Name}} {
-		{{if ne $field.Convert ""}}
-		xw.Write{{$field.Encoder}}({{$field.Convert}}(o.{{$field.Name}}[i]))
-		{{else if $field.IsBasic}}
-		xw.Write{{$field.Encoder}}(o.{{$field.Name}}[i])
-		{{else}}
-		o.{{$field.Name}}[i].encodeXDR(xw)
-		{{end}}
-	}
-	{{end}}
 	{{end}}
 	return xw.Tot(), xw.Error()
 }//+n
@@ -98,43 +112,43 @@ func (o *{{.TypeName}}) DecodeXDR(r io.Reader) error {
 }//+n
 
 func (o *{{.TypeName}}) UnmarshalXDR(bs []byte) error {
-	var buf = bytes.NewBuffer(bs)
-	var xr = xdr.NewReader(buf)
+	var br = bytes.NewReader(bs)
+	var xr = xdr.NewReader(br)
 	return o.decodeXDR(xr)
 }//+n
 
 func (o *{{.TypeName}}) decodeXDR(xr *xdr.Reader) error {
-	{{range $field := .Fields}}
-	{{if not $field.IsSlice}}
-		{{if ne $field.Convert ""}}
-		o.{{$field.Name}} = {{$field.FieldType}}(xr.Read{{$field.Encoder}}())
-		{{else if $field.IsBasic}}
-		{{if ge $field.Max 1}}
-		o.{{$field.Name}} = xr.Read{{$field.Encoder}}Max({{$field.Max}})
+	{{range $fieldInfo := .Fields}}
+		{{if not $fieldInfo.IsSlice}}
+			{{if ne $fieldInfo.Convert ""}}
+				o.{{$fieldInfo.Name}} = {{$fieldInfo.FieldType}}(xr.Read{{$fieldInfo.Encoder}}())
+			{{else if $fieldInfo.IsBasic}}
+				{{if ge $fieldInfo.Max 1}}
+					o.{{$fieldInfo.Name}} = xr.Read{{$fieldInfo.Encoder}}Max({{$fieldInfo.Max}})
+				{{else}}
+					o.{{$fieldInfo.Name}} = xr.Read{{$fieldInfo.Encoder}}()
+				{{end}}
+			{{else}}
+				(&o.{{$fieldInfo.Name}}).decodeXDR(xr)
+			{{end}}
 		{{else}}
-		o.{{$field.Name}} = xr.Read{{$field.Encoder}}()
+			_{{$fieldInfo.Name}}Size := int(xr.ReadUint32())
+			{{if ge $fieldInfo.Max 1}}
+				if _{{$fieldInfo.Name}}Size > {{$fieldInfo.Max}} {
+					return xdr.ErrElementSizeExceeded
+				}
+			{{end}}
+			o.{{$fieldInfo.Name}} = make([]{{$fieldInfo.FieldType}}, _{{$fieldInfo.Name}}Size)
+			for i := range o.{{$fieldInfo.Name}} {
+				{{if ne $fieldInfo.Convert ""}}
+					o.{{$fieldInfo.Name}}[i] = {{$fieldInfo.FieldType}}(xr.Read{{$fieldInfo.Encoder}}())
+				{{else if $fieldInfo.IsBasic}}
+					o.{{$fieldInfo.Name}}[i] = xr.Read{{$fieldInfo.Encoder}}()
+				{{else}}
+					(&o.{{$fieldInfo.Name}}[i]).decodeXDR(xr)
+				{{end}}
+			}
 		{{end}}
-		{{else}}
-		(&o.{{$field.Name}}).decodeXDR(xr)
-		{{end}}
-	{{else}}
-	_{{$field.Name}}Size := int(xr.ReadUint32())
-	{{if ge $field.Max 1}}
-	if _{{$field.Name}}Size > {{$field.Max}} {
-		return xdr.ErrElementSizeExceeded
-	}
-	{{end}}
-	o.{{$field.Name}} = make([]{{$field.FieldType}}, _{{$field.Name}}Size)
-	for i := range o.{{$field.Name}} {
-		{{if ne $field.Convert ""}}
-		o.{{$field.Name}}[i] = {{$field.FieldType}}(xr.Read{{$field.Encoder}}())
-		{{else if $field.IsBasic}}
-		o.{{$field.Name}}[i] = xr.Read{{$field.Encoder}}()
-		{{else}}
-		(&o.{{$field.Name}}[i]).decodeXDR(xr)
-		{{end}}
-	}
-	{{end}}
 	{{end}}
 	return xr.Error()
 }`))
@@ -147,6 +161,8 @@ type typeSet struct {
 }
 
 var xdrEncoders = map[string]typeSet{
+	"int8":   typeSet{"uint8", "Uint8"},
+	"uint8":  typeSet{"", "Uint8"},
 	"int16":  typeSet{"uint16", "Uint16"},
 	"uint16": typeSet{"", "Uint16"},
 	"int32":  typeSet{"uint32", "Uint32"},
@@ -159,8 +175,9 @@ var xdrEncoders = map[string]typeSet{
 	"bool":   typeSet{"", "Bool"},
 }
 
-func handleStruct(name string, t *ast.StructType) {
-	var fs []field
+func handleStruct(t *ast.StructType) []fieldInfo {
+	var fs []fieldInfo
+
 	for _, sf := range t.Fields.List {
 		if len(sf.Names) == 0 {
 			// We don't handle anonymous fields
@@ -174,14 +191,17 @@ func handleStruct(name string, t *ast.StructType) {
 			if m := maxRe.FindStringSubmatch(c); m != nil {
 				max, _ = strconv.Atoi(m[1])
 			}
+			if strings.Contains(c, "noencode") {
+				continue
+			}
 		}
 
-		var f field
+		var f fieldInfo
 		switch ft := sf.Type.(type) {
 		case *ast.Ident:
 			tn := ft.Name
 			if enc, ok := xdrEncoders[tn]; ok {
-				f = field{
+				f = fieldInfo{
 					Name:      fn,
 					IsBasic:   true,
 					FieldType: tn,
@@ -190,7 +210,7 @@ func handleStruct(name string, t *ast.StructType) {
 					Max:       max,
 				}
 			} else {
-				f = field{
+				f = fieldInfo{
 					Name:      fn,
 					IsBasic:   false,
 					FieldType: tn,
@@ -206,7 +226,7 @@ func handleStruct(name string, t *ast.StructType) {
 
 			tn := ft.Elt.(*ast.Ident).Name
 			if enc, ok := xdrEncoders["[]"+tn]; ok {
-				f = field{
+				f = fieldInfo{
 					Name:      fn,
 					IsBasic:   true,
 					FieldType: tn,
@@ -215,7 +235,7 @@ func handleStruct(name string, t *ast.StructType) {
 					Max:       max,
 				}
 			} else if enc, ok := xdrEncoders[tn]; ok {
-				f = field{
+				f = fieldInfo{
 					Name:      fn,
 					IsBasic:   true,
 					IsSlice:   true,
@@ -225,7 +245,7 @@ func handleStruct(name string, t *ast.StructType) {
 					Max:       max,
 				}
 			} else {
-				f = field{
+				f = fieldInfo{
 					Name:      fn,
 					IsBasic:   false,
 					IsSlice:   true,
@@ -238,17 +258,13 @@ func handleStruct(name string, t *ast.StructType) {
 		fs = append(fs, f)
 	}
 
-	switch output {
-	case "code":
-		generateCode(name, fs)
-	case "diagram":
-		generateDiagram(name, fs)
-	case "xdr":
-		generateXdr(name, fs)
-	}
+	return fs
 }
 
-func generateCode(name string, fs []field) {
+func generateCode(s structInfo) {
+	name := s.Name
+	fs := s.Fields
+
 	var buf bytes.Buffer
 	err := encodeTpl.Execute(&buf, map[string]interface{}{"TypeName": name, "Fields": fs})
 	if err != nil {
@@ -265,7 +281,16 @@ func generateCode(name string, fs []field) {
 	fmt.Println(string(bs))
 }
 
-func generateDiagram(sn string, fs []field) {
+func uncamelize(s string) string {
+	return regexp.MustCompile("[a-z][A-Z]").ReplaceAllStringFunc(s, func(camel string) string {
+		return camel[:1] + " " + camel[1:]
+	})
+}
+
+func generateDiagram(s structInfo) {
+	sn := s.Name
+	fs := s.Fields
+
 	fmt.Println(sn + " Structure:")
 	fmt.Println()
 	fmt.Println(" 0                   1                   2                   3")
@@ -276,28 +301,32 @@ func generateDiagram(sn string, fs []field) {
 	for _, f := range fs {
 		tn := f.FieldType
 		sl := f.IsSlice
+		name := uncamelize(f.Name)
 
 		if sl {
-			fmt.Printf("| %s |\n", center("Number of "+f.Name, 61))
+			fmt.Printf("| %s |\n", center("Number of "+name, 61))
 			fmt.Println(line)
 		}
 		switch tn {
+		case "bool":
+			fmt.Printf("| %s |V|\n", center(name+" (V=0 or 1)", 59))
+			fmt.Println(line)
 		case "uint16":
-			fmt.Printf("| %s | %s |\n", center(f.Name, 29), center("0x0000", 29))
+			fmt.Printf("| %s | %s |\n", center("0x0000", 29), center(name, 29))
 			fmt.Println(line)
 		case "uint32":
-			fmt.Printf("| %s |\n", center(f.Name, 61))
+			fmt.Printf("| %s |\n", center(name, 61))
 			fmt.Println(line)
 		case "int64", "uint64":
 			fmt.Printf("| %-61s |\n", "")
-			fmt.Printf("+ %s +\n", center(f.Name+" (64 bits)", 61))
+			fmt.Printf("+ %s +\n", center(name+" (64 bits)", 61))
 			fmt.Printf("| %-61s |\n", "")
 			fmt.Println(line)
 		case "string", "byte": // XXX We assume slice of byte!
-			fmt.Printf("| %s |\n", center("Length of "+f.Name, 61))
+			fmt.Printf("| %s |\n", center("Length of "+name, 61))
 			fmt.Println(line)
 			fmt.Printf("/ %61s /\n", "")
-			fmt.Printf("\\ %s \\\n", center(f.Name+" (variable length)", 61))
+			fmt.Printf("\\ %s \\\n", center(name+" (variable length)", 61))
 			fmt.Printf("/ %61s /\n", "")
 			fmt.Println(line)
 		default:
@@ -316,30 +345,35 @@ func generateDiagram(sn string, fs []field) {
 	fmt.Println()
 }
 
-func generateXdr(sn string, fs []field) {
+func generateXdr(s structInfo) {
+	sn := s.Name
+	fs := s.Fields
+
 	fmt.Printf("struct %s {\n", sn)
 
 	for _, f := range fs {
 		tn := f.FieldType
 		fn := f.Name
 		suf := ""
+		l := ""
+		if f.Max > 0 {
+			l = strconv.Itoa(f.Max)
+		}
 		if f.IsSlice {
-			suf = "<>"
+			suf = "<" + l + ">"
 		}
 
 		switch tn {
-		case "uint16":
-			fmt.Printf("\tunsigned short %s%s;\n", fn, suf)
-		case "uint32":
+		case "uint16", "uint32":
 			fmt.Printf("\tunsigned int %s%s;\n", fn, suf)
 		case "int64":
 			fmt.Printf("\thyper %s%s;\n", fn, suf)
 		case "uint64":
 			fmt.Printf("\tunsigned hyper %s%s;\n", fn, suf)
 		case "string":
-			fmt.Printf("\tstring %s<>;\n", fn)
+			fmt.Printf("\tstring %s<%s>;\n", fn, l)
 		case "byte":
-			fmt.Printf("\topaque %s<>;\n", fn)
+			fmt.Printf("\topaque %s<%s>;\n", fn, l)
 		default:
 			fmt.Printf("\t%s %s%s;\n", tn, fn, suf)
 		}
@@ -358,14 +392,15 @@ func center(s string, w int) string {
 	return strings.Repeat(" ", l) + s + strings.Repeat(" ", r)
 }
 
-func inspector(fset *token.FileSet) func(ast.Node) bool {
+func inspector(structs *[]structInfo) func(ast.Node) bool {
 	return func(n ast.Node) bool {
 		switch n := n.(type) {
 		case *ast.TypeSpec:
 			switch t := n.Type.(type) {
 			case *ast.StructType:
 				name := n.Name.Name
-				handleStruct(name, t)
+				fs := handleStruct(t)
+				*structs = append(*structs, structInfo{name, fs})
 			}
 			return false
 		default:
@@ -375,23 +410,25 @@ func inspector(fset *token.FileSet) func(ast.Node) bool {
 }
 
 func main() {
-	flag.StringVar(&output, "output", "code", "code,xdr,diagram")
 	flag.Parse()
 	fname := flag.Arg(0)
 
-	// Create the AST by parsing src.
-	fset := token.NewFileSet() // positions are relative to fset
+	fset := token.NewFileSet()
 	f, err := parser.ParseFile(fset, fname, nil, parser.ParseComments)
 	if err != nil {
 		panic(err)
 	}
 
-	//ast.Print(fset, f)
-
-	if output == "code" {
-		headerTpl.Execute(os.Stdout, map[string]string{"Package": f.Name.Name})
-	}
-
-	i := inspector(fset)
+	var structs []structInfo
+	i := inspector(&structs)
 	ast.Inspect(f, i)
+
+	headerTpl.Execute(os.Stdout, map[string]string{"Package": f.Name.Name})
+	for _, s := range structs {
+		fmt.Printf("\n/*\n\n")
+		generateDiagram(s)
+		generateXdr(s)
+		fmt.Printf("*/\n")
+		generateCode(s)
+	}
 }

Godeps/_workspace/src/github.com/calmh/xdr/debug.go

@@ -0,0 +1,16 @@
+// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
+// is governed by an MIT-style license that can be found in the LICENSE file.
+
+package xdr
+
+import (
+	"log"
+	"os"
+)
+
+var (
+	debug = len(os.Getenv("XDRTRACE")) > 0
+	dl    = log.New(os.Stdout, "xdr: ", log.Lshortfile|log.Ltime|log.Lmicroseconds)
+)
+
+const maxDebugBytes = 32

Godeps/_workspace/src/github.com/calmh/xdr/doc.go

@@ -0,0 +1,5 @@
+// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
+// is governed by an MIT-style license that can be found in the LICENSE file.
+
+// Package xdr implements an XDR (RFC 4506) encoder/decoder.
+package xdr

Godeps/_workspace/src/github.com/calmh/xdr/encdec_test.go

@@ -0,0 +1,75 @@
+// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
+// is governed by an MIT-style license that can be found in the LICENSE file.
+
+package xdr_test
+
+import (
+	"bytes"
+	"math/rand"
+	"reflect"
+	"testing"
+	"testing/quick"
+
+	"github.com/calmh/xdr"
+)
+
+// Contains all supported types
+type TestStruct struct {
+	I    int
+	I8   int8
+	UI8  uint8
+	I16  int16
+	UI16 uint16
+	I32  int32
+	UI32 uint32
+	I64  int64
+	UI64 uint64
+	BS   []byte
+	S    string
+	C    Opaque
+}
+
+type Opaque [32]byte
+
+func (u *Opaque) encodeXDR(w *xdr.Writer) (int, error) {
+	return w.WriteRaw(u[:])
+}
+
+func (u *Opaque) decodeXDR(r *xdr.Reader) (int, error) {
+	return r.ReadRaw(u[:])
+}
+
+func (Opaque) Generate(rand *rand.Rand, size int) reflect.Value {
+	var u Opaque
+	for i := range u[:] {
+		u[i] = byte(rand.Int())
+	}
+	return reflect.ValueOf(u)
+}
+
+func TestEncDec(t *testing.T) {
+	fn := func(t0 TestStruct) bool {
+		bs := t0.MarshalXDR()
+		var t1 TestStruct
+		err := t1.UnmarshalXDR(bs)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		// Not comparing with DeepEqual since we'll unmarshal nil slices as empty
+		if t0.I != t1.I ||
+			t0.I16 != t1.I16 || t0.UI16 != t1.UI16 ||
+			t0.I32 != t1.I32 || t0.UI32 != t1.UI32 ||
+			t0.I64 != t1.I64 || t0.UI64 != t1.UI64 ||
+			bytes.Compare(t0.BS, t1.BS) != 0 ||
+			t0.S != t1.S || t0.C != t1.C {
+			t.Logf("%#v", t0)
+			t.Logf("%#v", t1)
+			return false
+		}
+		return true
+	}
+	if err := quick.Check(fn, nil); err != nil {
+		t.Error(err)
+	}
+}

Godeps/_workspace/src/github.com/calmh/xdr/encdec_xdr_test.go

@@ -0,0 +1,136 @@
+// ************************************************************
+// This file is automatically generated by genxdr. Do not edit.
+// ************************************************************
+
+package xdr_test
+
+import (
+	"bytes"
+	"io"
+
+	"github.com/calmh/xdr"
+)
+
+/*
+
+TestStruct Structure:
+
+ 0                   1                   2                   3
+ 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                              int                              |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                             int8                              |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                             uint8                             |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                             int16                             |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|            0x0000             |             UI16              |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                             int32                             |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                             UI32                              |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                                                               |
++                         I64 (64 bits)                         +
+|                                                               |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                                                               |
++                        UI64 (64 bits)                         +
+|                                                               |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                         Length of BS                          |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+/                                                               /
+\                     BS (variable length)                      \
+/                                                               /
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                          Length of S                          |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+/                                                               /
+\                      S (variable length)                      \
+/                                                               /
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                            Opaque                             |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+
+struct TestStruct {
+	int I;
+	int8 I8;
+	uint8 UI8;
+	int16 I16;
+	unsigned int UI16;
+	int32 I32;
+	unsigned int UI32;
+	hyper I64;
+	unsigned hyper UI64;
+	opaque BS<>;
+	string S<>;
+	Opaque C;
+}
+
+*/
+
+func (o TestStruct) EncodeXDR(w io.Writer) (int, error) {
+	var xw = xdr.NewWriter(w)
+	return o.encodeXDR(xw)
+}
+
+func (o TestStruct) MarshalXDR() []byte {
+	return o.AppendXDR(make([]byte, 0, 128))
+}
+
+func (o TestStruct) AppendXDR(bs []byte) []byte {
+	var aw = xdr.AppendWriter(bs)
+	var xw = xdr.NewWriter(&aw)
+	o.encodeXDR(xw)
+	return []byte(aw)
+}
+
+func (o TestStruct) encodeXDR(xw *xdr.Writer) (int, error) {
+	xw.WriteUint64(uint64(o.I))
+	xw.WriteUint8(uint8(o.I8))
+	xw.WriteUint8(o.UI8)
+	xw.WriteUint16(uint16(o.I16))
+	xw.WriteUint16(o.UI16)
+	xw.WriteUint32(uint32(o.I32))
+	xw.WriteUint32(o.UI32)
+	xw.WriteUint64(uint64(o.I64))
+	xw.WriteUint64(o.UI64)
+	xw.WriteBytes(o.BS)
+	xw.WriteString(o.S)
+	_, err := o.C.encodeXDR(xw)
+	if err != nil {
+		return xw.Tot(), err
+	}
+	return xw.Tot(), xw.Error()
+}
+
+func (o *TestStruct) DecodeXDR(r io.Reader) error {
+	xr := xdr.NewReader(r)
+	return o.decodeXDR(xr)
+}
+
+func (o *TestStruct) UnmarshalXDR(bs []byte) error {
+	var br = bytes.NewReader(bs)
+	var xr = xdr.NewReader(br)
+	return o.decodeXDR(xr)
+}
+
+func (o *TestStruct) decodeXDR(xr *xdr.Reader) error {
+	o.I = int(xr.ReadUint64())
+	o.I8 = int8(xr.ReadUint8())
+	o.UI8 = xr.ReadUint8()
+	o.I16 = int16(xr.ReadUint16())
+	o.UI16 = xr.ReadUint16()
+	o.I32 = int32(xr.ReadUint32())
+	o.UI32 = xr.ReadUint32()
+	o.I64 = int64(xr.ReadUint64())
+	o.UI64 = xr.ReadUint64()
+	o.BS = xr.ReadBytes()
+	o.S = xr.ReadString()
+	(&o.C).decodeXDR(xr)
+	return xr.Error()
+}

Godeps/_workspace/src/github.com/calmh/xdr/generate.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+go run cmd/genxdr/main.go -- bench_test.go > bench_xdr_test.go
+go run cmd/genxdr/main.go -- encdec_test.go > encdec_xdr_test.go

Godeps/_workspace/src/github.com/calmh/xdr/pad_ipdr.go

@@ -0,0 +1,10 @@
+// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
+// is governed by an MIT-style license that can be found in the LICENSE file.
+
+// +build ipdr
+
+package xdr
+
+func pad(l int) int {
+	return 0
+}

Godeps/_workspace/src/github.com/calmh/xdr/pad_xdr.go

@@ -0,0 +1,14 @@
+// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
+// is governed by an MIT-style license that can be found in the LICENSE file.
+
+// +build !ipdr
+
+package xdr
+
+func pad(l int) int {
+	d := l % 4
+	if d == 0 {
+		return 0
+	}
+	return 4 - d
+}

Godeps/_workspace/src/github.com/calmh/xdr/reader.go

@@ -1,23 +1,21 @@
-// Copyright (C) 2014 Jakob Borg and other contributors. All rights reserved.
-// Use of this source code is governed by an MIT-style license that can be
-// found in the LICENSE file.
+// Copyright (C) 2014 Jakob Borg and Contributors (see the CONTRIBUTORS file).
+// All rights reserved. Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
 
 package xdr
 
 import (
 	"errors"
 	"io"
-	"time"
 )
 
 var ErrElementSizeExceeded = errors.New("element size exceeded")
 
 type Reader struct {
-	r    io.Reader
-	tot  int
-	err  error
-	b    [8]byte
-	last time.Time
+	r   io.Reader
+	err error
+	b   [8]byte
+	sb  []byte
 }
 
 func NewReader(r io.Reader) *Reader {
@@ -26,12 +24,34 @@ func NewReader(r io.Reader) *Reader {
 	}
 }
 
+func (r *Reader) ReadRaw(bs []byte) (int, error) {
+	if r.err != nil {
+		return 0, r.err
+	}
+
+	var n int
+	n, r.err = io.ReadFull(r.r, bs)
+	return n, r.err
+}
+
 func (r *Reader) ReadString() string {
-	return string(r.ReadBytes())
+	if r.sb == nil {
+		r.sb = make([]byte, 64)
+	} else {
+		r.sb = r.sb[:cap(r.sb)]
+	}
+	r.sb = r.ReadBytesInto(r.sb)
+	return string(r.sb)
 }
 
 func (r *Reader) ReadStringMax(max int) string {
-	return string(r.ReadBytesMax(max))
+	if r.sb == nil {
+		r.sb = make([]byte, 64)
+	} else {
+		r.sb = r.sb[:cap(r.sb)]
+	}
+	r.sb = r.ReadBytesMaxInto(max, r.sb)
+	return string(r.sb)
 }
 
 func (r *Reader) ReadBytes() []byte {
@@ -50,8 +70,6 @@ func (r *Reader) ReadBytesMaxInto(max int, dst []byte) []byte {
 	if r.err != nil {
 		return nil
 	}
-	r.last = time.Now()
-	s := r.tot
 
 	l := int(r.ReadUint32())
 	if r.err != nil {
@@ -72,60 +90,34 @@ func (r *Reader) ReadBytesMaxInto(max int, dst []byte) []byte {
 	n, r.err = io.ReadFull(r.r, dst)
 	if r.err != nil {
 		if debug {
-			dl.Debugf("@0x%x: rd bytes (%d): %v", s, len(dst), r.err)
+			dl.Printf("rd bytes (%d): %v", len(dst), r.err)
 		}
 		return nil
 	}
-	r.tot += n
 
 	if debug {
 		if n > maxDebugBytes {
-			dl.Debugf("@0x%x: rd bytes (%d): %x...", s, len(dst), dst[:maxDebugBytes])
+			dl.Printf("rd bytes (%d): %x...", len(dst), dst[:maxDebugBytes])
 		} else {
-			dl.Debugf("@0x%x: rd bytes (%d): %x", s, len(dst), dst)
+			dl.Printf("rd bytes (%d): %x", len(dst), dst)
 		}
 	}
 	return dst[:l]
 }
 
-func (r *Reader) ReadUint16() uint16 {
-	if r.err != nil {
-		return 0
-	}
-	r.last = time.Now()
-	s := r.tot
-
-	var n int
-	n, r.err = io.ReadFull(r.r, r.b[:4])
-	r.tot += n
-	if r.err != nil {
-		if debug {
-			dl.Debugf("@0x%x: rd uint16: %v", r.tot, r.err)
-		}
-		return 0
-	}
-
-	v := uint16(r.b[1]) | uint16(r.b[0])<<8
-
-	if debug {
-		dl.Debugf("@0x%x: rd uint16=%d (0x%04x)", s, v, v)
-	}
-	return v
+func (r *Reader) ReadBool() bool {
+	return r.ReadUint8() != 0
 }
 
 func (r *Reader) ReadUint32() uint32 {
 	if r.err != nil {
 		return 0
 	}
-	r.last = time.Now()
-	s := r.tot
 
-	var n int
-	n, r.err = io.ReadFull(r.r, r.b[:4])
-	r.tot += n
+	_, r.err = io.ReadFull(r.r, r.b[:4])
 	if r.err != nil {
 		if debug {
-			dl.Debugf("@0x%x: rd uint32: %v", r.tot, r.err)
+			dl.Printf("rd uint32: %v", r.err)
 		}
 		return 0
 	}
@@ -133,7 +125,7 @@ func (r *Reader) ReadUint32() uint32 {
 	v := uint32(r.b[3]) | uint32(r.b[2])<<8 | uint32(r.b[1])<<16 | uint32(r.b[0])<<24
 
 	if debug {
-		dl.Debugf("@0x%x: rd uint32=%d (0x%08x)", s, v, v)
+		dl.Printf("rd uint32=%d (0x%08x)", v, v)
 	}
 	return v
 }
@@ -142,15 +134,11 @@ func (r *Reader) ReadUint64() uint64 {
 	if r.err != nil {
 		return 0
 	}
-	r.last = time.Now()
-	s := r.tot
 
-	var n int
-	n, r.err = io.ReadFull(r.r, r.b[:8])
-	r.tot += n
+	_, r.err = io.ReadFull(r.r, r.b[:8])
 	if r.err != nil {
 		if debug {
-			dl.Debugf("@0x%x: rd uint64: %v", r.tot, r.err)
+			dl.Printf("rd uint64: %v", r.err)
 		}
 		return 0
 	}
@@ -159,19 +147,23 @@ func (r *Reader) ReadUint64() uint64 {
 		uint64(r.b[3])<<32 | uint64(r.b[2])<<40 | uint64(r.b[1])<<48 | uint64(r.b[0])<<56
 
 	if debug {
-		dl.Debugf("@0x%x: rd uint64=%d (0x%016x)", s, v, v)
+		dl.Printf("rd uint64=%d (0x%016x)", v, v)
 	}
 	return v
 }
 
-func (r *Reader) Tot() int {
-	return r.tot
+type XDRError struct {
+	op  string
+	err error
+}
+
+func (e XDRError) Error() string {
+	return "xdr " + e.op + ": " + e.err.Error()
 }
 
 func (r *Reader) Error() error {
-	return r.err
-}
-
-func (r *Reader) LastRead() time.Time {
-	return r.last
+	if r.err == nil {
+		return nil
+	}
+	return XDRError{"read", r.err}
 }

Godeps/_workspace/src/github.com/calmh/xdr/reader_ipdr.go

@@ -0,0 +1,49 @@
+// Copyright (C) 2014 Jakob Borg and Contributors (see the CONTRIBUTORS file).
+// All rights reserved. Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+// +build ipdr
+
+package xdr
+
+import "io"
+
+func (r *Reader) ReadUint8() uint8 {
+	if r.err != nil {
+		return 0
+	}
+
+	_, r.err = io.ReadFull(r.r, r.b[:1])
+	if r.err != nil {
+		if debug {
+			dl.Printf("rd uint8: %v", r.err)
+		}
+		return 0
+	}
+
+	if debug {
+		dl.Printf("rd uint8=%d (0x%08x)", r.b[0], r.b[0])
+	}
+	return r.b[0]
+}
+
+func (r *Reader) ReadUint16() uint16 {
+	if r.err != nil {
+		return 0
+	}
+
+	_, r.err = io.ReadFull(r.r, r.b[:2])
+	if r.err != nil {
+		if debug {
+			dl.Printf("rd uint16: %v", r.err)
+		}
+		return 0
+	}
+
+	v := uint16(r.b[1]) | uint16(r.b[0])<<8
+
+	if debug {
+		dl.Printf("rd uint16=%d (0x%08x)", v, v)
+	}
+	return v
+}

Godeps/_workspace/src/github.com/calmh/xdr/reader_xdr.go

@@ -0,0 +1,15 @@
+// Copyright (C) 2014 Jakob Borg and Contributors (see the CONTRIBUTORS file).
+// All rights reserved. Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+// +build !ipdr
+
+package xdr
+
+func (r *Reader) ReadUint8() uint8 {
+	return uint8(r.ReadUint32())
+}
+
+func (r *Reader) ReadUint16() uint16 {
+	return uint16(r.ReadUint32())
+}

Godeps/_workspace/src/github.com/calmh/xdr/refl_test.go

@@ -0,0 +1,44 @@
+// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
+// is governed by an MIT-style license that can be found in the LICENSE file.
+
+// +build refl
+
+package xdr_test
+
+import (
+	"bytes"
+	"testing"
+
+	refl "github.com/davecgh/go-xdr/xdr"
+)
+
+func TestCompareMarshals(t *testing.T) {
+	e0 := s.MarshalXDR()
+	e1, err := refl.Marshal(s)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if bytes.Compare(e0, e1) != 0 {
+		t.Fatalf("Encoding mismatch;\n\t%x (this)\n\t%x (refl)", e0, e1)
+	}
+}
+
+func BenchmarkReflMarshal(b *testing.B) {
+	var err error
+	for i := 0; i < b.N; i++ {
+		res, err = refl.Marshal(s)
+		if err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+func BenchmarkReflUnmarshal(b *testing.B) {
+	var t XDRBenchStruct
+	for i := 0; i < b.N; i++ {
+		_, err := refl.Unmarshal(e, &t)
+		if err != nil {
+			b.Fatal(err)
+		}
+	}
+}

Godeps/_workspace/src/github.com/calmh/xdr/writer.go

@@ -1,30 +1,24 @@
-// Copyright (C) 2014 Jakob Borg and other contributors. All rights reserved.
-// Use of this source code is governed by an MIT-style license that can be
-// found in the LICENSE file.
+// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
+// is governed by an MIT-style license that can be found in the LICENSE file.
 
 package xdr
 
-import (
-	"io"
-	"time"
-)
-
-func pad(l int) int {
-	d := l % 4
-	if d == 0 {
-		return 0
-	}
-	return 4 - d
-}
+import "io"
 
 var padBytes = []byte{0, 0, 0}
 
 type Writer struct {
-	w    io.Writer
-	tot  int
-	err  error
-	b    [8]byte
-	last time.Time
+	w   io.Writer
+	tot int
+	err error
+	b   [8]byte
+}
+
+type AppendWriter []byte
+
+func (w *AppendWriter) Write(bs []byte) (int, error) {
+	*w = append(*w, bs...)
+	return len(bs), nil
 }
 
 func NewWriter(w io.Writer) *Writer {
@@ -33,6 +27,16 @@ func NewWriter(w io.Writer) *Writer {
 	}
 }
 
+func (w *Writer) WriteRaw(bs []byte) (int, error) {
+	if w.err != nil {
+		return 0, w.err
+	}
+
+	var n int
+	n, w.err = w.w.Write(bs)
+	return n, w.err
+}
+
 func (w *Writer) WriteString(s string) (int, error) {
 	return w.WriteBytes([]byte(s))
 }
@@ -42,7 +46,6 @@ func (w *Writer) WriteBytes(bs []byte) (int, error) {
 		return 0, w.err
 	}
 
-	w.last = time.Now()
 	w.WriteUint32(uint32(len(bs)))
 	if w.err != nil {
 		return 0, w.err
@@ -50,9 +53,9 @@ func (w *Writer) WriteBytes(bs []byte) (int, error) {
 
 	if debug {
 		if len(bs) > maxDebugBytes {
-			dl.Debugf("wr bytes (%d): %x...", len(bs), bs[:maxDebugBytes])
+			dl.Printf("wr bytes (%d): %x...", len(bs), bs[:maxDebugBytes])
 		} else {
-			dl.Debugf("wr bytes (%d): %x", len(bs), bs)
+			dl.Printf("wr bytes (%d): %x", len(bs), bs)
 		}
 	}
 
@@ -69,25 +72,12 @@ func (w *Writer) WriteBytes(bs []byte) (int, error) {
 	return l, w.err
 }
 
-func (w *Writer) WriteUint16(v uint16) (int, error) {
-	if w.err != nil {
-		return 0, w.err
+func (w *Writer) WriteBool(v bool) (int, error) {
+	if v {
+		return w.WriteUint8(1)
+	} else {
+		return w.WriteUint8(0)
 	}
-
-	w.last = time.Now()
-	if debug {
-		dl.Debugf("wr uint16=%d", v)
-	}
-
-	w.b[0] = byte(v >> 8)
-	w.b[1] = byte(v)
-	w.b[2] = 0
-	w.b[3] = 0
-
-	var l int
-	l, w.err = w.w.Write(w.b[:4])
-	w.tot += l
-	return l, w.err
 }
 
 func (w *Writer) WriteUint32(v uint32) (int, error) {
@@ -95,9 +85,8 @@ func (w *Writer) WriteUint32(v uint32) (int, error) {
 		return 0, w.err
 	}
 
-	w.last = time.Now()
 	if debug {
-		dl.Debugf("wr uint32=%d", v)
+		dl.Printf("wr uint32=%d", v)
 	}
 
 	w.b[0] = byte(v >> 24)
@@ -116,9 +105,8 @@ func (w *Writer) WriteUint64(v uint64) (int, error) {
 		return 0, w.err
 	}
 
-	w.last = time.Now()
 	if debug {
-		dl.Debugf("wr uint64=%d", v)
+		dl.Printf("wr uint64=%d", v)
 	}
 
 	w.b[0] = byte(v >> 56)
@@ -141,9 +129,8 @@ func (w *Writer) Tot() int {
 }
 
 func (w *Writer) Error() error {
-	return w.err
-}
-
-func (w *Writer) LastWrite() time.Time {
-	return w.last
+	if w.err == nil {
+		return nil
+	}
+	return XDRError{"write", w.err}
 }

Godeps/_workspace/src/github.com/calmh/xdr/writer_ipdr.go

@@ -0,0 +1,41 @@
+// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
+// is governed by an MIT-style license that can be found in the LICENSE file.
+
+// +build ipdr
+
+package xdr
+
+func (w *Writer) WriteUint8(v uint8) (int, error) {
+	if w.err != nil {
+		return 0, w.err
+	}
+
+	if debug {
+		dl.Printf("wr uint8=%d", v)
+	}
+
+	w.b[0] = byte(v)
+
+	var l int
+	l, w.err = w.w.Write(w.b[:1])
+	w.tot += l
+	return l, w.err
+}
+
+func (w *Writer) WriteUint16(v uint16) (int, error) {
+	if w.err != nil {
+		return 0, w.err
+	}
+
+	if debug {
+		dl.Printf("wr uint8=%d", v)
+	}
+
+	w.b[0] = byte(v >> 8)
+	w.b[1] = byte(v)
+
+	var l int
+	l, w.err = w.w.Write(w.b[:2])
+	w.tot += l
+	return l, w.err
+}

Godeps/_workspace/src/github.com/calmh/xdr/writer_xdr.go

@@ -0,0 +1,14 @@
+// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
+// is governed by an MIT-style license that can be found in the LICENSE file.
+
+// +build !ipdr
+
+package xdr
+
+func (w *Writer) WriteUint8(v uint8) (int, error) {
+	return w.WriteUint32(uint32(v))
+}
+
+func (w *Writer) WriteUint16(v uint16) (int, error) {
+	return w.WriteUint32(uint32(v))
+}

Godeps/_workspace/src/github.com/calmh/xdr/xdr_test.go

@@ -1,6 +1,5 @@
-// Copyright (C) 2014 Jakob Borg and other contributors. All rights reserved.
-// Use of this source code is governed by an MIT-style license that can be
-// found in the LICENSE file.
+// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
+// is governed by an MIT-style license that can be found in the LICENSE file.
 
 package xdr
 
@@ -10,23 +9,6 @@ import (
 	"testing/quick"
 )
 
-func TestPad(t *testing.T) {
-	tests := [][]int{
-		{0, 0},
-		{1, 3},
-		{2, 2},
-		{3, 1},
-		{4, 0},
-		{32, 0},
-		{33, 3},
-	}
-	for _, tc := range tests {
-		if p := pad(tc[0]); p != tc[1] {
-			t.Errorf("Incorrect padding for %d bytes, %d != %d", tc[0], p, tc[1])
-		}
-	}
-}
-
 func TestBytesNil(t *testing.T) {
 	fn := func(bs []byte) bool {
 		var b = new(bytes.Buffer)
@@ -85,7 +67,7 @@ func TestReadBytesMaxInto(t *testing.T) {
 	}
 }
 
-func TestReadBytesMaxIntoNil(t *testing.T) {
+func TestReadStringMax(t *testing.T) {
 	for tot := 42; tot < 72; tot++ {
 		for max := 0; max < 128; max++ {
 			var b = new(bytes.Buffer)
@@ -95,8 +77,8 @@ func TestReadBytesMaxIntoNil(t *testing.T) {
 			var toWrite = make([]byte, tot)
 			w.WriteBytes(toWrite)
 
-			var bs = r.ReadBytesMaxInto(max, nil)
-			var read = len(bs)
+			var str = r.ReadStringMax(max)
+			var read = len(str)
 
 			if max == 0 || tot <= max {
 				if read != tot {

Godeps/_workspace/src/github.com/codegangsta/inject/.gitignore

@@ -1,2 +0,0 @@
-inject
-inject.test

Godeps/_workspace/src/github.com/codegangsta/inject/LICENSE

@@ -1,20 +0,0 @@
-The MIT License (MIT)
-
-Copyright (c) 2013 Jeremy Saenz
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Godeps/_workspace/src/github.com/codegangsta/inject/README.md

@@ -1,4 +0,0 @@
-inject
-======
-
-Dependency injection for go

Godeps/_workspace/src/github.com/codegangsta/inject/inject.go

@@ -1,168 +0,0 @@
-// Package inject provides utilities for mapping and injecting dependencies in various ways.
-package inject
-
-import (
-	"fmt"
-	"reflect"
-)
-
-// Injector represents an interface for mapping and injecting dependencies into structs
-// and function arguments.
-type Injector interface {
-	Applicator
-	Invoker
-	TypeMapper
-	// SetParent sets the parent of the injector. If the injector cannot find a
-	// dependency in its Type map it will check its parent before returning an
-	// error.
-	SetParent(Injector)
-}
-
-// Applicator represents an interface for mapping dependencies to a struct.
-type Applicator interface {
-	// Maps dependencies in the Type map to each field in the struct
-	// that is tagged with 'inject'. Returns an error if the injection
-	// fails.
-	Apply(interface{}) error
-}
-
-// Invoker represents an interface for calling functions via reflection.
-type Invoker interface {
-	// Invoke attempts to call the interface{} provided as a function,
-	// providing dependencies for function arguments based on Type. Returns
-	// a slice of reflect.Value representing the returned values of the function.
-	// Returns an error if the injection fails.
-	Invoke(interface{}) ([]reflect.Value, error)
-}
-
-// TypeMapper represents an interface for mapping interface{} values based on type.
-type TypeMapper interface {
-	// Maps the interface{} value based on its immediate type from reflect.TypeOf.
-	Map(interface{}) TypeMapper
-	// Maps the interface{} value based on the pointer of an Interface provided.
-	// This is really only useful for mapping a value as an interface, as interfaces
-	// cannot at this time be referenced directly without a pointer.
-	MapTo(interface{}, interface{}) TypeMapper
-	// Provides a possibility to directly insert a mapping based on type and value.
-	// This makes it possible to directly map type arguments not possible to instantiate
-	// with reflect like unidirectional channels.
-	Set(reflect.Type, reflect.Value) TypeMapper
-	// Returns the Value that is mapped to the current type. Returns a zeroed Value if
-	// the Type has not been mapped.
-	Get(reflect.Type) reflect.Value
-}
-
-type injector struct {
-	values map[reflect.Type]reflect.Value
-	parent Injector
-}
-
-// InterfaceOf dereferences a pointer to an Interface type.
-// It panics if value is not an pointer to an interface.
-func InterfaceOf(value interface{}) reflect.Type {
-	t := reflect.TypeOf(value)
-
-	for t.Kind() == reflect.Ptr {
-		t = t.Elem()
-	}
-
-	if t.Kind() != reflect.Interface {
-		panic("Called inject.InterfaceOf with a value that is not a pointer to an interface. (*MyInterface)(nil)")
-	}
-
-	return t
-}
-
-// New returns a new Injector.
-func New() Injector {
-	return &injector{
-		values: make(map[reflect.Type]reflect.Value),
-	}
-}
-
-// Invoke attempts to call the interface{} provided as a function,
-// providing dependencies for function arguments based on Type.
-// Returns a slice of reflect.Value representing the returned values of the function.
-// Returns an error if the injection fails.
-// It panics if f is not a function
-func (inj *injector) Invoke(f interface{}) ([]reflect.Value, error) {
-	t := reflect.TypeOf(f)
-
-	var in = make([]reflect.Value, t.NumIn()) //Panic if t is not kind of Func
-	for i := 0; i < t.NumIn(); i++ {
-		argType := t.In(i)
-		val := inj.Get(argType)
-		if !val.IsValid() {
-			return nil, fmt.Errorf("Value not found for type %v", argType)
-		}
-
-		in[i] = val
-	}
-
-	return reflect.ValueOf(f).Call(in), nil
-}
-
-// Maps dependencies in the Type map to each field in the struct
-// that is tagged with 'inject'.
-// Returns an error if the injection fails.
-func (inj *injector) Apply(val interface{}) error {
-	v := reflect.ValueOf(val)
-
-	for v.Kind() == reflect.Ptr {
-		v = v.Elem()
-	}
-
-	if v.Kind() != reflect.Struct {
-		return nil // Should not panic here ?
-	}
-
-	t := v.Type()
-
-	for i := 0; i < v.NumField(); i++ {
-		f := v.Field(i)
-		structField := t.Field(i)
-		if f.CanSet() && structField.Tag == "inject" {
-			ft := f.Type()
-			v := inj.Get(ft)
-			if !v.IsValid() {
-				return fmt.Errorf("Value not found for type %v", ft)
-			}
-
-			f.Set(v)
-		}
-
-	}
-
-	return nil
-}
-
-// Maps the concrete value of val to its dynamic type using reflect.TypeOf,
-// It returns the TypeMapper registered in.
-func (i *injector) Map(val interface{}) TypeMapper {
-	i.values[reflect.TypeOf(val)] = reflect.ValueOf(val)
-	return i
-}
-
-func (i *injector) MapTo(val interface{}, ifacePtr interface{}) TypeMapper {
-	i.values[InterfaceOf(ifacePtr)] = reflect.ValueOf(val)
-	return i
-}
-
-// Maps the given reflect.Type to the given reflect.Value and returns
-// the Typemapper the mapping has been registered in.
-func (i *injector) Set(typ reflect.Type, val reflect.Value) TypeMapper {
-	i.values[typ] = val
-	return i
-}
-
-func (i *injector) Get(t reflect.Type) reflect.Value {
-	val := i.values[t]
-	if !val.IsValid() && i.parent != nil {
-		val = i.parent.Get(t)
-	}
-	return val
-}
-
-func (i *injector) SetParent(parent Injector) {
-	i.parent = parent
-}

Godeps/_workspace/src/github.com/codegangsta/inject/inject_test.go

@@ -1,142 +0,0 @@
-package inject_test
-
-import (
-	"github.com/codegangsta/inject"
-	"reflect"
-	"testing"
-)
-
-type SpecialString interface {
-}
-
-type TestStruct struct {
-	Dep1 string        `inject`
-	Dep2 SpecialString `inject`
-	Dep3 string
-}
-
-/* Test Helpers */
-func expect(t *testing.T, a interface{}, b interface{}) {
-	if a != b {
-		t.Errorf("Expected %v (type %v) - Got %v (type %v)", b, reflect.TypeOf(b), a, reflect.TypeOf(a))
-	}
-}
-
-func refute(t *testing.T, a interface{}, b interface{}) {
-	if a == b {
-		t.Errorf("Did not expect %v (type %v) - Got %v (type %v)", b, reflect.TypeOf(b), a, reflect.TypeOf(a))
-	}
-}
-
-func Test_InjectorInvoke(t *testing.T) {
-	injector := inject.New()
-	expect(t, injector == nil, false)
-
-	dep := "some dependency"
-	injector.Map(dep)
-	dep2 := "another dep"
-	injector.MapTo(dep2, (*SpecialString)(nil))
-	dep3 := make(chan *SpecialString)
-	dep4 := make(chan *SpecialString)
-	typRecv := reflect.ChanOf(reflect.RecvDir, reflect.TypeOf(dep3).Elem())
-	typSend := reflect.ChanOf(reflect.SendDir, reflect.TypeOf(dep4).Elem())
-	injector.Set(typRecv, reflect.ValueOf(dep3))
-	injector.Set(typSend, reflect.ValueOf(dep4))
-	
-	_, err := injector.Invoke(func(d1 string, d2 SpecialString, d3 <-chan *SpecialString, d4 chan<- *SpecialString) {
-		expect(t, d1, dep)
-		expect(t, d2, dep2)
-		expect(t, reflect.TypeOf(d3).Elem(), reflect.TypeOf(dep3).Elem())
-		expect(t, reflect.TypeOf(d4).Elem(), reflect.TypeOf(dep4).Elem())
-		expect(t, reflect.TypeOf(d3).ChanDir(), reflect.RecvDir)
-		expect(t, reflect.TypeOf(d4).ChanDir(), reflect.SendDir)
-	})
-
-	expect(t, err, nil)
-}
-
-func Test_InjectorInvokeReturnValues(t *testing.T) {
-	injector := inject.New()
-	expect(t, injector == nil, false)
-
-	dep := "some dependency"
-	injector.Map(dep)
-	dep2 := "another dep"
-	injector.MapTo(dep2, (*SpecialString)(nil))
-
-	result, err := injector.Invoke(func(d1 string, d2 SpecialString) string {
-		expect(t, d1, dep)
-		expect(t, d2, dep2)
-		return "Hello world"
-	})
-
-	expect(t, result[0].String(), "Hello world")
-	expect(t, err, nil)
-}
-
-func Test_InjectorApply(t *testing.T) {
-	injector := inject.New()
-
-	injector.Map("a dep").MapTo("another dep", (*SpecialString)(nil))
-
-	s := TestStruct{}
-	err := injector.Apply(&s)
-	expect(t, err, nil)
-
-	expect(t, s.Dep1, "a dep")
-	expect(t, s.Dep2, "another dep")
-}
-
-func Test_InterfaceOf(t *testing.T) {
-	iType := inject.InterfaceOf((*SpecialString)(nil))
-	expect(t, iType.Kind(), reflect.Interface)
-
-	iType = inject.InterfaceOf((**SpecialString)(nil))
-	expect(t, iType.Kind(), reflect.Interface)
-
-	// Expecting nil
-	defer func() {
-		rec := recover()
-		refute(t, rec, nil)
-	}()
-	iType = inject.InterfaceOf((*testing.T)(nil))
-}
-
-func Test_InjectorSet(t *testing.T) {
-	injector := inject.New()
-	typ      := reflect.TypeOf("string")
-	typSend  := reflect.ChanOf(reflect.SendDir, typ)
-	typRecv  := reflect.ChanOf(reflect.RecvDir, typ)
-	
-	// instantiating unidirectional channels is not possible using reflect
-	// http://golang.org/src/pkg/reflect/value.go?s=60463:60504#L2064
-	chanRecv := reflect.MakeChan(reflect.ChanOf(reflect.BothDir, typ), 0)
-	chanSend := reflect.MakeChan(reflect.ChanOf(reflect.BothDir, typ), 0)
-	
-	injector.Set(typSend, chanSend)
-	injector.Set(typRecv, chanRecv)
-
-	expect(t, injector.Get(typSend).IsValid(), true)
-	expect(t, injector.Get(typRecv).IsValid(), true)
-	expect(t, injector.Get(chanSend.Type()).IsValid(), false)
-}
-
-
-func Test_InjectorGet(t *testing.T) {
-	injector := inject.New()
-
-	injector.Map("some dependency")
-
-	expect(t, injector.Get(reflect.TypeOf("string")).IsValid(), true)
-	expect(t, injector.Get(reflect.TypeOf(11)).IsValid(), false)
-}
-
-func Test_InjectorSetParent(t *testing.T) {
-	injector := inject.New()
-	injector.MapTo("another dep", (*SpecialString)(nil))
-
-	injector2 := inject.New()
-	injector2.SetParent(injector)
-
-	expect(t, injector2.Get(inject.InterfaceOf((*SpecialString)(nil))).IsValid(), true)
-}

Godeps/_workspace/src/github.com/codegangsta/martini/.gitignore

@@ -1,23 +0,0 @@
-# Compiled Object files, Static and Dynamic libs (Shared Objects)
-*.o
-*.a
-*.so
-
-# Folders
-_obj
-_test
-
-# Architecture specific extensions/prefixes
-*.[568vq]
-[568vq].out
-
-*.cgo1.go
-*.cgo2.c
-_cgo_defun.c
-_cgo_gotypes.go
-_cgo_export.*
-
-_testmain.go
-
-*.exe
-*.test

Godeps/_workspace/src/github.com/codegangsta/martini/LICENSE

@@ -1,20 +0,0 @@
-The MIT License (MIT)
-
-Copyright (c) 2013 Jeremy Saenz
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Godeps/_workspace/src/github.com/codegangsta/martini/README.md

@@ -1,345 +0,0 @@
-# Martini  [![wercker status](https://app.wercker.com/status/174bef7e3c999e103cacfe2770102266 "wercker status")](https://app.wercker.com/project/bykey/174bef7e3c999e103cacfe2770102266) [![GoDoc](https://godoc.org/github.com/codegangsta/martini?status.png)](http://godoc.org/github.com/codegangsta/martini)
-
-Martini is a powerful package for quickly writing modular web applications/services in Golang.
-
-Language Translations: [Simplified Chinese (zh_CN)](translations/README_zh_cn.md)
-
-
-## Getting Started
-
-After installing Go and setting up your [GOPATH](http://golang.org/doc/code.html#GOPATH), create your first `.go` file. We'll call it `server.go`.
-
-~~~ go
-package main
-
-import "github.com/codegangsta/martini"
-
-func main() {
-  m := martini.Classic()
-  m.Get("/", func() string {
-    return "Hello world!"
-  })
-  m.Run()
-}
-~~~
-
-Then install the Martini package (**go 1.1** and greater is required):
-~~~
-go get github.com/codegangsta/martini
-~~~
-
-Then run your server:
-~~~
-go run server.go
-~~~
-
-You will now have a Martini webserver running on `localhost:3000`.
-
-## Getting Help
-
-Join the [Mailing list](https://groups.google.com/forum/#!forum/martini-go)
-
-Watch the [Demo Video](http://martini.codegangsta.io/#demo)
-
-## Features
-* Extremely simple to use.
-* Non-intrusive design.
-* Plays nice with other Golang packages.
-* Awesome path matching and routing.
-* Modular design - Easy to add functionality, easy to rip stuff out.
-* Lots of good handlers/middlewares to use.
-* Great 'out of the box' feature set.
-* **Fully compatible with the [http.HandlerFunc](http://godoc.org/net/http#HandlerFunc) interface.**
-
-## More Middleware
-For more middleware and functionality, check out the repositories in the  [martini-contrib](https://github.com/martini-contrib) organization.
-
-## Table of Contents
-* [Classic Martini](#classic-martini)
-  * [Handlers](#handlers)
-  * [Routing](#routing)
-  * [Services](#services)
-  * [Serving Static Files](#serving-static-files)
-* [Middleware Handlers](#middleware-handlers)
-  * [Next()](#next)
-* [Martini Env](#martini-env)
-* [FAQ](#faq)
-
-## Classic Martini
-To get up and running quickly, [martini.Classic()](http://godoc.org/github.com/codegangsta/martini#Classic) provides some reasonable defaults that work well for most web applications:
-~~~ go
-  m := martini.Classic()
-  // ... middleware and routing goes here
-  m.Run()
-~~~
-
-Below is some of the functionality [martini.Classic()](http://godoc.org/github.com/codegangsta/martini#Classic) pulls in automatically:
-  * Request/Response Logging - [martini.Logger](http://godoc.org/github.com/codegangsta/martini#Logger)
-  * Panic Recovery - [martini.Recovery](http://godoc.org/github.com/codegangsta/martini#Recovery)
-  * Static File serving - [martini.Static](http://godoc.org/github.com/codegangsta/martini#Static)
-  * Routing - [martini.Router](http://godoc.org/github.com/codegangsta/martini#Router)
-
-### Handlers
-Handlers are the heart and soul of Martini. A handler is basically any kind of callable function:
-~~~ go
-m.Get("/", func() {
-  println("hello world")
-})
-~~~
-
-#### Return Values
-If a handler returns something, Martini will write the result to the current [http.ResponseWriter](http://godoc.org/net/http#ResponseWriter) as a string:
-~~~ go
-m.Get("/", func() string {
-  return "hello world" // HTTP 200 : "hello world"
-})
-~~~
-
-You can also optionally return a status code:
-~~~ go
-m.Get("/", func() (int, string) {
-  return 418, "i'm a teapot" // HTTP 418 : "i'm a teapot"
-})
-~~~
-
-#### Service Injection
-Handlers are invoked via reflection. Martini makes use of *Dependency Injection* to resolve dependencies in a Handlers argument list. **This makes Martini completely  compatible with golang's `http.HandlerFunc` interface.** 
-
-If you add an argument to your Handler, Martini will search its list of services and attempt to resolve the dependency via type assertion:
-~~~ go
-m.Get("/", func(res http.ResponseWriter, req *http.Request) { // res and req are injected by Martini
-  res.WriteHeader(200) // HTTP 200
-})
-~~~
-
-The following services are included with [martini.Classic()](http://godoc.org/github.com/codegangsta/martini#Classic):
-  * [*log.Logger](http://godoc.org/log#Logger) - Global logger for Martini.
-  * [martini.Context](http://godoc.org/github.com/codegangsta/martini#Context) - http request context.
-  * [martini.Params](http://godoc.org/github.com/codegangsta/martini#Params) - `map[string]string` of named params found by route matching.
-  * [martini.Routes](http://godoc.org/github.com/codegangsta/martini#Routes) - Route helper service.
-  * [http.ResponseWriter](http://godoc.org/net/http/#ResponseWriter) - http Response writer interface.
-  * [*http.Request](http://godoc.org/net/http/#Request) - http Request.
-
-### Routing
-In Martini, a route is an HTTP method paired with a URL-matching pattern.
-Each route can take one or more handler methods:
-~~~ go
-m.Get("/", func() {
-  // show something
-})
-
-m.Patch("/", func() {
-  // update something
-})
-
-m.Post("/", func() {
-  // create something
-})
-
-m.Put("/", func() {
-  // replace something
-})
-
-m.Delete("/", func() {
-  // destroy something
-})
-
-m.Options("/", func() {
-  // http options
-})
-
-m.NotFound(func() {
-  // handle 404
-})
-~~~
-
-Routes are matched in the order they are defined. The first route that
-matches the request is invoked.
-
-Route patterns may include named parameters, accessible via the [martini.Params](http://godoc.org/github.com/codegangsta/martini#Params) service:
-~~~ go
-m.Get("/hello/:name", func(params martini.Params) string {
-  return "Hello " + params["name"]
-})
-~~~
-
-Routes can be matched with regular expressions and globs as well:
-~~~ go
-m.Get("/hello/**", func(params martini.Params) string {
-  return "Hello " + params["_1"]
-})
-~~~
-
-Route handlers can be stacked on top of each other, which is useful for things like authentication and authorization:
-~~~ go
-m.Get("/secret", authorize, func() {
-  // this will execute as long as authorize doesn't write a response
-})
-~~~
-
-Route groups can be added too using the Group method.
-~~~ go
-m.Group("/books", func(r Router) {
-    r.Get("/:id", GetBooks)
-    r.Post("/new", NewBook)
-    r.Put("/update/:id", UpdateBook)
-    r.Delete("/delete/:id", DeleteBook)
-})
-~~~
-
-Just like you can pass middlewares to a handler you can pass middlewares to groups.
-~~~ go
-m.Group("/books", func(r Router) {
-    r.Get("/:id", GetBooks)
-    r.Post("/new", NewBook)
-    r.Put("/update/:id", UpdateBook)
-    r.Delete("/delete/:id", DeleteBook)
-}, MyMiddleware1, MyMiddleware2)
-~~~
-
-### Services
-Services are objects that are available to be injected into a Handler's argument list. You can map a service on a *Global* or *Request* level.
-
-#### Global Mapping
-A Martini instance implements the inject.Injector interface, so mapping a service is easy:
-~~~ go
-db := &MyDatabase{}
-m := martini.Classic()
-m.Map(db) // the service will be available to all handlers as *MyDatabase
-// ...
-m.Run()
-~~~
-
-#### Request-Level Mapping
-Mapping on the request level can be done in a handler via [martini.Context](http://godoc.org/github.com/codegangsta/martini#Context):
-~~~ go
-func MyCustomLoggerHandler(c martini.Context, req *http.Request) {
-  logger := &MyCustomLogger{req}
-  c.Map(logger) // mapped as *MyCustomLogger
-}
-~~~
-
-#### Mapping values to Interfaces
-One of the most powerful parts about services is the ability to map a service to an interface. For instance, if you wanted to override the [http.ResponseWriter](http://godoc.org/net/http#ResponseWriter) with an object that wrapped it and performed extra operations, you can write the following handler:
-~~~ go
-func WrapResponseWriter(res http.ResponseWriter, c martini.Context) {
-  rw := NewSpecialResponseWriter(res)
-  c.MapTo(rw, (*http.ResponseWriter)(nil)) // override ResponseWriter with our wrapper ResponseWriter
-}
-~~~
-
-### Serving Static Files
-A [martini.Classic()](http://godoc.org/github.com/codegangsta/martini#Classic) instance automatically serves static files from the "public" directory in the root of your server.
-You can serve from more directories by adding more [martini.Static](http://godoc.org/github.com/codegangsta/martini#Static) handlers.
-~~~ go
-m.Use(martini.Static("assets")) // serve from the "assets" directory as well
-~~~
-
-## Middleware Handlers
-Middleware Handlers sit between the incoming http request and the router. In essence they are no different than any other Handler in Martini. You can add a middleware handler to the stack like so:
-~~~ go
-m.Use(func() {
-  // do some middleware stuff
-})
-~~~
-
-You can have full control over the middleware stack with the `Handlers` function. This will replace any handlers that have been previously set:
-~~~ go
-m.Handlers(
-  Middleware1,
-  Middleware2,
-  Middleware3,
-)
-~~~
-
-Middleware Handlers work really well for things like logging, authorization, authentication, sessions, gzipping, error pages and any other operations that must happen before or after an http request:
-~~~ go
-// validate an api key
-m.Use(func(res http.ResponseWriter, req *http.Request) {
-  if req.Header.Get("X-API-KEY") != "secret123" {
-    res.WriteHeader(http.StatusUnauthorized)
-  }
-})
-~~~
-
-### Next()
-[Context.Next()](http://godoc.org/github.com/codegangsta/martini#Context) is an optional function that Middleware Handlers can call to yield the until after the other Handlers have been executed. This works really well for any operations that must happen after an http request:
-~~~ go
-// log before and after a request
-m.Use(func(c martini.Context, log *log.Logger){
-  log.Println("before a request")
-
-  c.Next()
-  
-  log.Println("after a request")
-})
-~~~
-
-## Martini Env
-
-Some Martini handlers make use of the `martini.Env` global variable to provide special functionality for development environments vs production environments. It is reccomended that the `MARTINI_ENV=production` environment variable to be set when deploying a Martini server into a production environment.
-
-## FAQ
-
-### Where do I find middleware X?
-
-Start by looking in the [martini-contrib](https://github.com/martini-contrib) projects. If it is not there feel free to contact a martini-contrib team member about adding a new repo to the organization.
-
-* [auth](https://github.com/martini-contrib/auth) - Handlers for authentication.
-* [binding](https://github.com/martini-contrib/binding) - Handler for mapping/validating a raw request into a structure.
-* [gzip](https://github.com/martini-contrib/gzip) - Handler for adding gzip compress to requests
-* [render](https://github.com/martini-contrib/render) - Handler that provides a service for easily rendering JSON and HTML templates.
-* [acceptlang](https://github.com/martini-contrib/acceptlang) - Handler for parsing the `Accept-Language` HTTP header.
-* [sessions](https://github.com/martini-contrib/sessions) - Handler that provides a Session service.
-* [strip](https://github.com/martini-contrib/strip) - URL Prefix stripping.
-* [method](https://github.com/martini-contrib/method) - HTTP method overriding via Header or form fields.
-* [secure](https://github.com/martini-contrib/secure) - Implements a few quick security wins.
-* [encoder](https://github.com/martini-contrib/encoder) - Encoder service for rendering data in several formats and content negotiation.
-* [cors](https://github.com/martini-contrib/cors) - Handler that enables CORS support.
-* [oauth2](https://github.com/martini-contrib/oauth2) - Handler that provides OAuth 2.0 login for Martini apps. Google Sign-in, Facebook Connect and Github login is supported.
-
-### How do I integrate with existing servers?
-
-A Martini instance implements `http.Handler`, so it can easily be used to serve subtrees 
-on existing Go servers. For example this is a working Martini app for Google App Engine:
-
-~~~ go
-package hello
-
-import (
-  "net/http"
-  "github.com/codegangsta/martini"
-)
-
-func init() {
-  m := martini.Classic()
-  m.Get("/", func() string {
-    return "Hello world!"
-  })
-  http.Handle("/", m)
-}
-~~~
-
-### How do I change the port/host?
-
-Martini's `Run` function looks for the PORT and HOST environment variables and uses those. Otherwise Martini will default to localhost:3000.
-To have more flexibility over port and host, use the `http.ListenAndServe` function instead.
-
-~~~ go
-  m := martini.Classic()
-  // ...
-  log.Fatal(http.ListenAndServe(":8080", m))
-~~~
-
-### Live code reload?
-
-[gin](https://github.com/codegangsta/gin) and [fresh](https://github.com/pilu/fresh) both live reload martini apps.
-
-## Contributing
-Martini is meant to be kept tiny and clean. Most contributions should end up in a repository in the [martini-contrib](https://github.com/martini-contrib) organization. If you do have a contribution for the core of Martini feel free to put up a Pull Request.
-
-## About
-
-Inspired by [express](https://github.com/visionmedia/express) and [sinatra](https://github.com/sinatra/sinatra)
-
-Martini is obsessively designed by none other than the [Code Gangsta](http://codegangsta.io/)

Godeps/_workspace/src/github.com/codegangsta/martini/env.go

@@ -1,25 +0,0 @@
-package martini
-
-import (
-	"os"
-)
-
-// Envs
-const (
-	Dev  string = "development"
-	Prod string = "production"
-	Test string = "test"
-)
-
-// Env is the environment that Martini is executing in. The MARTINI_ENV is read on initialization to set this variable.
-var Env = Dev
-
-func setENV(e string) {
-	if len(e) > 0 {
-		Env = e
-	}
-}
-
-func init() {
-	setENV(os.Getenv("MARTINI_ENV"))
-}

Godeps/_workspace/src/github.com/codegangsta/martini/env_test.go

@@ -1,22 +0,0 @@
-package martini
-
-import (
-	"testing"
-)
-
-func Test_SetENV(t *testing.T) {
-	tests := []struct {
-		in  string
-		out string
-	}{
-		{"", "development"},
-		{"not_development", "not_development"},
-	}
-
-	for _, test := range tests {
-		setENV(test.in)
-		if Env != test.out {
-			expect(t, Env, test.out)
-		}
-	}
-}

Godeps/_workspace/src/github.com/codegangsta/martini/go_version.go

@@ -1,7 +0,0 @@
-// +build !go1.1
-
-package martini
-
-func MartiniDoesNotSupportGo1Point0() {
-	"Martini requires Go 1.1 or greater."
-}

Godeps/_workspace/src/github.com/codegangsta/martini/logger.go

@@ -1,20 +0,0 @@
-package martini
-
-import (
-	"log"
-	"net/http"
-	"time"
-)
-
-// Logger returns a middleware handler that logs the request as it goes in and the response as it goes out.
-func Logger() Handler {
-	return func(res http.ResponseWriter, req *http.Request, c Context, log *log.Logger) {
-		start := time.Now()
-		log.Printf("Started %s %s", req.Method, req.URL.Path)
-
-		rw := res.(ResponseWriter)
-		c.Next()
-
-		log.Printf("Completed %v %s in %v\n", rw.Status(), http.StatusText(rw.Status()), time.Since(start))
-	}
-}

Godeps/_workspace/src/github.com/codegangsta/martini/logger_test.go

@@ -1,31 +0,0 @@
-package martini
-
-import (
-	"bytes"
-	"log"
-	"net/http"
-	"net/http/httptest"
-	"testing"
-)
-
-func Test_Logger(t *testing.T) {
-	buff := bytes.NewBufferString("")
-	recorder := httptest.NewRecorder()
-
-	m := New()
-	// replace log for testing
-	m.Map(log.New(buff, "[martini] ", 0))
-	m.Use(Logger())
-	m.Use(func(res http.ResponseWriter) {
-		res.WriteHeader(http.StatusNotFound)
-	})
-
-	req, err := http.NewRequest("GET", "http://localhost:3000/foobar", nil)
-	if err != nil {
-		t.Error(err)
-	}
-
-	m.ServeHTTP(recorder, req)
-	expect(t, recorder.Code, http.StatusNotFound)
-	refute(t, len(buff.String()), 0)
-}

Godeps/_workspace/src/github.com/codegangsta/martini/martini.go

@@ -1,173 +0,0 @@
-// Package martini is a powerful package for quickly writing modular web applications/services in Golang.
-//
-// For a full guide visit http://github.com/codegangsta/martini
-//
-//  package main
-//
-//  import "github.com/codegangsta/martini"
-//
-//  func main() {
-//    m := martini.Classic()
-//
-//    m.Get("/", func() string {
-//      return "Hello world!"
-//    })
-//
-//    m.Run()
-//  }
-package martini
-
-import (
-	"log"
-	"net/http"
-	"os"
-	"reflect"
-
-	"github.com/codegangsta/inject"
-)
-
-// Martini represents the top level web application. inject.Injector methods can be invoked to map services on a global level.
-type Martini struct {
-	inject.Injector
-	handlers []Handler
-	action   Handler
-	logger   *log.Logger
-}
-
-// New creates a bare bones Martini instance. Use this method if you want to have full control over the middleware that is used.
-func New() *Martini {
-	m := &Martini{Injector: inject.New(), action: func() {}, logger: log.New(os.Stdout, "[martini] ", 0)}
-	m.Map(m.logger)
-	m.Map(defaultReturnHandler())
-	return m
-}
-
-// Handlers sets the entire middleware stack with the given Handlers. This will clear any current middleware handlers.
-// Will panic if any of the handlers is not a callable function
-func (m *Martini) Handlers(handlers ...Handler) {
-	m.handlers = make([]Handler, 0)
-	for _, handler := range handlers {
-		m.Use(handler)
-	}
-}
-
-// Action sets the handler that will be called after all the middleware has been invoked. This is set to martini.Router in a martini.Classic().
-func (m *Martini) Action(handler Handler) {
-	validateHandler(handler)
-	m.action = handler
-}
-
-// Use adds a middleware Handler to the stack. Will panic if the handler is not a callable func. Middleware Handlers are invoked in the order that they are added.
-func (m *Martini) Use(handler Handler) {
-	validateHandler(handler)
-
-	m.handlers = append(m.handlers, handler)
-}
-
-// ServeHTTP is the HTTP Entry point for a Martini instance. Useful if you want to control your own HTTP server.
-func (m *Martini) ServeHTTP(res http.ResponseWriter, req *http.Request) {
-	m.createContext(res, req).run()
-}
-
-// Run the http server. Listening on os.GetEnv("PORT") or 3000 by default.
-func (m *Martini) Run() {
-	port := os.Getenv("PORT")
-	if port == "" {
-		port = "3000"
-	}
-
-	host := os.Getenv("HOST")
-
-	m.logger.Println("listening on " + host + ":" + port)
-	m.logger.Fatalln(http.ListenAndServe(host+":"+port, m))
-}
-
-func (m *Martini) createContext(res http.ResponseWriter, req *http.Request) *context {
-	c := &context{inject.New(), m.handlers, m.action, NewResponseWriter(res), 0}
-	c.SetParent(m)
-	c.MapTo(c, (*Context)(nil))
-	c.MapTo(c.rw, (*http.ResponseWriter)(nil))
-	c.Map(req)
-	return c
-}
-
-// ClassicMartini represents a Martini with some reasonable defaults. Embeds the router functions for convenience.
-type ClassicMartini struct {
-	*Martini
-	Router
-}
-
-// Classic creates a classic Martini with some basic default middleware - martini.Logger, martini.Recovery and martini.Static.
-// Classic also maps martini.Routes as a service.
-func Classic() *ClassicMartini {
-	r := NewRouter()
-	m := New()
-	m.Use(Logger())
-	m.Use(Recovery())
-	m.Use(Static("public"))
-	m.MapTo(r, (*Routes)(nil))
-	m.Action(r.Handle)
-	return &ClassicMartini{m, r}
-}
-
-// Handler can be any callable function. Martini attempts to inject services into the handler's argument list.
-// Martini will panic if an argument could not be fullfilled via dependency injection.
-type Handler interface{}
-
-func validateHandler(handler Handler) {
-	if reflect.TypeOf(handler).Kind() != reflect.Func {
-		panic("martini handler must be a callable func")
-	}
-}
-
-// Context represents a request context. Services can be mapped on the request level from this interface.
-type Context interface {
-	inject.Injector
-	// Next is an optional function that Middleware Handlers can call to yield the until after
-	// the other Handlers have been executed. This works really well for any operations that must
-	// happen after an http request
-	Next()
-	// Written returns whether or not the response for this context has been written.
-	Written() bool
-}
-
-type context struct {
-	inject.Injector
-	handlers []Handler
-	action   Handler
-	rw       ResponseWriter
-	index    int
-}
-
-func (c *context) handler() Handler {
-	if c.index < len(c.handlers) {
-		return c.handlers[c.index]
-	}
-	if c.index == len(c.handlers) {
-		return c.action
-	}
-	panic("invalid index for context handler")
-}
-
-func (c *context) Next() {
-	c.index += 1
-	c.run()
-}
-
-func (c *context) Written() bool {
-	return c.rw.Written()
-}
-
-func (c *context) run() {
-	for c.index <= len(c.handlers) {
-		_, err := c.Invoke(c.handler())
-		if err != nil {
-			panic(err)
-		}
-		c.index += 1
-
-		if c.Written() {
-			return
-		}
-	}
-}

Godeps/_workspace/src/github.com/codegangsta/martini/martini_test.go

@@ -1,141 +0,0 @@
-package martini
-
-import (
-	"net/http"
-	"net/http/httptest"
-	"reflect"
-	"testing"
-)
-
-/* Test Helpers */
-func expect(t *testing.T, a interface{}, b interface{}) {
-	if a != b {
-		t.Errorf("Expected %v (type %v) - Got %v (type %v)", b, reflect.TypeOf(b), a, reflect.TypeOf(a))
-	}
-}
-
-func refute(t *testing.T, a interface{}, b interface{}) {
-	if a == b {
-		t.Errorf("Did not expect %v (type %v) - Got %v (type %v)", b, reflect.TypeOf(b), a, reflect.TypeOf(a))
-	}
-}
-
-func Test_New(t *testing.T) {
-	m := New()
-	if m == nil {
-		t.Error("martini.New() cannot return nil")
-	}
-}
-
-func Test_Martini_Run(t *testing.T) {
-	// just test that Run doesn't bomb
-	go New().Run()
-}
-
-func Test_Martini_ServeHTTP(t *testing.T) {
-	result := ""
-	response := httptest.NewRecorder()
-
-	m := New()
-	m.Use(func(c Context) {
-		result += "foo"
-		c.Next()
-		result += "ban"
-	})
-	m.Use(func(c Context) {
-		result += "bar"
-		c.Next()
-		result += "baz"
-	})
-	m.Action(func(res http.ResponseWriter, req *http.Request) {
-		result += "bat"
-		res.WriteHeader(http.StatusBadRequest)
-	})
-
-	m.ServeHTTP(response, (*http.Request)(nil))
-
-	expect(t, result, "foobarbatbazban")
-	expect(t, response.Code, http.StatusBadRequest)
-}
-
-func Test_Martini_Handlers(t *testing.T) {
-	result := ""
-	response := httptest.NewRecorder()
-
-	batman := func(c Context) {
-		result += "batman!"
-	}
-
-	m := New()
-	m.Use(func(c Context) {
-		result += "foo"
-		c.Next()
-		result += "ban"
-	})
-	m.Handlers(
-		batman,
-		batman,
-		batman,
-	)
-	m.Action(func(res http.ResponseWriter, req *http.Request) {
-		result += "bat"
-		res.WriteHeader(http.StatusBadRequest)
-	})
-
-	m.ServeHTTP(response, (*http.Request)(nil))
-
-	expect(t, result, "batman!batman!batman!bat")
-	expect(t, response.Code, http.StatusBadRequest)
-}
-
-func Test_Martini_EarlyWrite(t *testing.T) {
-	result := ""
-	response := httptest.NewRecorder()
-
-	m := New()
-	m.Use(func(res http.ResponseWriter) {
-		result += "foobar"
-		res.Write([]byte("Hello world"))
-	})
-	m.Use(func() {
-		result += "bat"
-	})
-	m.Action(func(res http.ResponseWriter) {
-		result += "baz"
-		res.WriteHeader(http.StatusBadRequest)
-	})
-
-	m.ServeHTTP(response, (*http.Request)(nil))
-
-	expect(t, result, "foobar")
-	expect(t, response.Code, http.StatusOK)
-}
-
-func Test_Martini_Written(t *testing.T) {
-	response := httptest.NewRecorder()
-
-	m := New()
-	m.Handlers(func(res http.ResponseWriter) {
-		res.WriteHeader(http.StatusOK)
-	})
-
-	ctx := m.createContext(response, (*http.Request)(nil))
-	expect(t, ctx.Written(), false)
-
-	ctx.run()
-	expect(t, ctx.Written(), true)
-}
-
-func Test_Martini_Basic_NoRace(t *testing.T) {
-	m := New()
-	handlers := []Handler{func() {}, func() {}}
-	// Ensure append will not realloc to trigger the race condition
-	m.handlers = handlers[:1]
-	req, _ := http.NewRequest("GET", "/", nil)
-	for i := 0; i < 2; i++ {
-		go func() {
-			response := httptest.NewRecorder()
-			m.ServeHTTP(response, req)
-		}()
-	}
-}

Godeps/_workspace/src/github.com/codegangsta/martini/recovery.go

@@ -1,142 +0,0 @@
-package martini
-
-import (
-	"bytes"
-	"fmt"
-	"io/ioutil"
-	"log"
-	"net/http"
-	"runtime"
-
-	"github.com/codegangsta/inject"
-)
-
-const (
-	panicHtml = `<html>
-<head><title>PANIC: %s</title>
-<style type="text/css">
-html, body {
-	font-family: "Roboto", sans-serif;
-	color: #333333;
-	background-color: #ea5343;
-	margin: 0px;
-}
-h1 {
-	color: #d04526;
-	background-color: #ffffff;
-	padding: 20px;
-	border-bottom: 1px dashed #2b3848;
-}
-pre {
-	margin: 20px;
-	padding: 20px;
-	border: 2px solid #2b3848;
-	background-color: #ffffff;
-}
-</style>
-</head><body>
-<h1>PANIC</h1>
-<pre style="font-weight: bold;">%s</pre>
-<pre>%s</pre>
-</body>
-</html>`
-)
-
-var (
-	dunno     = []byte("???")
-	centerDot = []byte("·")
-	dot       = []byte(".")
-	slash     = []byte("/")
-)
-
-// stack returns a nicely formated stack frame, skipping skip frames
-func stack(skip int) []byte {
-	buf := new(bytes.Buffer) // the returned data
-	// As we loop, we open files and read them. These variables record the currently
-	// loaded file.
-	var lines [][]byte
-	var lastFile string
-	for i := skip; ; i++ { // Skip the expected number of frames
-		pc, file, line, ok := runtime.Caller(i)
-		if !ok {
-			break
-		}
-		// Print this much at least.  If we can't find the source, it won't show.
-		fmt.Fprintf(buf, "%s:%d (0x%x)\n", file, line, pc)
-		if file != lastFile {
-			data, err := ioutil.ReadFile(file)
-			if err != nil {
-				continue
-			}
-			lines = bytes.Split(data, []byte{'\n'})
-			lastFile = file
-		}
-		fmt.Fprintf(buf, "\t%s: %s\n", function(pc), source(lines, line))
-	}
-	return buf.Bytes()
-}
-
-// source returns a space-trimmed slice of the n'th line.
-func source(lines [][]byte, n int) []byte {
-	n-- // in stack trace, lines are 1-indexed but our array is 0-indexed
-	if n < 0 || n >= len(lines) {
-		return dunno
-	}
-	return bytes.TrimSpace(lines[n])
-}
-
-// function returns, if possible, the name of the function containing the PC.
-func function(pc uintptr) []byte {
-	fn := runtime.FuncForPC(pc)
-	if fn == nil {
-		return dunno
-	}
-	name := []byte(fn.Name())
-	// The name includes the path name to the package, which is unnecessary
-	// since the file name is already included.  Plus, it has center dots.
-	// That is, we see
-	//	runtime/debug.*T·ptrmethod
-	// and want
-	//	*T.ptrmethod
-	// Also the package path might contains dot (e.g. code.google.com/...),
-	// so first eliminate the path prefix
-	if lastslash := bytes.LastIndex(name, slash); lastslash >= 0 {
-		name = name[lastslash+1:]
-	}
-	if period := bytes.Index(name, dot); period >= 0 {
-		name = name[period+1:]
-	}
-	name = bytes.Replace(name, centerDot, dot, -1)
-	return name
-}
-
-// Recovery returns a middleware that recovers from any panics and writes a 500 if there was one.
-// While Martini is in development mode, Recovery will also output the panic as HTML.
-func Recovery() Handler {
-	return func(c Context, log *log.Logger) {
-		defer func() {
-			if err := recover(); err != nil {
-				stack := stack(3)
-				log.Printf("PANIC: %s\n%s", err, stack)
-
-				// Lookup the current responsewriter
-				val := c.Get(inject.InterfaceOf((*http.ResponseWriter)(nil)))
-				res := val.Interface().(http.ResponseWriter)
-
-				// respond with panic message while in development mode
-				var body []byte
-				if Env == Dev {
-					res.Header().Set("Content-Type", "text/html")
-					body = []byte(fmt.Sprintf(panicHtml, err, err, stack))
-				}
-
-				res.WriteHeader(http.StatusInternalServerError)
-				if nil != body {
-					res.Write(body)
-				}
-			}
-		}()
-
-		c.Next()
-	}
-}

Godeps/_workspace/src/github.com/codegangsta/martini/recovery_test.go

@@ -1,49 +0,0 @@
-package martini
-
-import (
-	"bytes"
-	"log"
-	"net/http"
-	"net/http/httptest"
-	"testing"
-)
-
-func Test_Recovery(t *testing.T) {
-	buff := bytes.NewBufferString("")
-	recorder := httptest.NewRecorder()
-
-	setENV(Dev)
-	m := New()
-	// replace log for testing
-	m.Map(log.New(buff, "[martini] ", 0))
-	m.Use(func(res http.ResponseWriter, req *http.Request) {
-		res.Header().Set("Content-Type", "unpredictable")
-	})
-	m.Use(Recovery())
-	m.Use(func(res http.ResponseWriter, req *http.Request) {
-		panic("here is a panic!")
-	})
-	m.ServeHTTP(recorder, (*http.Request)(nil))
-	expect(t, recorder.Code, http.StatusInternalServerError)
-	expect(t, recorder.HeaderMap.Get("Content-Type"), "text/html")
-	refute(t, recorder.Body.Len(), 0)
-	refute(t, len(buff.String()), 0)
-}
-
-func Test_Recovery_ResponseWriter(t *testing.T) {
-	recorder := httptest.NewRecorder()
-	recorder2 := httptest.NewRecorder()
-
-	setENV(Dev)
-	m := New()
-	m.Use(Recovery())
-	m.Use(func(c Context) {
-		c.MapTo(recorder2, (*http.ResponseWriter)(nil))
-		panic("here is a panic!")
-	})
-	m.ServeHTTP(recorder, (*http.Request)(nil))
-
-	expect(t, recorder2.Code, http.StatusInternalServerError)
-	expect(t, recorder2.HeaderMap.Get("Content-Type"), "text/html")
-	refute(t, recorder2.Body.Len(), 0)
-}

Godeps/_workspace/src/github.com/codegangsta/martini/response_writer.go

@@ -1,97 +0,0 @@
-package martini
-
-import (
-	"bufio"
-	"fmt"
-	"net"
-	"net/http"
-)
-
-// ResponseWriter is a wrapper around http.ResponseWriter that provides extra information about
-// the response. It is recommended that middleware handlers use this construct to wrap a responsewriter
-// if the functionality calls for it.
-type ResponseWriter interface {
-	http.ResponseWriter
-	http.Flusher
-	// Status returns the status code of the response or 0 if the response has not been written.
-	Status() int
-	// Written returns whether or not the ResponseWriter has been written.
-	Written() bool
-	// Size returns the size of the response body.
-	Size() int
-	// Before allows for a function to be called before the ResponseWriter has been written to. This is
-	// useful for setting headers or any other operations that must happen before a response has been written.
-	Before(BeforeFunc)
-}
-
-// BeforeFunc is a function that is called before the ResponseWriter has been written to.
-type BeforeFunc func(ResponseWriter)
-
-// NewResponseWriter creates a ResponseWriter that wraps an http.ResponseWriter
-func NewResponseWriter(rw http.ResponseWriter) ResponseWriter {
-	return &responseWriter{rw, 0, 0, nil}
-}
-
-type responseWriter struct {
-	http.ResponseWriter
-	status      int
-	size        int
-	beforeFuncs []BeforeFunc
-}
-
-func (rw *responseWriter) WriteHeader(s int) {
-	rw.callBefore()
-	rw.ResponseWriter.WriteHeader(s)
-	rw.status = s
-}
-
-func (rw *responseWriter) Write(b []byte) (int, error) {
-	if !rw.Written() {
-		// The status will be StatusOK if WriteHeader has not been called yet
-		rw.WriteHeader(http.StatusOK)
-	}
-	size, err := rw.ResponseWriter.Write(b)
-	rw.size += size
-	return size, err
-}
-
-func (rw *responseWriter) Status() int {
-	return rw.status
-}
-
-func (rw *responseWriter) Size() int {
-	return rw.size
-}
-
-func (rw *responseWriter) Written() bool {
-	return rw.status != 0
-}
-
-func (rw *responseWriter) Before(before BeforeFunc) {
-	rw.beforeFuncs = append(rw.beforeFuncs, before)
-}
-
-func (rw *responseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
-	hijacker, ok := rw.ResponseWriter.(http.Hijacker)
-	if !ok {
-		return nil, nil, fmt.Errorf("the ResponseWriter doesn't support the Hijacker interface")
-	}
-	return hijacker.Hijack()
-}
-
-func (rw *responseWriter) CloseNotify() <-chan bool {
-	return rw.ResponseWriter.(http.CloseNotifier).CloseNotify()
-}
-
-func (rw *responseWriter) callBefore() {
-	for i := len(rw.beforeFuncs) - 1; i >= 0; i-- {
-		rw.beforeFuncs[i](rw)
-	}
-}
-
-func (rw *responseWriter) Flush() {
-	flusher, ok := rw.ResponseWriter.(http.Flusher)
-	if ok {
-		flusher.Flush()
-	}
-}

Godeps/_workspace/src/github.com/codegangsta/martini/response_writer_test.go

@@ -1,188 +0,0 @@
-package martini
-
-import (
-	"bufio"
-	"io"
-	"net"
-	"net/http"
-	"net/http/httptest"
-	"testing"
-	"time"
-)
-
-type closeNotifyingRecorder struct {
-	*httptest.ResponseRecorder
-	closed chan bool
-}
-
-func newCloseNotifyingRecorder() *closeNotifyingRecorder {
-	return &closeNotifyingRecorder{
-		httptest.NewRecorder(),
-		make(chan bool, 1),
-	}
-}
-
-func (c *closeNotifyingRecorder) close() {
-	c.closed <- true
-}
-
-func (c *closeNotifyingRecorder) CloseNotify() <-chan bool {
-	return c.closed
-}
-
-type hijackableResponse struct {
-	Hijacked bool
-}
-
-func newHijackableResponse() *hijackableResponse {
-	return &hijackableResponse{}
-}
-
-func (h *hijackableResponse) Header() http.Header           { return nil }
-func (h *hijackableResponse) Write(buf []byte) (int, error) { return 0, nil }
-func (h *hijackableResponse) WriteHeader(code int)          {}
-func (h *hijackableResponse) Flush()                        {}
-func (h *hijackableResponse) Hijack() (net.Conn, *bufio.ReadWriter, error) {
-	h.Hijacked = true
-	return nil, nil, nil
-}
-
-func Test_ResponseWriter_WritingString(t *testing.T) {
-	rec := httptest.NewRecorder()
-	rw := NewResponseWriter(rec)
-
-	rw.Write([]byte("Hello world"))
-
-	expect(t, rec.Code, rw.Status())
-	expect(t, rec.Body.String(), "Hello world")
-	expect(t, rw.Status(), http.StatusOK)
-	expect(t, rw.Size(), 11)
-	expect(t, rw.Written(), true)
-}
-
-func Test_ResponseWriter_WritingStrings(t *testing.T) {
-	rec := httptest.NewRecorder()
-	rw := NewResponseWriter(rec)
-
-	rw.Write([]byte("Hello world"))
-	rw.Write([]byte("foo bar bat baz"))
-
-	expect(t, rec.Code, rw.Status())
-	expect(t, rec.Body.String(), "Hello worldfoo bar bat baz")
-	expect(t, rw.Status(), http.StatusOK)
-	expect(t, rw.Size(), 26)
-}
-
-func Test_ResponseWriter_WritingHeader(t *testing.T) {
-	rec := httptest.NewRecorder()
-	rw := NewResponseWriter(rec)
-
-	rw.WriteHeader(http.StatusNotFound)
-
-	expect(t, rec.Code, rw.Status())
-	expect(t, rec.Body.String(), "")
-	expect(t, rw.Status(), http.StatusNotFound)
-	expect(t, rw.Size(), 0)
-}
-
-func Test_ResponseWriter_Before(t *testing.T) {
-	rec := httptest.NewRecorder()
-	rw := NewResponseWriter(rec)
-	result := ""
-
-	rw.Before(func(ResponseWriter) {
-		result += "foo"
-	})
-	rw.Before(func(ResponseWriter) {
-		result += "bar"
-	})
-
-	rw.WriteHeader(http.StatusNotFound)
-
-	expect(t, rec.Code, rw.Status())
-	expect(t, rec.Body.String(), "")
-	expect(t, rw.Status(), http.StatusNotFound)
-	expect(t, rw.Size(), 0)
-	expect(t, result, "barfoo")
-}
-
-func Test_ResponseWriter_Hijack(t *testing.T) {
-	hijackable := newHijackableResponse()
-	rw := NewResponseWriter(hijackable)
-	hijacker, ok := rw.(http.Hijacker)
-	expect(t, ok, true)
-	_, _, err := hijacker.Hijack()
-	if err != nil {
-		t.Error(err)
-	}
-	expect(t, hijackable.Hijacked, true)
-}
-
-func Test_ResponseWrite_Hijack_NotOK(t *testing.T) {
-	hijackable := new(http.ResponseWriter)
-	rw := NewResponseWriter(*hijackable)
-	hijacker, ok := rw.(http.Hijacker)
-	expect(t, ok, true)
-	_, _, err := hijacker.Hijack()
-
-	refute(t, err, nil)
-}
-
-func Test_ResponseWriter_CloseNotify(t *testing.T) {
-	rec := newCloseNotifyingRecorder()
-	rw := NewResponseWriter(rec)
-	closed := false
-	notifier := rw.(http.CloseNotifier).CloseNotify()
-	rec.close()
-	select {
-	case <-notifier:
-		closed = true
-	case <-time.After(time.Second):
-	}
-	expect(t, closed, true)
-}
-
-func Test_ResponseWriter_Flusher(t *testing.T) {
-
-	rec := httptest.NewRecorder()
-	rw := NewResponseWriter(rec)
-
-	_, ok := rw.(http.Flusher)
-	expect(t, ok, true)
-}
-
-func Test_ResponseWriter_FlusherHandler(t *testing.T) {
-
-	// New martini instance
-	m := Classic()
-
-	m.Get("/events", func(w http.ResponseWriter, r *http.Request) {
-
-		f, ok := w.(http.Flusher)
-		expect(t, ok, true)
-
-		w.Header().Set("Content-Type", "text/event-stream")
-		w.Header().Set("Cache-Control", "no-cache")
-		w.Header().Set("Connection", "keep-alive")
-
-		for i := 0; i < 2; i++ {
-			time.Sleep(10 * time.Millisecond)
-			io.WriteString(w, "data: Hello\n\n")
-			f.Flush()
-		}
-
-	})
-
-	recorder := httptest.NewRecorder()
-	r, _ := http.NewRequest("GET", "/events", nil)
-	m.ServeHTTP(recorder, r)
-
-	if recorder.Code != 200 {
-		t.Error("Response not 200")
-	}
-
-	if recorder.Body.String() != "data: Hello\n\ndata: Hello\n\n" {
-		t.Error("Didn't receive correct body, got:", recorder.Body.String())
-	}
-
-}

Godeps/_workspace/src/github.com/codegangsta/martini/return_handler.go

@@ -1,43 +0,0 @@
-package martini
-
-import (
-	"github.com/codegangsta/inject"
-	"net/http"
-	"reflect"
-)
-
-// ReturnHandler is a service that Martini provides that is called
-// when a route handler returns something. The ReturnHandler is
-// responsible for writing to the ResponseWriter based on the values
-// that are passed into this function.
-type ReturnHandler func(Context, []reflect.Value)
-
-func defaultReturnHandler() ReturnHandler {
-	return func(ctx Context, vals []reflect.Value) {
-		rv := ctx.Get(inject.InterfaceOf((*http.ResponseWriter)(nil)))
-		res := rv.Interface().(http.ResponseWriter)
-		var responseVal reflect.Value
-		if len(vals) > 1 && vals[0].Kind() == reflect.Int {
-			res.WriteHeader(int(vals[0].Int()))
-			responseVal = vals[1]
-		} else if len(vals) > 0 {
-			responseVal = vals[0]
-		}
-		if canDeref(responseVal) {
-			responseVal = responseVal.Elem()
-		}
-		if isByteSlice(responseVal) {
-			res.Write(responseVal.Bytes())
-		} else {
-			res.Write([]byte(responseVal.String()))
-		}
-	}
-}
-
-func isByteSlice(val reflect.Value) bool {
-	return val.Kind() == reflect.Slice && val.Type().Elem().Kind() == reflect.Uint8
-}
-
-func canDeref(val reflect.Value) bool {
-	return val.Kind() == reflect.Interface || val.Kind() == reflect.Ptr
-}

Godeps/_workspace/src/github.com/codegangsta/martini/router.go

@@ -1,331 +0,0 @@
-package martini
-
-import (
-	"fmt"
-	"net/http"
-	"reflect"
-	"regexp"
-	"strconv"
-)
-
-// Params is a map of name/value pairs for named routes. An instance of martini.Params is available to be injected into any route handler.
-type Params map[string]string
-
-// Router is Martini's de-facto routing interface. Supports HTTP verbs, stacked handlers, and dependency injection.
-type Router interface {
-	Routes
-
-	// Group adds a group where related routes can be added.
-	Group(string, func(Router), ...Handler)
-	// Get adds a route for a HTTP GET request to the specified matching pattern.
-	Get(string, ...Handler) Route
-	// Patch adds a route for a HTTP PATCH request to the specified matching pattern.
-	Patch(string, ...Handler) Route
-	// Post adds a route for a HTTP POST request to the specified matching pattern.
-	Post(string, ...Handler) Route
-	// Put adds a route for a HTTP PUT request to the specified matching pattern.
-	Put(string, ...Handler) Route
-	// Delete adds a route for a HTTP DELETE request to the specified matching pattern.
-	Delete(string, ...Handler) Route
-	// Options adds a route for a HTTP OPTIONS request to the specified matching pattern.
-	Options(string, ...Handler) Route
-	// Head adds a route for a HTTP HEAD request to the specified matching pattern.
-	Head(string, ...Handler) Route
-	// Any adds a route for any HTTP method request to the specified matching pattern.
-	Any(string, ...Handler) Route
-
-	// NotFound sets the handlers that are called when a no route matches a request. Throws a basic 404 by default.
-	NotFound(...Handler)
-
-	// Handle is the entry point for routing. This is used as a martini.Handler
-	Handle(http.ResponseWriter, *http.Request, Context)
-}
-
-type router struct {
-	routes    []*route
-	notFounds []Handler
-	groups    []group
-}
-
-type group struct {
-	pattern  string
-	handlers []Handler
-}
-
-// NewRouter creates a new Router instance.
-// If you aren't using ClassicMartini, then you can add Routes as a
-// service with:
-//
-//	m := martini.New()
-//	r := martini.NewRouter()
-//	m.MapTo(r, (*martini.Routes)(nil))
-//
-// If you are using ClassicMartini, then this is done for you.
-func NewRouter() Router {
-	return &router{notFounds: []Handler{http.NotFound}, groups: make([]group, 0)}
-}
-
-func (r *router) Group(pattern string, fn func(Router), h ...Handler) {
-	r.groups = append(r.groups, group{pattern, h})
-	fn(r)
-	r.groups = r.groups[:len(r.groups)-1]
-}
-
-func (r *router) Get(pattern string, h ...Handler) Route {
-	return r.addRoute("GET", pattern, h)
-}
-
-func (r *router) Patch(pattern string, h ...Handler) Route {
-	return r.addRoute("PATCH", pattern, h)
-}
-
-func (r *router) Post(pattern string, h ...Handler) Route {
-	return r.addRoute("POST", pattern, h)
-}
-
-func (r *router) Put(pattern string, h ...Handler) Route {
-	return r.addRoute("PUT", pattern, h)
-}
-
-func (r *router) Delete(pattern string, h ...Handler) Route {
-	return r.addRoute("DELETE", pattern, h)
-}
-
-func (r *router) Options(pattern string, h ...Handler) Route {
-	return r.addRoute("OPTIONS", pattern, h)
-}
-
-func (r *router) Head(pattern string, h ...Handler) Route {
-	return r.addRoute("HEAD", pattern, h)
-}
-
-func (r *router) Any(pattern string, h ...Handler) Route {
-	return r.addRoute("*", pattern, h)
-}
-
-func (r *router) Handle(res http.ResponseWriter, req *http.Request, context Context) {
-	for _, route := range r.routes {
-		ok, vals := route.Match(req.Method, req.URL.Path)
-		if ok {
-			params := Params(vals)
-			context.Map(params)
-			route.Handle(context, res)
-			return
-		}
-	}
-
-	// no routes exist, 404
-	c := &routeContext{context, 0, r.notFounds}
-	context.MapTo(c, (*Context)(nil))
-	c.run()
-}
-
-func (r *router) NotFound(handler ...Handler) {
-	r.notFounds = handler
-}
-
-func (r *router) addRoute(method string, pattern string, handlers []Handler) *route {
-	if len(r.groups) > 0 {
-		group := r.groups[len(r.groups)-1]
-		pattern = group.pattern + pattern
-		h := make([]Handler, len(group.handlers)+len(handlers))
-		copy(h, group.handlers)
-		copy(h[len(group.handlers):], handlers)
-		handlers = h
-	}
-
-	route := newRoute(method, pattern, handlers)
-	route.Validate()
-	r.routes = append(r.routes, route)
-	return route
-}
-
-func (r *router) findRoute(name string) *route {
-	for _, route := range r.routes {
-		if route.name == name {
-			return route
-		}
-	}
-
-	return nil
-}
-
-// Route is an interface representing a Route in Martini's routing layer.
-type Route interface {
-	// URLWith returns a rendering of the Route's url with the given string params.
-	URLWith([]string) string
-	Name(string)
-}
-
-type route struct {
-	method   string
-	regex    *regexp.Regexp
-	handlers []Handler
-	pattern  string
-	name     string
-}
-
-func newRoute(method string, pattern string, handlers []Handler) *route {
-	route := route{method, nil, handlers, pattern, ""}
-	r := regexp.MustCompile(`:[^/#?()\.\\]+`)
-	pattern = r.ReplaceAllStringFunc(pattern, func(m string) string {
-		return fmt.Sprintf(`(?P<%s>[^/#?]+)`, m[1:])
-	})
-	r2 := regexp.MustCompile(`\*\*`)
-	var index int
-	pattern = r2.ReplaceAllStringFunc(pattern, func(m string) string {
-		index++
-		return fmt.Sprintf(`(?P<_%d>[^#?]*)`, index)
-	})
-	pattern += `\/?`
-	route.regex = regexp.MustCompile(pattern)
-	return &route
-}
-
-func (r route) MatchMethod(method string) bool {
-	return r.method == "*" || method == r.method || (method == "HEAD" && r.method == "GET")
-}
-
-func (r route) Match(method string, path string) (bool, map[string]string) {
-	// add Any method matching support
-	if !r.MatchMethod(method) {
-		return false, nil
-	}
-
-	matches := r.regex.FindStringSubmatch(path)
-	if len(matches) > 0 && matches[0] == path {
-		params := make(map[string]string)
-		for i, name := range r.regex.SubexpNames() {
-			if len(name) > 0 {
-				params[name] = matches[i]
-			}
-		}
-		return true, params
-	}
-	return false, nil
-}
-
-func (r *route) Validate() {
-	for _, handler := range r.handlers {
-		validateHandler(handler)
-	}
-}
-
-func (r *route) Handle(c Context, res http.ResponseWriter) {
-	context := &routeContext{c, 0, r.handlers}
-	c.MapTo(context, (*Context)(nil))
-	context.run()
-}
-
-// URLWith returns the url pattern replacing the parameters for its values
-func (r *route) URLWith(args []string) string {
-	if len(args) > 0 {
-		reg := regexp.MustCompile(`:[^/#?()\.\\]+`)
-		argCount := len(args)
-		i := 0
-		url := reg.ReplaceAllStringFunc(r.pattern, func(m string) string {
-			var val interface{}
-			if i < argCount {
-				val = args[i]
-			} else {
-				val = m
-			}
-			i += 1
-			return fmt.Sprintf(`%v`, val)
-		})
-
-		return url
-	}
-	return r.pattern
-}
-
-func (r *route) Name(name string) {
-	r.name = name
-}
-
-// Routes is a helper service for Martini's routing layer.
-type Routes interface {
-	// URLFor returns a rendered URL for the given route. Optional params can be passed to fulfill named parameters in the route.
-	URLFor(name string, params ...interface{}) string
-	// MethodsFor returns an array of methods available for the path
-	MethodsFor(path string) []string
-}
-
-// URLFor returns the url for the given route name.
-func (r *router) URLFor(name string, params ...interface{}) string {
-	route := r.findRoute(name)
-
-	if route == nil {
-		panic("route not found")
-	}
-
-	var args []string
-	for _, param := range params {
-		switch v := param.(type) {
-		case int:
-			args = append(args, strconv.FormatInt(int64(v), 10))
-		case string:
-			args = append(args, v)
-		default:
-			if v != nil {
-				panic("Arguments passed to URLFor must be integers or strings")
-			}
-		}
-	}
-
-	return route.URLWith(args)
-}
-
-func hasMethod(methods []string, method string) bool {
-	for _, v := range methods {
-		if v == method {
-			return true
-		}
-	}
-	return false
-}
-
-// MethodsFor returns all methods available for path
-func (r *router) MethodsFor(path string) []string {
-	methods := []string{}
-	for _, route := range r.routes {
-		matches := route.regex.FindStringSubmatch(path)
-		if len(matches) > 0 && matches[0] == path && !hasMethod(methods, route.method) {
-			methods = append(methods, route.method)
-		}
-	}
-	return methods
-}
-
-type routeContext struct {
-	Context
-	index    int
-	handlers []Handler
-}
-
-func (r *routeContext) Next() {
-	r.index += 1
-	r.run()
-}
-
-func (r *routeContext) run() {
-	for r.index < len(r.handlers) {
-		handler := r.handlers[r.index]
-		vals, err := r.Invoke(handler)
-		if err != nil {
-			panic(err)
-		}
-		r.index += 1
-
-		// if the handler returned something, write it to the http response
-		if len(vals) > 0 {
-			ev := r.Get(reflect.TypeOf(ReturnHandler(nil)))
-			handleReturn := ev.Interface().(ReturnHandler)
-			handleReturn(r, vals)
-		}
-
-		if r.Written() {
-			return
-		}
-	}
-}

Godeps/_workspace/src/github.com/codegangsta/martini/router_test.go

@@ -1,410 +0,0 @@
-package martini
-
-import (
-	"net/http"
-	"net/http/httptest"
-	"strings"
-	"testing"
-)
-
-func Test_Routing(t *testing.T) {
-	router := NewRouter()
-	recorder := httptest.NewRecorder()
-
-	req, _ := http.NewRequest("GET", "http://localhost:3000/foo", nil)
-	context := New().createContext(recorder, req)
-
-	req2, _ := http.NewRequest("POST", "http://localhost:3000/bar/bat", nil)
-	context2 := New().createContext(recorder, req2)
-
-	req3, _ := http.NewRequest("DELETE", "http://localhost:3000/baz", nil)
-	context3 := New().createContext(recorder, req3)
-
-	req4, _ := http.NewRequest("PATCH", "http://localhost:3000/bar/foo", nil)
-	context4 := New().createContext(recorder, req4)
-
-	req5, _ := http.NewRequest("GET", "http://localhost:3000/fez/this/should/match", nil)
-	context5 := New().createContext(recorder, req5)
-
-	req6, _ := http.NewRequest("PUT", "http://localhost:3000/pop/blah/blah/blah/bap/foo/", nil)
-	context6 := New().createContext(recorder, req6)
-
-	req7, _ := http.NewRequest("DELETE", "http://localhost:3000/wap//pow", nil)
-	context7 := New().createContext(recorder, req7)
-
-	req8, _ := http.NewRequest("HEAD", "http://localhost:3000/wap//pow", nil)
-	context8 := New().createContext(recorder, req8)
-
-	req9, _ := http.NewRequest("OPTIONS", "http://localhost:3000/opts", nil)
-	context9 := New().createContext(recorder, req9)
-
-	req10, _ := http.NewRequest("HEAD", "http://localhost:3000/foo", nil)
-	context10 := New().createContext(recorder, req10)
-
-	req11, _ := http.NewRequest("GET", "http://localhost:3000/bazz/inga", nil)
-	context11 := New().createContext(recorder, req11)
-
-	req12, _ := http.NewRequest("POST", "http://localhost:3000/bazz/inga", nil)
-	context12 := New().createContext(recorder, req12)
-
-	result := ""
-	router.Get("/foo", func(req *http.Request) {
-		result += "foo"
-	})
-	router.Patch("/bar/:id", func(params Params) {
-		expect(t, params["id"], "foo")
-		result += "barfoo"
-	})
-	router.Post("/bar/:id", func(params Params) {
-		expect(t, params["id"], "bat")
-		result += "barbat"
-	})
-	router.Put("/fizzbuzz", func() {
-		result += "fizzbuzz"
-	})
-	router.Delete("/bazzer", func(c Context) {
-		result += "baz"
-	})
-	router.Get("/fez/**", func(params Params) {
-		expect(t, params["_1"], "this/should/match")
-		result += "fez"
-	})
-	router.Put("/pop/**/bap/:id/**", func(params Params) {
-		expect(t, params["id"], "foo")
-		expect(t, params["_1"], "blah/blah/blah")
-		expect(t, params["_2"], "")
-		result += "popbap"
-	})
-	router.Delete("/wap/**/pow", func(params Params) {
-		expect(t, params["_1"], "")
-		result += "wappow"
-	})
-	router.Options("/opts", func() {
-		result += "opts"
-	})
-	router.Head("/wap/**/pow", func(params Params) {
-		expect(t, params["_1"], "")
-		result += "wappow"
-	})
-	router.Group("/bazz", func(r Router) {
-		r.Get("/inga", func() {
-			result += "get"
-		})
-
-		r.Post("/inga", func() {
-			result += "post"
-		})
-	}, func() {
-		result += "bazz"
-	}, func() {
-		result += "inga"
-	})
-
-	router.Handle(recorder, req, context)
-	router.Handle(recorder, req2, context2)
-	router.Handle(recorder, req3, context3)
-	router.Handle(recorder, req4, context4)
-	router.Handle(recorder, req5, context5)
-	router.Handle(recorder, req6, context6)
-	router.Handle(recorder, req7, context7)
-	router.Handle(recorder, req8, context8)
-	router.Handle(recorder, req9, context9)
-	router.Handle(recorder, req10, context10)
-	router.Handle(recorder, req11, context11)
-	router.Handle(recorder, req12, context12)
-	expect(t, result, "foobarbatbarfoofezpopbapwappowwappowoptsfoobazzingagetbazzingapost")
-	expect(t, recorder.Code, http.StatusNotFound)
-	expect(t, recorder.Body.String(), "404 page not found\n")
-}
-
-func Test_RouterHandlerStatusCode(t *testing.T) {
-	router := NewRouter()
-	router.Get("/foo", func() string {
-		return "foo"
-	})
-	router.Get("/bar", func() (int, string) {
-		return http.StatusForbidden, "bar"
-	})
-	router.Get("/baz", func() (string, string) {
-		return "baz", "BAZ!"
-	})
-	router.Get("/bytes", func() []byte {
-		return []byte("Bytes!")
-	})
-	router.Get("/interface", func() interface{} {
-		return "Interface!"
-	})
-
-	// code should be 200 if none is returned from the handler
-	recorder := httptest.NewRecorder()
-	req, _ := http.NewRequest("GET", "http://localhost:3000/foo", nil)
-	context := New().createContext(recorder, req)
-	router.Handle(recorder, req, context)
-	expect(t, recorder.Code, http.StatusOK)
-	expect(t, recorder.Body.String(), "foo")
-
-	// if a status code is returned, it should be used
-	recorder = httptest.NewRecorder()
-	req, _ = http.NewRequest("GET", "http://localhost:3000/bar", nil)
-	context = New().createContext(recorder, req)
-	router.Handle(recorder, req, context)
-	expect(t, recorder.Code, http.StatusForbidden)
-	expect(t, recorder.Body.String(), "bar")
-
-	// shouldn't use the first returned value as a status code if not an integer
-	recorder = httptest.NewRecorder()
-	req, _ = http.NewRequest("GET", "http://localhost:3000/baz", nil)
-	context = New().createContext(recorder, req)
-	router.Handle(recorder, req, context)
-	expect(t, recorder.Code, http.StatusOK)
-	expect(t, recorder.Body.String(), "baz")
-
-	// Should render bytes as a return value as well.
-	recorder = httptest.NewRecorder()
-	req, _ = http.NewRequest("GET", "http://localhost:3000/bytes", nil)
-	context = New().createContext(recorder, req)
-	router.Handle(recorder, req, context)
-	expect(t, recorder.Code, http.StatusOK)
-	expect(t, recorder.Body.String(), "Bytes!")
-
-	// Should render interface{} values.
-	recorder = httptest.NewRecorder()
-	req, _ = http.NewRequest("GET", "http://localhost:3000/interface", nil)
-	context = New().createContext(recorder, req)
-	router.Handle(recorder, req, context)
-	expect(t, recorder.Code, http.StatusOK)
-	expect(t, recorder.Body.String(), "Interface!")
-}
-
-func Test_RouterHandlerStacking(t *testing.T) {
-	router := NewRouter()
-	recorder := httptest.NewRecorder()
-
-	req, _ := http.NewRequest("GET", "http://localhost:3000/foo", nil)
-	context := New().createContext(recorder, req)
-
-	result := ""
-
-	f1 := func() {
-		result += "foo"
-	}
-
-	f2 := func(c Context) {
-		result += "bar"
-		c.Next()
-		result += "bing"
-	}
-
-	f3 := func() string {
-		result += "bat"
-		return "Hello world"
-	}
-
-	f4 := func() {
-		result += "baz"
-	}
-
-	router.Get("/foo", f1, f2, f3, f4)
-
-	router.Handle(recorder, req, context)
-	expect(t, result, "foobarbatbing")
-	expect(t, recorder.Body.String(), "Hello world")
-}
-
-var routeTests = []struct {
-	// in
-	method string
-	path   string
-
-	// out
-	ok     bool
-	params map[string]string
-}{
-	{"GET", "/foo/123/bat/321", true, map[string]string{"bar": "123", "baz": "321"}},
-	{"POST", "/foo/123/bat/321", false, map[string]string{}},
-	{"GET", "/foo/hello/bat/world", true, map[string]string{"bar": "hello", "baz": "world"}},
-	{"GET", "foo/hello/bat/world", false, map[string]string{}},
-	{"GET", "/foo/123/bat/321/", true, map[string]string{"bar": "123", "baz": "321"}},
-	{"GET", "/foo/123/bat/321//", false, map[string]string{}},
-	{"GET", "/foo/123//bat/321/", false, map[string]string{}},
-}
-
-func Test_RouteMatching(t *testing.T) {
-	route := newRoute("GET", "/foo/:bar/bat/:baz", nil)
-	for _, tt := range routeTests {
-		ok, params := route.Match(tt.method, tt.path)
-		if ok != tt.ok || params["bar"] != tt.params["bar"] || params["baz"] != tt.params["baz"] {
-			t.Errorf("expected: (%v, %v) got: (%v, %v)", tt.ok, tt.params, ok, params)
-		}
-	}
-}
-
-func Test_MethodsFor(t *testing.T) {
-	router := NewRouter()
-	recorder := httptest.NewRecorder()
-
-	req, _ := http.NewRequest("POST", "http://localhost:3000/foo", nil)
-	context := New().createContext(recorder, req)
-	context.MapTo(router, (*Routes)(nil))
-	router.Post("/foo/bar", func() {
-	})
-
-	router.Post("/fo", func() {
-	})
-
-	router.Get("/foo", func() {
-	})
-
-	router.Put("/foo", func() {
-	})
-
-	router.NotFound(func(routes Routes, w http.ResponseWriter, r *http.Request) {
-		methods := routes.MethodsFor(r.URL.Path)
-		if len(methods) != 0 {
-			w.Header().Set("Allow", strings.Join(methods, ","))
-			w.WriteHeader(http.StatusMethodNotAllowed)
-		}
-	})
-	router.Handle(recorder, req, context)
-	expect(t, recorder.Code, http.StatusMethodNotAllowed)
-	expect(t, recorder.Header().Get("Allow"), "GET,PUT")
-}
-
-func Test_NotFound(t *testing.T) {
-	router := NewRouter()
-	recorder := httptest.NewRecorder()
-
-	req, _ := http.NewRequest("GET", "http://localhost:3000/foo", nil)
-	context := New().createContext(recorder, req)
-
-	router.NotFound(func(res http.ResponseWriter) {
-		http.Error(res, "Nope", http.StatusNotFound)
-	})
-
-	router.Handle(recorder, req, context)
-	expect(t, recorder.Code, http.StatusNotFound)
-	expect(t, recorder.Body.String(), "Nope\n")
-}
-
-func Test_NotFoundAsHandler(t *testing.T) {
-	router := NewRouter()
-	recorder := httptest.NewRecorder()
-
-	req, _ := http.NewRequest("GET", "http://localhost:3000/foo", nil)
-	context := New().createContext(recorder, req)
-
-	router.NotFound(func() string {
-		return "not found"
-	})
-
-	router.Handle(recorder, req, context)
-	expect(t, recorder.Code, http.StatusOK)
-	expect(t, recorder.Body.String(), "not found")
-
-	recorder = httptest.NewRecorder()
-
-	context = New().createContext(recorder, req)
-
-	router.NotFound(func() (int, string) {
-		return 404, "not found"
-	})
-
-	router.Handle(recorder, req, context)
-	expect(t, recorder.Code, http.StatusNotFound)
-	expect(t, recorder.Body.String(), "not found")
-
-	recorder = httptest.NewRecorder()
-
-	context = New().createContext(recorder, req)
-
-	router.NotFound(func() (int, string) {
-		return 200, ""
-	})
-
-	router.Handle(recorder, req, context)
-	expect(t, recorder.Code, http.StatusOK)
-	expect(t, recorder.Body.String(), "")
-}
-
-func Test_NotFoundStacking(t *testing.T) {
-	router := NewRouter()
-	recorder := httptest.NewRecorder()
-
-	req, _ := http.NewRequest("GET", "http://localhost:3000/foo", nil)
-	context := New().createContext(recorder, req)
-
-	result := ""
-
-	f1 := func() {
-		result += "foo"
-	}
-
-	f2 := func(c Context) {
-		result += "bar"
-		c.Next()
-		result += "bing"
-	}
-
-	f3 := func() string {
-		result += "bat"
-		return "Not Found"
-	}
-
-	f4 := func() {
-		result += "baz"
-	}
-
-	router.NotFound(f1, f2, f3, f4)
-
-	router.Handle(recorder, req, context)
-	expect(t, result, "foobarbatbing")
-	expect(t, recorder.Body.String(), "Not Found")
-}
-
-func Test_Any(t *testing.T) {
-	router := NewRouter()
-	router.Any("/foo", func(res http.ResponseWriter) {
-		http.Error(res, "Nope", http.StatusNotFound)
-	})
-
-	recorder := httptest.NewRecorder()
-	req, _ := http.NewRequest("GET", "http://localhost:3000/foo", nil)
-	context := New().createContext(recorder, req)
-	router.Handle(recorder, req, context)
-
-	expect(t, recorder.Code, http.StatusNotFound)
-	expect(t, recorder.Body.String(), "Nope\n")
-
-	recorder = httptest.NewRecorder()
-	req, _ = http.NewRequest("PUT", "http://localhost:3000/foo", nil)
-	context = New().createContext(recorder, req)
-	router.Handle(recorder, req, context)
-
-	expect(t, recorder.Code, http.StatusNotFound)
-	expect(t, recorder.Body.String(), "Nope\n")
-}
-
-func Test_URLFor(t *testing.T) {
-	router := NewRouter()
-
-	router.Get("/foo", func() {
-		// Nothing
-	}).Name("foo")
-
-	router.Post("/bar/:id", func(params Params) {
-		// Nothing
-	}).Name("bar")
-
-	router.Get("/bar/:id/:name", func(params Params, routes Routes) {
-		expect(t, routes.URLFor("foo", nil), "/foo")
-		expect(t, routes.URLFor("bar", 5), "/bar/5")
-		expect(t, routes.URLFor("bar_id", 5, "john"), "/bar/5/john")
-	}).Name("bar_id")
-
-	// code should be 200 if none is returned from the handler
-	recorder := httptest.NewRecorder()
-	req, _ := http.NewRequest("GET", "http://localhost:3000/bar/foo/bar", nil)
-	context := New().createContext(recorder, req)
-	context.MapTo(router, (*Routes)(nil))
-	router.Handle(recorder, req, context)
-}

Godeps/_workspace/src/github.com/codegangsta/martini/static.go

@@ -1,109 +0,0 @@
-package martini
-
-import (
-	"log"
-	"net/http"
-	"path"
-	"strings"
-)
-
-// StaticOptions is a struct for specifying configuration options for the martini.Static middleware.
-type StaticOptions struct {
-	// Prefix is the optional prefix used to serve the static directory content
-	Prefix string
-	// SkipLogging will disable [Static] log messages when a static file is served.
-	SkipLogging bool
-	// IndexFile defines which file to serve as index if it exists.
-	IndexFile string
-	// Expires defines which user-defined function to use for producing a HTTP Expires Header
-	// https://developers.google.com/speed/docs/insights/LeverageBrowserCaching
-	Expires func() string
-}
-
-func prepareStaticOptions(options []StaticOptions) StaticOptions {
-	var opt StaticOptions
-	if len(options) > 0 {
-		opt = options[0]
-	}
-
-	// Defaults
-	if len(opt.IndexFile) == 0 {
-		opt.IndexFile = "index.html"
-	}
-	// Normalize the prefix if provided
-	if opt.Prefix != "" {
-		// Ensure we have a leading '/'
-		if opt.Prefix[0] != '/' {
-			opt.Prefix = "/" + opt.Prefix
-		}
-		// Remove any trailing '/'
-		opt.Prefix = strings.TrimRight(opt.Prefix, "/")
-	}
-	return opt
-}
-
-// Static returns a middleware handler that serves static files in the given directory.
-func Static(directory string, staticOpt ...StaticOptions) Handler {
-	dir := http.Dir(directory)
-	opt := prepareStaticOptions(staticOpt)
-
-	return func(res http.ResponseWriter, req *http.Request, log *log.Logger) {
-		if req.Method != "GET" && req.Method != "HEAD" {
-			return
-		}
-		file := req.URL.Path
-		// if we have a prefix, filter requests by stripping the prefix
-		if opt.Prefix != "" {
-			if !strings.HasPrefix(file, opt.Prefix) {
-				return
-			}
-			file = file[len(opt.Prefix):]
-			if file != "" && file[0] != '/' {
-				return
-			}
-		}
-		f, err := dir.Open(file)
-		if err != nil {
-			// discard the error?
-			return
-		}
-		defer f.Close()
-
-		fi, err := f.Stat()
-		if err != nil {
-			return
-		}
-
-		// try to serve index file
-		if fi.IsDir() {
-			// redirect if missing trailing slash
-			if !strings.HasSuffix(req.URL.Path, "/") {
-				http.Redirect(res, req, req.URL.Path+"/", http.StatusFound)
-				return
-			}
-
-			file = path.Join(file, opt.IndexFile)
-			f, err = dir.Open(file)
-			if err != nil {
-				return
-			}
-			defer f.Close()
-
-			fi, err = f.Stat()
-			if err != nil || fi.IsDir() {
-				return
-			}
-		}
-
-		if !opt.SkipLogging {
-			log.Println("[Static] Serving " + file)
-		}
-
-		// Add an Expires header to the static content
-		if opt.Expires != nil {
-			res.Header().Set("Expires", opt.Expires())
-		}
-
-		http.ServeContent(res, req, file, fi.ModTime(), f)
-	}
-}

Godeps/_workspace/src/github.com/codegangsta/martini/static_test.go

@@ -1,200 +0,0 @@
-package martini
-
-import (
-	"bytes"
-	"log"
-	"net/http"
-	"net/http/httptest"
-	"testing"
-
-	"github.com/codegangsta/inject"
-)
-
-func Test_Static(t *testing.T) {
-	response := httptest.NewRecorder()
-	response.Body = new(bytes.Buffer)
-
-	m := New()
-	r := NewRouter()
-
-	m.Use(Static("."))
-	m.Action(r.Handle)
-
-	req, err := http.NewRequest("GET", "http://localhost:3000/martini.go", nil)
-	if err != nil {
-		t.Error(err)
-	}
-	m.ServeHTTP(response, req)
-	expect(t, response.Code, http.StatusOK)
-	expect(t, response.Header().Get("Expires"), "")
-	if response.Body.Len() == 0 {
-		t.Errorf("Got empty body for GET request")
-	}
-}
-
-func Test_Static_Head(t *testing.T) {
-	response := httptest.NewRecorder()
-	response.Body = new(bytes.Buffer)
-
-	m := New()
-	r := NewRouter()
-
-	m.Use(Static("."))
-	m.Action(r.Handle)
-
-	req, err := http.NewRequest("HEAD", "http://localhost:3000/martini.go", nil)
-	if err != nil {
-		t.Error(err)
-	}
-
-	m.ServeHTTP(response, req)
-	expect(t, response.Code, http.StatusOK)
-	if response.Body.Len() != 0 {
-		t.Errorf("Got non-empty body for HEAD request")
-	}
-}
-
-func Test_Static_As_Post(t *testing.T) {
-	response := httptest.NewRecorder()
-
-	m := New()
-	r := NewRouter()
-
-	m.Use(Static("."))
-	m.Action(r.Handle)
-
-	req, err := http.NewRequest("POST", "http://localhost:3000/martini.go", nil)
-	if err != nil {
-		t.Error(err)
-	}
-
-	m.ServeHTTP(response, req)
-	expect(t, response.Code, http.StatusNotFound)
-}
-
-func Test_Static_BadDir(t *testing.T) {
-	response := httptest.NewRecorder()
-
-	m := Classic()
-
-	req, err := http.NewRequest("GET", "http://localhost:3000/martini.go", nil)
-	if err != nil {
-		t.Error(err)
-	}
-
-	m.ServeHTTP(response, req)
-	refute(t, response.Code, http.StatusOK)
-}
-
-func Test_Static_Options_Logging(t *testing.T) {
-	response := httptest.NewRecorder()
-
-	var buffer bytes.Buffer
-	m := &Martini{Injector: inject.New(), action: func() {}, logger: log.New(&buffer, "[martini] ", 0)}
-	m.Map(m.logger)
-	m.Map(defaultReturnHandler())
-
-	opt := StaticOptions{}
-	m.Use(Static(".", opt))
-
-	req, err := http.NewRequest("GET", "http://localhost:3000/martini.go", nil)
-	if err != nil {
-		t.Error(err)
-	}
-
-	m.ServeHTTP(response, req)
-	expect(t, response.Code, http.StatusOK)
-	expect(t, buffer.String(), "[martini] [Static] Serving /martini.go\n")
-
-	// Now without logging
-	m.Handlers()
-	buffer.Reset()
-
-	// This should disable logging
-	opt.SkipLogging = true
-	m.Use(Static(".", opt))
-
-	m.ServeHTTP(response, req)
-	expect(t, response.Code, http.StatusOK)
-	expect(t, buffer.String(), "")
-}
-
-func Test_Static_Options_ServeIndex(t *testing.T) {
-	response := httptest.NewRecorder()
-
-	var buffer bytes.Buffer
-	m := &Martini{Injector: inject.New(), action: func() {}, logger: log.New(&buffer, "[martini] ", 0)}
-	m.Map(m.logger)
-	m.Map(defaultReturnHandler())
-
-	opt := StaticOptions{IndexFile: "martini.go"} // Define martini.go as index file
-	m.Use(Static(".", opt))
-
-	req, err := http.NewRequest("GET", "http://localhost:3000/", nil)
-	if err != nil {
-		t.Error(err)
-	}
-
-	m.ServeHTTP(response, req)
-	expect(t, response.Code, http.StatusOK)
-	expect(t, buffer.String(), "[martini] [Static] Serving /martini.go\n")
-}
-
-func Test_Static_Options_Prefix(t *testing.T) {
-	response := httptest.NewRecorder()
-
-	var buffer bytes.Buffer
-	m := &Martini{Injector: inject.New(), action: func() {}, logger: log.New(&buffer, "[martini] ", 0)}
-	m.Map(m.logger)
-	m.Map(defaultReturnHandler())
-
-	// Serve current directory under /public
-	m.Use(Static(".", StaticOptions{Prefix: "/public"}))
-
-	// Check file content behaviour
-	req, err := http.NewRequest("GET", "http://localhost:3000/public/martini.go", nil)
-	if err != nil {
-		t.Error(err)
-	}
-
-	m.ServeHTTP(response, req)
-	expect(t, response.Code, http.StatusOK)
-	expect(t, buffer.String(), "[martini] [Static] Serving /martini.go\n")
-}
-
-func Test_Static_Options_Expires(t *testing.T) {
-	response := httptest.NewRecorder()
-
-	var buffer bytes.Buffer
-	m := &Martini{Injector: inject.New(), action: func() {}, logger: log.New(&buffer, "[martini] ", 0)}
-	m.Map(m.logger)
-	m.Map(defaultReturnHandler())
-
-	// Serve current directory under /public
-	m.Use(Static(".", StaticOptions{Expires: func() string { return "46" }}))
-
-	// Check file content behaviour
-	req, err := http.NewRequest("GET", "http://localhost:3000/martini.go", nil)
-	if err != nil {
-		t.Error(err)
-	}
-
-	m.ServeHTTP(response, req)
-	expect(t, response.Header().Get("Expires"), "46")
-}
-
-func Test_Static_Redirect(t *testing.T) {
-	response := httptest.NewRecorder()
-
-	m := New()
-	m.Use(Static(".", StaticOptions{Prefix: "/public"}))
-
-	req, err := http.NewRequest("GET", "http://localhost:3000/public", nil)
-	if err != nil {
-		t.Error(err)
-	}
-
-	m.ServeHTTP(response, req)
-	expect(t, response.Code, http.StatusFound)
-	expect(t, response.Header().Get("Location"), "/public/")
-}

Godeps/_workspace/src/github.com/codegangsta/martini/translations/README_zh_cn.md

@@ -1,311 +0,0 @@
-# Martini  [![wercker status](https://app.wercker.com/status/174bef7e3c999e103cacfe2770102266 "wercker status")](https://app.wercker.com/project/bykey/174bef7e3c999e103cacfe2770102266) [![GoDoc](https://godoc.org/github.com/codegangsta/martini?status.png)](http://godoc.org/github.com/codegangsta/martini)
-
-Martini是一个强大为了编写模块化Web应用而生的GO语言框架.
-
-## 第一个应用
-
-在你安装了GO语言和设置了你的[GOPATH](http://golang.org/doc/code.html#GOPATH)之后, 创建你的自己的`.go`文件, 这里我们假设它的名字叫做 `server.go`.
-
-~~~ go
-package main
-
-import "github.com/codegangsta/martini"
-
-func main() {
-  m := martini.Classic()
-  m.Get("/", func() string {
-    return "Hello world!"
-  })
-  m.Run()
-}
-~~~
-
-然后安装Martini的包. (注意Martini需要Go语言1.1或者以上的版本支持):
-~~~
-go get github.com/codegangsta/martini
-~~~
-
-最后运行你的服务:
-~~~
-go run server.go
-~~~
-
-这时你将会有一个Martini的服务监听了, 地址是: `localhost:3000`.
-
-## 获得帮助
-
-请加入: [邮件列表](https://groups.google.com/forum/#!forum/martini-go)
-
-或者可以查看在线演示地址: [演示视频](http://martini.codegangsta.io/#demo)
-
-## 功能列表
-* 使用极其简单.
-* 无侵入式的设计.
-* 很好的与其他的Go语言包协同使用.
-* 超赞的路径匹配和路由.
-* 模块化的设计 - 容易插入功能件，也容易将其拔出来.
-* 已有很多的中间件可以直接使用.
-* 框架内已拥有很好的开箱即用的功能支持.
-* **完全兼容[http.HandlerFunc](http://godoc.org/net/http#HandlerFunc)接口.**
-
-## 更多中间件
-更多的中间件和功能组件, 请查看代码仓库: [martini-contrib](https://github.com/martini-contrib).
-
-## 目录
-* [核心 Martini](#classic-martini)
-  * [处理器](#handlers)
-  * [路由](#routing)
-  * [服务](#services)
-  * [服务静态文件](#serving-static-files)
-* [中间件处理器](#middleware-handlers)
-  * [Next()](#next)
-* [常见问答](#faq)
-
-## 核心 Martini
-为了更快速的启用Martini, [martini.Classic()](http://godoc.org/github.com/codegangsta/martini#Classic) 提供了一些默认的方便Web开发的工具:
-~~~ go
-  m := martini.Classic()
-  // ... middleware and routing goes here
-  m.Run()
-~~~
-
-下面是Martini核心已经包含的功能 [martini.Classic()](http://godoc.org/github.com/codegangsta/martini#Classic):
-  * Request/Response Logging （请求/相应日志） - [martini.Logger](http://godoc.org/github.com/codegangsta/martini#Logger)
-  * Panic Recovery （容错） - [martini.Recovery](http://godoc.org/github.com/codegangsta/martini#Recovery)
-  * Static File serving （静态文件服务） - [martini.Static](http://godoc.org/github.com/codegangsta/martini#Static)
-  * Routing （路由） - [martini.Router](http://godoc.org/github.com/codegangsta/martini#Router)
-
-### 处理器
-处理器是Martini的灵魂和核心所在. 一个处理器基本上可以是任何的函数:
-~~~ go
-m.Get("/", func() {
-  println("hello world")
-})
-~~~
-
-#### 返回值
-当一个处理器返回结果的时候, Martini将会把返回值作为字符串写入到当前的[http.ResponseWriter](http://godoc.org/net/http#ResponseWriter)里面:
-~~~ go
-m.Get("/", func() string {
-  return "hello world" // HTTP 200 : "hello world"
-})
-~~~
-
-另外你也可以选择性的返回多一个状态码:
-~~~ go
-m.Get("/", func() (int, string) {
-  return 418, "i'm a teapot" // HTTP 418 : "i'm a teapot"
-})
-~~~
-
-#### 服务的注入 
-处理器是通过反射来调用的. Martini 通过*Dependency Injection* *（依赖注入）* 来为处理器注入参数列表. **这样使得Martini与Go语言的`http.HandlerFunc`接口完全兼容.** 
-
-如果你加入一个参数到你的处理器, Martini将会搜索它参数列表中的服务，并且通过类型判断来解决依赖关系:
-~~~ go
-m.Get("/", func(res http.ResponseWriter, req *http.Request) { // res 和 req 是通过Martini注入的
-  res.WriteHeader(200) // HTTP 200
-})
-~~~
-
-下面的这些服务已经被包含在核心Martini中: [martini.Classic()](http://godoc.org/github.com/codegangsta/martini#Classic):
-  * [*log.Logger](http://godoc.org/log#Logger) - Martini的全局日志.
-  * [martini.Context](http://godoc.org/github.com/codegangsta/martini#Context) - http request context （请求上下文）.
-  * [martini.Params](http://godoc.org/github.com/codegangsta/martini#Params) - `map[string]string` of named params found by route matching. （名字和参数键值对的参数列表）
-  * [martini.Routes](http://godoc.org/github.com/codegangsta/martini#Routes) - Route helper service. （路由协助处理）
-  * [http.ResponseWriter](http://godoc.org/net/http/#ResponseWriter) - http Response writer interface. (响应结果的流接口)
-  * [*http.Request](http://godoc.org/net/http/#Request) - http Request. （http请求)
-
-### 路由
-在Martini中, 路由是一个HTTP方法配对一个URL匹配模型. 每一个路由可以对应一个或多个处理器方法:
-~~~ go
-m.Get("/", func() {
-  // 显示
-})
-
-m.Patch("/", func() {
-  // 更新
-})
-
-m.Post("/", func() {
-  // 创建
-})
-
-m.Put("/", func() {
-  // 替换
-})
-
-m.Delete("/", func() {
-  // 删除
-})
-
-m.Options("/", func() {
-  // http 选项
-})
-
-m.NotFound(func() {
-  // 处理 404
-})
-~~~
-
-路由匹配的顺序是按照他们被定义的顺序执行的. 最先被定义的路由将会首先被用户请求匹配并调用.
-
-路由模型可能包含参数列表, 可以通过[martini.Params](http://godoc.org/github.com/codegangsta/martini#Params)服务来获取:
-~~~ go
-m.Get("/hello/:name", func(params martini.Params) string {
-  return "Hello " + params["name"]
-})
-~~~
-
-路由匹配可以通过正则表达式或者glob的形式:
-~~~ go
-m.Get("/hello/**", func(params martini.Params) string {
-  return "Hello " + params["_1"]
-})
-~~~
-
-路由处理器可以被相互叠加使用, 例如很有用的地方可以是在验证和授权的时候:
-~~~ go
-m.Get("/secret", authorize, func() {
-  // 该方法将会在authorize方法没有输出结果的时候执行.
-})
-~~~
-
-### 服务
-服务即是被注入到处理器中的参数. 你可以映射一个服务到 *全局* 或者 *请求* 的级别.
-
-
-#### 全局映射
-如果一个Martini实现了inject.Injector的接口, 那么映射成为一个服务就非常简单:
-~~~ go
-db := &MyDatabase{}
-m := martini.Classic()
-m.Map(db) // *MyDatabase 这个服务将可以在所有的处理器中被使用到.
-// ...
-m.Run()
-~~~
-
-#### 请求级别的映射
-映射在请求级别的服务可以用[martini.Context](http://godoc.org/github.com/codegangsta/martini#Context)来完成:
-~~~ go
-func MyCustomLoggerHandler(c martini.Context, req *http.Request) {
-  logger := &MyCustomLogger{req}
-  c.Map(logger) // 映射成为了 *MyCustomLogger
-}
-~~~
-
-#### 映射值到接口
-关于服务最强悍的地方之一就是它能够映射服务到接口. 例如说, 假设你想要覆盖[http.ResponseWriter](http://godoc.org/net/http#ResponseWriter)成为一个对象, 那么你可以封装它并包含你自己的额外操作, 你可以如下这样来编写你的处理器:
-~~~ go
-func WrapResponseWriter(res http.ResponseWriter, c martini.Context) {
-  rw := NewSpecialResponseWriter(res)
-  c.MapTo(rw, (*http.ResponseWriter)(nil)) // 覆盖 ResponseWriter 成为我们封装过的 ResponseWriter
-}
-~~~
-
-### 服务静态文件
-[martini.Classic()](http://godoc.org/github.com/codegangsta/martini#Classic) 默认会服务位于你服务器环境根目录下的"public"文件夹.
-你可以通过加入[martini.Static](http://godoc.org/github.com/codegangsta/martini#Static)的处理器来加入更多的静态文件服务的文件夹.
-~~~ go
-m.Use(martini.Static("assets")) // 也会服务静态文件于"assets"的文件夹
-~~~
-
-## 中间件处理器
-中间件处理器是工作于请求和路由之间的. 本质上来说和Martini其他的处理器没有分别. 你可以像如下这样添加一个中间件处理器到它的堆中:
-~~~ go
-m.Use(func() {
-  // 做一些中间件该做的事情
-})
-~~~
-
-你可以通过`Handlers`函数对中间件堆有完全的控制. 它将会替换掉之前的任何设置过的处理器:
-~~~ go
-m.Handlers(
-  Middleware1,
-  Middleware2,
-  Middleware3,
-)
-~~~
-
-中间件处理器可以非常好处理一些功能，像logging(日志), authorization(授权), authentication(认证), sessions(会话), error pages(错误页面), 以及任何其他的操作需要在http请求发生之前或者之后的:
-
-~~~ go
-// 验证api密匙
-m.Use(func(res http.ResponseWriter, req *http.Request) {
-  if req.Header.Get("X-API-KEY") != "secret123" {
-    res.WriteHeader(http.StatusUnauthorized)
-  }
-})
-~~~
-
-### Next()
-[Context.Next()](http://godoc.org/github.com/codegangsta/martini#Context)是一个可选的函数用于中间件处理器暂时放弃执行直到其他的处理器都执行完毕. 这样就可以很好的处理在http请求完成后需要做的操作.
-~~~ go
-// log 记录请求完成前后  (*译者注: 很巧妙，掌声鼓励.)
-m.Use(func(c martini.Context, log *log.Logger){
-  log.Println("before a request")
-
-  c.Next()
-  
-  log.Println("after a request")
-})
-~~~
-
-## 常见问答
-
-### 我在哪里可以找到中间件资源?
-
-可以查看 [martini-contrib](https://github.com/martini-contrib) 项目. 如果看了觉得没有什么好货色, 可以联系martini-contrib的团队成员为你创建一个新的代码资源库.
-
-* [auth](https://github.com/martini-contrib/auth) - 认证处理器.
-* [binding](https://github.com/martini-contrib/binding) - 映射/验证raw请求到结构体(structure)里的处理器
-* [gzip](https://github.com/martini-contrib/gzip) - 加入giz支持的处理器
-* [render](https://github.com/martini-contrib/render) - 渲染JSON和HTML模板的处理器.
-* [acceptlang](https://github.com/martini-contrib/acceptlang) - 解析`Accept-Language` HTTP报头的处理器.
-* [sessions](https://github.com/martini-contrib/sessions) - 提供会话服务支持的处理器.
-* [strip](https://github.com/martini-contrib/strip) - URL Prefix stripping.
-* [method](https://github.com/martini-contrib/method) - HTTP method overriding via Header or form fields.
-* [secure](https://github.com/martini-contrib/secure) - Implements a few quick security wins.
-* [encoder](https://github.com/martini-contrib/encoder) - Encoder service for rendering data in several formats and content negotiation.
-
-### 我如何整合到我现有的服务器中?
-
-由于Martini实现了 `http.Handler`, 所以它可以很简单的应用到现有Go服务器的子集中. 例如说这是一段在Google App Engine中的示例:
-
-~~~ go
-package hello
-
-import (
-  "net/http"
-  "github.com/codegangsta/martini"
-)
-
-func init() {
-  m := martini.Classic()
-  m.Get("/", func() string {
-    return "Hello world!"
-  })
-  http.Handle("/", m)
-}
-~~~
-
-### 我如何修改port/host?
-
-Martini的`Run`函数会检查PORT和HOST的环境变量并使用它们. 否则Martini将会默认使用localhost:3000
-如果想要自定义PORT和HOST, 使用`http.ListenAndServe`函数来代替.
-
-~~~ go
-  m := martini.Classic()
-  // ...
-  http.ListenAndServe(":8080", m)
-~~~
-
-## 贡献
-Martini项目想要保持简单且干净的代码. 大部分的代码应该贡献到[martini-contrib](https://github.com/martini-contrib)组织中作为一个项目. 如果你想要贡献Martini的核心代码也可以发起一个Pull Request.
-
-## 关于
-
-灵感来自于 [express](https://github.com/visionmedia/express) 和 [sinatra](https://github.com/sinatra/sinatra)
-
-Martini作者 [Code Gangsta](http://codegangsta.io/)
-译者: [Leon](http://github.com/leonli)

Godeps/_workspace/src/github.com/codegangsta/martini/wercker.yml

@@ -1 +0,0 @@
-box: wercker/golang@1.1.1

Godeps/_workspace/src/github.com/golang/groupcache/lru/lru.go

@@ -1,121 +0,0 @@
-/*
-Copyright 2013 Google Inc.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-     http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// Package lru implements an LRU cache.
-package lru
-
-import "container/list"
-
-// Cache is an LRU cache. It is not safe for concurrent access.
-type Cache struct {
-	// MaxEntries is the maximum number of cache entries before
-	// an item is evicted. Zero means no limit.
-	MaxEntries int
-
-	// OnEvicted optionally specificies a callback function to be
-	// executed when an entry is purged from the cache.
-	OnEvicted func(key Key, value interface{})
-
-	ll    *list.List
-	cache map[interface{}]*list.Element
-}
-
-// A Key may be any value that is comparable. See http://golang.org/ref/spec#Comparison_operators
-type Key interface{}
-
-type entry struct {
-	key   Key
-	value interface{}
-}
-
-// New creates a new Cache.
-// If maxEntries is zero, the cache has no limit and it's assumed
-// that eviction is done by the caller.
-func New(maxEntries int) *Cache {
-	return &Cache{
-		MaxEntries: maxEntries,
-		ll:         list.New(),
-		cache:      make(map[interface{}]*list.Element),
-	}
-}
-
-// Add adds a value to the cache.
-func (c *Cache) Add(key Key, value interface{}) {
-	if c.cache == nil {
-		c.cache = make(map[interface{}]*list.Element)
-		c.ll = list.New()
-	}
-	if ee, ok := c.cache[key]; ok {
-		c.ll.MoveToFront(ee)
-		ee.Value.(*entry).value = value
-		return
-	}
-	ele := c.ll.PushFront(&entry{key, value})
-	c.cache[key] = ele
-	if c.MaxEntries != 0 && c.ll.Len() > c.MaxEntries {
-		c.RemoveOldest()
-	}
-}
-
-// Get looks up a key's value from the cache.
-func (c *Cache) Get(key Key) (value interface{}, ok bool) {
-	if c.cache == nil {
-		return
-	}
-	if ele, hit := c.cache[key]; hit {
-		c.ll.MoveToFront(ele)
-		return ele.Value.(*entry).value, true
-	}
-	return
-}
-
-// Remove removes the provided key from the cache.
-func (c *Cache) Remove(key Key) {
-	if c.cache == nil {
-		return
-	}
-	if ele, hit := c.cache[key]; hit {
-		c.removeElement(ele)
-	}
-}
-
-// RemoveOldest removes the oldest item from the cache.
-func (c *Cache) RemoveOldest() {
-	if c.cache == nil {
-		return
-	}
-	ele := c.ll.Back()
-	if ele != nil {
-		c.removeElement(ele)
-	}
-}
-
-func (c *Cache) removeElement(e *list.Element) {
-	c.ll.Remove(e)
-	kv := e.Value.(*entry)
-	delete(c.cache, kv.key)
-	if c.OnEvicted != nil {
-		c.OnEvicted(kv.key, kv.value)
-	}
-}
-
-// Len returns the number of items in the cache.
-func (c *Cache) Len() int {
-	if c.cache == nil {
-		return 0
-	}
-	return c.ll.Len()
-}

Godeps/_workspace/src/github.com/golang/groupcache/lru/lru_test.go

@@ -1,73 +0,0 @@
-/*
-Copyright 2013 Google Inc.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-     http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package lru
-
-import (
-	"testing"
-)
-
-type simpleStruct struct {
-	int
-	string
-}
-
-type complexStruct struct {
-	int
-	simpleStruct
-}
-
-var getTests = []struct {
-	name       string
-	keyToAdd   interface{}
-	keyToGet   interface{}
-	expectedOk bool
-}{
-	{"string_hit", "myKey", "myKey", true},
-	{"string_miss", "myKey", "nonsense", false},
-	{"simple_struct_hit", simpleStruct{1, "two"}, simpleStruct{1, "two"}, true},
-	{"simeple_struct_miss", simpleStruct{1, "two"}, simpleStruct{0, "noway"}, false},
-	{"complex_struct_hit", complexStruct{1, simpleStruct{2, "three"}},
-		complexStruct{1, simpleStruct{2, "three"}}, true},
-}
-
-func TestGet(t *testing.T) {
-	for _, tt := range getTests {
-		lru := New(0)
-		lru.Add(tt.keyToAdd, 1234)
-		val, ok := lru.Get(tt.keyToGet)
-		if ok != tt.expectedOk {
-			t.Fatalf("%s: cache hit = %v; want %v", tt.name, ok, !ok)
-		} else if ok && val != 1234 {
-			t.Fatalf("%s expected get to return 1234 but got %v", tt.name, val)
-		}
-	}
-}
-
-func TestRemove(t *testing.T) {
-	lru := New(0)
-	lru.Add("myKey", 1234)
-	if val, ok := lru.Get("myKey"); !ok {
-		t.Fatal("TestRemove returned no match")
-	} else if val != 1234 {
-		t.Fatalf("TestRemove failed.  Expected %d, got %v", 1234, val)
-	}
-
-	lru.Remove("myKey")
-	if _, ok := lru.Get("myKey"); ok {
-		t.Fatal("TestRemove returned a removed entry")
-	}
-}

Godeps/_workspace/src/github.com/juju/ratelimit/README.md

@@ -42,6 +42,14 @@ NewBucket returns a new token bucket that fills at the rate of one token every
 fillInterval, up to the given maximum capacity. Both arguments must be positive.
 The bucket is initially full.
 
+#### func  NewBucketWithQuantum
+
+```go
+func NewBucketWithQuantum(fillInterval time.Duration, capacity, quantum int64) *Bucket
+```
+NewBucketWithQuantum is similar to NewBucket, but allows the specification of
+the quantum size - quantum tokens are added every fillInterval.
+
 #### func  NewBucketWithRate
 
 ```go

Godeps/_workspace/src/github.com/juju/ratelimit/ratelimit.go

@@ -36,7 +36,7 @@ type Bucket struct {
 // maximum capacity. Both arguments must be
 // positive. The bucket is initially full.
 func NewBucket(fillInterval time.Duration, capacity int64) *Bucket {
-	return newBucketWithQuantum(fillInterval, capacity, 1)
+	return NewBucketWithQuantum(fillInterval, capacity, 1)
 }
 
 // rateMargin specifes the allowed variance of actual
@@ -54,7 +54,7 @@ func NewBucketWithRate(rate float64, capacity int64) *Bucket {
 		if fillInterval <= 0 {
 			continue
 		}
-		tb := newBucketWithQuantum(fillInterval, capacity, quantum)
+		tb := NewBucketWithQuantum(fillInterval, capacity, quantum)
 		if diff := abs(tb.Rate() - rate); diff/rate <= rateMargin {
 			return tb
 		}
@@ -73,11 +73,10 @@ func nextQuantum(q int64) int64 {
 	return q1
 }
 
-// newBucketWithQuantum is similar to NewBucket, but allows
+// NewBucketWithQuantum is similar to NewBucket, but allows
 // the specification of the quantum size - quantum tokens
-// are added every fillInterval. This is so that we can get accurate
-// rates even when we want to add more than one token per ns.
-func newBucketWithQuantum(fillInterval time.Duration, capacity, quantum int64) *Bucket {
+// are added every fillInterval.
+func NewBucketWithQuantum(fillInterval time.Duration, capacity, quantum int64) *Bucket {
 	if fillInterval <= 0 {
 		panic("token bucket fill interval is not > 0")
 	}

Godeps/_workspace/src/github.com/juju/ratelimit/ratelimit_test.go

@@ -273,7 +273,7 @@ func (rateLimitSuite) TestRate(c *gc.C) {
 	if !isCloseTo(tb.Rate(), 0.5, 0.00001) {
 		c.Fatalf("got %v want 0.5", tb.Rate())
 	}
-	tb = newBucketWithQuantum(100*time.Millisecond, 1, 5)
+	tb = NewBucketWithQuantum(100*time.Millisecond, 1, 5)
 	if !isCloseTo(tb.Rate(), 50, 0.00001) {
 		c.Fatalf("got %v want 50", tb.Rate())
 	}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/batch.go

@@ -0,0 +1,216 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+	"encoding/binary"
+	"errors"
+
+	"github.com/syndtr/goleveldb/leveldb/memdb"
+)
+
+var (
+	errBatchTooShort  = errors.New("leveldb: batch is too short")
+	errBatchBadRecord = errors.New("leveldb: bad record in batch")
+)
+
+const kBatchHdrLen = 8 + 4
+
+type batchReplay interface {
+	put(key, value []byte, seq uint64)
+	delete(key []byte, seq uint64)
+}
+
+// Batch is a write batch.
+type Batch struct {
+	buf        []byte
+	rLen, bLen int
+	seq        uint64
+	sync       bool
+}
+
+func (b *Batch) grow(n int) {
+	off := len(b.buf)
+	if off == 0 {
+		// include headers
+		off = kBatchHdrLen
+		n += off
+	}
+	if cap(b.buf)-off >= n {
+		return
+	}
+	buf := make([]byte, 2*cap(b.buf)+n)
+	copy(buf, b.buf)
+	b.buf = buf[:off]
+}
+
+func (b *Batch) appendRec(t vType, key, value []byte) {
+	n := 1 + binary.MaxVarintLen32 + len(key)
+	if t == tVal {
+		n += binary.MaxVarintLen32 + len(value)
+	}
+	b.grow(n)
+	off := len(b.buf)
+	buf := b.buf[:off+n]
+	buf[off] = byte(t)
+	off += 1
+	off += binary.PutUvarint(buf[off:], uint64(len(key)))
+	copy(buf[off:], key)
+	off += len(key)
+	if t == tVal {
+		off += binary.PutUvarint(buf[off:], uint64(len(value)))
+		copy(buf[off:], value)
+		off += len(value)
+	}
+	b.buf = buf[:off]
+	b.rLen++
+	//  Include 8-byte ikey header
+	b.bLen += len(key) + len(value) + 8
+}
+
+// Put appends 'put operation' of the given key/value pair to the batch.
+// It is safe to modify the contents of the argument after Put returns.
+func (b *Batch) Put(key, value []byte) {
+	b.appendRec(tVal, key, value)
+}
+
+// Delete appends 'delete operation' of the given key to the batch.
+// It is safe to modify the contents of the argument after Delete returns.
+func (b *Batch) Delete(key []byte) {
+	b.appendRec(tDel, key, nil)
+}
+
+// Reset resets the batch.
+func (b *Batch) Reset() {
+	b.buf = nil
+	b.seq = 0
+	b.rLen = 0
+	b.bLen = 0
+	b.sync = false
+}
+
+func (b *Batch) init(sync bool) {
+	b.sync = sync
+}
+
+func (b *Batch) put(key, value []byte, seq uint64) {
+	if b.rLen == 0 {
+		b.seq = seq
+	}
+	b.Put(key, value)
+}
+
+func (b *Batch) delete(key []byte, seq uint64) {
+	if b.rLen == 0 {
+		b.seq = seq
+	}
+	b.Delete(key)
+}
+
+func (b *Batch) append(p *Batch) {
+	if p.rLen > 0 {
+		b.grow(len(p.buf) - kBatchHdrLen)
+		b.buf = append(b.buf, p.buf[kBatchHdrLen:]...)
+		b.rLen += p.rLen
+	}
+	if p.sync {
+		b.sync = true
+	}
+}
+
+func (b *Batch) len() int {
+	return b.rLen
+}
+
+func (b *Batch) size() int {
+	return b.bLen
+}
+
+func (b *Batch) encode() []byte {
+	b.grow(0)
+	binary.LittleEndian.PutUint64(b.buf, b.seq)
+	binary.LittleEndian.PutUint32(b.buf[8:], uint32(b.rLen))
+
+	return b.buf
+}
+
+func (b *Batch) decode(buf []byte) error {
+	if len(buf) < kBatchHdrLen {
+		return errBatchTooShort
+	}
+
+	b.seq = binary.LittleEndian.Uint64(buf)
+	b.rLen = int(binary.LittleEndian.Uint32(buf[8:]))
+	// No need to be precise at this point, it won't be used anyway
+	b.bLen = len(buf) - kBatchHdrLen
+	b.buf = buf
+
+	return nil
+}
+
+func (b *Batch) decodeRec(f func(i int, t vType, key, value []byte)) error {
+	off := kBatchHdrLen
+	for i := 0; i < b.rLen; i++ {
+		if off >= len(b.buf) {
+			return errors.New("leveldb: invalid batch record length")
+		}
+
+		t := vType(b.buf[off])
+		if t > tVal {
+			return errors.New("leveldb: invalid batch record type in batch")
+		}
+		off += 1
+
+		x, n := binary.Uvarint(b.buf[off:])
+		off += n
+		if n <= 0 || off+int(x) > len(b.buf) {
+			return errBatchBadRecord
+		}
+		key := b.buf[off : off+int(x)]
+		off += int(x)
+
+		var value []byte
+		if t == tVal {
+			x, n := binary.Uvarint(b.buf[off:])
+			off += n
+			if n <= 0 || off+int(x) > len(b.buf) {
+				return errBatchBadRecord
+			}
+			value = b.buf[off : off+int(x)]
+			off += int(x)
+		}
+
+		f(i, t, key, value)
+	}
+
+	return nil
+}
+
+func (b *Batch) replay(to batchReplay) error {
+	return b.decodeRec(func(i int, t vType, key, value []byte) {
+		switch t {
+		case tVal:
+			to.put(key, value, b.seq+uint64(i))
+		case tDel:
+			to.delete(key, b.seq+uint64(i))
+		}
+	})
+}
+
+func (b *Batch) memReplay(to *memdb.DB) error {
+	return b.decodeRec(func(i int, t vType, key, value []byte) {
+		ikey := newIKey(key, b.seq+uint64(i), t)
+		to.Put(ikey, value)
+	})
+}
+
+func (b *Batch) revertMemReplay(to *memdb.DB) error {
+	return b.decodeRec(func(i int, t vType, key, value []byte) {
+		ikey := newIKey(key, b.seq+uint64(i), t)
+		to.Delete(ikey)
+	})
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/batch_test.go

@@ -0,0 +1,120 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/syndtr/goleveldb/leveldb/comparer"
+	"github.com/syndtr/goleveldb/leveldb/memdb"
+)
+
+type tbRec struct {
+	t          vType
+	key, value []byte
+}
+
+type testBatch struct {
+	rec []*tbRec
+}
+
+func (p *testBatch) put(key, value []byte, seq uint64) {
+	p.rec = append(p.rec, &tbRec{tVal, key, value})
+}
+
+func (p *testBatch) delete(key []byte, seq uint64) {
+	p.rec = append(p.rec, &tbRec{tDel, key, nil})
+}
+
+func compareBatch(t *testing.T, b1, b2 *Batch) {
+	if b1.seq != b2.seq {
+		t.Errorf("invalid seq number want %d, got %d", b1.seq, b2.seq)
+	}
+	if b1.len() != b2.len() {
+		t.Fatalf("invalid record length want %d, got %d", b1.len(), b2.len())
+	}
+	p1, p2 := new(testBatch), new(testBatch)
+	err := b1.replay(p1)
+	if err != nil {
+		t.Fatal("error when replaying batch 1: ", err)
+	}
+	err = b2.replay(p2)
+	if err != nil {
+		t.Fatal("error when replaying batch 2: ", err)
+	}
+	for i := range p1.rec {
+		r1, r2 := p1.rec[i], p2.rec[i]
+		if r1.t != r2.t {
+			t.Errorf("invalid type on record '%d' want %d, got %d", i, r1.t, r2.t)
+		}
+		if !bytes.Equal(r1.key, r2.key) {
+			t.Errorf("invalid key on record '%d' want %s, got %s", i, string(r1.key), string(r2.key))
+		}
+		if r1.t == tVal {
+			if !bytes.Equal(r1.value, r2.value) {
+				t.Errorf("invalid value on record '%d' want %s, got %s", i, string(r1.value), string(r2.value))
+			}
+		}
+	}
+}
+
+func TestBatch_EncodeDecode(t *testing.T) {
+	b1 := new(Batch)
+	b1.seq = 10009
+	b1.Put([]byte("key1"), []byte("value1"))
+	b1.Put([]byte("key2"), []byte("value2"))
+	b1.Delete([]byte("key1"))
+	b1.Put([]byte("k"), []byte(""))
+	b1.Put([]byte("zzzzzzzzzzz"), []byte("zzzzzzzzzzzzzzzzzzzzzzzz"))
+	b1.Delete([]byte("key10000"))
+	b1.Delete([]byte("k"))
+	buf := b1.encode()
+	b2 := new(Batch)
+	err := b2.decode(buf)
+	if err != nil {
+		t.Error("error when decoding batch: ", err)
+	}
+	compareBatch(t, b1, b2)
+}
+
+func TestBatch_Append(t *testing.T) {
+	b1 := new(Batch)
+	b1.seq = 10009
+	b1.Put([]byte("key1"), []byte("value1"))
+	b1.Put([]byte("key2"), []byte("value2"))
+	b1.Delete([]byte("key1"))
+	b1.Put([]byte("foo"), []byte("foovalue"))
+	b1.Put([]byte("bar"), []byte("barvalue"))
+	b2a := new(Batch)
+	b2a.seq = 10009
+	b2a.Put([]byte("key1"), []byte("value1"))
+	b2a.Put([]byte("key2"), []byte("value2"))
+	b2a.Delete([]byte("key1"))
+	b2b := new(Batch)
+	b2b.Put([]byte("foo"), []byte("foovalue"))
+	b2b.Put([]byte("bar"), []byte("barvalue"))
+	b2a.append(b2b)
+	compareBatch(t, b1, b2a)
+}
+
+func TestBatch_Size(t *testing.T) {
+	b := new(Batch)
+	for i := 0; i < 2; i++ {
+		b.Put([]byte("key1"), []byte("value1"))
+		b.Put([]byte("key2"), []byte("value2"))
+		b.Delete([]byte("key1"))
+		b.Put([]byte("foo"), []byte("foovalue"))
+		b.Put([]byte("bar"), []byte("barvalue"))
+		mem := memdb.New(&iComparer{comparer.DefaultComparer}, 0)
+		b.memReplay(mem)
+		if b.size() != mem.Size() {
+			t.Errorf("invalid batch size calculation, want=%d got=%d", mem.Size(), b.size())
+		}
+		b.Reset()
+	}
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/bench_test.go

@@ -0,0 +1,461 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+	"bytes"
+	"fmt"
+	"math/rand"
+	"os"
+	"path/filepath"
+	"runtime"
+	"testing"
+
+	"github.com/syndtr/goleveldb/leveldb/iterator"
+	"github.com/syndtr/goleveldb/leveldb/opt"
+	"github.com/syndtr/goleveldb/leveldb/storage"
+)
+
+func randomString(r *rand.Rand, n int) []byte {
+	b := new(bytes.Buffer)
+	for i := 0; i < n; i++ {
+		b.WriteByte(' ' + byte(r.Intn(95)))
+	}
+	return b.Bytes()
+}
+
+func compressibleStr(r *rand.Rand, frac float32, n int) []byte {
+	nn := int(float32(n) * frac)
+	rb := randomString(r, nn)
+	b := make([]byte, 0, n+nn)
+	for len(b) < n {
+		b = append(b, rb...)
+	}
+	return b[:n]
+}
+
+type valueGen struct {
+	src []byte
+	pos int
+}
+
+func newValueGen(frac float32) *valueGen {
+	v := new(valueGen)
+	r := rand.New(rand.NewSource(301))
+	v.src = make([]byte, 0, 1048576+100)
+	for len(v.src) < 1048576 {
+		v.src = append(v.src, compressibleStr(r, frac, 100)...)
+	}
+	return v
+}
+
+func (v *valueGen) get(n int) []byte {
+	if v.pos+n > len(v.src) {
+		v.pos = 0
+	}
+	v.pos += n
+	return v.src[v.pos-n : v.pos]
+}
+
+var benchDB = filepath.Join(os.TempDir(), fmt.Sprintf("goleveldbbench-%d", os.Getuid()))
+
+type dbBench struct {
+	b    *testing.B
+	stor storage.Storage
+	db   *DB
+
+	o  *opt.Options
+	ro *opt.ReadOptions
+	wo *opt.WriteOptions
+
+	keys, values [][]byte
+}
+
+func openDBBench(b *testing.B, noCompress bool) *dbBench {
+	_, err := os.Stat(benchDB)
+	if err == nil {
+		err = os.RemoveAll(benchDB)
+		if err != nil {
+			b.Fatal("cannot remove old db: ", err)
+		}
+	}
+
+	p := &dbBench{
+		b:  b,
+		o:  &opt.Options{},
+		ro: &opt.ReadOptions{},
+		wo: &opt.WriteOptions{},
+	}
+	p.stor, err = storage.OpenFile(benchDB)
+	if err != nil {
+		b.Fatal("cannot open stor: ", err)
+	}
+	if noCompress {
+		p.o.Compression = opt.NoCompression
+	}
+
+	p.db, err = Open(p.stor, p.o)
+	if err != nil {
+		b.Fatal("cannot open db: ", err)
+	}
+
+	runtime.GOMAXPROCS(runtime.NumCPU())
+	return p
+}
+
+func (p *dbBench) reopen() {
+	p.db.Close()
+	var err error
+	p.db, err = Open(p.stor, p.o)
+	if err != nil {
+		p.b.Fatal("Reopen: got error: ", err)
+	}
+}
+
+func (p *dbBench) populate(n int) {
+	p.keys, p.values = make([][]byte, n), make([][]byte, n)
+	v := newValueGen(0.5)
+	for i := range p.keys {
+		p.keys[i], p.values[i] = []byte(fmt.Sprintf("%016d", i)), v.get(100)
+	}
+}
+
+func (p *dbBench) randomize() {
+	m := len(p.keys)
+	times := m * 2
+	r1, r2 := rand.New(rand.NewSource(0xdeadbeef)), rand.New(rand.NewSource(0xbeefface))
+	for n := 0; n < times; n++ {
+		i, j := r1.Int()%m, r2.Int()%m
+		if i == j {
+			continue
+		}
+		p.keys[i], p.keys[j] = p.keys[j], p.keys[i]
+		p.values[i], p.values[j] = p.values[j], p.values[i]
+	}
+}
+
+func (p *dbBench) writes(perBatch int) {
+	b := p.b
+	db := p.db
+
+	n := len(p.keys)
+	m := n / perBatch
+	if n%perBatch > 0 {
+		m++
+	}
+	batches := make([]Batch, m)
+	j := 0
+	for i := range batches {
+		first := true
+		for ; j < n && ((j+1)%perBatch != 0 || first); j++ {
+			first = false
+			batches[i].Put(p.keys[j], p.values[j])
+		}
+	}
+	runtime.GC()
+
+	b.ResetTimer()
+	b.StartTimer()
+	for i := range batches {
+		err := db.Write(&(batches[i]), p.wo)
+		if err != nil {
+			b.Fatal("write failed: ", err)
+		}
+	}
+	b.StopTimer()
+	b.SetBytes(116)
+}
+
+func (p *dbBench) drop() {
+	p.keys, p.values = nil, nil
+	runtime.GC()
+}
+
+func (p *dbBench) puts() {
+	b := p.b
+	db := p.db
+
+	b.ResetTimer()
+	b.StartTimer()
+	for i := range p.keys {
+		err := db.Put(p.keys[i], p.values[i], p.wo)
+		if err != nil {
+			b.Fatal("put failed: ", err)
+		}
+	}
+	b.StopTimer()
+	b.SetBytes(116)
+}
+
+func (p *dbBench) fill() {
+	b := p.b
+	db := p.db
+
+	perBatch := 10000
+	batch := new(Batch)
+	for i, n := 0, len(p.keys); i < n; {
+		first := true
+		for ; i < n && ((i+1)%perBatch != 0 || first); i++ {
+			first = false
+			batch.Put(p.keys[i], p.values[i])
+		}
+		err := db.Write(batch, p.wo)
+		if err != nil {
+			b.Fatal("write failed: ", err)
+		}
+		batch.Reset()
+	}
+}
+
+func (p *dbBench) gets() {
+	b := p.b
+	db := p.db
+
+	b.ResetTimer()
+	for i := range p.keys {
+		_, err := db.Get(p.keys[i], p.ro)
+		if err != nil {
+			b.Error("got error: ", err)
+		}
+	}
+	b.StopTimer()
+}
+
+func (p *dbBench) seeks() {
+	b := p.b
+
+	iter := p.newIter()
+	defer iter.Release()
+	b.ResetTimer()
+	for i := range p.keys {
+		if !iter.Seek(p.keys[i]) {
+			b.Error("value not found for: ", string(p.keys[i]))
+		}
+	}
+	b.StopTimer()
+}
+
+func (p *dbBench) newIter() iterator.Iterator {
+	iter := p.db.NewIterator(nil, p.ro)
+	err := iter.Error()
+	if err != nil {
+		p.b.Fatal("cannot create iterator: ", err)
+	}
+	return iter
+}
+
+func (p *dbBench) close() {
+	p.db.Close()
+	p.stor.Close()
+	os.RemoveAll(benchDB)
+	p.db = nil
+	p.keys = nil
+	p.values = nil
+	runtime.GC()
+	runtime.GOMAXPROCS(1)
+}
+
+func BenchmarkDBWrite(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.writes(1)
+	p.close()
+}
+
+func BenchmarkDBWriteBatch(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.writes(1000)
+	p.close()
+}
+
+func BenchmarkDBWriteUncompressed(b *testing.B) {
+	p := openDBBench(b, true)
+	p.populate(b.N)
+	p.writes(1)
+	p.close()
+}
+
+func BenchmarkDBWriteBatchUncompressed(b *testing.B) {
+	p := openDBBench(b, true)
+	p.populate(b.N)
+	p.writes(1000)
+	p.close()
+}
+
+func BenchmarkDBWriteRandom(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.randomize()
+	p.writes(1)
+	p.close()
+}
+
+func BenchmarkDBWriteRandomSync(b *testing.B) {
+	p := openDBBench(b, false)
+	p.wo.Sync = true
+	p.populate(b.N)
+	p.writes(1)
+	p.close()
+}
+
+func BenchmarkDBOverwrite(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.writes(1)
+	p.writes(1)
+	p.close()
+}
+
+func BenchmarkDBOverwriteRandom(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.writes(1)
+	p.randomize()
+	p.writes(1)
+	p.close()
+}
+
+func BenchmarkDBPut(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.puts()
+	p.close()
+}
+
+func BenchmarkDBRead(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.fill()
+	p.drop()
+
+	iter := p.newIter()
+	b.ResetTimer()
+	for iter.Next() {
+	}
+	iter.Release()
+	b.StopTimer()
+	b.SetBytes(116)
+	p.close()
+}
+
+func BenchmarkDBReadGC(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.fill()
+
+	iter := p.newIter()
+	b.ResetTimer()
+	for iter.Next() {
+	}
+	iter.Release()
+	b.StopTimer()
+	b.SetBytes(116)
+	p.close()
+}
+
+func BenchmarkDBReadUncompressed(b *testing.B) {
+	p := openDBBench(b, true)
+	p.populate(b.N)
+	p.fill()
+	p.drop()
+
+	iter := p.newIter()
+	b.ResetTimer()
+	for iter.Next() {
+	}
+	iter.Release()
+	b.StopTimer()
+	b.SetBytes(116)
+	p.close()
+}
+
+func BenchmarkDBReadTable(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.fill()
+	p.reopen()
+	p.drop()
+
+	iter := p.newIter()
+	b.ResetTimer()
+	for iter.Next() {
+	}
+	iter.Release()
+	b.StopTimer()
+	b.SetBytes(116)
+	p.close()
+}
+
+func BenchmarkDBReadReverse(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.fill()
+	p.drop()
+
+	iter := p.newIter()
+	b.ResetTimer()
+	iter.Last()
+	for iter.Prev() {
+	}
+	iter.Release()
+	b.StopTimer()
+	b.SetBytes(116)
+	p.close()
+}
+
+func BenchmarkDBReadReverseTable(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.fill()
+	p.reopen()
+	p.drop()
+
+	iter := p.newIter()
+	b.ResetTimer()
+	iter.Last()
+	for iter.Prev() {
+	}
+	iter.Release()
+	b.StopTimer()
+	b.SetBytes(116)
+	p.close()
+}
+
+func BenchmarkDBSeek(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.fill()
+	p.seeks()
+	p.close()
+}
+
+func BenchmarkDBSeekRandom(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.fill()
+	p.randomize()
+	p.seeks()
+	p.close()
+}
+
+func BenchmarkDBGet(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.fill()
+	p.gets()
+	p.close()
+}
+
+func BenchmarkDBGetRandom(b *testing.B) {
+	p := openDBBench(b, false)
+	p.populate(b.N)
+	p.fill()
+	p.randomize()
+	p.gets()
+	p.close()
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/cache/cache.go

@@ -0,0 +1,125 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Package cache provides interface and implementation of a cache algorithms.
+package cache
+
+import (
+	"sync/atomic"
+)
+
+// SetFunc used by Namespace.Get method to create a cache object. SetFunc
+// may return ok false, in that case the cache object will not be created.
+type SetFunc func() (ok bool, value interface{}, charge int, fin SetFin)
+
+// SetFin will be called when corresponding cache object are released.
+type SetFin func()
+
+// DelFin will be called when corresponding cache object are released.
+// DelFin will be called after SetFin. The exist is true if the corresponding
+// cache object is actually exist in the cache tree.
+type DelFin func(exist bool)
+
+// PurgeFin will be called when corresponding cache object are released.
+// PurgeFin will be called after SetFin. If PurgeFin present DelFin will
+// not be executed but passed to the PurgeFin, it is up to the caller
+// to call it or not.
+type PurgeFin func(ns, key uint64, delfin DelFin)
+
+// Cache is a cache tree. A cache instance must be goroutine-safe.
+type Cache interface {
+	// SetCapacity sets cache capacity.
+	SetCapacity(capacity int)
+
+	// GetNamespace gets or creates a cache namespace for the given id.
+	GetNamespace(id uint64) Namespace
+
+	// Purge purges all cache namespaces, read Namespace.Purge method documentation.
+	Purge(fin PurgeFin)
+
+	// Zap zaps all cache namespaces, read Namespace.Zap method documentation.
+	Zap(closed bool)
+}
+
+// Namespace is a cache namespace. A namespace instance must be goroutine-safe.
+type Namespace interface {
+	// Get gets cache object for the given key. The given SetFunc (if not nil) will
+	// be called if the given key does not exist.
+	// If the given key does not exist, SetFunc is nil or SetFunc return ok false, Get
+	// will return ok false.
+	Get(key uint64, setf SetFunc) (obj Object, ok bool)
+
+	// Get deletes cache object for the given key. If exist the cache object will
+	// be deleted later when all of its handles have been released (i.e. no one use
+	// it anymore) and the given DelFin (if not nil) will finally be  executed. If
+	// such cache object does not exist the given DelFin will be executed anyway.
+	//
+	// Delete returns true if such cache object exist.
+	Delete(key uint64, fin DelFin) bool
+
+	// Purge deletes all cache objects, read Delete method documentation.
+	Purge(fin PurgeFin)
+
+	// Zap detaches the namespace from the cache tree and delete all its cache
+	// objects. The cache objects deletion and finalizers execution are happen
+	// immediately, even if its existing handles haven't yet been released.
+	// A zapped namespace can't never be filled again.
+	// If closed is false then the Get function will always call the given SetFunc
+	// if it is not nil, but resultant of the SetFunc will not be cached.
+	Zap(closed bool)
+}
+
+// Object is a cache object.
+type Object interface {
+	// Release releases the cache object. Other methods should not be called
+	// after the cache object has been released.
+	Release()
+
+	// Value returns value of the cache object.
+	Value() interface{}
+}
+
+// Namespace state.
+type nsState int
+
+const (
+	nsEffective nsState = iota
+	nsZapped
+	nsClosed
+)
+
+// Node state.
+type nodeState int
+
+const (
+	nodeEffective nodeState = iota
+	nodeEvicted
+	nodeRemoved
+)
+
+// Fake object.
+type fakeObject struct {
+	value interface{}
+	fin   func()
+	once  uint32
+}
+
+func (o *fakeObject) Value() interface{} {
+	if atomic.LoadUint32(&o.once) == 0 {
+		return o.value
+	}
+	return nil
+}
+
+func (o *fakeObject) Release() {
+	if !atomic.CompareAndSwapUint32(&o.once, 0, 1) {
+		return
+	}
+	if o.fin != nil {
+		o.fin()
+		o.fin = nil
+	}
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/cache/cache_test.go

@@ -0,0 +1,236 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package cache
+
+import (
+	"math/rand"
+	"testing"
+)
+
+func set(ns Namespace, key uint64, value interface{}, charge int, fin func()) Object {
+	obj, _ := ns.Get(key, func() (bool, interface{}, int, SetFin) {
+		return true, value, charge, fin
+	})
+	return obj
+}
+
+func TestCache_HitMiss(t *testing.T) {
+	cases := []struct {
+		key   uint64
+		value string
+	}{
+		{1, "vvvvvvvvv"},
+		{100, "v1"},
+		{0, "v2"},
+		{12346, "v3"},
+		{777, "v4"},
+		{999, "v5"},
+		{7654, "v6"},
+		{2, "v7"},
+		{3, "v8"},
+		{9, "v9"},
+	}
+
+	setfin := 0
+	c := NewLRUCache(1000)
+	ns := c.GetNamespace(0)
+	for i, x := range cases {
+		set(ns, x.key, x.value, len(x.value), func() {
+			setfin++
+		}).Release()
+		for j, y := range cases {
+			r, ok := ns.Get(y.key, nil)
+			if j <= i {
+				// should hit
+				if !ok {
+					t.Errorf("case '%d' iteration '%d' is miss", i, j)
+				} else if r.Value().(string) != y.value {
+					t.Errorf("case '%d' iteration '%d' has invalid value got '%s', want '%s'", i, j, r.Value().(string), y.value)
+				}
+			} else {
+				// should miss
+				if ok {
+					t.Errorf("case '%d' iteration '%d' is hit , value '%s'", i, j, r.Value().(string))
+				}
+			}
+			if ok {
+				r.Release()
+			}
+		}
+	}
+
+	for i, x := range cases {
+		finalizerOk := false
+		ns.Delete(x.key, func(exist bool) {
+			finalizerOk = true
+		})
+
+		if !finalizerOk {
+			t.Errorf("case %d delete finalizer not executed", i)
+		}
+
+		for j, y := range cases {
+			r, ok := ns.Get(y.key, nil)
+			if j > i {
+				// should hit
+				if !ok {
+					t.Errorf("case '%d' iteration '%d' is miss", i, j)
+				} else if r.Value().(string) != y.value {
+					t.Errorf("case '%d' iteration '%d' has invalid value got '%s', want '%s'", i, j, r.Value().(string), y.value)
+				}
+			} else {
+				// should miss
+				if ok {
+					t.Errorf("case '%d' iteration '%d' is hit, value '%s'", i, j, r.Value().(string))
+				}
+			}
+			if ok {
+				r.Release()
+			}
+		}
+	}
+
+	if setfin != len(cases) {
+		t.Errorf("some set finalizer may not be executed, want=%d got=%d", len(cases), setfin)
+	}
+}
+
+func TestLRUCache_Eviction(t *testing.T) {
+	c := NewLRUCache(12)
+	ns := c.GetNamespace(0)
+	o1 := set(ns, 1, 1, 1, nil)
+	set(ns, 2, 2, 1, nil).Release()
+	set(ns, 3, 3, 1, nil).Release()
+	set(ns, 4, 4, 1, nil).Release()
+	set(ns, 5, 5, 1, nil).Release()
+	if r, ok := ns.Get(2, nil); ok { // 1,3,4,5,2
+		r.Release()
+	}
+	set(ns, 9, 9, 10, nil).Release() // 5,2,9
+
+	for _, x := range []uint64{9, 2, 5, 1} {
+		r, ok := ns.Get(x, nil)
+		if !ok {
+			t.Errorf("miss for key '%d'", x)
+		} else {
+			if r.Value().(int) != int(x) {
+				t.Errorf("invalid value for key '%d' want '%d', got '%d'", x, x, r.Value().(int))
+			}
+			r.Release()
+		}
+	}
+	o1.Release()
+	for _, x := range []uint64{1, 2, 5} {
+		r, ok := ns.Get(x, nil)
+		if !ok {
+			t.Errorf("miss for key '%d'", x)
+		} else {
+			if r.Value().(int) != int(x) {
+				t.Errorf("invalid value for key '%d' want '%d', got '%d'", x, x, r.Value().(int))
+			}
+			r.Release()
+		}
+	}
+	for _, x := range []uint64{3, 4, 9} {
+		r, ok := ns.Get(x, nil)
+		if ok {
+			t.Errorf("hit for key '%d'", x)
+			if r.Value().(int) != int(x) {
+				t.Errorf("invalid value for key '%d' want '%d', got '%d'", x, x, r.Value().(int))
+			}
+			r.Release()
+		}
+	}
+}
+
+func TestLRUCache_SetGet(t *testing.T) {
+	c := NewLRUCache(13)
+	ns := c.GetNamespace(0)
+	for i := 0; i < 200; i++ {
+		n := uint64(rand.Intn(99999) % 20)
+		set(ns, n, n, 1, nil).Release()
+		if p, ok := ns.Get(n, nil); ok {
+			if p.Value() == nil {
+				t.Errorf("key '%d' contains nil value", n)
+			} else {
+				got := p.Value().(uint64)
+				if got != n {
+					t.Errorf("invalid value for key '%d' want '%d', got '%d'", n, n, got)
+				}
+			}
+			p.Release()
+		} else {
+			t.Errorf("key '%d' doesn't exist", n)
+		}
+	}
+}
+
+func TestLRUCache_Purge(t *testing.T) {
+	c := NewLRUCache(3)
+	ns1 := c.GetNamespace(0)
+	o1 := set(ns1, 1, 1, 1, nil)
+	o2 := set(ns1, 2, 2, 1, nil)
+	ns1.Purge(nil)
+	set(ns1, 3, 3, 1, nil).Release()
+	for _, x := range []uint64{1, 2, 3} {
+		r, ok := ns1.Get(x, nil)
+		if !ok {
+			t.Errorf("miss for key '%d'", x)
+		} else {
+			if r.Value().(int) != int(x) {
+				t.Errorf("invalid value for key '%d' want '%d', got '%d'", x, x, r.Value().(int))
+			}
+			r.Release()
+		}
+	}
+	o1.Release()
+	o2.Release()
+	for _, x := range []uint64{1, 2} {
+		r, ok := ns1.Get(x, nil)
+		if ok {
+			t.Errorf("hit for key '%d'", x)
+			if r.Value().(int) != int(x) {
+				t.Errorf("invalid value for key '%d' want '%d', got '%d'", x, x, r.Value().(int))
+			}
+			r.Release()
+		}
+	}
+}
+
+func BenchmarkLRUCache_SetRelease(b *testing.B) {
+	capacity := b.N / 100
+	if capacity <= 0 {
+		capacity = 10
+	}
+	c := NewLRUCache(capacity)
+	ns := c.GetNamespace(0)
+	b.ResetTimer()
+	for i := uint64(0); i < uint64(b.N); i++ {
+		set(ns, i, nil, 1, nil).Release()
+	}
+}
+
+func BenchmarkLRUCache_SetReleaseTwice(b *testing.B) {
+	capacity := b.N / 100
+	if capacity <= 0 {
+		capacity = 10
+	}
+	c := NewLRUCache(capacity)
+	ns := c.GetNamespace(0)
+	b.ResetTimer()
+
+	na := b.N / 2
+	nb := b.N - na
+
+	for i := uint64(0); i < uint64(na); i++ {
+		set(ns, i, nil, 1, nil).Release()
+	}
+
+	for i := uint64(0); i < uint64(nb); i++ {
+		set(ns, i, nil, 1, nil).Release()
+	}
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/cache/empty_cache.go

@@ -0,0 +1,246 @@
+// Copyright (c) 2013, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package cache
+
+import (
+	"sync"
+	"sync/atomic"
+)
+
+type emptyCache struct {
+	sync.Mutex
+	table map[uint64]*emptyNS
+}
+
+// NewEmptyCache creates a new initialized empty cache.
+func NewEmptyCache() Cache {
+	return &emptyCache{
+		table: make(map[uint64]*emptyNS),
+	}
+}
+
+func (c *emptyCache) GetNamespace(id uint64) Namespace {
+	c.Lock()
+	defer c.Unlock()
+
+	if ns, ok := c.table[id]; ok {
+		return ns
+	}
+
+	ns := &emptyNS{
+		cache: c,
+		id:    id,
+		table: make(map[uint64]*emptyNode),
+	}
+	c.table[id] = ns
+	return ns
+}
+
+func (c *emptyCache) Purge(fin PurgeFin) {
+	c.Lock()
+	for _, ns := range c.table {
+		ns.purgeNB(fin)
+	}
+	c.Unlock()
+}
+
+func (c *emptyCache) Zap(closed bool) {
+	c.Lock()
+	for _, ns := range c.table {
+		ns.zapNB(closed)
+	}
+	c.table = make(map[uint64]*emptyNS)
+	c.Unlock()
+}
+
+func (*emptyCache) SetCapacity(capacity int) {}
+
+type emptyNS struct {
+	cache *emptyCache
+	id    uint64
+	table map[uint64]*emptyNode
+	state nsState
+}
+
+func (ns *emptyNS) Get(key uint64, setf SetFunc) (o Object, ok bool) {
+	ns.cache.Lock()
+
+	switch ns.state {
+	case nsZapped:
+		ns.cache.Unlock()
+		if setf == nil {
+			return
+		}
+
+		var value interface{}
+		var fin func()
+		ok, value, _, fin = setf()
+		if ok {
+			o = &fakeObject{
+				value: value,
+				fin:   fin,
+			}
+		}
+		return
+	case nsClosed:
+		ns.cache.Unlock()
+		return
+	}
+
+	n, ok := ns.table[key]
+	if ok {
+		n.ref++
+	} else {
+		if setf == nil {
+			ns.cache.Unlock()
+			return
+		}
+
+		var value interface{}
+		var fin func()
+		ok, value, _, fin = setf()
+		if !ok {
+			ns.cache.Unlock()
+			return
+		}
+
+		n = &emptyNode{
+			ns:     ns,
+			key:    key,
+			value:  value,
+			setfin: fin,
+			ref:    1,
+		}
+		ns.table[key] = n
+	}
+
+	ns.cache.Unlock()
+	o = &emptyObject{node: n}
+	return
+}
+
+func (ns *emptyNS) Delete(key uint64, fin DelFin) bool {
+	ns.cache.Lock()
+
+	if ns.state != nsEffective {
+		ns.cache.Unlock()
+		if fin != nil {
+			fin(false)
+		}
+		return false
+	}
+
+	n, ok := ns.table[key]
+	if !ok {
+		ns.cache.Unlock()
+		if fin != nil {
+			fin(false)
+		}
+		return false
+	}
+	n.delfin = fin
+	ns.cache.Unlock()
+	return true
+}
+
+func (ns *emptyNS) purgeNB(fin PurgeFin) {
+	if ns.state != nsEffective {
+		return
+	}
+	for _, n := range ns.table {
+		n.purgefin = fin
+	}
+}
+
+func (ns *emptyNS) Purge(fin PurgeFin) {
+	ns.cache.Lock()
+	ns.purgeNB(fin)
+	ns.cache.Unlock()
+}
+
+func (ns *emptyNS) zapNB(closed bool) {
+	if ns.state != nsEffective {
+		return
+	}
+	for _, n := range ns.table {
+		n.execFin()
+	}
+	if closed {
+		ns.state = nsClosed
+	} else {
+		ns.state = nsZapped
+	}
+	ns.table = nil
+}
+
+func (ns *emptyNS) Zap(closed bool) {
+	ns.cache.Lock()
+	ns.zapNB(closed)
+	delete(ns.cache.table, ns.id)
+	ns.cache.Unlock()
+}
+
+type emptyNode struct {
+	ns       *emptyNS
+	key      uint64
+	value    interface{}
+	ref      int
+	setfin   SetFin
+	delfin   DelFin
+	purgefin PurgeFin
+}
+
+func (n *emptyNode) execFin() {
+	if n.setfin != nil {
+		n.setfin()
+		n.setfin = nil
+	}
+	if n.purgefin != nil {
+		n.purgefin(n.ns.id, n.key, n.delfin)
+		n.delfin = nil
+		n.purgefin = nil
+	} else if n.delfin != nil {
+		n.delfin(true)
+		n.delfin = nil
+	}
+}
+
+func (n *emptyNode) evict() {
+	n.ns.cache.Lock()
+	n.ref--
+	if n.ref == 0 {
+		if n.ns.state == nsEffective {
+			// Remove elem.
+			delete(n.ns.table, n.key)
+			// Execute finalizer.
+			n.execFin()
+		}
+	} else if n.ref < 0 {
+		panic("leveldb/cache: emptyNode: negative node reference")
+	}
+	n.ns.cache.Unlock()
+}
+
+type emptyObject struct {
+	node *emptyNode
+	once uint32
+}
+
+func (o *emptyObject) Value() interface{} {
+	if atomic.LoadUint32(&o.once) == 0 {
+		return o.node.value
+	}
+	return nil
+}
+
+func (o *emptyObject) Release() {
+	if !atomic.CompareAndSwapUint32(&o.once, 0, 1) {
+		return
+	}
+	o.node.evict()
+	o.node = nil
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/cache/lru_cache.go

@@ -0,0 +1,354 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package cache
+
+import (
+	"sync"
+	"sync/atomic"
+)
+
+// lruCache represent a LRU cache state.
+type lruCache struct {
+	sync.Mutex
+
+	recent   lruNode
+	table    map[uint64]*lruNs
+	capacity int
+	size     int
+}
+
+// NewLRUCache creates a new initialized LRU cache with the given capacity.
+func NewLRUCache(capacity int) Cache {
+	c := &lruCache{
+		table:    make(map[uint64]*lruNs),
+		capacity: capacity,
+	}
+	c.recent.rNext = &c.recent
+	c.recent.rPrev = &c.recent
+	return c
+}
+
+// SetCapacity set cache capacity.
+func (c *lruCache) SetCapacity(capacity int) {
+	c.Lock()
+	c.capacity = capacity
+	c.evict()
+	c.Unlock()
+}
+
+// GetNamespace return namespace object for given id.
+func (c *lruCache) GetNamespace(id uint64) Namespace {
+	c.Lock()
+	defer c.Unlock()
+
+	if p, ok := c.table[id]; ok {
+		return p
+	}
+
+	p := &lruNs{
+		lru:   c,
+		id:    id,
+		table: make(map[uint64]*lruNode),
+	}
+	c.table[id] = p
+	return p
+}
+
+// Purge purge entire cache.
+func (c *lruCache) Purge(fin PurgeFin) {
+	c.Lock()
+	for _, ns := range c.table {
+		ns.purgeNB(fin)
+	}
+	c.Unlock()
+}
+
+func (c *lruCache) Zap(closed bool) {
+	c.Lock()
+	for _, ns := range c.table {
+		ns.zapNB(closed)
+	}
+	c.table = make(map[uint64]*lruNs)
+	c.Unlock()
+}
+
+func (c *lruCache) evict() {
+	top := &c.recent
+	for n := c.recent.rPrev; c.size > c.capacity && n != top; {
+		n.state = nodeEvicted
+		n.rRemove()
+		n.evictNB()
+		c.size -= n.charge
+		n = c.recent.rPrev
+	}
+}
+
+type lruNs struct {
+	lru   *lruCache
+	id    uint64
+	table map[uint64]*lruNode
+	state nsState
+}
+
+func (ns *lruNs) Get(key uint64, setf SetFunc) (o Object, ok bool) {
+	lru := ns.lru
+	lru.Lock()
+
+	switch ns.state {
+	case nsZapped:
+		lru.Unlock()
+		if setf == nil {
+			return
+		}
+
+		var value interface{}
+		var fin func()
+		ok, value, _, fin = setf()
+		if ok {
+			o = &fakeObject{
+				value: value,
+				fin:   fin,
+			}
+		}
+		return
+	case nsClosed:
+		lru.Unlock()
+		return
+	}
+
+	n, ok := ns.table[key]
+	if ok {
+		switch n.state {
+		case nodeEvicted:
+			// Insert to recent list.
+			n.state = nodeEffective
+			n.ref++
+			lru.size += n.charge
+			lru.evict()
+			fallthrough
+		case nodeEffective:
+			// Bump to front
+			n.rRemove()
+			n.rInsert(&lru.recent)
+		}
+		n.ref++
+	} else {
+		if setf == nil {
+			lru.Unlock()
+			return
+		}
+
+		var value interface{}
+		var charge int
+		var fin func()
+		ok, value, charge, fin = setf()
+		if !ok {
+			lru.Unlock()
+			return
+		}
+
+		n = &lruNode{
+			ns:     ns,
+			key:    key,
+			value:  value,
+			charge: charge,
+			setfin: fin,
+			ref:    2,
+		}
+		ns.table[key] = n
+		n.rInsert(&lru.recent)
+
+		lru.size += charge
+		lru.evict()
+	}
+
+	lru.Unlock()
+	o = &lruObject{node: n}
+	return
+}
+
+func (ns *lruNs) Delete(key uint64, fin DelFin) bool {
+	lru := ns.lru
+	lru.Lock()
+
+	if ns.state != nsEffective {
+		lru.Unlock()
+		if fin != nil {
+			fin(false)
+		}
+		return false
+	}
+
+	n, ok := ns.table[key]
+	if !ok {
+		lru.Unlock()
+		if fin != nil {
+			fin(false)
+		}
+		return false
+	}
+
+	n.delfin = fin
+	switch n.state {
+	case nodeRemoved:
+		lru.Unlock()
+		return false
+	case nodeEffective:
+		lru.size -= n.charge
+		n.rRemove()
+		n.evictNB()
+	}
+	n.state = nodeRemoved
+
+	lru.Unlock()
+	return true
+}
+
+func (ns *lruNs) purgeNB(fin PurgeFin) {
+	lru := ns.lru
+	if ns.state != nsEffective {
+		return
+	}
+
+	for _, n := range ns.table {
+		n.purgefin = fin
+		if n.state == nodeEffective {
+			lru.size -= n.charge
+			n.rRemove()
+			n.evictNB()
+		}
+		n.state = nodeRemoved
+	}
+}
+
+func (ns *lruNs) Purge(fin PurgeFin) {
+	ns.lru.Lock()
+	ns.purgeNB(fin)
+	ns.lru.Unlock()
+}
+
+func (ns *lruNs) zapNB(closed bool) {
+	lru := ns.lru
+	if ns.state != nsEffective {
+		return
+	}
+
+	if closed {
+		ns.state = nsClosed
+	} else {
+		ns.state = nsZapped
+	}
+	for _, n := range ns.table {
+		if n.state == nodeEffective {
+			lru.size -= n.charge
+			n.rRemove()
+		}
+		n.state = nodeRemoved
+		n.execFin()
+	}
+	ns.table = nil
+}
+
+func (ns *lruNs) Zap(closed bool) {
+	ns.lru.Lock()
+	ns.zapNB(closed)
+	delete(ns.lru.table, ns.id)
+	ns.lru.Unlock()
+}
+
+type lruNode struct {
+	ns *lruNs
+
+	rNext, rPrev *lruNode
+
+	key      uint64
+	value    interface{}
+	charge   int
+	ref      int
+	state    nodeState
+	setfin   SetFin
+	delfin   DelFin
+	purgefin PurgeFin
+}
+
+func (n *lruNode) rInsert(at *lruNode) {
+	x := at.rNext
+	at.rNext = n
+	n.rPrev = at
+	n.rNext = x
+	x.rPrev = n
+}
+
+func (n *lruNode) rRemove() bool {
+	// only remove if not already removed
+	if n.rPrev == nil {
+		return false
+	}
+
+	n.rPrev.rNext = n.rNext
+	n.rNext.rPrev = n.rPrev
+	n.rPrev = nil
+	n.rNext = nil
+
+	return true
+}
+
+func (n *lruNode) execFin() {
+	if n.setfin != nil {
+		n.setfin()
+		n.setfin = nil
+	}
+	if n.purgefin != nil {
+		n.purgefin(n.ns.id, n.key, n.delfin)
+		n.delfin = nil
+		n.purgefin = nil
+	} else if n.delfin != nil {
+		n.delfin(true)
+		n.delfin = nil
+	}
+}
+
+func (n *lruNode) evictNB() {
+	n.ref--
+	if n.ref == 0 {
+		if n.ns.state == nsEffective {
+			// remove elem
+			delete(n.ns.table, n.key)
+			// execute finalizer
+			n.execFin()
+		}
+	} else if n.ref < 0 {
+		panic("leveldb/cache: lruCache: negative node reference")
+	}
+}
+
+func (n *lruNode) evict() {
+	n.ns.lru.Lock()
+	n.evictNB()
+	n.ns.lru.Unlock()
+}
+
+type lruObject struct {
+	node *lruNode
+	once uint32
+}
+
+func (o *lruObject) Value() interface{} {
+	if atomic.LoadUint32(&o.once) == 0 {
+		return o.node.value
+	}
+	return nil
+}
+
+func (o *lruObject) Release() {
+	if !atomic.CompareAndSwapUint32(&o.once, 0, 1) {
+		return
+	}
+
+	o.node.evict()
+	o.node = nil
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/comparer.go

@@ -0,0 +1,75 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import "github.com/syndtr/goleveldb/leveldb/comparer"
+
+type iComparer struct {
+	ucmp comparer.Comparer
+}
+
+func (icmp *iComparer) uName() string {
+	return icmp.ucmp.Name()
+}
+
+func (icmp *iComparer) uCompare(a, b []byte) int {
+	return icmp.ucmp.Compare(a, b)
+}
+
+func (icmp *iComparer) uSeparator(dst, a, b []byte) []byte {
+	return icmp.ucmp.Separator(dst, a, b)
+}
+
+func (icmp *iComparer) uSuccessor(dst, b []byte) []byte {
+	return icmp.ucmp.Successor(dst, b)
+}
+
+func (icmp *iComparer) Name() string {
+	return icmp.uName()
+}
+
+func (icmp *iComparer) Compare(a, b []byte) int {
+	x := icmp.ucmp.Compare(iKey(a).ukey(), iKey(b).ukey())
+	if x == 0 {
+		if m, n := iKey(a).num(), iKey(b).num(); m > n {
+			x = -1
+		} else if m < n {
+			x = 1
+		}
+	}
+	return x
+}
+
+func (icmp *iComparer) Separator(dst, a, b []byte) []byte {
+	ua, ub := iKey(a).ukey(), iKey(b).ukey()
+	dst = icmp.ucmp.Separator(dst, ua, ub)
+	if dst == nil {
+		return nil
+	}
+	if len(dst) < len(ua) && icmp.uCompare(ua, dst) < 0 {
+		dst = append(dst, kMaxNumBytes...)
+	} else {
+		// Did not close possibilities that n maybe longer than len(ub).
+		dst = append(dst, a[len(a)-8:]...)
+	}
+	return dst
+}
+
+func (icmp *iComparer) Successor(dst, b []byte) []byte {
+	ub := iKey(b).ukey()
+	dst = icmp.ucmp.Successor(dst, ub)
+	if dst == nil {
+		return nil
+	}
+	if len(dst) < len(ub) && icmp.uCompare(ub, dst) < 0 {
+		dst = append(dst, kMaxNumBytes...)
+	} else {
+		// Did not close possibilities that n maybe longer than len(ub).
+		dst = append(dst, b[len(b)-8:]...)
+	}
+	return dst
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/comparer/bytes_comparer.go

@@ -0,0 +1,51 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package comparer
+
+import "bytes"
+
+type bytesComparer struct{}
+
+func (bytesComparer) Compare(a, b []byte) int {
+	return bytes.Compare(a, b)
+}
+
+func (bytesComparer) Name() string {
+	return "leveldb.BytewiseComparator"
+}
+
+func (bytesComparer) Separator(dst, a, b []byte) []byte {
+	i, n := 0, len(a)
+	if n > len(b) {
+		n = len(b)
+	}
+	for ; i < n && a[i] == b[i]; i++ {
+	}
+	if i >= n {
+		// Do not shorten if one string is a prefix of the other
+	} else if c := a[i]; c < 0xff && c+1 < b[i] {
+		dst = append(dst, a[:i+1]...)
+		dst[i]++
+		return dst
+	}
+	return nil
+}
+
+func (bytesComparer) Successor(dst, b []byte) []byte {
+	for i, c := range b {
+		if c != 0xff {
+			dst = append(dst, b[:i+1]...)
+			dst[i]++
+			return dst
+		}
+	}
+	return nil
+}
+
+// DefaultComparer are default implementation of the Comparer interface.
+// It uses the natural ordering, consistent with bytes.Compare.
+var DefaultComparer = bytesComparer{}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/comparer/comparer.go

@@ -0,0 +1,57 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Package comparer provides interface and implementation for ordering
+// sets of data.
+package comparer
+
+// BasicComparer is the interface that wraps the basic Compare method.
+type BasicComparer interface {
+	// Compare returns -1, 0, or +1 depending on whether a is 'less than',
+	// 'equal to' or 'greater than' b. The two arguments can only be 'equal'
+	// if their contents are exactly equal. Furthermore, the empty slice
+	// must be 'less than' any non-empty slice.
+	Compare(a, b []byte) int
+}
+
+// Comparer defines a total ordering over the space of []byte keys: a 'less
+// than' relationship.
+type Comparer interface {
+	BasicComparer
+
+	// Name returns name of the comparer.
+	//
+	// The Level-DB on-disk format stores the comparer name, and opening a
+	// database with a different comparer from the one it was created with
+	// will result in an error.
+	//
+	// An implementation to a new name whenever the comparer implementation
+	// changes in a way that will cause the relative ordering of any two keys
+	// to change.
+	//
+	// Names starting with "leveldb." are reserved and should not be used
+	// by any users of this package.
+	Name() string
+
+	// Bellow are advanced functions used used to reduce the space requirements
+	// for internal data structures such as index blocks.
+
+	// Separator appends a sequence of bytes x to dst such that a <= x && x < b,
+	// where 'less than' is consistent with Compare. An implementation should
+	// return nil if x equal to a.
+	//
+	// Either contents of a or b should not by any means modified. Doing so
+	// may cause corruption on the internal state.
+	Separator(dst, a, b []byte) []byte
+
+	// Successor appends a sequence of bytes x to dst such that x >= b, where
+	// 'less than' is consistent with Compare. An implementation should return
+	// nil if x equal to b.
+	//
+	// Contents of b should not by any means modified. Doing so may cause
+	// corruption on the internal state.
+	Successor(dst, b []byte) []byte
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/config.go

@@ -0,0 +1,40 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+const (
+	kNumLevels = 7
+
+	// Level-0 compaction is started when we hit this many files.
+	kL0_CompactionTrigger float64 = 4
+
+	// Soft limit on number of level-0 files.  We slow down writes at this point.
+	kL0_SlowdownWritesTrigger = 8
+
+	// Maximum number of level-0 files.  We stop writes at this point.
+	kL0_StopWritesTrigger = 12
+
+	// Maximum level to which a new compacted memdb is pushed if it
+	// does not create overlap.  We try to push to level 2 to avoid the
+	// relatively expensive level 0=>1 compactions and to avoid some
+	// expensive manifest file operations.  We do not push all the way to
+	// the largest level since that can generate a lot of wasted disk
+	// space if the same key space is being repeatedly overwritten.
+	kMaxMemCompactLevel = 2
+
+	// Maximum size of a table.
+	kMaxTableSize = 2 * 1048576
+
+	// Maximum bytes of overlaps in grandparent (i.e., level+2) before we
+	// stop building a single file in a level->level+1 compaction.
+	kMaxGrandParentOverlapBytes = 10 * kMaxTableSize
+
+	// Maximum number of bytes in all compacted files.  We avoid expanding
+	// the lower level file set of a compaction if it would make the
+	// total compaction cover more than this many bytes.
+	kExpCompactionMaxBytes = 25 * kMaxTableSize
+)

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/corrupt_test.go

@@ -0,0 +1,472 @@
+// Copyright (c) 2013, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"math/rand"
+	"testing"
+
+	"github.com/syndtr/goleveldb/leveldb/cache"
+	"github.com/syndtr/goleveldb/leveldb/opt"
+	"github.com/syndtr/goleveldb/leveldb/storage"
+)
+
+const ctValSize = 1000
+
+type dbCorruptHarness struct {
+	dbHarness
+}
+
+func newDbCorruptHarnessWopt(t *testing.T, o *opt.Options) *dbCorruptHarness {
+	h := new(dbCorruptHarness)
+	h.init(t, o)
+	return h
+}
+
+func newDbCorruptHarness(t *testing.T) *dbCorruptHarness {
+	return newDbCorruptHarnessWopt(t, &opt.Options{
+		BlockCache: cache.NewLRUCache(100),
+		Strict:     opt.StrictJournalChecksum,
+	})
+}
+
+func (h *dbCorruptHarness) recover() {
+	p := &h.dbHarness
+	t := p.t
+
+	var err error
+	p.db, err = Recover(h.stor, h.o)
+	if err != nil {
+		t.Fatal("Repair: got error: ", err)
+	}
+}
+
+func (h *dbCorruptHarness) build(n int) {
+	p := &h.dbHarness
+	t := p.t
+	db := p.db
+
+	batch := new(Batch)
+	for i := 0; i < n; i++ {
+		batch.Reset()
+		batch.Put(tkey(i), tval(i, ctValSize))
+		err := db.Write(batch, p.wo)
+		if err != nil {
+			t.Fatal("write error: ", err)
+		}
+	}
+}
+
+func (h *dbCorruptHarness) buildShuffled(n int, rnd *rand.Rand) {
+	p := &h.dbHarness
+	t := p.t
+	db := p.db
+
+	batch := new(Batch)
+	for i := range rnd.Perm(n) {
+		batch.Reset()
+		batch.Put(tkey(i), tval(i, ctValSize))
+		err := db.Write(batch, p.wo)
+		if err != nil {
+			t.Fatal("write error: ", err)
+		}
+	}
+}
+
+func (h *dbCorruptHarness) deleteRand(n, max int, rnd *rand.Rand) {
+	p := &h.dbHarness
+	t := p.t
+	db := p.db
+
+	batch := new(Batch)
+	for i := 0; i < n; i++ {
+		batch.Reset()
+		batch.Delete(tkey(rnd.Intn(max)))
+		err := db.Write(batch, p.wo)
+		if err != nil {
+			t.Fatal("write error: ", err)
+		}
+	}
+}
+
+func (h *dbCorruptHarness) corrupt(ft storage.FileType, offset, n int) {
+	p := &h.dbHarness
+	t := p.t
+
+	var file storage.File
+	ff, _ := p.stor.GetFiles(ft)
+	for _, f := range ff {
+		if file == nil || f.Num() > file.Num() {
+			file = f
+		}
+	}
+	if file == nil {
+		t.Fatalf("no such file with type %q", ft)
+	}
+
+	r, err := file.Open()
+	if err != nil {
+		t.Fatal("cannot open file: ", err)
+	}
+	x, err := r.Seek(0, 2)
+	if err != nil {
+		t.Fatal("cannot query file size: ", err)
+	}
+	m := int(x)
+	if _, err := r.Seek(0, 0); err != nil {
+		t.Fatal(err)
+	}
+
+	if offset < 0 {
+		if -offset > m {
+			offset = 0
+		} else {
+			offset = m + offset
+		}
+	}
+	if offset > m {
+		offset = m
+	}
+	if offset+n > m {
+		n = m - offset
+	}
+
+	buf := make([]byte, m)
+	_, err = io.ReadFull(r, buf)
+	if err != nil {
+		t.Fatal("cannot read file: ", err)
+	}
+	r.Close()
+
+	for i := 0; i < n; i++ {
+		buf[offset+i] ^= 0x80
+	}
+
+	err = file.Remove()
+	if err != nil {
+		t.Fatal("cannot remove old file: ", err)
+	}
+	w, err := file.Create()
+	if err != nil {
+		t.Fatal("cannot create new file: ", err)
+	}
+	_, err = w.Write(buf)
+	if err != nil {
+		t.Fatal("cannot write new file: ", err)
+	}
+	w.Close()
+}
+
+func (h *dbCorruptHarness) removeAll(ft storage.FileType) {
+	ff, err := h.stor.GetFiles(ft)
+	if err != nil {
+		h.t.Fatal("get files: ", err)
+	}
+	for _, f := range ff {
+		if err := f.Remove(); err != nil {
+			h.t.Error("remove file: ", err)
+		}
+	}
+}
+
+func (h *dbCorruptHarness) removeOne(ft storage.FileType) {
+	ff, err := h.stor.GetFiles(ft)
+	if err != nil {
+		h.t.Fatal("get files: ", err)
+	}
+	f := ff[rand.Intn(len(ff))]
+	h.t.Logf("removing file @%d", f.Num())
+	if err := f.Remove(); err != nil {
+		h.t.Error("remove file: ", err)
+	}
+}
+
+func (h *dbCorruptHarness) check(min, max int) {
+	p := &h.dbHarness
+	t := p.t
+	db := p.db
+
+	var n, badk, badv, missed, good int
+	iter := db.NewIterator(nil, p.ro)
+	for iter.Next() {
+		k := 0
+		fmt.Sscanf(string(iter.Key()), "%d", &k)
+		if k < n {
+			badk++
+			continue
+		}
+		missed += k - n
+		n = k + 1
+		if !bytes.Equal(iter.Value(), tval(k, ctValSize)) {
+			badv++
+		} else {
+			good++
+		}
+	}
+	err := iter.Error()
+	iter.Release()
+	t.Logf("want=%d..%d got=%d badkeys=%d badvalues=%d missed=%d, err=%v",
+		min, max, good, badk, badv, missed, err)
+	if good < min || good > max {
+		t.Errorf("good entries number not in range")
+	}
+}
+
+func TestCorruptDB_Journal(t *testing.T) {
+	h := newDbCorruptHarness(t)
+
+	h.build(100)
+	h.check(100, 100)
+	h.closeDB()
+	h.corrupt(storage.TypeJournal, 19, 1)
+	h.corrupt(storage.TypeJournal, 32*1024+1000, 1)
+
+	h.openDB()
+	h.check(36, 36)
+
+	h.close()
+}
+
+func TestCorruptDB_Table(t *testing.T) {
+	h := newDbCorruptHarness(t)
+
+	h.build(100)
+	h.compactMem()
+	h.compactRangeAt(0, "", "")
+	h.compactRangeAt(1, "", "")
+	h.closeDB()
+	h.corrupt(storage.TypeTable, 100, 1)
+
+	h.openDB()
+	h.check(99, 99)
+
+	h.close()
+}
+
+func TestCorruptDB_TableIndex(t *testing.T) {
+	h := newDbCorruptHarness(t)
+
+	h.build(10000)
+	h.compactMem()
+	h.closeDB()
+	h.corrupt(storage.TypeTable, -2000, 500)
+
+	h.openDB()
+	h.check(5000, 9999)
+
+	h.close()
+}
+
+func TestCorruptDB_MissingManifest(t *testing.T) {
+	rnd := rand.New(rand.NewSource(0x0badda7a))
+	h := newDbCorruptHarnessWopt(t, &opt.Options{
+		BlockCache:  cache.NewLRUCache(100),
+		Strict:      opt.StrictJournalChecksum,
+		WriteBuffer: 1000 * 60,
+	})
+
+	h.build(1000)
+	h.compactMem()
+	h.buildShuffled(1000, rnd)
+	h.compactMem()
+	h.deleteRand(500, 1000, rnd)
+	h.compactMem()
+	h.buildShuffled(1000, rnd)
+	h.compactMem()
+	h.deleteRand(500, 1000, rnd)
+	h.compactMem()
+	h.buildShuffled(1000, rnd)
+	h.compactMem()
+	h.closeDB()
+
+	h.stor.SetIgnoreOpenErr(storage.TypeManifest)
+	h.removeAll(storage.TypeManifest)
+	h.openAssert(false)
+	h.stor.SetIgnoreOpenErr(0)
+
+	h.recover()
+	h.check(1000, 1000)
+	h.build(1000)
+	h.compactMem()
+	h.compactRange("", "")
+	h.closeDB()
+
+	h.recover()
+	h.check(1000, 1000)
+
+	h.close()
+}
+
+func TestCorruptDB_SequenceNumberRecovery(t *testing.T) {
+	h := newDbCorruptHarness(t)
+
+	h.put("foo", "v1")
+	h.put("foo", "v2")
+	h.put("foo", "v3")
+	h.put("foo", "v4")
+	h.put("foo", "v5")
+	h.closeDB()
+
+	h.recover()
+	h.getVal("foo", "v5")
+	h.put("foo", "v6")
+	h.getVal("foo", "v6")
+
+	h.reopenDB()
+	h.getVal("foo", "v6")
+
+	h.close()
+}
+
+func TestCorruptDB_SequenceNumberRecoveryTable(t *testing.T) {
+	h := newDbCorruptHarness(t)
+
+	h.put("foo", "v1")
+	h.put("foo", "v2")
+	h.put("foo", "v3")
+	h.compactMem()
+	h.put("foo", "v4")
+	h.put("foo", "v5")
+	h.compactMem()
+	h.closeDB()
+
+	h.recover()
+	h.getVal("foo", "v5")
+	h.put("foo", "v6")
+	h.getVal("foo", "v6")
+
+	h.reopenDB()
+	h.getVal("foo", "v6")
+
+	h.close()
+}
+
+func TestCorruptDB_CorruptedManifest(t *testing.T) {
+	h := newDbCorruptHarness(t)
+
+	h.put("foo", "hello")
+	h.compactMem()
+	h.compactRange("", "")
+	h.closeDB()
+	h.corrupt(storage.TypeManifest, 0, 1000)
+	h.openAssert(false)
+
+	h.recover()
+	h.getVal("foo", "hello")
+
+	h.close()
+}
+
+func TestCorruptDB_CompactionInputError(t *testing.T) {
+	h := newDbCorruptHarness(t)
+
+	h.build(10)
+	h.compactMem()
+	h.closeDB()
+	h.corrupt(storage.TypeTable, 100, 1)
+
+	h.openDB()
+	h.check(9, 9)
+
+	h.build(10000)
+	h.check(10000, 10000)
+
+	h.close()
+}
+
+func TestCorruptDB_UnrelatedKeys(t *testing.T) {
+	h := newDbCorruptHarness(t)
+
+	h.build(10)
+	h.compactMem()
+	h.closeDB()
+	h.corrupt(storage.TypeTable, 100, 1)
+
+	h.openDB()
+	h.put(string(tkey(1000)), string(tval(1000, ctValSize)))
+	h.getVal(string(tkey(1000)), string(tval(1000, ctValSize)))
+	h.compactMem()
+	h.getVal(string(tkey(1000)), string(tval(1000, ctValSize)))
+
+	h.close()
+}
+
+func TestCorruptDB_Level0NewerFileHasOlderSeqnum(t *testing.T) {
+	h := newDbCorruptHarness(t)
+
+	h.put("a", "v1")
+	h.put("b", "v1")
+	h.compactMem()
+	h.put("a", "v2")
+	h.put("b", "v2")
+	h.compactMem()
+	h.put("a", "v3")
+	h.put("b", "v3")
+	h.compactMem()
+	h.put("c", "v0")
+	h.put("d", "v0")
+	h.compactMem()
+	h.compactRangeAt(1, "", "")
+	h.closeDB()
+
+	h.recover()
+	h.getVal("a", "v3")
+	h.getVal("b", "v3")
+	h.getVal("c", "v0")
+	h.getVal("d", "v0")
+
+	h.close()
+}
+
+func TestCorruptDB_RecoverInvalidSeq_Issue53(t *testing.T) {
+	h := newDbCorruptHarness(t)
+
+	h.put("a", "v1")
+	h.put("b", "v1")
+	h.compactMem()
+	h.put("a", "v2")
+	h.put("b", "v2")
+	h.compactMem()
+	h.put("a", "v3")
+	h.put("b", "v3")
+	h.compactMem()
+	h.put("c", "v0")
+	h.put("d", "v0")
+	h.compactMem()
+	h.compactRangeAt(0, "", "")
+	h.closeDB()
+
+	h.recover()
+	h.getVal("a", "v3")
+	h.getVal("b", "v3")
+	h.getVal("c", "v0")
+	h.getVal("d", "v0")
+
+	h.close()
+}
+
+func TestCorruptDB_MissingTableFiles(t *testing.T) {
+	h := newDbCorruptHarness(t)
+
+	h.put("a", "v1")
+	h.put("b", "v1")
+	h.compactMem()
+	h.put("c", "v2")
+	h.put("d", "v2")
+	h.compactMem()
+	h.put("e", "v3")
+	h.put("f", "v3")
+	h.closeDB()
+
+	h.removeOne(storage.TypeTable)
+	h.openAssert(false)
+
+	h.close()
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/db.go

@@ -0,0 +1,799 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"runtime"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/syndtr/goleveldb/leveldb/iterator"
+	"github.com/syndtr/goleveldb/leveldb/journal"
+	"github.com/syndtr/goleveldb/leveldb/memdb"
+	"github.com/syndtr/goleveldb/leveldb/opt"
+	"github.com/syndtr/goleveldb/leveldb/storage"
+	"github.com/syndtr/goleveldb/leveldb/table"
+	"github.com/syndtr/goleveldb/leveldb/util"
+)
+
+// DB is a LevelDB database.
+type DB struct {
+	// Need 64-bit alignment.
+	seq uint64
+
+	// Session.
+	s *session
+
+	// MemDB.
+	memMu             sync.RWMutex
+	mem               *memdb.DB
+	frozenMem         *memdb.DB
+	journal           *journal.Writer
+	journalWriter     storage.Writer
+	journalFile       storage.File
+	frozenJournalFile storage.File
+	frozenSeq         uint64
+
+	// Snapshot.
+	snapsMu   sync.Mutex
+	snapsRoot snapshotElement
+
+	// Write.
+	writeC       chan *Batch
+	writeMergedC chan bool
+	writeLockC   chan struct{}
+	writeAckC    chan error
+	journalC     chan *Batch
+	journalAckC  chan error
+
+	// Compaction.
+	tcompCmdC     chan cCmd
+	tcompPauseC   chan chan<- struct{}
+	tcompTriggerC chan struct{}
+	mcompCmdC     chan cCmd
+	mcompTriggerC chan struct{}
+	compErrC      chan error
+	compErrSetC   chan error
+	compStats     [kNumLevels]cStats
+
+	// Close.
+	closeW sync.WaitGroup
+	closeC chan struct{}
+	closed uint32
+	closer io.Closer
+}
+
+func openDB(s *session) (*DB, error) {
+	s.log("db@open opening")
+	start := time.Now()
+	db := &DB{
+		s: s,
+		// Initial sequence
+		seq: s.stSeq,
+		// Write
+		writeC:       make(chan *Batch),
+		writeMergedC: make(chan bool),
+		writeLockC:   make(chan struct{}, 1),
+		writeAckC:    make(chan error),
+		journalC:     make(chan *Batch),
+		journalAckC:  make(chan error),
+		// Compaction
+		tcompCmdC:     make(chan cCmd),
+		tcompPauseC:   make(chan chan<- struct{}),
+		tcompTriggerC: make(chan struct{}, 1),
+		mcompCmdC:     make(chan cCmd),
+		mcompTriggerC: make(chan struct{}, 1),
+		compErrC:      make(chan error),
+		compErrSetC:   make(chan error),
+		// Close
+		closeC: make(chan struct{}),
+	}
+	db.initSnapshot()
+
+	if err := db.recoverJournal(); err != nil {
+		return nil, err
+	}
+
+	// Remove any obsolete files.
+	if err := db.checkAndCleanFiles(); err != nil {
+		// Close journal.
+		if db.journal != nil {
+			db.journal.Close()
+			db.journalWriter.Close()
+		}
+		return nil, err
+	}
+
+	// Don't include compaction error goroutine into wait group.
+	go db.compactionError()
+
+	db.closeW.Add(3)
+	go db.tCompaction()
+	go db.mCompaction()
+	go db.jWriter()
+
+	s.logf("db@open done T·%v", time.Since(start))
+
+	runtime.SetFinalizer(db, (*DB).Close)
+	return db, nil
+}
+
+// Open opens or creates a DB for the given storage.
+// The DB will be created if not exist, unless ErrorIfMissing is true.
+// Also, if ErrorIfExist is true and the DB exist Open will returns
+// os.ErrExist error.
+//
+// Open will return an error with type of ErrCorrupted if corruption
+// detected in the DB. Corrupted DB can be recovered with Recover
+// function.
+//
+// The returned DB instance is goroutine-safe.
+// The DB must be closed after use, by calling Close method.
+func Open(stor storage.Storage, o *opt.Options) (db *DB, err error) {
+	s, err := newSession(stor, o)
+	if err != nil {
+		return
+	}
+	defer func() {
+		if err != nil {
+			s.close()
+			s.release()
+		}
+	}()
+
+	err = s.recover()
+	if err != nil {
+		if !os.IsNotExist(err) || s.o.GetErrorIfMissing() {
+			return
+		}
+		err = s.create()
+		if err != nil {
+			return
+		}
+	} else if s.o.GetErrorIfExist() {
+		err = os.ErrExist
+		return
+	}
+
+	return openDB(s)
+}
+
+// OpenFile opens or creates a DB for the given path.
+// The DB will be created if not exist, unless ErrorIfMissing is true.
+// Also, if ErrorIfExist is true and the DB exist OpenFile will returns
+// os.ErrExist error.
+//
+// OpenFile uses standard file-system backed storage implementation as
+// desribed in the leveldb/storage package.
+//
+// OpenFile will return an error with type of ErrCorrupted if corruption
+// detected in the DB. Corrupted DB can be recovered with Recover
+// function.
+//
+// The returned DB instance is goroutine-safe.
+// The DB must be closed after use, by calling Close method.
+func OpenFile(path string, o *opt.Options) (db *DB, err error) {
+	stor, err := storage.OpenFile(path)
+	if err != nil {
+		return
+	}
+	db, err = Open(stor, o)
+	if err != nil {
+		stor.Close()
+	} else {
+		db.closer = stor
+	}
+	return
+}
+
+// Recover recovers and opens a DB with missing or corrupted manifest files
+// for the given storage. It will ignore any manifest files, valid or not.
+// The DB must already exist or it will returns an error.
+// Also, Recover will ignore ErrorIfMissing and ErrorIfExist options.
+//
+// The returned DB instance is goroutine-safe.
+// The DB must be closed after use, by calling Close method.
+func Recover(stor storage.Storage, o *opt.Options) (db *DB, err error) {
+	s, err := newSession(stor, o)
+	if err != nil {
+		return
+	}
+	defer func() {
+		if err != nil {
+			s.close()
+			s.release()
+		}
+	}()
+
+	err = recoverTable(s, o)
+	if err != nil {
+		return
+	}
+	return openDB(s)
+}
+
+// RecoverFile recovers and opens a DB with missing or corrupted manifest files
+// for the given path. It will ignore any manifest files, valid or not.
+// The DB must already exist or it will returns an error.
+// Also, Recover will ignore ErrorIfMissing and ErrorIfExist options.
+//
+// RecoverFile uses standard file-system backed storage implementation as desribed
+// in the leveldb/storage package.
+//
+// The returned DB instance is goroutine-safe.
+// The DB must be closed after use, by calling Close method.
+func RecoverFile(path string, o *opt.Options) (db *DB, err error) {
+	stor, err := storage.OpenFile(path)
+	if err != nil {
+		return
+	}
+	db, err = Recover(stor, o)
+	if err != nil {
+		stor.Close()
+	} else {
+		db.closer = stor
+	}
+	return
+}
+
+func recoverTable(s *session, o *opt.Options) error {
+	// Get all tables and sort it by file number.
+	tableFiles_, err := s.getFiles(storage.TypeTable)
+	if err != nil {
+		return err
+	}
+	tableFiles := files(tableFiles_)
+	tableFiles.sort()
+
+	var mSeq uint64
+	var good, corrupted int
+	rec := new(sessionRecord)
+	buildTable := func(iter iterator.Iterator) (tmp storage.File, size int64, err error) {
+		tmp = s.newTemp()
+		writer, err := tmp.Create()
+		if err != nil {
+			return
+		}
+		defer func() {
+			writer.Close()
+			if err != nil {
+				tmp.Remove()
+				tmp = nil
+			}
+		}()
+
+		// Copy entries.
+		tw := table.NewWriter(writer, o)
+		for iter.Next() {
+			key := iter.Key()
+			if validIkey(key) {
+				err = tw.Append(key, iter.Value())
+				if err != nil {
+					return
+				}
+			}
+		}
+		err = iter.Error()
+		if err != nil {
+			return
+		}
+		err = tw.Close()
+		if err != nil {
+			return
+		}
+		err = writer.Sync()
+		if err != nil {
+			return
+		}
+		size = int64(tw.BytesLen())
+		return
+	}
+	recoverTable := func(file storage.File) error {
+		s.logf("table@recovery recovering @%d", file.Num())
+		reader, err := file.Open()
+		if err != nil {
+			return err
+		}
+		defer reader.Close()
+
+		// Get file size.
+		size, err := reader.Seek(0, 2)
+		if err != nil {
+			return err
+		}
+
+		var tSeq uint64
+		var tgood, tcorrupted, blockerr int
+		var imin, imax []byte
+		tr := table.NewReader(reader, size, nil, o)
+		iter := tr.NewIterator(nil, nil)
+		iter.(iterator.ErrorCallbackSetter).SetErrorCallback(func(err error) {
+			s.logf("table@recovery found error @%d %q", file.Num(), err)
+			blockerr++
+		})
+
+		// Scan the table.
+		for iter.Next() {
+			key := iter.Key()
+			_, seq, _, ok := parseIkey(key)
+			if !ok {
+				tcorrupted++
+				continue
+			}
+			tgood++
+			if seq > tSeq {
+				tSeq = seq
+			}
+			if imin == nil {
+				imin = append([]byte{}, key...)
+			}
+			imax = append(imax[:0], key...)
+		}
+		if err := iter.Error(); err != nil {
+			iter.Release()
+			return err
+		}
+		iter.Release()
+
+		if tgood > 0 {
+			if tcorrupted > 0 || blockerr > 0 {
+				// Rebuild the table.
+				s.logf("table@recovery rebuilding @%d", file.Num())
+				iter := tr.NewIterator(nil, nil)
+				tmp, newSize, err := buildTable(iter)
+				iter.Release()
+				if err != nil {
+					return err
+				}
+				reader.Close()
+				if err := file.Replace(tmp); err != nil {
+					return err
+				}
+				size = newSize
+			}
+			if tSeq > mSeq {
+				mSeq = tSeq
+			}
+			// Add table to level 0.
+			rec.addTable(0, file.Num(), uint64(size), imin, imax)
+			s.logf("table@recovery recovered @%d N·%d C·%d B·%d S·%d Q·%d", file.Num(), tgood, tcorrupted, blockerr, size, tSeq)
+		} else {
+			s.logf("table@recovery unrecoverable @%d C·%d B·%d S·%d", file.Num(), tcorrupted, blockerr, size)
+		}
+
+		good += tgood
+		corrupted += tcorrupted
+
+		return nil
+	}
+
+	// Recover all tables.
+	if len(tableFiles) > 0 {
+		s.logf("table@recovery F·%d", len(tableFiles))
+
+		// Mark file number as used.
+		s.markFileNum(tableFiles[len(tableFiles)-1].Num())
+
+		for _, file := range tableFiles {
+			if err := recoverTable(file); err != nil {
+				return err
+			}
+		}
+
+		s.logf("table@recovery recovered F·%d N·%d C·%d Q·%d", len(tableFiles), good, corrupted, mSeq)
+	}
+
+	// Set sequence number.
+	rec.setSeq(mSeq + 1)
+
+	// Create new manifest.
+	if err := s.create(); err != nil {
+		return err
+	}
+
+	// Commit.
+	return s.commit(rec)
+}
+
+func (db *DB) recoverJournal() error {
+	// Get all tables and sort it by file number.
+	journalFiles_, err := db.s.getFiles(storage.TypeJournal)
+	if err != nil {
+		return err
+	}
+	journalFiles := files(journalFiles_)
+	journalFiles.sort()
+
+	// Discard older journal.
+	prev := -1
+	for i, file := range journalFiles {
+		if file.Num() >= db.s.stJournalNum {
+			if prev >= 0 {
+				i--
+				journalFiles[i] = journalFiles[prev]
+			}
+			journalFiles = journalFiles[i:]
+			break
+		} else if file.Num() == db.s.stPrevJournalNum {
+			prev = i
+		}
+	}
+
+	var jr *journal.Reader
+	var of storage.File
+	var mem *memdb.DB
+	batch := new(Batch)
+	cm := newCMem(db.s)
+	buf := new(util.Buffer)
+	// Options.
+	strict := db.s.o.GetStrict(opt.StrictJournal)
+	checksum := db.s.o.GetStrict(opt.StrictJournalChecksum)
+	writeBuffer := db.s.o.GetWriteBuffer()
+	recoverJournal := func(file storage.File) error {
+		db.logf("journal@recovery recovering @%d", file.Num())
+		reader, err := file.Open()
+		if err != nil {
+			return err
+		}
+		defer reader.Close()
+
+		// Create/reset journal reader instance.
+		if jr == nil {
+			jr = journal.NewReader(reader, dropper{db.s, file}, strict, checksum)
+		} else {
+			jr.Reset(reader, dropper{db.s, file}, strict, checksum)
+		}
+
+		// Flush memdb and remove obsolete journal file.
+		if of != nil {
+			if mem.Len() > 0 {
+				if err := cm.flush(mem, 0); err != nil {
+					return err
+				}
+			}
+			if err := cm.commit(file.Num(), db.seq); err != nil {
+				return err
+			}
+			cm.reset()
+			of.Remove()
+			of = nil
+		}
+
+		// Replay journal to memdb.
+		mem.Reset()
+		for {
+			r, err := jr.Next()
+			if err != nil {
+				if err == io.EOF {
+					break
+				}
+				return err
+			}
+
+			buf.Reset()
+			if _, err := buf.ReadFrom(r); err != nil {
+				if strict {
+					return err
+				}
+				continue
+			}
+			if err := batch.decode(buf.Bytes()); err != nil {
+				return err
+			}
+			if err := batch.memReplay(mem); err != nil {
+				return err
+			}
+
+			// Save sequence number.
+			db.seq = batch.seq + uint64(batch.len())
+
+			// Flush it if large enough.
+			if mem.Size() >= writeBuffer {
+				if err := cm.flush(mem, 0); err != nil {
+					return err
+				}
+				mem.Reset()
+			}
+		}
+
+		of = file
+		return nil
+	}
+
+	// Recover all journals.
+	if len(journalFiles) > 0 {
+		db.logf("journal@recovery F·%d", len(journalFiles))
+
+		// Mark file number as used.
+		db.s.markFileNum(journalFiles[len(journalFiles)-1].Num())
+
+		mem = memdb.New(db.s.icmp, writeBuffer)
+		for _, file := range journalFiles {
+			if err := recoverJournal(file); err != nil {
+				return err
+			}
+		}
+
+		// Flush the last journal.
+		if mem.Len() > 0 {
+			if err := cm.flush(mem, 0); err != nil {
+				return err
+			}
+		}
+	}
+
+	// Create a new journal.
+	if _, err := db.newMem(0); err != nil {
+		return err
+	}
+
+	// Commit.
+	if err := cm.commit(db.journalFile.Num(), db.seq); err != nil {
+		// Close journal.
+		if db.journal != nil {
+			db.journal.Close()
+			db.journalWriter.Close()
+		}
+		return err
+	}
+
+	// Remove the last obsolete journal file.
+	if of != nil {
+		of.Remove()
+	}
+
+	return nil
+}
+
+func (db *DB) get(key []byte, seq uint64, ro *opt.ReadOptions) (value []byte, err error) {
+	ikey := newIKey(key, seq, tSeek)
+
+	em, fm := db.getMems()
+	for _, m := range [...]*memdb.DB{em, fm} {
+		if m == nil {
+			continue
+		}
+
+		mk, mv, me := m.Find(ikey)
+		if me == nil {
+			ukey, _, t, ok := parseIkey(mk)
+			if ok && db.s.icmp.uCompare(ukey, key) == 0 {
+				if t == tDel {
+					return nil, ErrNotFound
+				}
+				return mv, nil
+			}
+		} else if me != ErrNotFound {
+			return nil, me
+		}
+	}
+
+	v := db.s.version()
+	value, cSched, err := v.get(ikey, ro)
+	v.release()
+	if cSched {
+		// Trigger table compaction.
+		db.compTrigger(db.tcompTriggerC)
+	}
+	return
+}
+
+// Get gets the value for the given key. It returns ErrNotFound if the
+// DB does not contain the key.
+//
+// The caller should not modify the contents of the returned slice, but
+// it is safe to modify the contents of the argument after Get returns.
+func (db *DB) Get(key []byte, ro *opt.ReadOptions) (value []byte, err error) {
+	err = db.ok()
+	if err != nil {
+		return
+	}
+
+	return db.get(key, db.getSeq(), ro)
+}
+
+// NewIterator returns an iterator for the latest snapshot of the
+// uderlying DB.
+// The returned iterator is not goroutine-safe, but it is safe to use
+// multiple iterators concurrently, with each in a dedicated goroutine.
+// It is also safe to use an iterator concurrently with modifying its
+// underlying DB. The resultant key/value pairs are guaranteed to be
+// consistent.
+//
+// Slice allows slicing the iterator to only contains keys in the given
+// range. A nil Range.Start is treated as a key before all keys in the
+// DB. And a nil Range.Limit is treated as a key after all keys in
+// the DB.
+//
+// The iterator must be released after use, by calling Release method.
+//
+// Also read Iterator documentation of the leveldb/iterator package.
+func (db *DB) NewIterator(slice *util.Range, ro *opt.ReadOptions) iterator.Iterator {
+	if err := db.ok(); err != nil {
+		return iterator.NewEmptyIterator(err)
+	}
+
+	snap := db.newSnapshot()
+	defer snap.Release()
+	return snap.NewIterator(slice, ro)
+}
+
+// GetSnapshot returns a latest snapshot of the underlying DB. A snapshot
+// is a frozen snapshot of a DB state at a particular point in time. The
+// content of snapshot are guaranteed to be consistent.
+//
+// The snapshot must be released after use, by calling Release method.
+func (db *DB) GetSnapshot() (*Snapshot, error) {
+	if err := db.ok(); err != nil {
+		return nil, err
+	}
+
+	return db.newSnapshot(), nil
+}
+
+// GetProperty returns value of the given property name.
+//
+// Property names:
+//	leveldb.num-files-at-level{n}
+//		Returns the number of filer at level 'n'.
+//	leveldb.stats
+//		Returns statistics of the underlying DB.
+//	leveldb.sstables
+//		Returns sstables list for each level.
+func (db *DB) GetProperty(name string) (value string, err error) {
+	err = db.ok()
+	if err != nil {
+		return
+	}
+
+	const prefix = "leveldb."
+	if !strings.HasPrefix(name, prefix) {
+		return "", errors.New("leveldb: GetProperty: unknown property: " + name)
+	}
+	p := name[len(prefix):]
+
+	v := db.s.version()
+	defer v.release()
+
+	switch {
+	case strings.HasPrefix(p, "num-files-at-level"):
+		var level uint
+		var rest string
+		n, _ := fmt.Scanf("%d%s", &level, &rest)
+		if n != 1 || level >= kNumLevels {
+			err = errors.New("leveldb: GetProperty: invalid property: " + name)
+		} else {
+			value = fmt.Sprint(v.tLen(int(level)))
+		}
+	case p == "stats":
+		value = "Compactions\n" +
+			" Level |   Tables   |    Size(MB)   |    Time(sec)  |    Read(MB)   |   Write(MB)\n" +
+			"-------+------------+---------------+---------------+---------------+---------------\n"
+		for level, tables := range v.tables {
+			duration, read, write := db.compStats[level].get()
+			if len(tables) == 0 && duration == 0 {
+				continue
+			}
+			value += fmt.Sprintf(" %3d   | %10d | %13.5f | %13.5f | %13.5f | %13.5f\n",
+				level, len(tables), float64(tables.size())/1048576.0, duration.Seconds(),
+				float64(read)/1048576.0, float64(write)/1048576.0)
+		}
+	case p == "sstables":
+		for level, tables := range v.tables {
+			value += fmt.Sprintf("--- level %d ---\n", level)
+			for _, t := range tables {
+				value += fmt.Sprintf("%d:%d[%q .. %q]\n", t.file.Num(), t.size, t.imin, t.imax)
+			}
+		}
+	default:
+		err = errors.New("leveldb: GetProperty: unknown property: " + name)
+	}
+
+	return
+}
+
+// SizeOf calculates approximate sizes of the given key ranges.
+// The length of the returned sizes are equal with the length of the given
+// ranges. The returned sizes measure storage space usage, so if the user
+// data compresses by a factor of ten, the returned sizes will be one-tenth
+// the size of the corresponding user data size.
+// The results may not include the sizes of recently written data.
+func (db *DB) SizeOf(ranges []util.Range) (Sizes, error) {
+	if err := db.ok(); err != nil {
+		return nil, err
+	}
+
+	v := db.s.version()
+	defer v.release()
+
+	sizes := make(Sizes, 0, len(ranges))
+	for _, r := range ranges {
+		imin := newIKey(r.Start, kMaxSeq, tSeek)
+		imax := newIKey(r.Limit, kMaxSeq, tSeek)
+		start, err := v.offsetOf(imin)
+		if err != nil {
+			return nil, err
+		}
+		limit, err := v.offsetOf(imax)
+		if err != nil {
+			return nil, err
+		}
+		var size uint64
+		if limit >= start {
+			size = limit - start
+		}
+		sizes = append(sizes, size)
+	}
+
+	return sizes, nil
+}
+
+// Close closes the DB. This will also releases any outstanding snapshot and
+// abort any in-flight compaction.
+//
+// It is not safe to close a DB until all outstanding iterators are released.
+// It is valid to call Close multiple times. Other methods should not be
+// called after the DB has been closed.
+func (db *DB) Close() error {
+	if !db.setClosed() {
+		return ErrClosed
+	}
+
+	start := time.Now()
+	db.log("db@close closing")
+
+	// Clear the finalizer.
+	runtime.SetFinalizer(db, nil)
+
+	// Get compaction error.
+	var err error
+	select {
+	case err = <-db.compErrC:
+	default:
+	}
+
+	close(db.closeC)
+
+	// Wait for the close WaitGroup.
+	db.closeW.Wait()
+
+	// Close journal.
+	db.writeLockC <- struct{}{}
+	if db.journal != nil {
+		db.journal.Close()
+		db.journalWriter.Close()
+	}
+
+	// Close session.
+	db.s.close()
+	db.logf("db@close done T·%v", time.Since(start))
+	db.s.release()
+
+	if db.closer != nil {
+		if err1 := db.closer.Close(); err == nil {
+			err = err1
+		}
+	}
+
+	// NIL'ing pointers.
+	db.s = nil
+	db.mem = nil
+	db.frozenMem = nil
+	db.journal = nil
+	db.journalWriter = nil
+	db.journalFile = nil
+	db.frozenJournalFile = nil
+	db.snapsRoot = snapshotElement{}
+	db.closer = nil
+
+	return err
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/db_compaction.go

@@ -0,0 +1,688 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+	"errors"
+	"sync"
+	"time"
+
+	"github.com/syndtr/goleveldb/leveldb/memdb"
+)
+
+var (
+	errCompactionTransactExiting = errors.New("leveldb: compaction transact exiting")
+)
+
+type cStats struct {
+	sync.Mutex
+	duration time.Duration
+	read     uint64
+	write    uint64
+}
+
+func (p *cStats) add(n *cStatsStaging) {
+	p.Lock()
+	p.duration += n.duration
+	p.read += n.read
+	p.write += n.write
+	p.Unlock()
+}
+
+func (p *cStats) get() (duration time.Duration, read, write uint64) {
+	p.Lock()
+	defer p.Unlock()
+	return p.duration, p.read, p.write
+}
+
+type cStatsStaging struct {
+	start    time.Time
+	duration time.Duration
+	on       bool
+	read     uint64
+	write    uint64
+}
+
+func (p *cStatsStaging) startTimer() {
+	if !p.on {
+		p.start = time.Now()
+		p.on = true
+	}
+}
+
+func (p *cStatsStaging) stopTimer() {
+	if p.on {
+		p.duration += time.Since(p.start)
+		p.on = false
+	}
+}
+
+type cMem struct {
+	s     *session
+	level int
+	rec   *sessionRecord
+}
+
+func newCMem(s *session) *cMem {
+	return &cMem{s: s, rec: new(sessionRecord)}
+}
+
+func (c *cMem) flush(mem *memdb.DB, level int) error {
+	s := c.s
+
+	// Write memdb to table.
+	iter := mem.NewIterator(nil)
+	defer iter.Release()
+	t, n, err := s.tops.createFrom(iter)
+	if err != nil {
+		return err
+	}
+
+	// Pick level.
+	if level < 0 {
+		level = s.version_NB().pickLevel(t.imin.ukey(), t.imax.ukey())
+	}
+	c.rec.addTableFile(level, t)
+
+	s.logf("mem@flush created L%d@%d N·%d S·%s %q:%q", level, t.file.Num(), n, shortenb(int(t.size)), t.imin, t.imax)
+
+	c.level = level
+	return nil
+}
+
+func (c *cMem) reset() {
+	c.rec = new(sessionRecord)
+}
+
+func (c *cMem) commit(journal, seq uint64) error {
+	c.rec.setJournalNum(journal)
+	c.rec.setSeq(seq)
+
+	// Commit changes.
+	return c.s.commit(c.rec)
+}
+
+func (db *DB) compactionError() {
+	var err error
+noerr:
+	for {
+		select {
+		case err = <-db.compErrSetC:
+			if err != nil {
+				goto haserr
+			}
+		case _, _ = <-db.closeC:
+			return
+		}
+	}
+haserr:
+	for {
+		select {
+		case db.compErrC <- err:
+		case err = <-db.compErrSetC:
+			if err == nil {
+				goto noerr
+			}
+		case _, _ = <-db.closeC:
+			return
+		}
+	}
+}
+
+type compactionTransactCounter int
+
+func (cnt *compactionTransactCounter) incr() {
+	*cnt++
+}
+
+func (db *DB) compactionTransact(name string, exec func(cnt *compactionTransactCounter) error, rollback func() error) {
+	defer func() {
+		if x := recover(); x != nil {
+			if x == errCompactionTransactExiting && rollback != nil {
+				if err := rollback(); err != nil {
+					db.logf("%s rollback error %q", name, err)
+				}
+			}
+			panic(x)
+		}
+	}()
+
+	const (
+		backoffMin = 1 * time.Second
+		backoffMax = 8 * time.Second
+		backoffMul = 2 * time.Second
+	)
+	backoff := backoffMin
+	backoffT := time.NewTimer(backoff)
+	lastCnt := compactionTransactCounter(0)
+	for n := 0; ; n++ {
+		// Check wether the DB is closed.
+		if db.isClosed() {
+			db.logf("%s exiting", name)
+			db.compactionExitTransact()
+		} else if n > 0 {
+			db.logf("%s retrying N·%d", name, n)
+		}
+
+		// Execute.
+		cnt := compactionTransactCounter(0)
+		err := exec(&cnt)
+
+		// Set compaction error status.
+		select {
+		case db.compErrSetC <- err:
+		case _, _ = <-db.closeC:
+			db.logf("%s exiting", name)
+			db.compactionExitTransact()
+		}
+		if err == nil {
+			return
+		}
+		db.logf("%s error I·%d %q", name, cnt, err)
+
+		// Reset backoff duration if counter is advancing.
+		if cnt > lastCnt {
+			backoff = backoffMin
+			lastCnt = cnt
+		}
+
+		// Backoff.
+		backoffT.Reset(backoff)
+		if backoff < backoffMax {
+			backoff *= backoffMul
+			if backoff > backoffMax {
+				backoff = backoffMax
+			}
+		}
+		select {
+		case <-backoffT.C:
+		case _, _ = <-db.closeC:
+			db.logf("%s exiting", name)
+			db.compactionExitTransact()
+		}
+	}
+}
+
+func (db *DB) compactionExitTransact() {
+	panic(errCompactionTransactExiting)
+}
+
+func (db *DB) memCompaction() {
+	mem := db.getFrozenMem()
+	if mem == nil {
+		return
+	}
+
+	c := newCMem(db.s)
+	stats := new(cStatsStaging)
+
+	db.logf("mem@flush N·%d S·%s", mem.Len(), shortenb(mem.Size()))
+
+	// Don't compact empty memdb.
+	if mem.Len() == 0 {
+		db.logf("mem@flush skipping")
+		// drop frozen mem
+		db.dropFrozenMem()
+		return
+	}
+
+	// Pause table compaction.
+	ch := make(chan struct{})
+	select {
+	case db.tcompPauseC <- (chan<- struct{})(ch):
+	case _, _ = <-db.closeC:
+		return
+	}
+
+	db.compactionTransact("mem@flush", func(cnt *compactionTransactCounter) (err error) {
+		stats.startTimer()
+		defer stats.stopTimer()
+		return c.flush(mem, -1)
+	}, func() error {
+		for _, r := range c.rec.addedTables {
+			db.logf("mem@flush rollback @%d", r.num)
+			f := db.s.getTableFile(r.num)
+			if err := f.Remove(); err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+
+	db.compactionTransact("mem@commit", func(cnt *compactionTransactCounter) (err error) {
+		stats.startTimer()
+		defer stats.stopTimer()
+		return c.commit(db.journalFile.Num(), db.frozenSeq)
+	}, nil)
+
+	db.logf("mem@flush commited F·%d T·%v", len(c.rec.addedTables), stats.duration)
+
+	for _, r := range c.rec.addedTables {
+		stats.write += r.size
+	}
+	db.compStats[c.level].add(stats)
+
+	// Drop frozen mem.
+	db.dropFrozenMem()
+
+	// Resume table compaction.
+	select {
+	case <-ch:
+	case _, _ = <-db.closeC:
+		return
+	}
+
+	// Trigger table compaction.
+	db.compTrigger(db.mcompTriggerC)
+}
+
+func (db *DB) tableCompaction(c *compaction, noTrivial bool) {
+	rec := new(sessionRecord)
+	rec.addCompactionPointer(c.level, c.imax)
+
+	if !noTrivial && c.trivial() {
+		t := c.tables[0][0]
+		db.logf("table@move L%d@%d -> L%d", c.level, t.file.Num(), c.level+1)
+		rec.deleteTable(c.level, t.file.Num())
+		rec.addTableFile(c.level+1, t)
+		db.compactionTransact("table@move", func(cnt *compactionTransactCounter) (err error) {
+			return db.s.commit(rec)
+		}, nil)
+		return
+	}
+
+	var stats [2]cStatsStaging
+	for i, tables := range c.tables {
+		for _, t := range tables {
+			stats[i].read += t.size
+			// Insert deleted tables into record
+			rec.deleteTable(c.level+i, t.file.Num())
+		}
+	}
+	sourceSize := int(stats[0].read + stats[1].read)
+	minSeq := db.minSeq()
+	db.logf("table@compaction L%d·%d -> L%d·%d S·%s Q·%d", c.level, len(c.tables[0]), c.level+1, len(c.tables[1]), shortenb(sourceSize), minSeq)
+
+	var snapUkey []byte
+	var snapHasUkey bool
+	var snapSeq uint64
+	var snapIter int
+	var snapDropCnt int
+	var dropCnt int
+	db.compactionTransact("table@build", func(cnt *compactionTransactCounter) (err error) {
+		ukey := append([]byte{}, snapUkey...)
+		hasUkey := snapHasUkey
+		lseq := snapSeq
+		dropCnt = snapDropCnt
+		snapSched := snapIter == 0
+
+		var tw *tWriter
+		finish := func() error {
+			t, err := tw.finish()
+			if err != nil {
+				return err
+			}
+			rec.addTableFile(c.level+1, t)
+			stats[1].write += t.size
+			db.logf("table@build created L%d@%d N·%d S·%s %q:%q", c.level+1, t.file.Num(), tw.tw.EntriesLen(), shortenb(int(t.size)), t.imin, t.imax)
+			return nil
+		}
+
+		defer func() {
+			stats[1].stopTimer()
+			if tw != nil {
+				tw.drop()
+				tw = nil
+			}
+		}()
+
+		stats[1].startTimer()
+		iter := c.newIterator()
+		defer iter.Release()
+		for i := 0; iter.Next(); i++ {
+			// Incr transact counter.
+			cnt.incr()
+
+			// Skip until last state.
+			if i < snapIter {
+				continue
+			}
+
+			ikey := iKey(iter.Key())
+
+			if c.shouldStopBefore(ikey) && tw != nil {
+				err = finish()
+				if err != nil {
+					return
+				}
+				snapSched = true
+				tw = nil
+			}
+
+			// Scheduled for snapshot, snapshot will used to retry compaction
+			// if error occured.
+			if snapSched {
+				snapUkey = append(snapUkey[:0], ukey...)
+				snapHasUkey = hasUkey
+				snapSeq = lseq
+				snapIter = i
+				snapDropCnt = dropCnt
+				snapSched = false
+			}
+
+			if seq, vt, ok := ikey.parseNum(); !ok {
+				// Don't drop error keys
+				ukey = ukey[:0]
+				hasUkey = false
+				lseq = kMaxSeq
+			} else {
+				if !hasUkey || db.s.icmp.uCompare(ikey.ukey(), ukey) != 0 {
+					// First occurrence of this user key
+					ukey = append(ukey[:0], ikey.ukey()...)
+					hasUkey = true
+					lseq = kMaxSeq
+				}
+
+				drop := false
+				if lseq <= minSeq {
+					// Dropped because newer entry for same user key exist
+					drop = true // (A)
+				} else if vt == tDel && seq <= minSeq && c.baseLevelForKey(ukey) {
+					// For this user key:
+					// (1) there is no data in higher levels
+					// (2) data in lower levels will have larger seq numbers
+					// (3) data in layers that are being compacted here and have
+					//     smaller seq numbers will be dropped in the next
+					//     few iterations of this loop (by rule (A) above).
+					// Therefore this deletion marker is obsolete and can be dropped.
+					drop = true
+				}
+
+				lseq = seq
+				if drop {
+					dropCnt++
+					continue
+				}
+			}
+
+			// Create new table if not already
+			if tw == nil {
+				// Check for pause event.
+				select {
+				case ch := <-db.tcompPauseC:
+					db.pauseCompaction(ch)
+				case _, _ = <-db.closeC:
+					db.compactionExitTransact()
+				default:
+				}
+
+				// Create new table.
+				tw, err = db.s.tops.create()
+				if err != nil {
+					return
+				}
+			}
+
+			// Write key/value into table
+			err = tw.append(ikey, iter.Value())
+			if err != nil {
+				return
+			}
+
+			// Finish table if it is big enough
+			if tw.tw.BytesLen() >= kMaxTableSize {
+				err = finish()
+				if err != nil {
+					return
+				}
+				snapSched = true
+				tw = nil
+			}
+		}
+
+		err = iter.Error()
+		if err != nil {
+			return
+		}
+
+		// Finish last table
+		if tw != nil && !tw.empty() {
+			err = finish()
+			if err != nil {
+				return
+			}
+			tw = nil
+		}
+		return
+	}, func() error {
+		for _, r := range rec.addedTables {
+			db.logf("table@build rollback @%d", r.num)
+			f := db.s.getTableFile(r.num)
+			if err := f.Remove(); err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+
+	// Commit changes
+	db.compactionTransact("table@commit", func(cnt *compactionTransactCounter) (err error) {
+		stats[1].startTimer()
+		defer stats[1].stopTimer()
+		return db.s.commit(rec)
+	}, nil)
+
+	resultSize := int(stats[1].write)
+	db.logf("table@compaction commited F%s S%s D·%d T·%v", sint(len(rec.addedTables)-len(rec.deletedTables)), sshortenb(resultSize-sourceSize), dropCnt, stats[1].duration)
+
+	// Save compaction stats
+	for i := range stats {
+		db.compStats[c.level+1].add(&stats[i])
+	}
+}
+
+func (db *DB) tableRangeCompaction(level int, umin, umax []byte) {
+	db.logf("table@compaction range L%d %q:%q", level, umin, umax)
+
+	if level >= 0 {
+		if c := db.s.getCompactionRange(level, umin, umax); c != nil {
+			db.tableCompaction(c, true)
+		}
+	} else {
+		v := db.s.version_NB()
+
+		m := 1
+		for i, t := range v.tables[1:] {
+			if t.overlaps(db.s.icmp, umin, umax, false) {
+				m = i + 1
+			}
+		}
+
+		for level := 0; level < m; level++ {
+			if c := db.s.getCompactionRange(level, umin, umax); c != nil {
+				db.tableCompaction(c, true)
+			}
+		}
+	}
+}
+
+func (db *DB) tableAutoCompaction() {
+	if c := db.s.pickCompaction(); c != nil {
+		db.tableCompaction(c, false)
+	}
+}
+
+func (db *DB) tableNeedCompaction() bool {
+	return db.s.version_NB().needCompaction()
+}
+
+func (db *DB) pauseCompaction(ch chan<- struct{}) {
+	select {
+	case ch <- struct{}{}:
+	case _, _ = <-db.closeC:
+		db.compactionExitTransact()
+	}
+}
+
+type cCmd interface {
+	ack(err error)
+}
+
+type cIdle struct {
+	ackC chan<- error
+}
+
+func (r cIdle) ack(err error) {
+	r.ackC <- err
+}
+
+type cRange struct {
+	level    int
+	min, max []byte
+	ackC     chan<- error
+}
+
+func (r cRange) ack(err error) {
+	defer func() {
+		recover()
+	}()
+	if r.ackC != nil {
+		r.ackC <- err
+	}
+}
+
+func (db *DB) compSendIdle(compC chan<- cCmd) error {
+	ch := make(chan error)
+	defer close(ch)
+	// Send cmd.
+	select {
+	case compC <- cIdle{ch}:
+	case err := <-db.compErrC:
+		return err
+	case _, _ = <-db.closeC:
+		return ErrClosed
+	}
+	// Wait cmd.
+	return <-ch
+}
+
+func (db *DB) compSendRange(compC chan<- cCmd, level int, min, max []byte) (err error) {
+	ch := make(chan error)
+	defer close(ch)
+	// Send cmd.
+	select {
+	case compC <- cRange{level, min, max, ch}:
+	case err := <-db.compErrC:
+		return err
+	case _, _ = <-db.closeC:
+		return ErrClosed
+	}
+	// Wait cmd.
+	select {
+	case err = <-db.compErrC:
+	case err = <-ch:
+	}
+	return err
+}
+
+func (db *DB) compTrigger(compTriggerC chan struct{}) {
+	select {
+	case compTriggerC <- struct{}{}:
+	default:
+	}
+}
+
+func (db *DB) mCompaction() {
+	var x cCmd
+
+	defer func() {
+		if x := recover(); x != nil {
+			if x != errCompactionTransactExiting {
+				panic(x)
+			}
+		}
+		if x != nil {
+			x.ack(ErrClosed)
+		}
+		db.closeW.Done()
+	}()
+
+	for {
+		select {
+		case x = <-db.mcompCmdC:
+			db.memCompaction()
+			x.ack(nil)
+			x = nil
+		case <-db.mcompTriggerC:
+			db.memCompaction()
+		case _, _ = <-db.closeC:
+			return
+		}
+	}
+}
+
+func (db *DB) tCompaction() {
+	var x cCmd
+	var ackQ []cCmd
+
+	defer func() {
+		if x := recover(); x != nil {
+			if x != errCompactionTransactExiting {
+				panic(x)
+			}
+		}
+		for i := range ackQ {
+			ackQ[i].ack(ErrClosed)
+			ackQ[i] = nil
+		}
+		if x != nil {
+			x.ack(ErrClosed)
+		}
+		db.closeW.Done()
+	}()
+
+	for {
+		if db.tableNeedCompaction() {
+			select {
+			case x = <-db.tcompCmdC:
+			case <-db.tcompTriggerC:
+			case ch := <-db.tcompPauseC:
+				db.pauseCompaction(ch)
+				continue
+			case _, _ = <-db.closeC:
+				return
+			default:
+			}
+		} else {
+			for i := range ackQ {
+				ackQ[i].ack(nil)
+				ackQ[i] = nil
+			}
+			ackQ = ackQ[:0]
+			select {
+			case x = <-db.tcompCmdC:
+			case <-db.tcompTriggerC:
+			case ch := <-db.tcompPauseC:
+				db.pauseCompaction(ch)
+				continue
+			case _, _ = <-db.closeC:
+				return
+			}
+		}
+		if x != nil {
+			switch cmd := x.(type) {
+			case cIdle:
+				ackQ = append(ackQ, x)
+			case cRange:
+				db.tableRangeCompaction(cmd.level, cmd.min, cmd.max)
+				x.ack(nil)
+			}
+			x = nil
+		}
+		db.tableAutoCompaction()
+	}
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/db_iter.go

@@ -0,0 +1,308 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+	"errors"
+	"runtime"
+
+	"github.com/syndtr/goleveldb/leveldb/iterator"
+	"github.com/syndtr/goleveldb/leveldb/opt"
+	"github.com/syndtr/goleveldb/leveldb/util"
+)
+
+var (
+	errInvalidIkey = errors.New("leveldb: Iterator: invalid internal key")
+)
+
+func (db *DB) newRawIterator(slice *util.Range, ro *opt.ReadOptions) iterator.Iterator {
+	em, fm := db.getMems()
+	v := db.s.version()
+
+	ti := v.getIterators(slice, ro)
+	n := len(ti) + 2
+	i := make([]iterator.Iterator, 0, n)
+	i = append(i, em.NewIterator(slice))
+	if fm != nil {
+		i = append(i, fm.NewIterator(slice))
+	}
+	i = append(i, ti...)
+	strict := db.s.o.GetStrict(opt.StrictIterator) || ro.GetStrict(opt.StrictIterator)
+	mi := iterator.NewMergedIterator(i, db.s.icmp, strict)
+	mi.SetReleaser(&versionReleaser{v: v})
+	return mi
+}
+
+func (db *DB) newIterator(seq uint64, slice *util.Range, ro *opt.ReadOptions) *dbIter {
+	var islice *util.Range
+	if slice != nil {
+		islice = &util.Range{}
+		if slice.Start != nil {
+			islice.Start = newIKey(slice.Start, kMaxSeq, tSeek)
+		}
+		if slice.Limit != nil {
+			islice.Limit = newIKey(slice.Limit, kMaxSeq, tSeek)
+		}
+	}
+	rawIter := db.newRawIterator(islice, ro)
+	iter := &dbIter{
+		icmp:   db.s.icmp,
+		iter:   rawIter,
+		seq:    seq,
+		strict: db.s.o.GetStrict(opt.StrictIterator) || ro.GetStrict(opt.StrictIterator),
+		key:    make([]byte, 0),
+		value:  make([]byte, 0),
+	}
+	runtime.SetFinalizer(iter, (*dbIter).Release)
+	return iter
+}
+
+type dir int
+
+const (
+	dirReleased dir = iota - 1
+	dirSOI
+	dirEOI
+	dirBackward
+	dirForward
+)
+
+// dbIter represent an interator states over a database session.
+type dbIter struct {
+	icmp   *iComparer
+	iter   iterator.Iterator
+	seq    uint64
+	strict bool
+
+	dir      dir
+	key      []byte
+	value    []byte
+	err      error
+	releaser util.Releaser
+}
+
+func (i *dbIter) setErr(err error) {
+	i.err = err
+	i.key = nil
+	i.value = nil
+}
+
+func (i *dbIter) iterErr() {
+	if err := i.iter.Error(); err != nil {
+		i.setErr(err)
+	}
+}
+
+func (i *dbIter) Valid() bool {
+	return i.err == nil && i.dir > dirEOI
+}
+
+func (i *dbIter) First() bool {
+	if i.err != nil {
+		return false
+	} else if i.dir == dirReleased {
+		i.err = ErrIterReleased
+		return false
+	}
+
+	if i.iter.First() {
+		i.dir = dirSOI
+		return i.next()
+	}
+	i.dir = dirEOI
+	i.iterErr()
+	return false
+}
+
+func (i *dbIter) Last() bool {
+	if i.err != nil {
+		return false
+	} else if i.dir == dirReleased {
+		i.err = ErrIterReleased
+		return false
+	}
+
+	if i.iter.Last() {
+		return i.prev()
+	}
+	i.dir = dirSOI
+	i.iterErr()
+	return false
+}
+
+func (i *dbIter) Seek(key []byte) bool {
+	if i.err != nil {
+		return false
+	} else if i.dir == dirReleased {
+		i.err = ErrIterReleased
+		return false
+	}
+
+	ikey := newIKey(key, i.seq, tSeek)
+	if i.iter.Seek(ikey) {
+		i.dir = dirSOI
+		return i.next()
+	}
+	i.dir = dirEOI
+	i.iterErr()
+	return false
+}
+
+func (i *dbIter) next() bool {
+	for {
+		ukey, seq, t, ok := parseIkey(i.iter.Key())
+		if ok {
+			if seq <= i.seq {
+				switch t {
+				case tDel:
+					// Skip deleted key.
+					i.key = append(i.key[:0], ukey...)
+					i.dir = dirForward
+				case tVal:
+					if i.dir == dirSOI || i.icmp.uCompare(ukey, i.key) > 0 {
+						i.key = append(i.key[:0], ukey...)
+						i.value = append(i.value[:0], i.iter.Value()...)
+						i.dir = dirForward
+						return true
+					}
+				}
+			}
+		} else if i.strict {
+			i.setErr(errInvalidIkey)
+			break
+		}
+		if !i.iter.Next() {
+			i.dir = dirEOI
+			i.iterErr()
+			break
+		}
+	}
+	return false
+}
+
+func (i *dbIter) Next() bool {
+	if i.dir == dirEOI || i.err != nil {
+		return false
+	} else if i.dir == dirReleased {
+		i.err = ErrIterReleased
+		return false
+	}
+
+	if !i.iter.Next() || (i.dir == dirBackward && !i.iter.Next()) {
+		i.dir = dirEOI
+		i.iterErr()
+		return false
+	}
+	return i.next()
+}
+
+func (i *dbIter) prev() bool {
+	i.dir = dirBackward
+	del := true
+	if i.iter.Valid() {
+		for {
+			ukey, seq, t, ok := parseIkey(i.iter.Key())
+			if ok {
+				if seq <= i.seq {
+					if !del && i.icmp.uCompare(ukey, i.key) < 0 {
+						return true
+					}
+					del = (t == tDel)
+					if !del {
+						i.key = append(i.key[:0], ukey...)
+						i.value = append(i.value[:0], i.iter.Value()...)
+					}
+				}
+			} else if i.strict {
+				i.setErr(errInvalidIkey)
+				return false
+			}
+			if !i.iter.Prev() {
+				break
+			}
+		}
+	}
+	if del {
+		i.dir = dirSOI
+		i.iterErr()
+		return false
+	}
+	return true
+}
+
+func (i *dbIter) Prev() bool {
+	if i.dir == dirSOI || i.err != nil {
+		return false
+	} else if i.dir == dirReleased {
+		i.err = ErrIterReleased
+		return false
+	}
+
+	switch i.dir {
+	case dirEOI:
+		return i.Last()
+	case dirForward:
+		for i.iter.Prev() {
+			ukey, _, _, ok := parseIkey(i.iter.Key())
+			if ok {
+				if i.icmp.uCompare(ukey, i.key) < 0 {
+					goto cont
+				}
+			} else if i.strict {
+				i.setErr(errInvalidIkey)
+				return false
+			}
+		}
+		i.dir = dirSOI
+		i.iterErr()
+		return false
+	}
+
+cont:
+	return i.prev()
+}
+
+func (i *dbIter) Key() []byte {
+	if i.err != nil || i.dir <= dirEOI {
+		return nil
+	}
+	return i.key
+}
+
+func (i *dbIter) Value() []byte {
+	if i.err != nil || i.dir <= dirEOI {
+		return nil
+	}
+	return i.value
+}
+
+func (i *dbIter) Release() {
+	if i.dir != dirReleased {
+		// Clear the finalizer.
+		runtime.SetFinalizer(i, nil)
+
+		if i.releaser != nil {
+			i.releaser.Release()
+		}
+
+		i.dir = dirReleased
+		i.key = nil
+		i.value = nil
+		i.iter.Release()
+		i.iter = nil
+	}
+}
+
+func (i *dbIter) SetReleaser(releaser util.Releaser) {
+	if i.dir != dirReleased {
+		i.releaser = releaser
+	}
+}
+
+func (i *dbIter) Error() error {
+	return i.err
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/db_snapshot.go

@@ -0,0 +1,166 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+	"runtime"
+	"sync"
+
+	"github.com/syndtr/goleveldb/leveldb/iterator"
+	"github.com/syndtr/goleveldb/leveldb/opt"
+	"github.com/syndtr/goleveldb/leveldb/util"
+)
+
+type snapshotElement struct {
+	seq uint64
+	ref int
+	// Next and previous pointers in the doubly-linked list of elements.
+	next, prev *snapshotElement
+}
+
+// Initialize the snapshot.
+func (db *DB) initSnapshot() {
+	db.snapsRoot.next = &db.snapsRoot
+	db.snapsRoot.prev = &db.snapsRoot
+}
+
+// Acquires a snapshot, based on latest sequence.
+func (db *DB) acquireSnapshot() *snapshotElement {
+	db.snapsMu.Lock()
+	seq := db.getSeq()
+	elem := db.snapsRoot.prev
+	if elem == &db.snapsRoot || elem.seq != seq {
+		at := db.snapsRoot.prev
+		next := at.next
+		elem = &snapshotElement{
+			seq:  seq,
+			prev: at,
+			next: next,
+		}
+		at.next = elem
+		next.prev = elem
+	}
+	elem.ref++
+	db.snapsMu.Unlock()
+	return elem
+}
+
+// Releases given snapshot element.
+func (db *DB) releaseSnapshot(elem *snapshotElement) {
+	if !db.isClosed() {
+		db.snapsMu.Lock()
+		elem.ref--
+		if elem.ref == 0 {
+			elem.prev.next = elem.next
+			elem.next.prev = elem.prev
+			elem.next = nil
+			elem.prev = nil
+		} else if elem.ref < 0 {
+			panic("leveldb: Snapshot: negative element reference")
+		}
+		db.snapsMu.Unlock()
+	}
+}
+
+// Gets minimum sequence that not being snapshoted.
+func (db *DB) minSeq() uint64 {
+	db.snapsMu.Lock()
+	defer db.snapsMu.Unlock()
+	elem := db.snapsRoot.prev
+	if elem != &db.snapsRoot {
+		return elem.seq
+	}
+	return db.getSeq()
+}
+
+// Snapshot is a DB snapshot.
+type Snapshot struct {
+	db       *DB
+	elem     *snapshotElement
+	mu       sync.Mutex
+	released bool
+}
+
+// Creates new snapshot object.
+func (db *DB) newSnapshot() *Snapshot {
+	snap := &Snapshot{
+		db:   db,
+		elem: db.acquireSnapshot(),
+	}
+	runtime.SetFinalizer(snap, (*Snapshot).Release)
+	return snap
+}
+
+// Get gets the value for the given key. It returns ErrNotFound if
+// the DB does not contain the key.
+//
+// The caller should not modify the contents of the returned slice, but
+// it is safe to modify the contents of the argument after Get returns.
+func (snap *Snapshot) Get(key []byte, ro *opt.ReadOptions) (value []byte, err error) {
+	err = snap.db.ok()
+	if err != nil {
+		return
+	}
+	snap.mu.Lock()
+	defer snap.mu.Unlock()
+	if snap.released {
+		err = ErrSnapshotReleased
+		return
+	}
+	return snap.db.get(key, snap.elem.seq, ro)
+}
+
+// NewIterator returns an iterator for the snapshot of the uderlying DB.
+// The returned iterator is not goroutine-safe, but it is safe to use
+// multiple iterators concurrently, with each in a dedicated goroutine.
+// It is also safe to use an iterator concurrently with modifying its
+// underlying DB. The resultant key/value pairs are guaranteed to be
+// consistent.
+//
+// Slice allows slicing the iterator to only contains keys in the given
+// range. A nil Range.Start is treated as a key before all keys in the
+// DB. And a nil Range.Limit is treated as a key after all keys in
+// the DB.
+//
+// The iterator must be released after use, by calling Release method.
+// Releasing the snapshot doesn't mean releasing the iterator too, the
+// iterator would be still valid until released.
+//
+// Also read Iterator documentation of the leveldb/iterator package.
+func (snap *Snapshot) NewIterator(slice *util.Range, ro *opt.ReadOptions) iterator.Iterator {
+	if err := snap.db.ok(); err != nil {
+		return iterator.NewEmptyIterator(err)
+	}
+	snap.mu.Lock()
+	defer snap.mu.Unlock()
+	if snap.released {
+		return iterator.NewEmptyIterator(ErrSnapshotReleased)
+	}
+	// Since iterator already hold version ref, it doesn't need to
+	// hold snapshot ref.
+	return snap.db.newIterator(snap.elem.seq, slice, ro)
+}
+
+// Release releases the snapshot. This will not release any returned
+// iterators, the iterators would still be valid until released or the
+// underlying DB is closed.
+//
+// Other methods should not be called after the snapshot has been released.
+func (snap *Snapshot) Release() {
+	snap.mu.Lock()
+	defer snap.mu.Unlock()
+
+	if !snap.released {
+		// Clear the finalizer.
+		runtime.SetFinalizer(snap, nil)
+
+		snap.released = true
+		snap.db.releaseSnapshot(snap.elem)
+		snap.db = nil
+		snap.elem = nil
+	}
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/db_state.go

@@ -0,0 +1,115 @@
+// Copyright (c) 2013, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+	"sync/atomic"
+
+	"github.com/syndtr/goleveldb/leveldb/journal"
+	"github.com/syndtr/goleveldb/leveldb/memdb"
+)
+
+// Get latest sequence number.
+func (db *DB) getSeq() uint64 {
+	return atomic.LoadUint64(&db.seq)
+}
+
+// Atomically adds delta to seq.
+func (db *DB) addSeq(delta uint64) {
+	atomic.AddUint64(&db.seq, delta)
+}
+
+// Create new memdb and froze the old one; need external synchronization.
+// newMem only called synchronously by the writer.
+func (db *DB) newMem(n int) (mem *memdb.DB, err error) {
+	num := db.s.allocFileNum()
+	file := db.s.getJournalFile(num)
+	w, err := file.Create()
+	if err != nil {
+		db.s.reuseFileNum(num)
+		return
+	}
+
+	db.memMu.Lock()
+	defer db.memMu.Unlock()
+
+	if db.journal == nil {
+		db.journal = journal.NewWriter(w)
+	} else {
+		db.journal.Reset(w)
+		db.journalWriter.Close()
+		db.frozenJournalFile = db.journalFile
+	}
+	db.journalWriter = w
+	db.journalFile = file
+	db.frozenMem = db.mem
+	db.mem = memdb.New(db.s.icmp, maxInt(db.s.o.GetWriteBuffer(), n))
+	mem = db.mem
+	// The seq only incremented by the writer. And whoever called newMem
+	// should hold write lock, so no need additional synchronization here.
+	db.frozenSeq = db.seq
+	return
+}
+
+// Get all memdbs.
+func (db *DB) getMems() (e *memdb.DB, f *memdb.DB) {
+	db.memMu.RLock()
+	defer db.memMu.RUnlock()
+	return db.mem, db.frozenMem
+}
+
+// Get frozen memdb.
+func (db *DB) getEffectiveMem() *memdb.DB {
+	db.memMu.RLock()
+	defer db.memMu.RUnlock()
+	return db.mem
+}
+
+// Check whether we has frozen memdb.
+func (db *DB) hasFrozenMem() bool {
+	db.memMu.RLock()
+	defer db.memMu.RUnlock()
+	return db.frozenMem != nil
+}
+
+// Get frozen memdb.
+func (db *DB) getFrozenMem() *memdb.DB {
+	db.memMu.RLock()
+	defer db.memMu.RUnlock()
+	return db.frozenMem
+}
+
+// Drop frozen memdb; assume that frozen memdb isn't nil.
+func (db *DB) dropFrozenMem() {
+	db.memMu.Lock()
+	if err := db.frozenJournalFile.Remove(); err != nil {
+		db.logf("journal@remove removing @%d %q", db.frozenJournalFile.Num(), err)
+	} else {
+		db.logf("journal@remove removed @%d", db.frozenJournalFile.Num())
+	}
+	db.frozenJournalFile = nil
+	db.frozenMem = nil
+	db.memMu.Unlock()
+}
+
+// Set closed flag; return true if not already closed.
+func (db *DB) setClosed() bool {
+	return atomic.CompareAndSwapUint32(&db.closed, 0, 1)
+}
+
+// Check whether DB was closed.
+func (db *DB) isClosed() bool {
+	return atomic.LoadUint32(&db.closed) != 0
+}
+
+// Check read ok status.
+func (db *DB) ok() error {
+	if db.isClosed() {
+		return ErrClosed
+	}
+	return nil
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/db_util.go

@@ -0,0 +1,97 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+	"errors"
+
+	"github.com/syndtr/goleveldb/leveldb/iterator"
+	"github.com/syndtr/goleveldb/leveldb/opt"
+	"github.com/syndtr/goleveldb/leveldb/storage"
+	"github.com/syndtr/goleveldb/leveldb/util"
+)
+
+// Reader is the interface that wraps basic Get and NewIterator methods.
+// This interface implemented by both DB and Snapshot.
+type Reader interface {
+	Get(key []byte, ro *opt.ReadOptions) (value []byte, err error)
+	NewIterator(slice *util.Range, ro *opt.ReadOptions) iterator.Iterator
+}
+
+type Sizes []uint64
+
+// Sum returns sum of the sizes.
+func (p Sizes) Sum() (n uint64) {
+	for _, s := range p {
+		n += s
+	}
+	return n
+}
+
+// Logging.
+func (db *DB) log(v ...interface{})                 { db.s.log(v...) }
+func (db *DB) logf(format string, v ...interface{}) { db.s.logf(format, v...) }
+
+// Check and clean files.
+func (db *DB) checkAndCleanFiles() error {
+	v := db.s.version_NB()
+	tablesMap := make(map[uint64]bool)
+	for _, tables := range v.tables {
+		for _, t := range tables {
+			tablesMap[t.file.Num()] = false
+		}
+	}
+
+	files, err := db.s.getFiles(storage.TypeAll)
+	if err != nil {
+		return err
+	}
+
+	var nTables int
+	var rem []storage.File
+	for _, f := range files {
+		keep := true
+		switch f.Type() {
+		case storage.TypeManifest:
+			keep = f.Num() >= db.s.manifestFile.Num()
+		case storage.TypeJournal:
+			if db.frozenJournalFile != nil {
+				keep = f.Num() >= db.frozenJournalFile.Num()
+			} else {
+				keep = f.Num() >= db.journalFile.Num()
+			}
+		case storage.TypeTable:
+			_, keep = tablesMap[f.Num()]
+			if keep {
+				tablesMap[f.Num()] = true
+				nTables++
+			}
+		}
+
+		if !keep {
+			rem = append(rem, f)
+		}
+	}
+
+	if nTables != len(tablesMap) {
+		for num, present := range tablesMap {
+			if !present {
+				db.logf("db@janitor table missing @%d", num)
+			}
+		}
+		return ErrCorrupted{Type: MissingFiles, Err: errors.New("leveldb: table files missing")}
+	}
+
+	db.logf("db@janitor F·%d G·%d", len(files), len(rem))
+	for _, f := range rem {
+		db.logf("db@janitor removing %s-%d", f.Type(), f.Num())
+		if err := f.Remove(); err != nil {
+			return err
+		}
+	}
+	return nil
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/db_write.go

@@ -0,0 +1,277 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+	"time"
+
+	"github.com/syndtr/goleveldb/leveldb/memdb"
+	"github.com/syndtr/goleveldb/leveldb/opt"
+	"github.com/syndtr/goleveldb/leveldb/util"
+)
+
+func (db *DB) writeJournal(b *Batch) error {
+	w, err := db.journal.Next()
+	if err != nil {
+		return err
+	}
+	if _, err := w.Write(b.encode()); err != nil {
+		return err
+	}
+	if err := db.journal.Flush(); err != nil {
+		return err
+	}
+	if b.sync {
+		return db.journalWriter.Sync()
+	}
+	return nil
+}
+
+func (db *DB) jWriter() {
+	defer db.closeW.Done()
+	for {
+		select {
+		case b := <-db.journalC:
+			if b != nil {
+				db.journalAckC <- db.writeJournal(b)
+			}
+		case _, _ = <-db.closeC:
+			return
+		}
+	}
+}
+
+func (db *DB) rotateMem(n int) (mem *memdb.DB, err error) {
+	// Wait for pending memdb compaction.
+	err = db.compSendIdle(db.mcompCmdC)
+	if err != nil {
+		return
+	}
+
+	// Create new memdb and journal.
+	mem, err = db.newMem(n)
+	if err != nil {
+		return
+	}
+
+	// Schedule memdb compaction.
+	db.compTrigger(db.mcompTriggerC)
+	return
+}
+
+func (db *DB) flush(n int) (mem *memdb.DB, nn int, err error) {
+	delayed := false
+	flush := func() bool {
+		v := db.s.version()
+		defer v.release()
+		mem = db.getEffectiveMem()
+		nn = mem.Free()
+		switch {
+		case v.tLen(0) >= kL0_SlowdownWritesTrigger && !delayed:
+			delayed = true
+			time.Sleep(time.Millisecond)
+		case nn >= n:
+			return false
+		case v.tLen(0) >= kL0_StopWritesTrigger:
+			delayed = true
+			err = db.compSendIdle(db.tcompCmdC)
+			if err != nil {
+				return false
+			}
+		default:
+			// Allow memdb to grow if it has no entry.
+			if mem.Len() == 0 {
+				nn = n
+				return false
+			}
+			mem, err = db.rotateMem(n)
+			nn = mem.Free()
+			return false
+		}
+		return true
+	}
+	start := time.Now()
+	for flush() {
+	}
+	if delayed {
+		db.logf("db@write delayed T·%v", time.Since(start))
+	}
+	return
+}
+
+// Write apply the given batch to the DB. The batch will be applied
+// sequentially.
+//
+// It is safe to modify the contents of the arguments after Write returns.
+func (db *DB) Write(b *Batch, wo *opt.WriteOptions) (err error) {
+	err = db.ok()
+	if err != nil || b == nil || b.len() == 0 {
+		return
+	}
+
+	b.init(wo.GetSync())
+
+	// The write happen synchronously.
+retry:
+	select {
+	case db.writeC <- b:
+		if <-db.writeMergedC {
+			return <-db.writeAckC
+		}
+		goto retry
+	case db.writeLockC <- struct{}{}:
+	case _, _ = <-db.closeC:
+		return ErrClosed
+	}
+
+	merged := 0
+	defer func() {
+		<-db.writeLockC
+		for i := 0; i < merged; i++ {
+			db.writeAckC <- err
+		}
+	}()
+
+	mem, memFree, err := db.flush(b.size())
+	if err != nil {
+		return
+	}
+
+	// Calculate maximum size of the batch.
+	m := 1 << 20
+	if x := b.size(); x <= 128<<10 {
+		m = x + (128 << 10)
+	}
+	m = minInt(m, memFree)
+
+	// Merge with other batch.
+drain:
+	for b.size() < m && !b.sync {
+		select {
+		case nb := <-db.writeC:
+			if b.size()+nb.size() <= m {
+				b.append(nb)
+				db.writeMergedC <- true
+				merged++
+			} else {
+				db.writeMergedC <- false
+				break drain
+			}
+		default:
+			break drain
+		}
+	}
+
+	// Set batch first seq number relative from last seq.
+	b.seq = db.seq + 1
+
+	// Write journal concurrently if it is large enough.
+	if b.size() >= (128 << 10) {
+		// Push the write batch to the journal writer
+		select {
+		case _, _ = <-db.closeC:
+			err = ErrClosed
+			return
+		case db.journalC <- b:
+			// Write into memdb
+			b.memReplay(mem)
+		}
+		// Wait for journal writer
+		select {
+		case _, _ = <-db.closeC:
+			err = ErrClosed
+			return
+		case err = <-db.journalAckC:
+			if err != nil {
+				// Revert memdb if error detected
+				b.revertMemReplay(mem)
+				return
+			}
+		}
+	} else {
+		err = db.writeJournal(b)
+		if err != nil {
+			return
+		}
+		b.memReplay(mem)
+	}
+
+	// Set last seq number.
+	db.addSeq(uint64(b.len()))
+
+	if b.size() >= memFree {
+		db.rotateMem(0)
+	}
+	return
+}
+
+// Put sets the value for the given key. It overwrites any previous value
+// for that key; a DB is not a multi-map.
+//
+// It is safe to modify the contents of the arguments after Put returns.
+func (db *DB) Put(key, value []byte, wo *opt.WriteOptions) error {
+	b := new(Batch)
+	b.Put(key, value)
+	return db.Write(b, wo)
+}
+
+// Delete deletes the value for the given key. It returns ErrNotFound if
+// the DB does not contain the key.
+//
+// It is safe to modify the contents of the arguments after Delete returns.
+func (db *DB) Delete(key []byte, wo *opt.WriteOptions) error {
+	b := new(Batch)
+	b.Delete(key)
+	return db.Write(b, wo)
+}
+
+func isMemOverlaps(icmp *iComparer, mem *memdb.DB, min, max []byte) bool {
+	iter := mem.NewIterator(nil)
+	defer iter.Release()
+	return (max == nil || (iter.First() && icmp.uCompare(max, iKey(iter.Key()).ukey()) >= 0)) &&
+		(min == nil || (iter.Last() && icmp.uCompare(min, iKey(iter.Key()).ukey()) <= 0))
+}
+
+// CompactRange compacts the underlying DB for the given key range.
+// In particular, deleted and overwritten versions are discarded,
+// and the data is rearranged to reduce the cost of operations
+// needed to access the data. This operation should typically only
+// be invoked by users who understand the underlying implementation.
+//
+// A nil Range.Start is treated as a key before all keys in the DB.
+// And a nil Range.Limit is treated as a key after all keys in the DB.
+// Therefore if both is nil then it will compact entire DB.
+func (db *DB) CompactRange(r util.Range) error {
+	if err := db.ok(); err != nil {
+		return err
+	}
+
+	select {
+	case db.writeLockC <- struct{}{}:
+	case _, _ = <-db.closeC:
+		return ErrClosed
+	}
+
+	// Check for overlaps in memdb.
+	mem := db.getEffectiveMem()
+	if isMemOverlaps(db.s.icmp, mem, r.Start, r.Limit) {
+		// Memdb compaction.
+		if _, err := db.rotateMem(0); err != nil {
+			<-db.writeLockC
+			return err
+		}
+		<-db.writeLockC
+		if err := db.compSendIdle(db.mcompCmdC); err != nil {
+			return err
+		}
+	} else {
+		<-db.writeLockC
+	}
+
+	// Table compaction.
+	return db.compSendRange(db.tcompCmdC, -1, r.Start, r.Limit)
+}