chore: linter: perfsprint

Signed-off-by: Jakob Borg <jakob@kastelo.net>

cmd/infra/stcrashreceiver/util.go

@@ -10,7 +10,7 @@ import (
 	"bytes"
 	"compress/gzip"
 	"crypto/sha256"
-	"fmt"
+	"encoding/hex"
 	"net"
 	"net/http"
 	"os"
@@ -32,7 +32,7 @@ func userIDFor(req *http.Request) string {
 	now := time.Now().Format("200601")
 	salt := "stcrashreporter"
 	hash := sha256.Sum256([]byte(salt + addr + now))
-	return fmt.Sprintf("%x", hash[:8])
+	return hex.EncodeToString(hash[:8])
 }
 
 // 01234567890abcdef... => 01/23

cmd/strelaysrv/main.go

@@ -14,6 +14,7 @@ import (
 	"os"
 	"os/signal"
 	"path/filepath"
+	"strconv"
 	"strings"
 	"sync/atomic"
 	"syscall"
@@ -247,10 +248,10 @@ func main() {
 	query.Set("pingInterval", pingInterval.String())
 	query.Set("networkTimeout", networkTimeout.String())
 	if sessionLimitBps > 0 {
-		query.Set("sessionLimitBps", fmt.Sprint(sessionLimitBps))
+		query.Set("sessionLimitBps", strconv.Itoa(sessionLimitBps))
 	}
 	if globalLimitBps > 0 {
-		query.Set("globalLimitBps", fmt.Sprint(globalLimitBps))
+		query.Set("globalLimitBps", strconv.Itoa(globalLimitBps))
 	}
 	if statusAddr != "" {
 		query.Set("statusAddr", statusAddr)

lib/discover/global.go

@@ -472,7 +472,7 @@ func ipv4Identity(port int) string {
 }
 
 func ipv6Identity(addr string) string {
-	return fmt.Sprintf("IPv6 local multicast discovery on address %s", addr)
+	return "IPv6 local multicast discovery on address " + addr
 }
 
 func http2EnabledTransport(t *http.Transport) *http.Transport {

lib/httpcache/httpcache.go

@@ -12,6 +12,7 @@ import (
 	"context"
 	"fmt"
 	"net/http"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -50,13 +51,13 @@ func (resp *recordedResponse) ServeHTTP(w http.ResponseWriter, r *http.Request)
 
 	if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
 		w.Header().Set("Content-Encoding", "gzip")
-		w.Header().Set("Content-Length", fmt.Sprint(len(resp.gzip)))
+		w.Header().Set("Content-Length", strconv.Itoa(len(resp.gzip)))
 		w.WriteHeader(resp.status)
 		_, _ = w.Write(resp.gzip)
 		return
 	}
 
-	w.Header().Set("Content-Length", fmt.Sprint(len(resp.data)))
+	w.Header().Set("Content-Length", strconv.Itoa(len(resp.data)))
 	w.WriteHeader(resp.status)
 	_, _ = w.Write(resp.data)
 }

lib/ignore/ignore.go

@@ -10,6 +10,7 @@ import (
 	"bufio"
 	"bytes"
 	"crypto/sha256"
+	"encoding/hex"
 	"errors"
 	"fmt"
 	"io"
@@ -353,7 +354,7 @@ func hashPatterns(patterns []Pattern) string {
 		h.Write([]byte(pat.String()))
 		h.Write([]byte("\n"))
 	}
-	return fmt.Sprintf("%x", h.Sum(nil))
+	return hex.EncodeToString(h.Sum(nil))
 }
 
 func loadIgnoreFile(fs fs.Filesystem, file string) (fs.File, fs.FileInfo, error) {

lib/osutil/traversessymlink.go

@@ -7,7 +7,6 @@
 package osutil
 
 import (
-	"fmt"
 	"path/filepath"
 
 	"github.com/syncthing/syncthing/lib/fs"
@@ -19,7 +18,7 @@ type TraversesSymlinkError struct {
 }
 
 func (e *TraversesSymlinkError) Error() string {
-	return fmt.Sprintf("traverses symlink: %s", e.path)
+	return "traverses symlink: " + e.path
 }
 
 // NotADirectoryError is an error indicating an expected path is not a directory
@@ -28,7 +27,7 @@ type NotADirectoryError struct {
 }
 
 func (e *NotADirectoryError) Error() string {
-	return fmt.Sprintf("not a directory: %s", e.path)
+	return "not a directory: " + e.path
 }
 
 // TraversesSymlink returns an error if any path component of name (including name

lib/pmp/pmp.go

@@ -9,7 +9,6 @@ package pmp
 import (
 	"context"
 	"errors"
-	"fmt"
 	"log/slog"
 	"net"
 	"strings"
@@ -90,7 +89,7 @@ type wrapper struct {
 }
 
 func (w *wrapper) ID() string {
-	return fmt.Sprintf("NAT-PMP@%s", w.gatewayIP.String())
+	return "NAT-PMP@" + w.gatewayIP.String()
 }
 
 func (w *wrapper) GetLocalIPv4Address() net.IP {

lib/signature/signature.go

@@ -14,9 +14,9 @@ import (
 	"crypto/sha256"
 	"crypto/x509"
 	"encoding/asn1"
+	"encoding/hex"
 	"encoding/pem"
 	"errors"
-	"fmt"
 	"io"
 	"math/big"
 
@@ -135,7 +135,7 @@ func hashReader(r io.Reader) ([]byte, error) {
 	if _, err := io.Copy(h, r); err != nil {
 		return nil, err
 	}
-	hash := []byte(fmt.Sprintf("%x", h.Sum(nil)))
+	hash := []byte(hex.EncodeToString(h.Sum(nil)))
 	return hash, nil
 }
 

lib/upnp/upnp.go

@@ -86,7 +86,7 @@ type UnsupportedDeviceTypeError struct {
 }
 
 func (e *UnsupportedDeviceTypeError) Error() string {
-	return fmt.Sprintf("Unsupported UPnP device of type %s", e.deviceType)
+	return "unsupported UPnP device of type " + e.deviceType
 }
 
 const (