mirror of
https://github.com/RsyncProject/rsync.git
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149 lines
3.5 KiB
Perl
Executable File
149 lines
3.5 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# This script is used to turn one or more of the "patch/*" branches
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# into one or more diffs in the "patches" directory. Pass the option
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# --gen if you want generated files in the diffs. Pass the name of
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# one or more diffs if you want to just update a subset of all the
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# diffs.
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use strict;
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die "No 'patches' directory present in the current dir.\n" unless -d 'patches';
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die "No '.git' directory present in the current dir.\n" unless -d '.git';
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my @extra_files;
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open(IN, '<', 'Makefile.in') or die "Couldn't open Makefile.in: $!\n";
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while (<IN>) {
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if (s/^GENFILES=//) {
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while (s/\\$//) {
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$_ .= <IN>;
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}
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@extra_files = split(' ', $_);
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last;
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}
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}
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close IN;
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my $incl_generated_files = shift if @ARGV && $ARGV[0] eq '--gen';
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system "git checkout master" and exit 1;
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if ($incl_generated_files) {
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die "'a' must not exist in the current directory.\n" if -e 'a';
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die "'b' must not exist in the current directory.\n" if -e 'b';
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system "make gen && rsync -a @extra_files a/" and exit 1;
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}
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my $last_touch = time;
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my(@patches, %local_patch);
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if (@ARGV) {
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foreach (@ARGV) {
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s{^(patches|patch|origin/patch)/} {};
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s{\.diff$} {};
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push(@patches, $_);
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}
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open(PIPE, '-|', 'git', 'branch', '-l') or die $!;
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} else {
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open(PIPE, '-|', 'git', 'branch', '-a') or die $!;
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}
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while (<PIPE>) {
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if (m# origin/patch/(.*)#) {
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push(@patches, $1);
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} elsif (m# patch/(.*)#) {
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$local_patch{$1} = 1;
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}
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}
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close PIPE;
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my(%parent, %description);
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foreach my $patch (@patches) {
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my $branch = ($local_patch{$patch} ? '' : 'origin/') . "patch/$patch";
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my $desc = '';
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open(PIPE, '-|', 'git', 'diff', '-U1000', "master...$branch", '--', "PATCH.$patch") or die $!;
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while (<PIPE>) {
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next if m{^\Q+++\E b/PATCH};
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next unless s/^[ +]//;
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if (m#patch -p1 <patches/(\S+)\.diff# && $1 ne $patch) {
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$parent{$patch} = $1;
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}
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$desc .= $_;
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}
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$description{$patch} = $desc;
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}
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my %completed;
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foreach my $patch (@patches) {
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next if $completed{$patch}++;
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update_patch($patch);
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}
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if ($incl_generated_files) {
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system "rm -rf a b";
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}
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sleep 1 if $last_touch == time;
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system "git checkout master";
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exit;
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sub update_patch
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{
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my($patch) = @_;
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my $parent = $parent{$patch};
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if (defined $parent) {
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unless ($completed{$parent}++) {
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update_patch($parent);
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}
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$parent = "patch/$parent";
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} else {
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$parent = 'master';
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}
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print "======== $patch ========\n";
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sleep 1 if $incl_generated_files && $last_touch == time;
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if ($local_patch{$patch}) {
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system "git checkout patch/$patch" and exit 1;
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} else {
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system "git checkout --track -b patch/$patch origin/patch/$patch" and exit 1;
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}
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open(OUT, '>', "patches/$patch.diff") or die $!;
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print OUT $description{$patch}, "\n";
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if (system("git rebase -m $parent") != 0) {
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print qq|"git rebase -m $parent" incomplete -- please fix.\n|;
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$ENV{PS1} = "[$parent] patch/$patch: ";
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system $ENV{SHELL} and exit 1;
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}
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if ($incl_generated_files) {
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system "make gen && rsync -a @extra_files b/" and exit 1;
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}
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$last_touch = time;
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open(PIPE, '-|', 'git', 'diff', $parent) or die $!;
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DIFF: while (<PIPE>) {
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while (m{^diff --git a/PATCH}) {
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while (<PIPE>) {
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last if m{^diff --git a/};
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}
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last DIFF if !defined $_;
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}
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next if /^index /;
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print OUT $_;
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}
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close PIPE;
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if ($incl_generated_files) {
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open(PIPE, '-|', 'diff', '-up', 'a', 'b') or die $!;
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while (<PIPE>) {
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s/^((?:---|\+\+\+) [^\t]+)\t.*/$1/;
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print OUT $_;
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}
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close PIPE;
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}
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close OUT;
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}
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