my $sha1_pattern = qr/[0-9a-fA-F]{40}/; # pattern to validate Git sha1sums
my $dummy_commit_msg = 'dummy commit'; # message to skip in recent changes
-my $no_chdir=0;
+my $git_dir=undef;
sub import {
hook(type => "checkconfig", id => "git", call => \&checkconfig);
hook(type => "rcs", id => "rcs_receive", call => \&rcs_receive);
hook(type => "rcs", id => "rcs_preprevert", call => \&rcs_preprevert);
hook(type => "rcs", id => "rcs_revert", call => \&rcs_revert);
- hook(type => "rcs", id => "rcs_showpatch", call => \&rcs_showpatch);
}
sub checkconfig () {
}
sub safe_git (&@) {
- # Start a child process safely without resorting /bin/sh.
- # Return command output or success state (in scalar context).
+ # Start a child process safely without resorting to /bin/sh.
+ # Returns command output (in list content) or success state
+ # (in scalar context), or runs the specified data handler.
- my ($error_handler, @cmdline) = @_;
+ my ($error_handler, $data_handler, @cmdline) = @_;
my $pid = open my $OUT, "-|";
if (!$pid) {
# In child.
# Git commands want to be in wc.
- if (! $no_chdir) {
+ if (! defined $git_dir) {
chdir $config{srcdir}
- or error("Cannot chdir to $config{srcdir}: $!");
+ or error("cannot chdir to $config{srcdir}: $!");
+ }
+ else {
+ chdir $git_dir
+ or error("cannot chdir to $git_dir: $!");
}
exec @cmdline or error("Cannot exec '@cmdline': $!");
}
chomp;
- push @lines, $_;
+ if (! defined $data_handler) {
+ push @lines, $_;
+ }
+ else {
+ last unless $data_handler->($_);
+ }
}
close $OUT;
return wantarray ? @lines : ($? == 0);
}
# Convenient wrappers.
-sub run_or_die ($@) { safe_git(\&error, @_) }
-sub run_or_cry ($@) { safe_git(sub { warn @_ }, @_) }
-sub run_or_non ($@) { safe_git(undef, @_) }
+sub run_or_die ($@) { safe_git(\&error, undef, @_) }
+sub run_or_cry ($@) { safe_git(sub { warn @_ }, undef, @_) }
+sub run_or_non ($@) { safe_git(undef, undef, @_) }
sub merge_past ($$$) {
return $conflict if defined $conflict;
}
- rcs_add($params{file});
- return rcs_commit_staged(
- message => $params{message},
- session => $params{session},
- );
+ return rcs_commit_helper(@_);
}
sub rcs_commit_staged (@) {
# Commits all staged changes. Changes can be staged using rcs_add,
# rcs_remove, and rcs_rename.
+ return rcs_commit_helper(@_);
+}
+
+sub rcs_commit_helper (@) {
my %params=@_;
my %env=%ENV;
$params{message}.=".";
}
}
- push @opts, '-q';
- # git commit returns non-zero if file has not been really changed.
- # so we should ignore its exit status (hence run_or_non).
- if (run_or_non('git', 'commit', @opts, '-m', $params{message})) {
+ if (exists $params{file}) {
+ push @opts, '--', $params{file};
+ }
+ # git commit returns non-zero if nothing really changed.
+ # So we should ignore its exit status (hence run_or_non).
+ if (run_or_non('git', 'commit', '-m', $params{message}, '-q', @opts)) {
if (length $config{gitorigin_branch}) {
run_or_cry('git', 'push', $config{gitorigin_branch});
}
return @rets;
}
-sub rcs_diff ($) {
+sub rcs_diff ($;$) {
my $rev=shift;
+ my $maxlines=shift;
my ($sha1) = $rev =~ /^($sha1_pattern)$/; # untaint
my @lines;
- foreach my $line (run_or_non("git", "show", $sha1)) {
- if (@lines || $line=~/^diff --git/) {
- push @lines, $line."\n";
- }
- }
+ my $addlines=sub {
+ my $line=shift;
+ return if defined $maxlines && @lines == $maxlines;
+ push @lines, $line."\n"
+ if (@lines || $line=~/^diff --git/);
+ return 1;
+ };
+ safe_git(undef, $addlines, "git", "show", $sha1);
if (wantarray) {
return @lines;
}
if (! keys %time_cache) {
my $date;
foreach my $line (run_or_die('git', 'log',
- '--pretty=format:%ct',
+ '--pretty=format:%at',
'--name-only', '--relative')) {
if (! defined $date && $line =~ /^(\d+)$/) {
$date=$line;
}
{
-my $git_root;
-
+my $ret;
sub git_find_root {
# The wiki may not be the only thing in the git repo.
# Determine if it is in a subdirectory by examining the srcdir,
# and its parents, looking for the .git directory.
- return $git_root if defined $git_root;
+ return @$ret if defined $ret;
my $subdir="";
my $dir=$config{srcdir};
}
}
- return $git_root=$subdir;
+ $ret=[$subdir, $dir];
+ return @$ret;
}
}
sub git_parse_changes {
my @changes = @_;
- my $subdir = git_find_root();
+ my ($subdir, $rootdir) = git_find_root();
my @rets;
foreach my $ci (@changes) {
foreach my $detail (@{ $ci->{'details'} }) {
eval q{use File::Temp};
die $@ if $@;
my $fh;
- ($fh, $path)=File::Temp::tempfile("XXXXXXXXXX", UNLINK => 1);
- # Ensure we run this in the right place,
- # see comments in rcs_receive.
- my $cmd = ($no_chdir ? '' : "cd $config{srcdir} && ")
- . "git show $detail->{sha1_to} > '$path'";
+ ($fh, $path)=File::Temp::tempfile(undef, UNLINK => 1);
+ my $cmd = "cd $git_dir && ".
+ "git show $detail->{sha1_to} > '$path'";
if (system($cmd) != 0) {
error("failed writing temp file '$path'.");
}
# Avoid chdir when running git here, because the changes
# are in the master git repo, not the srcdir repo.
+ # (Also, if a subdir is involved, we don't want to chdir to
+ # it and only see changes in it.)
# The pre-receive hook already puts us in the right place.
- $no_chdir=1;
+ $git_dir=".";
push @rets, git_parse_changes(git_commit_info($oldrev."..".$newrev));
- $no_chdir=0;
+ $git_dir=undef;
}
return reverse @rets;
}
-sub rcs_preprevert (@) {
- my %params = @_;
- my $rev = $params{rev};
+sub rcs_preprevert ($) {
+ my $rev=shift;
+ my ($sha1) = $rev =~ /^($sha1_pattern)$/; # untaint
+
+ # Examine changes from root of git repo, not from any subdir,
+ # in order to see all changes.
+ my ($subdir, $rootdir) = git_find_root();
+ $git_dir=$rootdir;
+
+ my @commits=git_commit_info($sha1, 1);
+ if (! @commits) {
+ error "unknown commit"; # just in case
+ }
+
+ # git revert will fail on merge commits. Add a nice message.
+ if (exists $commits[0]->{parents} &&
+ @{$commits[0]->{parents}} > 1) {
+ error gettext("you are not allowed to revert a merge");
+ }
+
+ my @ret=git_parse_changes(@commits);
- # Note test_changes expects 'cgi' and 'session' parameters.
- require IkiWiki::Receive;
- IkiWiki::Receive::test_changes(%params, changes =>
- [git_parse_changes(git_commit_info($rev, 1))]);
+ $git_dir=undef;
+ return @ret;
}
-sub rcs_revert (@) {
- # Try to revert the given patch; returns undef on _success_.
- my %params = @_;
- my $rev = $params{rev};
+sub rcs_revert ($) {
+ # Try to revert the given rev; returns undef on _success_.
+ my $rev = shift;
+ my ($sha1) = $rev =~ /^($sha1_pattern)$/; # untaint
- if (run_or_non('git', 'revert', '--no-commit', $rev)) {
- debug "Committing revert for patch '$rev'.";
- rcs_commit_staged(message =>
- sprintf(gettext("This reverts commit %s"), $rev), @_);
+ if (run_or_non('git', 'revert', '--no-commit', $sha1)) {
+ return undef;
}
else {
- # No idea what is actually getting reverted, so all we can
- # do is say we failed.
run_or_die('git', 'reset', '--hard');
- return sprintf(gettext("Failed to revert commit %s"), $rev);
+ return sprintf(gettext("Failed to revert commit %s"), $sha1);
}
}
-sub rcs_showpatch (@) {
- # Show the patch with the given revision id.
- my %params = @_;
- my $rev = $params{rev};
-
- return join "\n", run_or_die('git', 'show', $rev);
-}
-
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