use strict;
use IkiWiki;
use Encode;
+use URI::Escape q{uri_escape_utf8};
use open qw{:utf8 :std};
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 $no_chdir=0;
sub import {
hook(type => "checkconfig", id => "git", call => \&checkconfig);
hook(type => "rcs", id => "rcs_recentchanges", call => \&rcs_recentchanges);
hook(type => "rcs", id => "rcs_diff", call => \&rcs_diff);
hook(type => "rcs", id => "rcs_getctime", call => \&rcs_getctime);
+ hook(type => "rcs", id => "rcs_getmtime", call => \&rcs_getmtime);
hook(type => "rcs", id => "rcs_receive", call => \&rcs_receive);
+ hook(type => "rcs", id => "rcs_preprevert", call => \&rcs_preprevert);
+ hook(type => "rcs", id => "rcs_revert", call => \&rcs_revert);
+ hook(type => "rcs", id => "rcs_find_changes", call => \&rcs_find_changes);
+ hook(type => "rcs", id => "rcs_get_current_rev", call => \&rcs_get_current_rev);
}
sub checkconfig () {
push @{$config{wrappers}}, {
wrapper => $config{git_wrapper},
wrappermode => (defined $config{git_wrappermode} ? $config{git_wrappermode} : "06755"),
+ wrapper_background_command => $config{git_wrapper_background_command},
};
}
if (defined $config{git_test_receive_wrapper} &&
- length $config{git_test_receive_wrapper}) {
+ length $config{git_test_receive_wrapper} &&
+ defined $config{untrusted_committers} &&
+ @{$config{untrusted_committers}}) {
push @{$config{wrappers}}, {
test_receive => 1,
wrapper => $config{git_test_receive_wrapper},
wrappermode => (defined $config{git_wrappermode} ? $config{git_wrappermode} : "06755"),
};
}
+
+ # Avoid notes, parser does not handle and they only slow things down.
+ $ENV{GIT_NOTES_REF}="";
# Run receive test only if being called by the wrapper, and not
# when generating same.
plugin => {
safe => 0, # rcs plugin
rebuild => undef,
+ section => "rcs",
},
git_wrapper => {
type => "string",
safe => 0, # file
rebuild => 0,
},
+ git_wrapper_background_command => {
+ type => "string",
+ example => "git push github",
+ description => "shell command for git_wrapper to run, in the background",
+ safe => 0, # command
+ rebuild => 0,
+ },
git_wrappermode => {
type => "string",
example => '06755',
},
historyurl => {
type => "string",
- example => "http://git.example.com/gitweb.cgi?p=wiki.git;a=history;f=[[file]]",
+ example => "http://git.example.com/gitweb.cgi?p=wiki.git;a=history;f=[[file]];hb=HEAD",
description => "gitweb url to show file history ([[file]] substituted)",
safe => 1,
rebuild => 1,
}
}
+my $git_dir=undef;
+my $prefix=undef;
+
+sub in_git_dir ($$) {
+ $git_dir=shift;
+ my @ret=shift->();
+ $git_dir=undef;
+ $prefix=undef;
+ return @ret;
+}
+
sub safe_git (&@) {
- # Start a child process safely without resorting /bin/sh.
- # Return command output or success state (in scalar context).
+ # Start a child process safely without resorting to /bin/sh.
+ # Returns command output (in list content) or success state
+ # (in scalar context), or runs the specified data handler.
- my ($error_handler, @cmdline) = @_;
+ my ($error_handler, $data_handler, @cmdline) = @_;
my $pid = open my $OUT, "-|";
if (!$pid) {
# In child.
# Git commands want to be in wc.
- if (! $no_chdir) {
+ if (! defined $git_dir) {
chdir $config{srcdir}
- or error("Cannot chdir to $config{srcdir}: $!");
+ or error("cannot chdir to $config{srcdir}: $!");
+ }
+ else {
+ chdir $git_dir
+ or error("cannot chdir to $git_dir: $!");
}
exec @cmdline or error("Cannot exec '@cmdline': $!");
}
chomp;
- push @lines, $_;
+ if (! defined $data_handler) {
+ push @lines, $_;
+ }
+ else {
+ last unless $data_handler->($_);
+ }
}
close $OUT;
return wantarray ? @lines : ($? == 0);
}
# Convenient wrappers.
-sub run_or_die ($@) { safe_git(\&error, @_) }
-sub run_or_cry ($@) { safe_git(sub { warn @_ }, @_) }
-sub run_or_non ($@) { safe_git(undef, @_) }
+sub run_or_die ($@) { safe_git(\&error, undef, @_) }
+sub run_or_cry ($@) { safe_git(sub { warn @_ }, undef, @_) }
+sub run_or_non ($@) { safe_git(undef, undef, @_) }
+
+sub ensure_committer {
+ if (! length $ENV{GIT_AUTHOR_NAME} || ! length $ENV{GIT_COMMITTER_NAME}) {
+ my $name = join('', run_or_non("git", "config", "user.name"));
+ if (! length $name) {
+ run_or_die("git", "config", "user.name", "IkiWiki");
+ }
+ }
+ if (! length $ENV{GIT_AUTHOR_EMAIL} || ! length $ENV{GIT_COMMITTER_EMAIL}) {
+ my $email = join('', run_or_non("git", "config", "user.email"));
+ if (! length $email) {
+ run_or_die("git", "config", "user.email", "ikiwiki.info");
+ }
+ }
+}
sub merge_past ($$$) {
# Unlike with Subversion, Git cannot make a 'svn merge -rN:M file'.
my @undo; # undo stack for cleanup in case of an error
my $conflict; # file content with conflict markers
+ ensure_committer();
+
eval {
# Hide local changes from Git by renaming the modified file.
# Relative paths must be converted to absolute for renaming.
return $conflict;
}
-sub parse_diff_tree ($@) {
+sub decode_git_file ($) {
+ my $file=shift;
+
+ # git does not output utf-8 filenames, but instead
+ # double-quotes them with the utf-8 characters
+ # escaped as \nnn\nnn.
+ if ($file =~ m/^"(.*)"$/) {
+ ($file=$1) =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
+ }
+
+ # strip prefix if in a subdir
+ if (! defined $prefix) {
+ ($prefix) = run_or_die('git', 'rev-parse', '--show-prefix');
+ if (! defined $prefix) {
+ $prefix="";
+ }
+ }
+ $file =~ s/^\Q$prefix\E//;
+
+ return decode("utf8", $file);
+}
+
+sub parse_diff_tree ($) {
# Parse the raw diff tree chunk and return the info hash.
# See git-diff-tree(1) for the syntax.
-
- my ($prefix, $dt_ref) = @_;
+ my $dt_ref = shift;
# End of stream?
- return if !defined @{ $dt_ref } ||
- !defined @{ $dt_ref }[0] || !length @{ $dt_ref }[0];
+ return if ! @{ $dt_ref } ||
+ !defined $dt_ref->[0] || !length $dt_ref->[0];
my %ci;
# Header line.
$ci{ "${who}_epoch" } = $epoch;
$ci{ "${who}_tz" } = $tz;
- if ($name =~ m/^[^<]+\s+<([^@>]+)/) {
- $ci{"${who}_username"} = $1;
+ if ($name =~ m/^([^<]+)\s+<([^@>]+)/) {
+ $ci{"${who}_name"} = $1;
+ $ci{"${who}_username"} = $2;
}
elsif ($name =~ m/^([^<]+)\s+<>$/) {
$ci{"${who}_username"} = $1;
my $sha1_to = shift(@tmp);
my $status = shift(@tmp);
- # git does not output utf-8 filenames, but instead
- # double-quotes them with the utf-8 characters
- # escaped as \nnn\nnn.
- if ($file =~ m/^"(.*)"$/) {
- ($file=$1) =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
- }
- $file =~ s/^\Q$prefix\E//;
if (length $file) {
push @{ $ci{'details'} }, {
- 'file' => decode("utf8", $file),
+ 'file' => decode_git_file($file),
'sha1_from' => $sha1_from[0],
'sha1_to' => $sha1_to,
'mode_from' => $mode_from[0],
my @raw_lines = run_or_die('git', 'log', @opts,
'--pretty=raw', '--raw', '--abbrev=40', '--always', '-c',
- '-r', $sha1, '--', '.');
- my ($prefix) = run_or_die('git', 'rev-parse', '--show-prefix');
+ '-r', $sha1, '--no-renames', '--', '.');
my @ci;
- while (my $parsed = parse_diff_tree(($prefix or ""), \@raw_lines)) {
+ while (my $parsed = parse_diff_tree(\@raw_lines)) {
push @ci, $parsed;
}
return wantarray ? @ci : $ci[0];
}
-sub git_sha1 (;$) {
- # Return head sha1sum (of given file).
- my $file = shift || q{--};
+sub rcs_find_changes ($) {
+ my $oldrev=shift;
+
+ # Note that git log will sometimes show files being added that
+ # don't exist. Particularly, git merge -s ours can result in a
+ # merge commit where some files were not really added.
+ # This is why the code below verifies that the files really
+ # exist.
+ my @raw_lines = run_or_die('git', 'log',
+ '--pretty=raw', '--raw', '--abbrev=40', '--always', '-c',
+ '--no-renames', , '--reverse',
+ '-r', "$oldrev..HEAD", '--', '.');
+
+ # Due to --reverse, we see changes in chronological order.
+ my %changed;
+ my %deleted;
+ my $nullsha = 0 x 40;
+ my $newrev=$oldrev;
+ while (my $ci = parse_diff_tree(\@raw_lines)) {
+ $newrev=$ci->{sha1};
+ foreach my $i (@{$ci->{details}}) {
+ my $file=$i->{file};
+ if ($i->{sha1_to} eq $nullsha) {
+ if (! -e "$config{srcdir}/$file") {
+ delete $changed{$file};
+ $deleted{$file}=1;
+ }
+ }
+ else {
+ if (-e "$config{srcdir}/$file") {
+ delete $deleted{$file};
+ $changed{$file}=1;
+ }
+ }
+ }
+ }
+ return (\%changed, \%deleted, $newrev);
+}
+
+sub git_sha1_file ($) {
+ my $file=shift;
+ git_sha1("--", $file);
+}
+
+sub git_sha1 (@) {
# Ignore error since a non-existing file might be given.
my ($sha1) = run_or_non('git', 'rev-list', '--max-count=1', 'HEAD',
- '--', $file);
- if ($sha1) {
+ '--', @_);
+ if (defined $sha1) {
($sha1) = $sha1 =~ m/($sha1_pattern)/; # sha1 is untainted now
- } else { debug("Empty sha1sum for '$file'.") }
- return defined $sha1 ? $sha1 : q{};
+ }
+ return defined $sha1 ? $sha1 : '';
+}
+
+sub rcs_get_current_rev () {
+ git_sha1();
}
sub rcs_update () {
# Update working directory.
+ ensure_committer();
+
if (length $config{gitorigin_branch}) {
- run_or_cry('git', 'pull', $config{gitorigin_branch});
+ run_or_cry('git', 'pull', '--prune', $config{gitorigin_branch});
}
}
# This will be later used in rcs_commit if a merge is required.
my ($file) = @_;
- return git_sha1($file);
+ return git_sha1_file($file);
}
-sub rcs_commit ($$$;$$) {
+sub rcs_commit (@) {
# Try to commit the page; returns undef on _success_ and
# a version of the page with the rcs's conflict markers on
# failure.
-
- my ($file, $message, $rcstoken, $user, $ipaddr) = @_;
+ my %params=@_;
# Check to see if the page has been changed by someone else since
# rcs_prepedit was called.
- my $cur = git_sha1($file);
- my ($prev) = $rcstoken =~ /^($sha1_pattern)$/; # untaint
+ my $cur = git_sha1_file($params{file});
+ my ($prev) = $params{token} =~ /^($sha1_pattern)$/; # untaint
if (defined $cur && defined $prev && $cur ne $prev) {
- my $conflict = merge_past($prev, $file, $dummy_commit_msg);
+ my $conflict = merge_past($prev, $params{file}, $dummy_commit_msg);
return $conflict if defined $conflict;
}
- rcs_add($file);
- return rcs_commit_staged($message, $user, $ipaddr);
+ return rcs_commit_helper(@_);
}
-sub rcs_commit_staged ($$$) {
+sub rcs_commit_staged (@) {
# Commits all staged changes. Changes can be staged using rcs_add,
# rcs_remove, and rcs_rename.
- my ($message, $user, $ipaddr)=@_;
+ return rcs_commit_helper(@_);
+}
- # Set the commit author and email to the web committer.
+sub rcs_commit_helper (@) {
+ my %params=@_;
+
my %env=%ENV;
- if (defined $user || defined $ipaddr) {
- my $u=encode_utf8(defined $user ? $user : $ipaddr);
- $ENV{GIT_AUTHOR_NAME}=$u;
- $ENV{GIT_AUTHOR_EMAIL}="$u\@web";
+
+ if (defined $params{session}) {
+ # Set the commit author and email based on web session info.
+ my $u;
+ if (defined $params{session}->param("name")) {
+ $u=$params{session}->param("name");
+ }
+ elsif (defined $params{session}->remote_addr()) {
+ $u=$params{session}->remote_addr();
+ }
+ if (defined $u) {
+ $u=encode_utf8(IkiWiki::cloak($u));
+ $ENV{GIT_AUTHOR_NAME}=$u;
+ }
+ if (defined $params{session}->param("nickname")) {
+ $u=encode_utf8($params{session}->param("nickname"));
+ $u=~s/\s+/_/g;
+ $u=~s/[^-_0-9[:alnum:]]+//g;
+ }
+ if (defined $u) {
+ $ENV{GIT_AUTHOR_EMAIL}="$u\@web";
+ }
}
- $message = IkiWiki::possibly_foolish_untaint($message);
+ ensure_committer();
+
+ $params{message} = IkiWiki::possibly_foolish_untaint($params{message});
my @opts;
- if ($message !~ /\S/) {
+ if ($params{message} !~ /\S/) {
# Force git to allow empty commit messages.
# (If this version of git supports it.)
my ($version)=`git --version` =~ /git version (.*)/;
- if ($version ge "1.5.4") {
+ if ($version ge "1.7.8") {
+ push @opts, "--allow-empty-message", "--no-edit";
+ }
+ if ($version ge "1.7.2") {
+ push @opts, "--allow-empty-message";
+ }
+ elsif ($version ge "1.5.4") {
push @opts, '--cleanup=verbatim';
}
else {
- $message.=".";
+ $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', $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});
+ run_or_cry('git', 'push', $config{gitorigin_branch}, $config{gitmaster_branch});
}
}
my ($file) = @_;
- run_or_cry('git', 'add', $file);
+ ensure_committer();
+
+ run_or_cry('git', 'add', '--', $file);
}
sub rcs_remove ($) {
my ($file) = @_;
- run_or_cry('git', 'rm', '-f', $file);
+ ensure_committer();
+
+ run_or_cry('git', 'rm', '-f', '--', $file);
}
sub rcs_rename ($$) {
my ($src, $dest) = @_;
- run_or_cry('git', 'mv', '-f', $src, $dest);
+ ensure_committer();
+
+ run_or_cry('git', 'mv', '-f', '--', $src, $dest);
}
sub rcs_recentchanges ($) {
my @pages;
foreach my $detail (@{ $ci->{'details'} }) {
my $file = $detail->{'file'};
+ my $efile = join('/',
+ map { uri_escape_utf8($_) } split('/', $file)
+ );
my $diffurl = defined $config{'diffurl'} ? $config{'diffurl'} : "";
- $diffurl =~ s/\[\[file\]\]/$file/go;
+ $diffurl =~ s/\[\[file\]\]/$efile/go;
$diffurl =~ s/\[\[sha1_parent\]\]/$ci->{'parent'}/go;
$diffurl =~ s/\[\[sha1_from\]\]/$detail->{'sha1_from'}/go;
$diffurl =~ s/\[\[sha1_to\]\]/$detail->{'sha1_to'}/go;
my $user=$ci->{'author_username'};
my $web_commit = ($ci->{'author'} =~ /\@web>/);
-
+ my $nickname;
+
+ # Set nickname only if a non-url author_username is available,
+ # and author_name is an url.
+ if ($user !~ /:\/\// && defined $ci->{'author_name'} &&
+ $ci->{'author_name'} =~ /:\/\//) {
+ $nickname=$user;
+ $user=$ci->{'author_name'};
+ }
+
# compatability code for old web commit messages
if (! $web_commit &&
defined $messages[0] &&
push @rets, {
rev => $sha1,
user => $user,
+ nickname => $nickname,
committype => $web_commit ? "web" : "git",
when => $when,
message => [@messages],
return @rets;
}
-sub rcs_diff ($) {
+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;
}
}
}
+{
+my %time_cache;
+
+sub findtimes ($$) {
+ my $file=shift;
+ my $id=shift; # 0 = mtime ; 1 = ctime
+
+ if (! keys %time_cache) {
+ my $date;
+ foreach my $line (run_or_die('git', 'log',
+ '--pretty=format:%at',
+ '--name-only', '--relative')) {
+ if (! defined $date && $line =~ /^(\d+)$/) {
+ $date=$line;
+ }
+ elsif (! length $line) {
+ $date=undef;
+ }
+ else {
+ my $f=decode_git_file($line);
+
+ if (! $time_cache{$f}) {
+ $time_cache{$f}[0]=$date; # mtime
+ }
+ $time_cache{$f}[1]=$date; # ctime
+ }
+ }
+ }
+
+ return exists $time_cache{$file} ? $time_cache{$file}[$id] : 0;
+}
+
+}
+
sub rcs_getctime ($) {
my $file=shift;
- # Remove srcdir prefix
- $file =~ s/^\Q$config{srcdir}\E\/?//;
- my @raw_lines = run_or_die('git', 'log', '--reverse', '--follow',
- '--pretty=raw', '--raw', '--abbrev=40', '--always', '-c',
- '-r', '--', $file);
- my $first = parse_diff_tree("", \@raw_lines);
- my $ctime = $first->{'author_epoch'};
- debug("ctime for '$file': ". localtime($ctime));
+ return findtimes($file, 1);
+}
+
+sub rcs_getmtime ($) {
+ my $file=shift;
- return $ctime;
+ return findtimes($file, 0);
}
-sub rcs_receive () {
+{
+my $ret;
+sub git_find_root {
# The wiki may not be the only thing in the git repo.
# Determine if it is in a subdirectory by examining the srcdir,
# and its parents, looking for the .git directory.
+
+ return @$ret if defined $ret;
+
my $subdir="";
my $dir=$config{srcdir};
while (! -d "$dir/.git") {
}
}
+ $ret=[$subdir, $dir];
+ return @$ret;
+}
+
+}
+
+sub git_parse_changes {
+ my $reverted = shift;
+ my @changes = @_;
+
+ my ($subdir, $rootdir) = git_find_root();
+ my @rets;
+ foreach my $ci (@changes) {
+ foreach my $detail (@{ $ci->{'details'} }) {
+ my $file = $detail->{'file'};
+
+ # check that all changed files are in the subdir
+ if (length $subdir &&
+ ! ($file =~ s/^\Q$subdir\E//)) {
+ error sprintf(gettext("you are not allowed to change %s"), $file);
+ }
+
+ my ($action, $mode, $path);
+ if ($detail->{'status'} =~ /^[M]+\d*$/) {
+ $action="change";
+ $mode=$detail->{'mode_to'};
+ }
+ elsif ($detail->{'status'} =~ /^[AM]+\d*$/) {
+ $action= $reverted ? "remove" : "add";
+ $mode=$detail->{'mode_to'};
+ }
+ elsif ($detail->{'status'} =~ /^[DAM]+\d*/) {
+ $action= $reverted ? "add" : "remove";
+ $mode=$detail->{'mode_from'};
+ }
+ else {
+ error "unknown status ".$detail->{'status'};
+ }
+
+ # test that the file mode is ok
+ if ($mode !~ /^100[64][64][64]$/) {
+ error sprintf(gettext("you cannot act on a file with mode %s"), $mode);
+ }
+ if ($action eq "change") {
+ if ($detail->{'mode_from'} ne $detail->{'mode_to'}) {
+ error gettext("you are not allowed to change file modes");
+ }
+ }
+
+ # extract attachment to temp file
+ if (($action eq 'add' || $action eq 'change') &&
+ ! pagetype($file)) {
+ eval q{use File::Temp};
+ die $@ if $@;
+ my $fh;
+ ($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'.");
+ }
+ }
+
+ push @rets, {
+ file => $file,
+ action => $action,
+ path => $path,
+ };
+ }
+ }
+
+ return @rets;
+}
+
+sub rcs_receive () {
my @rets;
while (<>) {
chomp;
my ($oldrev, $newrev, $refname) = split(' ', $_, 3);
-
+
# only allow changes to gitmaster_branch
if ($refname !~ /^refs\/heads\/\Q$config{gitmaster_branch}\E$/) {
error sprintf(gettext("you are not allowed to change %s"), $refname);
}
-
+
# Avoid chdir when running git here, because the changes
# are in the master git repo, not the srcdir repo.
- # The pre-recieve hook already puts us in the right place.
- $no_chdir=1;
- my @changes=git_commit_info($oldrev."..".$newrev);
- $no_chdir=0;
-
- foreach my $ci (@changes) {
- foreach my $detail (@{ $ci->{'details'} }) {
- my $file = $detail->{'file'};
-
- # check that all changed files are in the
- # subdir
- if (length $subdir &&
- ! ($file =~ s/^\Q$subdir\E//)) {
- error sprintf(gettext("you are not allowed to change %s"), $file);
- }
+ # (Also, if a subdir is involved, we don't want to chdir to
+ # it and only see changes in it.)
+ # The pre-receive hook already puts us in the right place.
+ in_git_dir(".", sub {
+ push @rets, git_parse_changes(0, git_commit_info($oldrev."..".$newrev));
+ });
+ }
- my ($action, $mode, $path);
- if ($detail->{'status'} =~ /^[M]+\d*$/) {
- $action="change";
- $mode=$detail->{'mode_to'};
- }
- elsif ($detail->{'status'} =~ /^[AM]+\d*$/) {
- $action="add";
- $mode=$detail->{'mode_to'};
- }
- elsif ($detail->{'status'} =~ /^[DAM]+\d*/) {
- $action="remove";
- $mode=$detail->{'mode_from'};
- }
- else {
- error "unknown status ".$detail->{'status'};
- }
-
- # test that the file mode is ok
- if ($mode !~ /^100[64][64][64]$/) {
- error sprintf(gettext("you cannot act on a file with mode %s"), $mode);
- }
- if ($action eq "change") {
- if ($detail->{'mode_from'} ne $detail->{'mode_to'}) {
- error gettext("you are not allowed to change file modes");
- }
- }
-
- # extract attachment to temp file
- if (($action eq 'add' || $action eq 'change') &&
- ! pagetype($file)) {
- eval q{use File::Temp};
- die $@ if $@;
- my $fh;
- ($fh, $path)=File::Temp::tempfile("XXXXXXXXXX", UNLINK => 1);
- if (system("git show ".$detail->{sha1_to}." > '$path'") != 0) {
- error("failed writing temp file");
- }
- }
+ return reverse @rets;
+}
- push @rets, {
- file => $file,
- action => $action,
- path => $path,
- };
- }
+sub rcs_preprevert ($) {
+ 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, $rootdir) = git_find_root();
+ in_git_dir($rootdir, sub {
+ my @commits=git_commit_info($sha1, 1);
+
+ if (! @commits) {
+ error "unknown commit"; # just in case
}
- }
- return reverse @rets;
+ # 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");
+ }
+
+ git_parse_changes(1, @commits);
+ });
+}
+
+sub rcs_revert ($) {
+ # Try to revert the given rev; returns undef on _success_.
+ my $rev = shift;
+ my ($sha1) = $rev =~ /^($sha1_pattern)$/; # untaint
+
+ ensure_committer();
+
+ if (run_or_non('git', 'revert', '--no-commit', $sha1)) {
+ return undef;
+ }
+ else {
+ run_or_die('git', 'reset', '--hard');
+ return sprintf(gettext("Failed to revert commit %s"), $sha1);
+ }
}
1