X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/339f15d6f4a2d22014e2d38b7459de8a28c5fa8f..b6774bc6afac48e2c0a122647edc1485e7174a6e:/IkiWiki/Plugin/git.pm

diff --git a/IkiWiki/Plugin/git.pm b/IkiWiki/Plugin/git.pm
index 074026ff2..7a6a55495 100644
--- a/IkiWiki/Plugin/git.pm
+++ b/IkiWiki/Plugin/git.pm
@@ -199,12 +199,12 @@ sub create_temp_working_dir ($$) {
 	return $working;
 }
 
-sub safe_git (&@) {
+sub safe_git {
 	# 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, $data_handler, @cmdline) = @_;
+	my %params = @_;
 
 	my $pid = open my $OUT, "-|";
 
@@ -221,7 +221,12 @@ sub safe_git (&@) {
 			chdir $git_dir_stack[0]
 			    or error("cannot chdir to $git_dir_stack[0]: $!");
 		}
-		exec @cmdline or error("Cannot exec '@cmdline': $!");
+
+		if ($params{stdout}) {
+			open(STDOUT, '>&', $params{stdout}) or error("Cannot reopen stdout: $!");
+		}
+
+		exec @{$params{cmdline}} or error("Cannot exec '@{$params{cmdline}}': $!");
 	}
 	# In parent.
 
@@ -236,24 +241,24 @@ sub safe_git (&@) {
 
 		chomp;
 
-		if (! defined $data_handler) {
+		if (! defined $params{data_handler}) {
 			push @lines, $_;
 		}
 		else {
-			last unless $data_handler->($_);
+			last unless $params{data_handler}->($_);
 		}
 	}
 
 	close $OUT;
 
-	$error_handler->("'@cmdline' failed: $!") if $? && $error_handler;
+	$params{error_handler}->("'@{$params{cmdline}}' failed: $!") if $? && $params{error_handler};
 
 	return wantarray ? @lines : ($? == 0);
 }
 # Convenient wrappers.
-sub run_or_die ($@) { safe_git(\&error, undef, @_) }
-sub run_or_cry ($@) { safe_git(sub { warn @_ }, undef, @_) }
-sub run_or_non ($@) { safe_git(undef, undef, @_) }
+sub run_or_die ($@) { safe_git(error_handler => \&error, cmdline => \@_) }
+sub run_or_cry ($@) { safe_git(error_handler => sub { warn @_ }, cmdline => \@_) }
+sub run_or_non ($@) { safe_git(cmdline => \@_) }
 
 sub ensure_committer {
 	if (! length $ENV{GIT_AUTHOR_NAME} || ! length $ENV{GIT_COMMITTER_NAME}) {
@@ -824,7 +829,11 @@ sub rcs_diff ($;$) {
 			if (@lines || $line=~/^diff --git/);
 		return 1;
 	};
-	safe_git(undef, $addlines, "git", "show", $sha1);
+	safe_git(
+		error_handler => undef,
+		data_handler => $addlines,
+		cmdline => ["git", "show", $sha1],
+	);
 	if (wantarray) {
 		return @lines;
 	}
@@ -954,11 +963,11 @@ sub git_parse_changes {
 				die $@ if $@;
 				my $fh;
 				($fh, $path)=File::Temp::tempfile(undef, UNLINK => 1);
-				my $cmd = "cd $git_dir_stack[0] && ".
-				          "git show $detail->{sha1_to} > '$path'";
-				if (system($cmd) != 0) {
-					error("failed writing temp file '$path'.");
-				}
+				safe_git(
+					error_handler => sub { error("failed writing temp file '$path': ".shift."."); },
+					stdout => $fh,
+					cmdline => ['git', 'show', $detail->{sha1_to}],
+				);
 			}
 
 			push @rets, {
@@ -1029,10 +1038,6 @@ sub rcs_preprevert ($) {
 		my $failure;
 		my @ret;
 		eval {
-			IkiWiki::disable_commit_hook();
-			push @undo, sub {
-				IkiWiki::enable_commit_hook();
-			};
 			my $branch = "ikiwiki_revert_${sha1}"; # supposed to be unique
 
 			push @undo, sub {
@@ -1090,7 +1095,7 @@ sub rcs_revert ($) {
 
 	ensure_committer();
 
-	if (run_or_non('git', 'merge', '--ff-only', "ikiwiki_revert_$sha1")) {
+	if (run_or_non('git', 'cherry-pick', '--no-commit', "ikiwiki_revert_$sha1")) {
 		return undef;
 	}
 	else {