[PATCH 1/2] git svn : hook before 'git svn dcommit'

["Frédéric Heitzmann" <frederic.heitzmann@gmail.com>]

The 'pre-svn-dcommit' hook is called before 'git svn dcommit', which aborts
if return value is not zero.

Signed-off-by: Frédéric Heitzmann <frederic.heitzmann@gmail.com>
---
 git-svn.perl |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/git-svn.perl b/git-svn.perl
index 89f83fd..a537858 100755
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -396,6 +396,25 @@ sub init_subdir {
 	$_repository = Git->repository(Repository => $ENV{GIT_DIR});
 }
 
+sub pre_svn_dcommit_hook {
+	my $head = shift;
+
+	my $hook = "$ENV{GIT_DIR}/hooks/pre-svn-dcommit";
+	return 0 if ! -e $hook || ! -x $hook;
+
+	system($hook, $head);
+	if ($? == -1) {
+		print "[pre_svn_dcommit_hook] failed to execute $hook: $!\n";
+		return 1;
+	} elsif ($? & 127) {
+		printf "[pre_svn_dcommit_hook] child died with signal %d, %s coredump\n",
+		($? & 127),  ($? & 128) ? 'with' : 'without';
+		return 1;
+	} else {
+		return $? >> 8;
+	}
+}
+
 sub cmd_clone {
 	my ($url, $path) = @_;
 	if (!defined $path &&
@@ -505,6 +524,8 @@ sub cmd_dcommit {
 		. "or stash them with `git stash'.\n";
 	$head ||= 'HEAD';
 
+	return if pre_svn_dcommit_hook($head);
+
 	my $old_head;
 	if ($head ne 'HEAD') {
 		$old_head = eval {
-- 
1.7.6.133.gd3b55a