/**
* Load a project's head hash
*
* @param GitPHP_Project $project
* @return string head hash
*/
public function LoadHead($project)
{
if (!$project) {
return;
}
$headPointer = trim(file_get_contents($project->GetPath() . '/HEAD'));
if (preg_match('/^([0-9A-Fa-f]{40})$/', $headPointer, $regs)) {
/* Detached HEAD */
return $regs[1];
} else {
if (preg_match('/^ref: (.+)$/', $headPointer, $regs)) {
/* standard pointer to head */
$head = substr($regs[1], strlen('refs/heads/'));
if ($project->GetHeadList()->Exists($head)) {
return $project->GetHeadList()->GetHead($head)->GetHash();
}
}
}
}