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phorge/src/applications/diffusion/query/lowlevel/DiffusionLowLevelParentsQuery.php
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DiffusionLowLevelParentsQuery.php
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<?php
final class DiffusionLowLevelParentsQuery
extends DiffusionLowLevelQuery {
private $identifier;
public function withIdentifier($identifier) {
$this->identifier = $identifier;
return $this;
}
protected function executeQuery() {
if (!strlen($this->identifier)) {
throw new PhutilInvalidStateException('withIdentifier');
}
$type = $this->getRepository()->getVersionControlSystem();
switch ($type) {
case PhabricatorRepositoryType::REPOSITORY_TYPE_GIT:
$result = $this->loadGitParents();
break;
case PhabricatorRepositoryType::REPOSITORY_TYPE_MERCURIAL:
$result = $this->loadMercurialParents();
break;
case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
$result = $this->loadSubversionParents();
break;
default:
throw new Exception(pht('Unsupported repository type "%s"!', $type));
}
return $result;
}
private function loadGitParents() {
$repository = $this->getRepository();
list($stdout) = $repository->execxLocalCommand(
'log -n 1 %s %s --',
'--format=%P',
gitsprintf('%s', $this->identifier));
return preg_split('/\s+/', trim($stdout));
}
private function loadMercurialParents() {
$repository = $this->getRepository();
$hg_analyzer = PhutilBinaryAnalyzer::getForBinary('hg');
if ($hg_analyzer->isMercurialTemplatePnodeAvailable()) {
$hg_log_template = '{p1.node} {p2.node}';
} else {
$hg_log_template = '{p1node} {p2node}';
}
list($stdout) = $repository->execxLocalCommand(
'log --limit 1 --template %s --rev %s',
$hg_log_template,
$this->identifier);
$hashes = preg_split('/\s+/', trim($stdout));
foreach ($hashes as $key => $value) {
// We get 40-character hashes but also get the "000000..." hash for
// missing parents; ignore it.
if (preg_match('/^0+\z/', $value)) {
unset($hashes[$key]);
}
}
return $hashes;
}
private function loadSubversionParents() {
$repository = $this->getRepository();
$identifier = $this->identifier;
$refs = id(new DiffusionCachedResolveRefsQuery())
->setRepository($repository)
->withRefs(array($identifier))
->execute();
if (!$refs) {
throw new Exception(
pht(
'No commit "%s" in this repository.',
$identifier));
}
$n = (int)$identifier;
if ($n > 1) {
$ids = array($n - 1);
} else {
$ids = array();
}
return $ids;
}
}

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