public function loadChangesetsForCommit($identifier)
{
$byte_limit = HeraldCommitAdapter::getEnormousByteLimit();
$time_limit = HeraldCommitAdapter::getEnormousTimeLimit();
$vcs = $this->getRepository()->getVersionControlSystem();
switch ($vcs) {
case PhabricatorRepositoryType::REPOSITORY_TYPE_GIT:
case PhabricatorRepositoryType::REPOSITORY_TYPE_MERCURIAL:
// For git and hg, we can use normal commands.
$drequest = DiffusionRequest::newFromDictionary(array('repository' => $this->getRepository(), 'user' => $this->getViewer(), 'commit' => $identifier));
$raw_diff = DiffusionRawDiffQuery::newFromDiffusionRequest($drequest)->setTimeout($time_limit)->setByteLimit($byte_limit)->setLinesOfContext(0)->loadRawDiff();
break;
case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
// TODO: This diff has 3 lines of context, which produces slightly
// incorrect "added file content" and "removed file content" results.
// This may also choke on binaries, but "svnlook diff" does not support
// the "--diff-cmd" flag.
// For subversion, we need to use `svnlook`.
$future = new ExecFuture('svnlook diff -t %s %s', $this->subversionTransaction, $this->subversionRepository);
$future->setTimeout($time_limit);
$future->setStdoutSizeLimit($byte_limit);
$future->setStderrSizeLimit($byte_limit);
list($raw_diff) = $future->resolvex();
break;
default:
throw new Exception(pht("Unknown VCS '%s!'", $vcs));
}
if (strlen($raw_diff) >= $byte_limit) {
throw new Exception(pht('The raw text of this change is enormous (larger than %d ' . 'bytes). Herald can not process it.', $byte_limit));
}
if (!strlen($raw_diff)) {
// If the commit is actually empty, just return no changesets.
return array();
}
$parser = new ArcanistDiffParser();
$changes = $parser->parseDiff($raw_diff);
$diff = DifferentialDiff::newEphemeralFromRawChanges($changes);
return $diff->getChangesets();
}
