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phab/src/applications/diffusion/conduit/ConduitAPI_diffusion_diffquery_Method.php
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ConduitAPI_diffusion_diffquery_Method.php
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<?php
/**
* @group conduit
*/
final class ConduitAPI_diffusion_diffquery_Method
extends ConduitAPI_diffusion_abstractquery_Method {
private $effectiveCommit;
public function getMethodDescription() {
return
'Get diff information from a repository for a specific path at an '.
'(optional) commit.';
}
public function defineReturnType() {
return 'array';
}
protected function defineCustomParamTypes() {
return array(
'path' => 'required string',
'commit' => 'optional string',
);
}
protected function getResult(ConduitAPIRequest $request) {
$result = parent::getResult($request);
return array(
'changes' => mpull($result, 'toDictionary'),
'effectiveCommit' => $this->getEffectiveCommit($request));
}
protected function getGitResult(ConduitAPIRequest $request) {
return $this->getGitOrMercurialResult($request);
}
protected function getMercurialResult(ConduitAPIRequest $request) {
return $this->getGitOrMercurialResult($request);
}
/**
* NOTE: We have to work particularly hard for SVN as compared to other VCS.
* That's okay but means this shares little code with the other VCS.
*/
protected function getSVNResult(ConduitAPIRequest $request) {
$drequest = $this->getDiffusionRequest();
$repository = $drequest->getRepository();
$effective_commit = $this->getEffectiveCommit($request);
if (!$effective_commit) {
return $this->getEmptyResult();
}
$drequest = clone $drequest;
$drequest->setCommit($effective_commit);
$path_change_query = DiffusionPathChangeQuery::newFromDiffusionRequest(
$drequest);
$path_changes = $path_change_query->loadChanges();
$path = null;
foreach ($path_changes as $change) {
if ($change->getPath() == $drequest->getPath()) {
$path = $change;
}
}
if (!$path) {
return $this->getEmptyResult();
}
$change_type = $path->getChangeType();
switch ($change_type) {
case DifferentialChangeType::TYPE_MULTICOPY:
case DifferentialChangeType::TYPE_DELETE:
if ($path->getTargetPath()) {
$old = array(
$path->getTargetPath(),
$path->getTargetCommitIdentifier());
} else {
$old = array($path->getPath(), $path->getCommitIdentifier() - 1);
}
$old_name = $path->getPath();
$new_name = '';
$new = null;
break;
case DifferentialChangeType::TYPE_ADD:
$old = null;
$new = array($path->getPath(), $path->getCommitIdentifier());
$old_name = '';
$new_name = $path->getPath();
break;
case DifferentialChangeType::TYPE_MOVE_HERE:
case DifferentialChangeType::TYPE_COPY_HERE:
$old = array(
$path->getTargetPath(),
$path->getTargetCommitIdentifier());
$new = array($path->getPath(), $path->getCommitIdentifier());
$old_name = $path->getTargetPath();
$new_name = $path->getPath();
break;
case DifferentialChangeType::TYPE_MOVE_AWAY:
$old = array(
$path->getPath(),
$path->getCommitIdentifier() - 1);
$old_name = $path->getPath();
$new_name = null;
$new = null;
break;
default:
$old = array($path->getPath(), $path->getCommitIdentifier() - 1);
$new = array($path->getPath(), $path->getCommitIdentifier());
$old_name = $path->getPath();
$new_name = $path->getPath();
break;
}
$futures = array(
'old' => $this->buildSVNContentFuture($old),
'new' => $this->buildSVNContentFuture($new),
);
$futures = array_filter($futures);
foreach (Futures($futures) as $key => $future) {
$stdout = '';
try {
list($stdout) = $future->resolvex();
} catch (CommandException $e) {
if ($path->getFileType() != DifferentialChangeType::FILE_DIRECTORY) {
throw $e;
}
}
$futures[$key] = $stdout;
}
$old_data = idx($futures, 'old', '');
$new_data = idx($futures, 'new', '');
$engine = new PhabricatorDifferenceEngine();
$engine->setOldName($old_name);
$engine->setNewName($new_name);
$raw_diff = $engine->generateRawDiffFromFileContent($old_data, $new_data);
$arcanist_changes = DiffusionPathChange::convertToArcanistChanges(
$path_changes);
$parser = $this->getDefaultParser();
$parser->setChanges($arcanist_changes);
$parser->forcePath($path->getPath());
$changes = $parser->parseDiff($raw_diff);
$change = $changes[$path->getPath()];
return array($change);
}
private function getEffectiveCommit(ConduitAPIRequest $request) {
if ($this->effectiveCommit === null) {
$drequest = $this->getDiffusionRequest();
$user = $request->getUser();
$commit = null;
$conduit_result = DiffusionQuery::callConduitWithDiffusionRequest(
$user,
$drequest,
'diffusion.lastmodifiedquery',
array(
'commit' => $drequest->getCommit(),
'path' => $drequest->getPath()));
$c_dict = $conduit_result['commit'];
if ($c_dict) {
$commit = PhabricatorRepositoryCommit::newFromDictionary($c_dict);
}
if (!$commit) {
// TODO: Improve error messages here.
return null;
}
$this->effectiveCommit = $commit->getCommitIdentifier();
}
return $this->effectiveCommit;
}
private function buildSVNContentFuture($spec) {
if (!$spec) {
return null;
}
$drequest = $this->getDiffusionRequest();
$repository = $drequest->getRepository();
list($ref, $rev) = $spec;
return $repository->getRemoteCommandFuture(
'cat %s',
$repository->getSubversionPathURI($ref, $rev));
}
private function getGitOrMercurialResult(ConduitAPIRequest $request) {
$drequest = $this->getDiffusionRequest();
$repository = $drequest->getRepository();
$effective_commit = $this->getEffectiveCommit($request);
if (!$effective_commit) {
return $this->getEmptyResult(1);
}
// TODO: This side effect is kind of sketchy.
$drequest->setCommit($effective_commit);
$raw_query = DiffusionRawDiffQuery::newFromDiffusionRequest($drequest);
$raw_diff = $raw_query->loadRawDiff();
if (!$raw_diff) {
return $this->getEmptyResult(2);
}
$parser = $this->getDefaultParser();
$changes = $parser->parseDiff($raw_diff);
return $changes;
}
private function getDefaultParser() {
$drequest = $this->getDiffusionRequest();
$repository = $drequest->getRepository();
$parser = new ArcanistDiffParser();
$try_encoding = $repository->getDetail('encoding');
if ($try_encoding) {
$parser->setTryEncoding($try_encoding);
}
$parser->setDetectBinaryFiles(true);
return $parser;
}
private function getEmptyResult() {
return array();
}
}
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