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DiffusionSvnDiffQuery.php
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Wed, Nov 13, 23:05

DiffusionSvnDiffQuery.php
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<?php
/*
* Copyright 2012 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
final class DiffusionSvnDiffQuery extends DiffusionDiffQuery {
protected function executeQuery() {
$drequest = $this->getRequest();
$repository = $drequest->getRepository();
if (!$drequest->getRawCommit()) {
$effective_commit = $this->getEffectiveCommit();
if (!$effective_commit) {
return null;
}
// TODO: Sketchy side effect.
$drequest->setCommit($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 null;
}
$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' => $this->buildContentFuture($old),
'new' => $this->buildContentFuture($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);
$parser = new ArcanistDiffParser();
$try_encoding = $repository->getDetail('encoding');
if ($try_encoding) {
$parser->setTryEncoding($try_encoding);
}
$parser->setDetectBinaryFiles(true);
$arcanist_changes = DiffusionPathChange::convertToArcanistChanges(
$path_changes);
$parser->setChanges($arcanist_changes);
$parser->forcePath($path->getPath());
$changes = $parser->parseDiff($raw_diff);
$change = $changes[$path->getPath()];
$diff = DifferentialDiff::newFromRawChanges(array($change));
$changesets = $diff->getChangesets();
$changeset = reset($changesets);
$this->renderingReference = $drequest->getPath().';'.$drequest->getCommit();
return $changeset;
}
private function buildContentFuture($spec) {
if (!$spec) {
return null;
}
$drequest = $this->getRequest();
$repository = $drequest->getRepository();
list($ref, $rev) = $spec;
return $repository->getRemoteCommandFuture(
'cat %s%s@%d',
$repository->getRemoteURI(),
$ref,
$rev);
}
}

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