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phab/src/applications/diffusion/query/browse/git/DiffusionGitBrowseQuery.php
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DiffusionGitBrowseQuery.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 DiffusionGitBrowseQuery extends DiffusionBrowseQuery {
protected function executeQuery() {
$drequest = $this->getRequest();
$repository = $drequest->getRepository();
$path = $drequest->getPath();
$commit = $drequest->getCommit();
if ($path == '') {
// Fast path to improve the performance of the repository view; we know
// the root is always a tree at any commit and always exists.
$stdout = 'tree';
} else {
try {
list($stdout) = $repository->execxLocalCommand(
'cat-file -t %s:%s',
$commit,
$path);
} catch (CommandException $e) {
$stderr = $e->getStdErr();
if (preg_match('/^fatal: Not a valid object name/', $stderr)) {
// Grab two logs, since the first one is when the object was deleted.
list($stdout) = $repository->execxLocalCommand(
'log -n2 --format="%%H" %s -- %s',
$commit,
$path);
$stdout = trim($stdout);
if ($stdout) {
$commits = explode("\n", $stdout);
$this->reason = self::REASON_IS_DELETED;
$this->deletedAtCommit = idx($commits, 0);
$this->existedAtCommit = idx($commits, 1);
return array();
}
$this->reason = self::REASON_IS_NONEXISTENT;
return array();
} else {
throw $e;
}
}
}
if (trim($stdout) == 'blob') {
$this->reason = self::REASON_IS_FILE;
return array();
}
if ($this->shouldOnlyTestValidity()) {
return true;
}
list($stdout) = $repository->execxLocalCommand(
'ls-tree -z -l %s:%s',
$commit,
$path);
$submodules = array();
$results = array();
foreach (explode("\0", rtrim($stdout)) as $line) {
// NOTE: Limit to 5 components so we parse filenames with spaces in them
// correctly.
list($mode, $type, $hash, $size, $name) = preg_split('/\s+/', $line, 5);
$result = new DiffusionRepositoryPath();
if ($type == 'tree') {
$file_type = DifferentialChangeType::FILE_DIRECTORY;
} else if ($type == 'commit') {
$file_type = DifferentialChangeType::FILE_SUBMODULE;
$submodules[] = $result;
} else {
$mode = intval($mode, 8);
if (($mode & 0120000) == 0120000) {
$file_type = DifferentialChangeType::FILE_SYMLINK;
} else {
$file_type = DifferentialChangeType::FILE_NORMAL;
}
}
$result->setFullPath($path.$name);
$result->setPath($name);
$result->setHash($hash);
$result->setFileType($file_type);
$result->setFileSize($size);
$results[] = $result;
}
// If we identified submodules, lookup the module info at this commit to
// find their source URIs.
if ($submodules) {
// NOTE: We need to read the file out of git and write it to a temporary
// location because "git config -f" doesn't accept a "commit:path"-style
// argument.
list($contents) = $repository->execxLocalCommand(
'cat-file blob %s:.gitmodules',
$commit);
$tmp = new TempFile();
Filesystem::writeFile($tmp, $contents);
list($module_info) = $repository->execxLocalCommand(
'config -l -f %s',
$tmp);
$dict = array();
$lines = explode("\n", trim($module_info));
foreach ($lines as $line) {
list($key, $value) = explode('=', $line, 2);
$parts = explode('.', $key);
$dict[$key] = $value;
}
foreach ($submodules as $path) {
$full_path = $path->getFullPath();
$key = $dict['submodule.'.$full_path.'.url'];
if (isset($dict[$key])) {
$path->setExternalURI($key);
}
}
}
return $results;
}
}
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