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DiffusionMercurialBrowseQuery.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 DiffusionMercurialBrowseQuery extends DiffusionBrowseQuery {
protected function executeQuery() {
$drequest = $this->getRequest();
$repository = $drequest->getRepository();
$path = $drequest->getPath();
$commit = $drequest->getStableCommitName();
// TODO: This is a really really awful mess but Mercurial doesn't offer
// an equivalent of "git ls-files -- directory". If it's any comfort, this
// is what "hgweb" does too, see:
//
// http://selenic.com/repo/hg/file/91dc8878f888/mercurial/hgweb/webcommands.py#l320
//
// derp derp derp derp
//
// Anyway, figure out what's in this path by applying massive amounts
// of brute force.
list($entire_manifest) = $repository->execxLocalCommand(
'manifest --rev %s',
$commit);
$entire_manifest = explode("\n", $entire_manifest);
$results = array();
$match_against = trim($path, '/');
$match_len = strlen($match_against);
// For the root, don't trim. For other paths, trim the "/" after we match.
// We need this because Mercurial's canonical paths have no leading "/",
// but ours do.
$trim_len = $match_len ? $match_len + 1 : 0;
foreach ($entire_manifest as $path) {
if (strncmp($path, $match_against, $match_len)) {
continue;
}
if (!strlen($path)) {
continue;
}
$remainder = substr($path, $trim_len);
if (!strlen($remainder)) {
// There is a file with this exact name in the manifest, so clearly
// it's a file.
$this->reason = self::REASON_IS_FILE;
return array();
}
$parts = explode('/', $remainder);
if (count($parts) == 1) {
$type = DifferentialChangeType::FILE_NORMAL;
} else {
$type = DifferentialChangeType::FILE_DIRECTORY;
}
$results[reset($parts)] = $type;
}
foreach ($results as $key => $type) {
$result = new DiffusionRepositoryPath();
$result->setPath($key);
$result->setFileType($type);
$result->setFullPath(ltrim($match_against.'/', '/').$key);
$results[$key] = $result;
}
if (empty($results)) {
// TODO: Detect "deleted" by issuing "hg log"?
$this->reason = self::REASON_IS_NONEXISTENT;
}
return $results;
}
}

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