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DiffusionSvnFileContentQuery.php
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Mon, Jan 6, 22:36

DiffusionSvnFileContentQuery.php
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<?php
/*
* Copyright 2011 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 DiffusionSvnFileContentQuery extends DiffusionFileContentQuery {
public function getSupportsBlameOnBlame() {
return true;
}
public function getPrevRev($rev) {
return max($rev - 1, 0);
}
protected function executeQuery() {
$drequest = $this->getRequest();
$repository = $drequest->getRepository();
$path = $drequest->getPath();
$commit = $drequest->getCommit();
$remote_uri = $repository->getDetail('remote-uri');
try {
list($corpus) = execx(
'svn --non-interactive %s %s%s@%s',
$this->getNeedsBlame() ? 'blame' : 'cat',
$remote_uri,
$path,
$commit);
} catch (CommandException $ex) {
$stderr = $ex->getStdErr();
if (preg_match('/path not found$/', trim($stderr))) {
// TODO: Improve user experience for this. One way to end up here
// is to have the parser behind and look at a file which was recently
// nuked; Diffusion will think it still exists and try to grab content
// at HEAD.
throw new Exception(
"Failed to retrieve file content from Subversion. The file may ".
"have been recently deleted, or the Diffusion cache may be out of ".
"date.");
} else {
throw $ex;
}
}
$file_content = new DiffusionFileContent();
$file_content->setCorpus($corpus);
return $file_content;
}
protected function tokenizeLine($line) {
// sample line:
// 347498 yliu function print();
$m = array();
preg_match('/^\s*(\d+)\s+(\S+)(?: (.*))?$/', $line, $m);
$rev_id = $m[1];
$author = $m[2];
$text = idx($m, 3);
return array($rev_id, $author, $text);
}
}

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