DiffusionSvnExistsQuery.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 DiffusionSvnExistsQuery extends DiffusionExistsQuery {

	protected function executeQuery() {
	$request = $this->getRequest();
	$repository = $request->getRepository();

	list($info) = $repository->execxRemoteCommand(
	'info %s',
	$repository->getRemoteURI()
	);

	$matches = null;
	$exists = false;
	if (preg_match('/^Revision: (\d+)$/m', $info, $matches)) {
	$base_revision = $matches[1];
	$exists = $base_revision >= $request->getCommit();
	}

	return $exists;
	}

	}