PhutilDirectoryFixture.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.
	*/

	/**
	* @group filesystem
	*/
	final class PhutilDirectoryFixture {

	protected $path;

	public static function newFromArchive($archive) {
	$obj = self::newEmptyFixture();
	execx(
	'tar -C %s -xzvvf %s',
	$obj->getPath(),
	Filesystem::resolvePath($archive));
	return $obj;
	}

	public static function newEmptyFixture() {
	$obj = new PhutilDirectoryFixture();
	$obj->path = Filesystem::createTemporaryDirectory();
	return $obj;
	}

	private function __construct() {
	// <restricted>
	}

	public function __destruct() {
	Filesystem::remove($this->path);
	}

	public function getPath($to_file = null) {
	return $this->path.'/'.ltrim($to_file, '/');
	}

	public function saveToArchive($path) {
	$tmp = new TempFile();

	execx(
	'tar -C %s -czvvf %s .',
	$this->getPath(),
	$tmp);

	$ok = rename($tmp, Filesystem::resolvePath($path));
	if (!$ok) {
	throw new FilesystemException($path, 'Failed to overwrite file.');
	}

	return $this;
	}

	}