DifferentialChangeset.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.
	*/

	class DifferentialChangeset extends DifferentialDAO {

	protected $diffID;
	protected $oldFile;
	protected $fileName;
	protected $awayPaths;
	protected $changeType;
	protected $fileType;
	protected $metadata;
	protected $oldProperties;
	protected $newProperties;
	protected $addLines;
	protected $delLines;

	protected function getConfiguration() {
	return array(
	self::CONFIG_SERIALIZATION => array(
	'metadata' => self::SERIALIZATION_JSON,
	'oldProperties' => self::SERIALIZATION_JSON,
	'newProperties' => self::SERIALIZATION_JSON,
	'awayPaths' => self::SERIALIZATION_JSON,
	)) + parent::getConfiguration();
	}

	public function getAffectedLineCount() {
	return $this->getAddLines() + $this->getDelLines();
	}

	public function getFileType() {
	return $this->fileType;
	}

	public function getChangeType() {
	return $this->changeType;
	}

	public function getDisplayFilename() {
	$name = $this->getFilename();
	if ($this->getFileType() == DifferentialChangeType::FILE_DIRECTORY) {
	$name .= '/';
	}
	return $name;
	}

	public function addHunk(DifferentialHunk $hunk) {
	if (!isset($this->_hunks)) {
	$this->_hunks = array();
	}
	$this->_hunks[] = $hunk;

	return $this;
	}

	public function attachHunks(array $hunks) {
	$this->_hunks = $hunks;
	return $this;
	}

	public function getHunks() {
	if (!isset($this->_hunks)) {
	throw new Exception("You must load hunks before accessing them.");
	}
	return $this->_hunks;
	}

	public function loadHunks() {
	if (!$this->getID()) {
	return array();
	}
	return id(new DifferentialHunk())->loadAllWhere(
	'changesetID = %d',
	$this->getID());
	}


	public function delete() {
	$this->openTransaction();
	foreach ($this->loadHunks() as $hunk) {
	$hunk->delete();
	}
	$this->_hunks = array();
	$ret = parent::delete();
	$this->saveTransaction();
	return $ret;
	}

	public function getSortKey() {
	$sort_key = $this->getFilename();
	// Sort files with ".h" in them first, so headers (.h, .hpp) come before
	// implementations (.c, .cpp, .cs).
	$sort_key = str_replace('.h', '.!h', $sort_key);
	return $sort_key;
	}

	public function makeNewFile() {
	$file = array();
	foreach ($this->getHunks() as $hunk) {
	$file[] = $hunk->makeNewFile();
	}
	return implode("\n", $file);
	}

	public function makeOldFile() {
	$file = array();
	foreach ($this->getHunks() as $hunk) {
	$file[] = $hunk->makeOldFile();
	}
	return implode("\n", $file);
	}

	}

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