ArcanistDifferentialCommitMessage.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.
	*/

	/**
	* Represents a parsed commit message.
	*
	* @group differential
	*/
	final class ArcanistDifferentialCommitMessage {

	private $rawCorpus;
	private $revisionID;
	private $fields = array();

	private $gitSVNBaseRevision;
	private $gitSVNBasePath;
	private $gitSVNUUID;

	public static function newFromRawCorpus($corpus) {
	$obj = new ArcanistDifferentialCommitMessage();
	$obj->rawCorpus = $corpus;

	// Parse older-style "123" fields, or newer-style full-URI fields.
	// TODO: Remove support for older-style fields.

	$match = null;
	if (preg_match('/^Differential Revision:\s(.)/im', $corpus, $match)) {
	$revision_id = trim($match[1]);
	if (strlen($revision_id)) {
	if (preg_match('/^D?\d+$/', $revision_id)) {
	$obj->revisionID = (int)trim($revision_id, 'D');
	} else {
	$uri = new PhutilURI($revision_id);
	$path = $uri->getPath();
	$path = trim($path, '/');
	if (preg_match('/^D\d+$/', $path)) {
	$obj->revisionID = (int)trim($path, 'D');
	} else {
	throw new ArcanistUsageException(
	"Invalid 'Differential Revision' field. The field should have a ".
	"Phabricator URI like 'http://phabricator.example.com/D123', ".
	"but has '{$match[1]}'.");
	}
	}
	}
	}

	$pattern = '/^git-svn-id:\s([^@]+)@(\d+)\s+(.)$/m';
	if (preg_match($pattern, $corpus, $match)) {
	$obj->gitSVNBaseRevision = $match[1].'@'.$match[2];
	$obj->gitSVNBasePath = $match[1];
	$obj->gitSVNUUID = $match[3];
	}

	return $obj;
	}

	public function getRawCorpus() {
	return $this->rawCorpus;
	}

	public function getRevisionID() {
	return $this->revisionID;
	}

	public function pullDataFromConduit(
	ConduitClient $conduit,
	$partial = false) {

	$result = $conduit->callMethodSynchronous(
	'differential.parsecommitmessage',
	array(
	'corpus' => $this->rawCorpus,
	'partial' => $partial,
	));

	$this->fields = $result['fields'];

	if (!empty($result['errors'])) {
	throw new ArcanistDifferentialCommitMessageParserException(
	$result['errors']);
	}

	return $this;
	}

	public function getFieldValue($key) {
	if (array_key_exists($key, $this->fields)) {
	return $this->fields[$key];
	}
	return null;
	}

	public function setFieldValue($key, $value) {
	$this->fields[$key] = $value;
	return $this;
	}

	public function getFields() {
	return $this->fields;
	}

	public function getGitSVNBaseRevision() {
	return $this->gitSVNBaseRevision;
	}

	public function getGitSVNBasePath() {
	return $this->gitSVNBasePath;
	}

	public function getGitSVNUUID() {
	return $this->gitSVNUUID;
	}

	public function getChecksum() {
	$fields = array_filter($this->fields);
	ksort($fields);
	$fields = json_encode($fields);
	return md5($fields);
	}

	}

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