DiffusionMercurialDiffQuery.php
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DiffusionMercurialDiffQuery.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 DiffusionMercurialDiffQuery extends DiffusionDiffQuery {

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

			$effective_commit = $this->getEffectiveCommit();
			if (!$effective_commit) {
			return null;
			}
			// TODO: This side effect is kind of skethcy.
			$drequest->setCommit($effective_commit);

			$path = $drequest->getPath();

			list($raw_diff) = $repository->execxLocalCommand(
			'diff -U %d --git --change %s -- %s',
			65535,
			$effective_commit,
			$path);

			$parser = new ArcanistDiffParser();
			$parser->setDetectBinaryFiles(true);
			$changes = $parser->parseDiff($raw_diff);

			$diff = DifferentialDiff::newFromRawChanges($changes);
			$changesets = $diff->getChangesets();
			$changeset = reset($changesets);

			$this->renderingReference =
			$drequest->getBranchURIComponent($drequest->getBranch()).
			$drequest->getPath().';'.
			$drequest->getCommit();

			return $changeset;
			}

			}