better-testing

DiffusionGitRawDiffQuery.php
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			<?php

			final class DiffusionGitRawDiffQuery extends DiffusionRawDiffQuery {

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

			$commit = $this->getAnchorCommit();

			$options = array(
			'-M',
			'-C',
			'--no-ext-diff',
			'--no-color',
			'--src-prefix=a/',
			'--dst-prefix=b/',
			'-U'.(int)$this->getLinesOfContext(),
			);
			$options = implode(' ', $options);

			$against = $this->getAgainstCommit();
			if ($against === null) {
			$against = $commit.'^';
			}

			// If there's no path, get the entire raw diff.
			$path = nonempty($drequest->getPath(), '.');

			$future = $repository->getLocalCommandFuture(
			'diff %C %s %s -- %s',
			$options,
			$against,
			$commit,
			$path);

			$this->configureFuture($future);

			try {
			list($raw_diff) = $future->resolvex();
			} catch (CommandException $ex) {
			// Check if this is the root commit by seeing if it has parents.
			list($parents) = $repository->execxLocalCommand(
			'log --format=%s %s --',
			'%P', // "parents"
			$commit);

			if (strlen(trim($parents))) {
			throw $ex;
			}

			// No parents means we're looking at the root revision. Diff against
			// the empty tree hash instead, since there is no parent so "^" does
			// not work. See ArcanistGitAPI for more discussion.
			$future = $repository->getLocalCommandFuture(
			'diff %C %s %s -- %s',
			$options,
			ArcanistGitAPI::GIT_MAGIC_ROOT_COMMIT,
			$commit,
			$drequest->getPath());

			$this->configureFuture($future);

			list($raw_diff) = $future->resolvex();
			}

			return $raw_diff;
			}

			}