DiffusionGitRawDiffQuery.php
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DiffusionGitRawDiffQuery.php
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	<?php

	final class DiffusionGitRawDiffQuery extends DiffusionRawDiffQuery {

	protected function newQueryFuture() {
	$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(),
	);

	$against = $this->getAgainstCommit();
	if ($against === null) {
	// Check if this is the root commit by seeing if it has parents, since
	// `git diff X^ X` does not work if "X" is the initial commit.
	list($parents) = $repository->execxLocalCommand(
	'log -n 1 %s %s --',
	'--format=%P',
	gitsprintf('%s', $commit));

	if (strlen(trim($parents))) {
	$against = $commit.'^';
	} else {
	$against = ArcanistGitAPI::GIT_MAGIC_ROOT_COMMIT;
	}
	}

	$path = $drequest->getPath();
	if (!phutil_nonempty_string($path)) {
	$path = '.';
	}

	return $repository->getLocalCommandFuture(
	'diff %Ls %s %s -- %s',
	$options,
	gitsprintf('%s', $against),
	gitsprintf('%s', $commit),
	$path);
	}

	}