DiffusionExistsQueryConduitAPIMethod.php
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	<?php

	final class DiffusionExistsQueryConduitAPIMethod
	extends DiffusionQueryConduitAPIMethod {

	public function getAPIMethodName() {
	return 'diffusion.existsquery';
	}

	public function getMethodDescription() {
	return pht('Determine if code exists in a version control system.');
	}

	protected function defineReturnType() {
	return 'bool';
	}

	protected function defineCustomParamTypes() {
	return array(
	'commit' => 'required string',
	);
	}

	protected function getGitResult(ConduitAPIRequest $request) {
	$repository = $this->getDiffusionRequest()->getRepository();
	$commit = $request->getValue('commit');
	list($err, $merge_base) = $repository->execLocalCommand(
	'cat-file -t %s',
	$commit);
	return !$err;
	}

	protected function getSVNResult(ConduitAPIRequest $request) {
	$repository = $this->getDiffusionRequest()->getRepository();
	$commit = $request->getValue('commit');

	$refs = id(new DiffusionCachedResolveRefsQuery())
	->setRepository($repository)
	->withRefs(array($commit))
	->execute();

	return (bool)$refs;
	}

	protected function getMercurialResult(ConduitAPIRequest $request) {
	$repository = $this->getDiffusionRequest()->getRepository();
	$commit = $request->getValue('commit');
	list($err, $stdout) = $repository->execLocalCommand(
	'id --rev %s',
	hgsprintf('%s', $commit));
	return !$err;
	}

	}