DiffusionLowLevelMercurialBranchesQuery.php
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DiffusionLowLevelMercurialBranchesQuery.php
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	<?php

	/**
	* Execute and parse a low-level Mercurial branches query using `hg branches`.
	*/
	final class DiffusionLowLevelMercurialBranchesQuery
	extends DiffusionLowLevelQuery {

	private $contains;

	public function withContainsCommit($commit) {
	$this->contains = $commit;
	return $this;
	}

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

	if ($this->contains !== null) {
	$spec = hgsprintf('(descendants(%s) and head())', $this->contains);
	} else {
	$spec = hgsprintf('head()');
	}

	list($stdout) = $repository->execxLocalCommand(
	'log --template %s --rev %s',
	'{node}\1{branch}\2',
	$spec);

	$branches = array();

	$lines = explode("\2", $stdout);
	$lines = array_filter($lines);
	foreach ($lines as $line) {
	list($node, $branch) = explode("\1", $line);
	$branches[] = id(new DiffusionRepositoryRef())
	->setShortName($branch)
	->setCommitIdentifier($node);
	}

	return $branches;
	}

	}