ArcanistGitUpstreamPath.php
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ArcanistGitUpstreamPath.php
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	<?php

	final class ArcanistGitUpstreamPath extends Phobject {

	private $path = array();

	const TYPE_LOCAL = 'local';
	const TYPE_REMOTE = 'remote';


	public function addUpstream($key, array $spec) {
	$this->path[$key] = $spec;
	return $this;
	}

	public function removeUpstream($key) {
	unset($this->path[$key]);
	return $this;
	}

	public function getUpstream($key) {
	return idx($this->path, $key);
	}

	public function getLength() {
	return count($this->path);
	}

	/**
	* Test if this path eventually connects to a remote.
	*
	* @return bool True if the path connects to a remote.
	*/
	public function isConnectedToRemote() {
	$last = last($this->path);

	if (!$last) {
	return false;
	}

	return ($last['type'] == self::TYPE_REMOTE);
	}

	public function getLocalBranches() {
	return array_keys($this->path);
	}

	public function getRemoteBranchName() {
	if (!$this->isConnectedToRemote()) {
	return null;
	}

	return idx(last($this->path), 'name');
	}

	public function getRemoteRemoteName() {
	if (!$this->isConnectedToRemote()) {
	return null;
	}

	return idx(last($this->path), 'remote');
	}


	/**
	* If this path contains a cycle, return a description of it.
	*
	* @return list<string>\|null Cycle, if the path contains one.
	*/
	public function getCycle() {
	$last = last($this->path);
	if (!$last) {
	return null;
	}

	if (empty($last['cycle'])) {
	return null;
	}

	$parts = array();
	foreach ($this->path as $key => $item) {
	$parts[] = $key;
	}
	$parts[] = $item['name'];
	$parts[] = pht('...');

	return $parts;
	}

	}