PhragmentController.php
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	<?php

	abstract class PhragmentController extends PhabricatorController {

	protected function loadParentFragments($path) {
	$components = explode('/', $path);

	$combinations = array();
	$current = '';
	foreach ($components as $component) {
	$current .= '/'.$component;
	$current = trim($current, '/');
	if (trim($current) === '') {
	continue;
	}

	$combinations[] = $current;
	}

	$fragments = array();
	$results = id(new PhragmentFragmentQuery())
	->setViewer($this->getRequest()->getUser())
	->withPaths($combinations)
	->execute();
	foreach ($combinations as $combination) {
	$found = false;
	foreach ($results as $fragment) {
	if ($fragment->getPath() === $combination) {
	$fragments[] = $fragment;
	$found = true;
	break;
	}
	}
	if (!$found) {
	return null;
	}
	}
	return $fragments;
	}

	protected function buildApplicationCrumbsWithPath(array $fragments) {
	$crumbs = $this->buildApplicationCrumbs();
	$crumbs->addCrumb(
	id(new PhabricatorCrumbView())
	->setName('/')
	->setHref('/phragment/'));
	foreach ($fragments as $parent) {
	$crumbs->addCrumb(
	id(new PhabricatorCrumbView())
	->setName($parent->getName())
	->setHref('/phragment/browse/'.$parent->getPath()));
	}
	return $crumbs;
	}

	}