DiffusionPathIDQuery.php
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	<?php

	/**
	* @task pathutil Path Utilities
	*/
	final class DiffusionPathIDQuery extends Phobject {

	private $paths = array();

	public function __construct(array $paths) {
	$this->paths = $paths;
	}

	public function loadPathIDs() {
	$repository = new PhabricatorRepository();

	$path_normal_map = array();
	foreach ($this->paths as $path) {
	$normal = self::normalizePath($path);
	$path_normal_map[$normal][] = $path;
	}

	$paths = queryfx_all(
	$repository->establishConnection('r'),
	'SELECT * FROM %T WHERE pathHash IN (%Ls)',
	PhabricatorRepository::TABLE_PATH,
	array_map('md5', array_keys($path_normal_map)));
	$paths = ipull($paths, 'id', 'path');

	$result = array();

	foreach ($path_normal_map as $normal => $originals) {
	foreach ($originals as $original) {
	$result[$original] = idx($paths, $normal);
	}
	}

	return $result;
	}


	/**
	* Convert a path to the canonical, absolute representation used by Diffusion.
	*
	* @param string $path Some repository path.
	* @return string Canonicalized Diffusion path.
	* @task pathutil
	*/
	public static function normalizePath($path) {

	// Ensure we have a string, not a null.
	$path = coalesce($path, '');

	// Normalize to single slashes, e.g. "///" => "/".
	$path = preg_replace('@[/]{2,}@', '/', $path);

	return '/'.trim($path, '/');
	}


	/**
	* Return the canonical parent directory for a path. Note, returns "/" when
	* passed "/".
	*
	* @param string $path Some repository path.
	* @return string That path's canonical parent directory.
	* @task pathutil
	*/
	public static function getParentPath($path) {
	$path = self::normalizePath($path);
	$path = dirname($path);
	if (phutil_is_windows() && $path == '\\') {
	$path = '/';
	}
	return $path;
	}


	/**
	* Generate a list of parents for a repository path. The path itself is
	* included.
	*
	* @param string $path Some repository path.
	* @return list List of canonical paths between the path and the root.
	* @task pathutil
	*/
	public static function expandPathToRoot($path) {
	$path = self::normalizePath($path);
	$parents = array($path);
	$parts = explode('/', trim($path, '/'));
	while (count($parts) >= 1) {
	if (array_pop($parts)) {
	$parents[] = '/'.implode('/', $parts);
	}
	}
	return $parents;
	}

	}

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