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sfLESSDependency.class.php
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/
sfLESSDependency.class.php
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<?php
/*
* This file is part of the sfLESSPlugin.
* (c) 2010 Konstantin Kudryashov <ever.zet@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* sfLESSDependency checks for less dependencies
*
* @package sfLESSPlugin
* @subpackage lib
* @author Victor Berchet <victor@suumit.com>
* @version 1.0.0
*/
class sfLESSDependency
{
/**
* Base path
*/
protected $path;
public function __construct($path)
{
if (!sfLESSUtils::isPathAbsolute($path) || !is_dir($path))
{
throw new InvalidArgumentException("An existing absolute folder must be provided");
}
else
{
$this->path = $path;
}
}
/**
* Compute the dependencies of the file
*
* @param file $lessFile A less file
* @param array $deps An array of pre-existing dependencies
* @return array The updated array of dependencies
*/
public function computeDependencies($lessFile, array $deps)
{
if (!sfLESSUtils::isPathAbsolute($lessFile))
{
$lessFile = realpath($this->path + $lessFile);
}
if (is_file($lessFile))
{
$less = file_get_contents($lessFile);
if (preg_match_all("/\s*@import\s+(['\"])(.*?)\\1\s*;/", $less, $files))
{
foreach ($files[2] as $file)
{
// Append the .less extension when omitted
if (strpos('.', $file) === false)
{
$file .= '.less';
}
// Compute the canonical path
$file = realpath(dirname($lessFile) . '/' . $file);
if ($file !== false && !in_array($file, $deps))
{
$deps[] = $file;
// Recursively add dependencies
$deps = array_merge($deps, $this->computeDependencies($file, $deps));
}
}
}
return $deps;
}
else
{
return array();
}
}
}