113 lines
2.7 KiB
PHP
113 lines
2.7 KiB
PHP
<?php
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/*
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* This file is part of the Assetic package, an OpenSky project.
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*
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* (c) 2010-2012 OpenSky Project Inc
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Assetic\Factory\Resource;
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/**
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* Coalesces multiple directories together into one merged resource.
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*
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* @author Kris Wallsmith <kris.wallsmith@gmail.com>
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*/
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class CoalescingDirectoryResource implements IteratorResourceInterface
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{
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private $directories;
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public function __construct($directories)
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{
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$this->directories = array();
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foreach ($directories as $directory) {
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$this->addDirectory($directory);
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}
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}
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public function addDirectory(IteratorResourceInterface $directory)
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{
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$this->directories[] = $directory;
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}
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public function isFresh($timestamp)
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{
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foreach ($this->getFileResources() as $file) {
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if (!$file->isFresh($timestamp)) {
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return false;
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}
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}
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return true;
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}
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public function getContent()
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{
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$parts = array();
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foreach ($this->getFileResources() as $file) {
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$parts[] = $file->getContent();
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}
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return implode("\n", $parts);
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}
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/**
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* Returns a string to uniquely identify the current resource.
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*
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* @return string An identifying string
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*/
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public function __toString()
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{
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$parts = array();
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foreach ($this->directories as $directory) {
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$parts[] = (string) $directory;
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}
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return implode(',', $parts);
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}
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public function getIterator()
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{
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return new \ArrayIterator($this->getFileResources());
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}
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/**
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* Returns the relative version of a filename.
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*
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* @param ResourceInterface $file The file
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* @param ResourceInterface $directory The directory
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*
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* @return string The name to compare with files from other directories
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*/
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protected function getRelativeName(ResourceInterface $file, ResourceInterface $directory)
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{
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return substr((string) $file, strlen((string) $directory));
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}
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/**
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* Performs the coalesce.
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*
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* @return array An array of file resources
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*/
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private function getFileResources()
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{
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$paths = array();
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foreach ($this->directories as $directory) {
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foreach ($directory as $file) {
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$relative = $this->getRelativeName($file, $directory);
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if (!isset($paths[$relative])) {
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$paths[$relative] = $file;
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}
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}
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}
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return array_values($paths);
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}
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}
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