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- <?php
-
- /*
- * This file is part of the Assetic package, an OpenSky project.
- *
- * (c) 2010-2011 OpenSky Project Inc
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
- namespace Assetic\Factory\Resource;
-
- /**
- * Coalesces multiple directories together into one merged resource.
- *
- * @author Kris Wallsmith <kris.wallsmith@gmail.com>
- */
- class CoalescingDirectoryResource implements IteratorResourceInterface
- {
- private $directories;
-
- public function __construct($directories)
- {
- $this->directories = array();
-
- foreach ($directories as $directory) {
- $this->addDirectory($directory);
- }
- }
-
- public function addDirectory(IteratorResourceInterface $directory)
- {
- $this->directories[] = $directory;
- }
-
- public function isFresh($timestamp)
- {
- foreach ($this->getFileResources() as $file) {
- if (!$file->isFresh($timestamp)) {
- return false;
- }
- }
-
- return true;
- }
-
- public function getContent()
- {
- $parts = array();
- foreach ($this->getFileResources() as $file) {
- $parts[] = $file->getContent();
- }
-
- return implode("\n", $parts);
- }
-
- /**
- * Returns a string to uniquely identify the current resource.
- *
- * @return string An identifying string
- */
- public function __toString()
- {
- $parts = array();
- foreach ($this->directories as $directory) {
- $parts[] = (string) $directory;
- }
-
- return implode(',', $parts);
- }
-
- public function getIterator()
- {
- return new \ArrayIterator($this->getFileResources());
- }
-
- /**
- * Returns the relative version of a filename.
- *
- * @param ResourceInterface $file The file
- * @param ResourceInterface $directory The directory
- *
- * @return string The name to compare with files from other directories
- */
- protected function getRelativeName(ResourceInterface $file, ResourceInterface $directory)
- {
- return substr((string) $file, strlen((string) $directory));
- }
-
- /**
- * Performs the coalesce.
- *
- * @return array An array of file resources
- */
- private function getFileResources()
- {
- $paths = array();
-
- foreach ($this->directories as $directory) {
- foreach ($directory as $file) {
- $relative = $this->getRelativeName($file, $directory);
-
- if (!isset($paths[$relative])) {
- $paths[$relative] = $file;
- }
- }
- }
-
- return array_values($paths);
- }
- }
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