/**
* In CSS content, prepend a path to relative URIs
*
* @param string $css
*
* @param string $path The path to prepend.
*
* @return string
*/
public static function prepend($css, $path)
{
self::$_prependPath = $path;
$css = self::_trimUrls($css);
// append
$css = preg_replace_callback('/@import\\s+([\'"])(.*?)[\'"]/', array(self::$className, '_processUriCB'), $css);
$css = preg_replace_callback('/url\\(\\s*([^\\)\\s]+)\\s*\\)/', array(self::$className, '_processUriCB'), $css);
self::$_prependPath = null;
return $css;
}
/**
* Takes a list of files, and combines them into a single minified file.
* Doesn't bother if none of the files have been modified since the cache
* file was written.
*
* @param string $type 'css' or 'js'.
* @param array $file_group Array of ('file' => filename, 'minified' => is_minified) to combine and minify.
* @param bool $minify Whether to minify the files, as well as combining them.
* @param $inline @todo Not used, document this
*
* @return string The path to the cache file which was written.
* @throws Asset_Exception
*/
protected static function combine($type, $file_group, $minify, $inline)
{
// Get the last modified time of all of the component files.
$last_mod = 0;
foreach ($file_group as $file) {
// If it is a remote file just assume it is not modified,
// otherwise we are stuck making a ton of HTTP requests.
if (strpos($file['file'], '//') !== false) {
continue;
}
$mod = filemtime(FCPATH . $file['file']);
if ($mod > $last_mod) {
$last_mod = $mod;
}
}
// $filename = md5(implode('', array_map(function($a) {
// return $a['file'];
// }, $file_group)).($minify ? 'min' : '').$last_mod).'.'.$type;
// PHP 5.2
$bits = array();
foreach ($file_group as $a) {
$bits[] = $a['file'];
}
$filename = md5(implode('', $bits) . ($minify ? 'min' : '') . $last_mod) . '.' . $type;
$filepath = FCPATH . self::$cache_path . '/' . $filename;
$needs_update = !file_exists($filepath);
if ($needs_update) {
$content = '';
foreach ($file_group as $file) {
if (self::$show_files_inline) {
$content .= PHP_EOL . '/* ' . $file['file'] . ' */' . PHP_EOL . PHP_EOL;
}
if ($file['minified'] || !$minify) {
$content_temp = self::load_file($file['file'], $type, $file_group) . PHP_EOL;
if ($type == 'css') {
$content .= Asset_Cssurirewriter::rewrite($content_temp, dirname($file['file']), null, self::$symlinks);
} else {
$content .= $content_temp;
}
} else {
$file_content = self::load_file($file['file'], $type, $file_group);
if ($file_content === false) {
show_error("Couldn't not open file {$file['file']}");
// throw new Asset_Exception("Couldn't not open file {$file['file']}");
}
if ($type == 'js') {
$content .= Asset_JSMin::minify($file_content) . PHP_EOL;
} elseif ($type == 'css') {
$css = Asset_Csscompressor::process($file_content) . PHP_EOL;
$content .= Asset_Cssurirewriter::rewrite($css, dirname($file['file']), null, self::$symlinks);
}
}
}
file_put_contents($filepath, $content, LOCK_EX);
$mtime = time();
// @todo Not used variable.
}
return $filename;
}