AlkantarClanX12
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<?php
namespace W3TC;
class Minify_Extract {
/**
* Extracts JS files from content
* w3tc-url-escaping: When rendered, URLs need to be escaped via
* htmlspecialchars instead of esc_attr to not change the way it is encoded
* in source html. E.g. html contains a&b Using esc_attr that will not
* double escape it as a result config value will be a&b.
*
* @param string $content
* @return array
*/
static public function extract_js( $content ) {
$matches = null;
$files = array();
$content = preg_replace( '~<!--.*?-->~s', '', $content );
if ( preg_match_all( '~<script\s+[^<>]*src=["\']?([^"\']+)["\']?[^<>]*>\s*</script>~is',
$content, $matches ) ) {
$files = $matches[1];
}
$files = array_values( array_unique( $files ) );
return $files;
}
/**
* Extract CSS files from content
*
* @param string $content
* @return array
*/
static public function extract_css( $content ) {
$content = preg_replace( '~<!--.*?-->~s', '', $content );
$tags_files = array();
$matches = null;
if ( preg_match_all( '~<link\s+([^>]+)/?>(.*</link>)?~Uis', $content,
$matches, PREG_SET_ORDER ) ) {
foreach ( $matches as $match ) {
$attrs = array();
$attr_matches = null;
if ( preg_match_all( '~(\w+)=["\']([^"\']*)["\']~', $match[1],
$attr_matches, PREG_SET_ORDER ) ) {
foreach ( $attr_matches as $attr_match ) {
$attrs[$attr_match[1]] = trim( $attr_match[2] );
}
}
if ( isset( $attrs['href'] ) && isset( $attrs['rel'] ) &&
stristr( $attrs['rel'], 'stylesheet' ) !== false &&
( !isset( $attrs['media'] ) || stristr( $attrs['media'], 'print' ) === false ) ) {
$tags_files[] = array( $match[0], $attrs['href'] );
}
}
}
if ( preg_match_all( '~@import\s+(url\s*)?\(?["\']?\s*([^"\'\)\s]+)\s*["\']?\)?[^;]*;?~is',
$content, $matches, PREG_SET_ORDER ) ) {
foreach ( $matches as $match )
$tags_files[] = array( $match[0], $match[2] );
}
return $tags_files;
}
}