--- /dev/null
+<?php
+/**
+ * Minification of CSS stylesheets.
+ *
+ * Copyright 2010 Wikimedia Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed
+ * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
+ * OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ *
+ * @file
+ * @version 0.1.1 -- 2010-09-11
+ * @author Trevor Parscal <tparscal@wikimedia.org>
+ * @copyright Copyright 2010 Wikimedia Foundation
+ * @license http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+/**
+ * Transforms CSS data
+ *
+ * This class provides minification, URL remapping, URL extracting, and data-URL embedding.
+ */
+class CSSMin {
+
+ /* Constants */
+
+ /**
+ * Maximum file size to still qualify for in-line embedding as a data-URI
+ *
+ * 24,576 is used because Internet Explorer has a 32,768 byte limit for data URIs,
+ * which when base64 encoded will result in a 1/3 increase in size.
+ */
+ const EMBED_SIZE_LIMIT = 24576;
+ const URL_REGEX = 'url\(\s*[\'"]?(?P<file>[^\?\)\'"]*)(?P<query>\??[^\)\'"]*)[\'"]?\s*\)';
+
+ /* Protected Static Members */
+
+ /** @var array List of common image files extensions and mime-types */
+ protected static $mimeTypes = array(
+ 'gif' => 'image/gif',
+ 'jpe' => 'image/jpeg',
+ 'jpeg' => 'image/jpeg',
+ 'jpg' => 'image/jpeg',
+ 'png' => 'image/png',
+ 'tif' => 'image/tiff',
+ 'tiff' => 'image/tiff',
+ 'xbm' => 'image/x-xbitmap',
+ );
+
+ /* Static Methods */
+
+ /**
+ * Gets a list of local file paths which are referenced in a CSS style sheet
+ *
+ * @param $source string CSS data to remap
+ * @param $path string File path where the source was read from (optional)
+ * @return array List of local file references
+ */
+ public static function getLocalFileReferences( $source, $path = null ) {
+ $files = array();
+ $rFlags = PREG_OFFSET_CAPTURE | PREG_SET_ORDER;
+ if ( preg_match_all( '/' . self::URL_REGEX . '/', $source, $matches, $rFlags ) ) {
+ foreach ( $matches as $match ) {
+ $file = ( isset( $path )
+ ? rtrim( $path, '/' ) . '/'
+ : '' ) . "{$match['file'][0]}";
+
+ // Only proceed if we can access the file
+ if ( !is_null( $path ) && file_exists( $file ) ) {
+ $files[] = $file;
+ }
+ }
+ }
+ return $files;
+ }
+
+ /**
+ * @param $file string
+ * @return bool|string
+ */
+ protected static function getMimeType( $file ) {
+ $realpath = realpath( $file );
+ // Try a couple of different ways to get the mime-type of a file, in order of
+ // preference
+ if (
+ $realpath
+ && function_exists( 'finfo_file' )
+ && function_exists( 'finfo_open' )
+ && defined( 'FILEINFO_MIME_TYPE' )
+ ) {
+ // As of PHP 5.3, this is how you get the mime-type of a file; it uses the Fileinfo
+ // PECL extension
+ return finfo_file( finfo_open( FILEINFO_MIME_TYPE ), $realpath );
+ } elseif ( function_exists( 'mime_content_type' ) ) {
+ // Before this was deprecated in PHP 5.3, this was how you got the mime-type of a file
+ return mime_content_type( $file );
+ } else {
+ // Worst-case scenario has happened, use the file extension to infer the mime-type
+ $ext = strtolower( pathinfo( $file, PATHINFO_EXTENSION ) );
+ if ( isset( self::$mimeTypes[$ext] ) ) {
+ return self::$mimeTypes[$ext];
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Remaps CSS URL paths and automatically embeds data URIs for URL rules
+ * preceded by an /* @embed * / comment
+ *
+ * @param $source string CSS data to remap
+ * @param $local string File path where the source was read from
+ * @param $remote string URL path to the file
+ * @param $embedData bool If false, never do any data URI embedding, even if / * @embed * / is found
+ * @return string Remapped CSS data
+ */
+ public static function remap( $source, $local, $remote, $embedData = true ) {
+ $pattern = '/((?P<embed>\s*\/\*\s*\@embed\s*\*\/)(?P<pre>[^\;\}]*))?' .
+ self::URL_REGEX . '(?P<post>[^;]*)[\;]?/';
+ $offset = 0;
+ while ( preg_match( $pattern, $source, $match, PREG_OFFSET_CAPTURE, $offset ) ) {
+ // Skip fully-qualified URLs and data URIs
+ $urlScheme = parse_url( $match['file'][0], PHP_URL_SCHEME );
+ if ( $urlScheme ) {
+ // Move the offset to the end of the match, leaving it alone
+ $offset = $match[0][1] + strlen( $match[0][0] );
+ continue;
+ }
+ // URLs with absolute paths like /w/index.php need to be expanded
+ // to absolute URLs but otherwise left alone
+ if ( $match['file'][0] !== '' && $match['file'][0][0] === '/' ) {
+ // Replace the file path with an expanded (possibly protocol-relative) URL
+ // ...but only if wfExpandUrl() is even available.
+ // This will not be the case if we're running outside of MW
+ $lengthIncrease = 0;
+ if ( function_exists( 'wfExpandUrl' ) ) {
+ $expanded = wfExpandUrl( $match['file'][0], PROTO_RELATIVE );
+ $origLength = strlen( $match['file'][0] );
+ $lengthIncrease = strlen( $expanded ) - $origLength;
+ $source = substr_replace( $source, $expanded,
+ $match['file'][1], $origLength
+ );
+ }
+ // Move the offset to the end of the match, leaving it alone
+ $offset = $match[0][1] + strlen( $match[0][0] ) + $lengthIncrease;
+ continue;
+ }
+ // Shortcuts
+ $embed = $match['embed'][0];
+ $pre = $match['pre'][0];
+ $post = $match['post'][0];
+ $query = $match['query'][0];
+ $url = "{$remote}/{$match['file'][0]}";
+ $file = "{$local}/{$match['file'][0]}";
+ // bug 27052 - Guard against double slashes, because foo//../bar
+ // apparently resolves to foo/bar on (some?) clients
+ $url = preg_replace( '#([^:])//+#', '\1/', $url );
+ $replacement = false;
+ if ( $local !== false && file_exists( $file ) ) {
+ // Add version parameter as a time-stamp in ISO 8601 format,
+ // using Z for the timezone, meaning GMT
+ $url .= '?' . gmdate( 'Y-m-d\TH:i:s\Z', round( filemtime( $file ), -2 ) );
+ // Embedding requires a bit of extra processing, so let's skip that if we can
+ if ( $embedData && $embed ) {
+ $type = self::getMimeType( $file );
+ // Detect when URLs were preceeded with embed tags, and also verify file size is
+ // below the limit
+ var_dump($match['embed'], $file, filesize($file));
+ if (
+ $type
+ && $match['embed'][1] > 0
+ && filesize( $file ) < self::EMBED_SIZE_LIMIT
+ ) {
+ // Strip off any trailing = symbols (makes browsers freak out)
+ $data = base64_encode( file_get_contents( $file ) );
+ // Build 2 CSS properties; one which uses a base64 encoded data URI in place
+ // of the @embed comment to try and retain line-number integrity, and the
+ // other with a remapped an versioned URL and an Internet Explorer hack
+ // making it ignored in all browsers that support data URIs
+ $replacement = "{$pre}url(data:{$type};base64,{$data}){$post};";
+ $replacement .= "{$pre}url({$url}){$post}!ie;";
+ }
+ }
+ if ( $replacement === false ) {
+ // Assume that all paths are relative to $remote, and make them absolute
+ $replacement = "{$embed}{$pre}url({$url}){$post};";
+ }
+ } elseif ( $local === false ) {
+ // Assume that all paths are relative to $remote, and make them absolute
+ $replacement = "{$embed}{$pre}url({$url}{$query}){$post};";
+ }
+ if ( $replacement !== false ) {
+ // Perform replacement on the source
+ $source = substr_replace(
+ $source, $replacement, $match[0][1], strlen( $match[0][0] )
+ );
+ // Move the offset to the end of the replacement in the source
+ $offset = $match[0][1] + strlen( $replacement );
+ continue;
+ }
+ // Move the offset to the end of the match, leaving it alone
+ $offset = $match[0][1] + strlen( $match[0][0] );
+ }
+ return $source;
+ }
+
+ /**
+ * Removes whitespace from CSS data
+ *
+ * @param $css string CSS data to minify
+ * @return string Minified CSS data
+ */
+ public static function minify( $css ) {
+ return trim(
+ str_replace(
+ array( '; ', ': ', ' {', '{ ', ', ', '} ', ';}' ),
+ array( ';', ':', '{', '{', ',', '}', '}' ),
+ preg_replace( array( '/\s+/', '/\/\*.*?\*\//s' ), array( ' ', '' ), $css )
+ )
+ );
+ }
+}
--- /dev/null
+<?php
+
+require_once('mediawiki/CSSMin.php');
+
+class OC_Minimizer_CSS extends OC_Minimizer
+{
+ protected $contentType = 'text/css';
+
+ public function findFiles($styles) {
+ // Read the selected theme from the config file
+ $theme=OC_Config::getValue( "theme" );
+
+ // Read the detected formfactor and use the right file name.
+ $fext = OC_Template::getFormFactorExtension();
+ foreach($styles as $style){
+ // is it in 3rdparty?
+ if($this->appendIfExist(OC::$THIRDPARTYROOT, OC::$THIRDPARTYWEBROOT, $style.'.css')) {
+
+ // or in apps?
+ }elseif($this->appendIfExist(OC::$APPSROOT, OC::$APPSWEBROOT, "apps/$style$fext.css" )) {
+ }elseif($this->appendIfExist(OC::$APPSROOT, OC::$APPSWEBROOT, "apps/$style.css" )) {
+
+ // or in the owncloud root?
+ }elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "$style$fext.css" )) {
+ }elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "$style.css" )) {
+
+ // or in core ?
+ }elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "core/$style$fext.css" )) {
+ }elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "core/$style.css" )) {
+
+ }else{
+ echo('css file not found: style:'.$style.' formfactor:'.$fext.' webroot:'.OC::$WEBROOT.' serverroot:'.OC::$SERVERROOT);
+ die();
+ }
+ }
+ // Add the theme css files. you can override the default values here
+ if(!empty($theme)) {
+ foreach($styles as $style){
+ if($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "themes/$theme/apps/$style$fext.css" )) {
+ }elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "themes/$theme/apps/$style.css" )) {
+
+ }elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "themes/$theme/$style$fext.css" )) {
+ }elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "themes/$theme/$style.css" )) {
+
+ }elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "themes/$theme/core/$style$fext.css" )) {
+ }elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "themes/$theme/core/$style.css" )) {
+ }
+ }
+ }
+ return $this->files;
+ }
+
+ public function minimizeFiles($files) {
+ $css_out = '';
+ $appswebroot = (string) OC::$APPSWEBROOT;
+ $webroot = (string) OC::$WEBROOT;
+ foreach($files as $file_info) {
+ $file = $file_info[0] . '/' . $file_info[2];
+ $css_out .= '/* ' . $file . ' */' . "\n";
+ $css = file_get_contents($file);
+ if (strpos($file, OC::$APPSROOT) == 0) {
+ $css = str_replace('%appswebroot%', $appswebroot, $css);
+ $css = str_replace('%webroot%', $webroot, $css);
+ }
+ $remote = $file_info[1];
+ $remote .= '../';
+ $remote .= dirname($file_info[2]);
+ $css_out .= CSSMin::remap($css, dirname($file), $remote, true);
+ }
+ $css_out = CSSMin::minify($css_out);
+ return $css_out;
+ }
+}
projects / nextcloud-server.git / commitdiff