Sam Tuke
13 years ago
commit
22dd155e4d
@ -0,0 +1,229 @@ |
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<?php |
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/** |
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* Minification of CSS stylesheets. |
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* |
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* Copyright 2010 Wikimedia Foundation |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); you may |
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* not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software distributed |
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* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS |
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* OF ANY KIND, either express or implied. See the License for the |
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* specific language governing permissions and limitations under the License. |
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* |
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* @file |
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* @version 0.1.1 -- 2010-09-11 |
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* @author Trevor Parscal <tparscal@wikimedia.org> |
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* @copyright Copyright 2010 Wikimedia Foundation |
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* @license http://www.apache.org/licenses/LICENSE-2.0 |
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*/ |
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|
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/** |
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* Transforms CSS data |
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* |
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* This class provides minification, URL remapping, URL extracting, and data-URL embedding. |
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*/ |
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class CSSMin { |
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|
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/* Constants */ |
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|
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/** |
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* Maximum file size to still qualify for in-line embedding as a data-URI |
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* |
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* 24,576 is used because Internet Explorer has a 32,768 byte limit for data URIs, |
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* which when base64 encoded will result in a 1/3 increase in size. |
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*/ |
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const EMBED_SIZE_LIMIT = 24576; |
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const URL_REGEX = 'url\(\s*[\'"]?(?P<file>[^\?\)\'"]*)(?P<query>\??[^\)\'"]*)[\'"]?\s*\)'; |
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|
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/* Protected Static Members */ |
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|
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/** @var array List of common image files extensions and mime-types */ |
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protected static $mimeTypes = array( |
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'gif' => 'image/gif', |
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'jpe' => 'image/jpeg', |
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'jpeg' => 'image/jpeg', |
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'jpg' => 'image/jpeg', |
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'png' => 'image/png', |
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'tif' => 'image/tiff', |
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'tiff' => 'image/tiff', |
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'xbm' => 'image/x-xbitmap', |
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); |
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|
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/* Static Methods */ |
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|
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/** |
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* Gets a list of local file paths which are referenced in a CSS style sheet |
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* |
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* @param $source string CSS data to remap |
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* @param $path string File path where the source was read from (optional) |
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* @return array List of local file references |
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*/ |
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public static function getLocalFileReferences( $source, $path = null ) { |
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$files = array(); |
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$rFlags = PREG_OFFSET_CAPTURE | PREG_SET_ORDER; |
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if ( preg_match_all( '/' . self::URL_REGEX . '/', $source, $matches, $rFlags ) ) { |
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foreach ( $matches as $match ) { |
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$file = ( isset( $path ) |
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? rtrim( $path, '/' ) . '/' |
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: '' ) . "{$match['file'][0]}"; |
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|
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// Only proceed if we can access the file |
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if ( !is_null( $path ) && file_exists( $file ) ) { |
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$files[] = $file; |
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} |
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} |
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} |
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return $files; |
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} |
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|
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/** |
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* @param $file string |
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* @return bool|string |
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*/ |
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protected static function getMimeType( $file ) { |
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$realpath = realpath( $file ); |
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// Try a couple of different ways to get the mime-type of a file, in order of |
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// preference |
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if ( |
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$realpath |
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&& function_exists( 'finfo_file' ) |
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&& function_exists( 'finfo_open' ) |
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&& defined( 'FILEINFO_MIME_TYPE' ) |
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) { |
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// As of PHP 5.3, this is how you get the mime-type of a file; it uses the Fileinfo |
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// PECL extension |
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return finfo_file( finfo_open( FILEINFO_MIME_TYPE ), $realpath ); |
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} elseif ( function_exists( 'mime_content_type' ) ) { |
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// Before this was deprecated in PHP 5.3, this was how you got the mime-type of a file |
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return mime_content_type( $file ); |
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} else { |
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// Worst-case scenario has happened, use the file extension to infer the mime-type |
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$ext = strtolower( pathinfo( $file, PATHINFO_EXTENSION ) ); |
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if ( isset( self::$mimeTypes[$ext] ) ) { |
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return self::$mimeTypes[$ext]; |
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} |
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} |
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return false; |
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} |
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|
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/** |
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* Remaps CSS URL paths and automatically embeds data URIs for URL rules |
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* preceded by an /* @embed * / comment |
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* |
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* @param $source string CSS data to remap |
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* @param $local string File path where the source was read from |
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* @param $remote string URL path to the file |
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* @param $embedData bool If false, never do any data URI embedding, even if / * @embed * / is found |
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* @return string Remapped CSS data |
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*/ |
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public static function remap( $source, $local, $remote, $embedData = true ) { |
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$pattern = '/((?P<embed>\s*\/\*\s*\@embed\s*\*\/)(?P<pre>[^\;\}]*))?' . |
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self::URL_REGEX . '(?P<post>[^;]*)[\;]?/'; |
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$offset = 0; |
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while ( preg_match( $pattern, $source, $match, PREG_OFFSET_CAPTURE, $offset ) ) { |
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// Skip fully-qualified URLs and data URIs |
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$urlScheme = parse_url( $match['file'][0], PHP_URL_SCHEME ); |
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if ( $urlScheme ) { |
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// Move the offset to the end of the match, leaving it alone |
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$offset = $match[0][1] + strlen( $match[0][0] ); |
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continue; |
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} |
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// URLs with absolute paths like /w/index.php need to be expanded |
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// to absolute URLs but otherwise left alone |
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if ( $match['file'][0] !== '' && $match['file'][0][0] === '/' ) { |
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// Replace the file path with an expanded (possibly protocol-relative) URL |
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// ...but only if wfExpandUrl() is even available. |
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// This will not be the case if we're running outside of MW |
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$lengthIncrease = 0; |
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if ( function_exists( 'wfExpandUrl' ) ) { |
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$expanded = wfExpandUrl( $match['file'][0], PROTO_RELATIVE ); |
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$origLength = strlen( $match['file'][0] ); |
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$lengthIncrease = strlen( $expanded ) - $origLength; |
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$source = substr_replace( $source, $expanded, |
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$match['file'][1], $origLength |
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); |
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} |
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// Move the offset to the end of the match, leaving it alone |
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$offset = $match[0][1] + strlen( $match[0][0] ) + $lengthIncrease; |
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continue; |
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} |
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// Shortcuts |
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$embed = $match['embed'][0]; |
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$pre = $match['pre'][0]; |
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$post = $match['post'][0]; |
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$query = $match['query'][0]; |
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$url = "{$remote}/{$match['file'][0]}"; |
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$file = "{$local}/{$match['file'][0]}"; |
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// bug 27052 - Guard against double slashes, because foo//../bar |
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// apparently resolves to foo/bar on (some?) clients |
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$url = preg_replace( '#([^:])//+#', '\1/', $url ); |
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$replacement = false; |
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if ( $local !== false && file_exists( $file ) ) { |
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// Add version parameter as a time-stamp in ISO 8601 format, |
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// using Z for the timezone, meaning GMT |
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$url .= '?' . gmdate( 'Y-m-d\TH:i:s\Z', round( filemtime( $file ), -2 ) ); |
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// Embedding requires a bit of extra processing, so let's skip that if we can |
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if ( $embedData && $embed ) { |
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$type = self::getMimeType( $file ); |
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// Detect when URLs were preceeded with embed tags, and also verify file size is |
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// below the limit |
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var_dump($match['embed'], $file, filesize($file)); |
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if ( |
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$type |
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&& $match['embed'][1] > 0 |
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&& filesize( $file ) < self::EMBED_SIZE_LIMIT |
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) { |
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// Strip off any trailing = symbols (makes browsers freak out) |
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$data = base64_encode( file_get_contents( $file ) ); |
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// Build 2 CSS properties; one which uses a base64 encoded data URI in place |
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// of the @embed comment to try and retain line-number integrity, and the |
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// other with a remapped an versioned URL and an Internet Explorer hack |
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// making it ignored in all browsers that support data URIs |
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$replacement = "{$pre}url(data:{$type};base64,{$data}){$post};"; |
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$replacement .= "{$pre}url({$url}){$post}!ie;"; |
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} |
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} |
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if ( $replacement === false ) { |
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// Assume that all paths are relative to $remote, and make them absolute |
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$replacement = "{$embed}{$pre}url({$url}){$post};"; |
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} |
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} elseif ( $local === false ) { |
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// Assume that all paths are relative to $remote, and make them absolute |
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$replacement = "{$embed}{$pre}url({$url}{$query}){$post};"; |
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} |
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if ( $replacement !== false ) { |
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// Perform replacement on the source |
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$source = substr_replace( |
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$source, $replacement, $match[0][1], strlen( $match[0][0] ) |
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); |
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// Move the offset to the end of the replacement in the source |
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$offset = $match[0][1] + strlen( $replacement ); |
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continue; |
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} |
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// Move the offset to the end of the match, leaving it alone |
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$offset = $match[0][1] + strlen( $match[0][0] ); |
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} |
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return $source; |
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} |
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|
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/** |
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* Removes whitespace from CSS data |
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* |
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* @param $css string CSS data to minify |
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* @return string Minified CSS data |
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*/ |
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public static function minify( $css ) { |
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return trim( |
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str_replace( |
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array( '; ', ': ', ' {', '{ ', ', ', '} ', ';}' ), |
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array( ';', ':', '{', '{', ',', '}', '}' ), |
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preg_replace( array( '/\s+/', '/\/\*.*?\*\//s' ), array( ' ', '' ), $css ) |
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) |
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); |
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} |
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} |
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@ -0,0 +1,606 @@ |
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<?php |
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/** |
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* JavaScript Minifier |
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* |
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* @file |
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* @author Paul Copperman <paul.copperman@gmail.com> |
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* @license Choose any of Apache, MIT, GPL, LGPL |
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*/ |
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|
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/** |
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* This class is meant to safely minify javascript code, while leaving syntactically correct |
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* programs intact. Other libraries, such as JSMin require a certain coding style to work |
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* correctly. OTOH, libraries like jsminplus, that do parse the code correctly are rather |
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* slow, because they construct a complete parse tree before outputting the code minified. |
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* So this class is meant to allow arbitrary (but syntactically correct) input, while being |
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* fast enough to be used for on-the-fly minifying. |
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*/ |
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class JavaScriptMinifier { |
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|
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/* Class constants */ |
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/* Parsing states. |
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* The state machine is only necessary to decide whether to parse a slash as division |
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* operator or as regexp literal. |
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* States are named after the next expected item. We only distinguish states when the |
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* distinction is relevant for our purpose. |
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*/ |
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const STATEMENT = 0; |
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const CONDITION = 1; |
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const PROPERTY_ASSIGNMENT = 2; |
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const EXPRESSION = 3; |
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const EXPRESSION_NO_NL = 4; // only relevant for semicolon insertion |
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const EXPRESSION_OP = 5; |
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const EXPRESSION_FUNC = 6; |
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const EXPRESSION_TERNARY = 7; // used to determine the role of a colon |
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const EXPRESSION_TERNARY_OP = 8; |
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const EXPRESSION_TERNARY_FUNC = 9; |
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const PAREN_EXPRESSION = 10; // expression which is not on the top level |
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const PAREN_EXPRESSION_OP = 11; |
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const PAREN_EXPRESSION_FUNC = 12; |
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const PROPERTY_EXPRESSION = 13; // expression which is within an object literal |
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const PROPERTY_EXPRESSION_OP = 14; |
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const PROPERTY_EXPRESSION_FUNC = 15; |
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|
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/* Token types */ |
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const TYPE_UN_OP = 1; // unary operators |
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const TYPE_INCR_OP = 2; // ++ and -- |
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const TYPE_BIN_OP = 3; // binary operators |
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const TYPE_ADD_OP = 4; // + and - which can be either unary or binary ops |
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const TYPE_HOOK = 5; // ? |
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const TYPE_COLON = 6; // : |
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const TYPE_COMMA = 7; // , |
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const TYPE_SEMICOLON = 8; // ; |
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const TYPE_BRACE_OPEN = 9; // { |
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const TYPE_BRACE_CLOSE = 10; // } |
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const TYPE_PAREN_OPEN = 11; // ( and [ |
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const TYPE_PAREN_CLOSE = 12; // ) and ] |
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const TYPE_RETURN = 13; // keywords: break, continue, return, throw |
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const TYPE_IF = 14; // keywords: catch, for, with, switch, while, if |
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const TYPE_DO = 15; // keywords: case, var, finally, else, do, try |
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const TYPE_FUNC = 16; // keywords: function |
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const TYPE_LITERAL = 17; // all literals, identifiers and unrecognised tokens |
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|
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// Sanity limit to avoid excessive memory usage |
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const STACK_LIMIT = 1000; |
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|
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/* Static functions */ |
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|
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/** |
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* Returns minified JavaScript code. |
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* |
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* NOTE: $maxLineLength isn't a strict maximum. Longer lines will be produced when |
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* literals (e.g. quoted strings) longer than $maxLineLength are encountered |
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* or when required to guard against semicolon insertion. |
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* |
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* @param $s String JavaScript code to minify |
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* @param $statementsOnOwnLine Bool Whether to put each statement on its own line |
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* @param $maxLineLength Int Maximum length of a single line, or -1 for no maximum. |
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* @return String Minified code |
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*/ |
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public static function minify( $s, $statementsOnOwnLine = false, $maxLineLength = 1000 ) { |
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// First we declare a few tables that contain our parsing rules |
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|
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// $opChars : characters, which can be combined without whitespace in between them |
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$opChars = array( |
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'!' => true, |
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'"' => true, |
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'%' => true, |
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'&' => true, |
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"'" => true, |
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'(' => true, |
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')' => true, |
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'*' => true, |
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'+' => true, |
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',' => true, |
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'-' => true, |
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'.' => true, |
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'/' => true, |
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':' => true, |
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';' => true, |
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'<' => true, |
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'=' => true, |
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'>' => true, |
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'?' => true, |
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'[' => true, |
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']' => true, |
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'^' => true, |
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'{' => true, |
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'|' => true, |
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'}' => true, |
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'~' => true |
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); |
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|
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// $tokenTypes : maps keywords and operators to their corresponding token type |
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$tokenTypes = array( |
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'!' => self::TYPE_UN_OP, |
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'~' => self::TYPE_UN_OP, |
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'delete' => self::TYPE_UN_OP, |
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'new' => self::TYPE_UN_OP, |
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'typeof' => self::TYPE_UN_OP, |
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'void' => self::TYPE_UN_OP, |
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'++' => self::TYPE_INCR_OP, |
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'--' => self::TYPE_INCR_OP, |
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'!=' => self::TYPE_BIN_OP, |
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'!==' => self::TYPE_BIN_OP, |
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'%' => self::TYPE_BIN_OP, |
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'%=' => self::TYPE_BIN_OP, |
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'&' => self::TYPE_BIN_OP, |
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'&&' => self::TYPE_BIN_OP, |
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'&=' => self::TYPE_BIN_OP, |
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'*' => self::TYPE_BIN_OP, |
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'*=' => self::TYPE_BIN_OP, |
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'+=' => self::TYPE_BIN_OP, |
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'-=' => self::TYPE_BIN_OP, |
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'.' => self::TYPE_BIN_OP, |
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'/' => self::TYPE_BIN_OP, |
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'/=' => self::TYPE_BIN_OP, |
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'<' => self::TYPE_BIN_OP, |
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'<<' => self::TYPE_BIN_OP, |
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'<<=' => self::TYPE_BIN_OP, |
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'<=' => self::TYPE_BIN_OP, |
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'=' => self::TYPE_BIN_OP, |
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'==' => self::TYPE_BIN_OP, |
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'===' => self::TYPE_BIN_OP, |
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'>' => self::TYPE_BIN_OP, |
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'>=' => self::TYPE_BIN_OP, |
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'>>' => self::TYPE_BIN_OP, |
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'>>=' => self::TYPE_BIN_OP, |
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'>>>' => self::TYPE_BIN_OP, |
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'>>>=' => self::TYPE_BIN_OP, |
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'^' => self::TYPE_BIN_OP, |
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'^=' => self::TYPE_BIN_OP, |
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'|' => self::TYPE_BIN_OP, |
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'|=' => self::TYPE_BIN_OP, |
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'||' => self::TYPE_BIN_OP, |
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'in' => self::TYPE_BIN_OP, |
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'instanceof' => self::TYPE_BIN_OP, |
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'+' => self::TYPE_ADD_OP, |
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'-' => self::TYPE_ADD_OP, |
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'?' => self::TYPE_HOOK, |
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':' => self::TYPE_COLON, |
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',' => self::TYPE_COMMA, |
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';' => self::TYPE_SEMICOLON, |
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'{' => self::TYPE_BRACE_OPEN, |
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'}' => self::TYPE_BRACE_CLOSE, |
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'(' => self::TYPE_PAREN_OPEN, |
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'[' => self::TYPE_PAREN_OPEN, |
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')' => self::TYPE_PAREN_CLOSE, |
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']' => self::TYPE_PAREN_CLOSE, |
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'break' => self::TYPE_RETURN, |
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'continue' => self::TYPE_RETURN, |
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'return' => self::TYPE_RETURN, |
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'throw' => self::TYPE_RETURN, |
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'catch' => self::TYPE_IF, |
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'for' => self::TYPE_IF, |
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'if' => self::TYPE_IF, |
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'switch' => self::TYPE_IF, |
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'while' => self::TYPE_IF, |
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'with' => self::TYPE_IF, |
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'case' => self::TYPE_DO, |
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'do' => self::TYPE_DO, |
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'else' => self::TYPE_DO, |
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'finally' => self::TYPE_DO, |
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'try' => self::TYPE_DO, |
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'var' => self::TYPE_DO, |
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'function' => self::TYPE_FUNC |
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); |
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|
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// $goto : This is the main table for our state machine. For every state/token pair |
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// the following state is defined. When no rule exists for a given pair, |
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// the state is left unchanged. |
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$goto = array( |
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self::STATEMENT => array( |
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self::TYPE_UN_OP => self::EXPRESSION, |
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self::TYPE_INCR_OP => self::EXPRESSION, |
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self::TYPE_ADD_OP => self::EXPRESSION, |
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self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION, |
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self::TYPE_RETURN => self::EXPRESSION_NO_NL, |
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self::TYPE_IF => self::CONDITION, |
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self::TYPE_FUNC => self::CONDITION, |
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self::TYPE_LITERAL => self::EXPRESSION_OP |
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), |
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self::CONDITION => array( |
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self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION |
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), |
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self::PROPERTY_ASSIGNMENT => array( |
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self::TYPE_COLON => self::PROPERTY_EXPRESSION, |
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self::TYPE_BRACE_OPEN => self::STATEMENT |
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), |
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self::EXPRESSION => array( |
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self::TYPE_SEMICOLON => self::STATEMENT, |
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self::TYPE_BRACE_OPEN => self::PROPERTY_ASSIGNMENT, |
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self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION, |
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self::TYPE_FUNC => self::EXPRESSION_FUNC, |
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self::TYPE_LITERAL => self::EXPRESSION_OP |
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), |
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self::EXPRESSION_NO_NL => array( |
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self::TYPE_SEMICOLON => self::STATEMENT, |
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self::TYPE_BRACE_OPEN => self::PROPERTY_ASSIGNMENT, |
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self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION, |
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self::TYPE_FUNC => self::EXPRESSION_FUNC, |
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self::TYPE_LITERAL => self::EXPRESSION_OP |
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), |
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self::EXPRESSION_OP => array( |
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self::TYPE_BIN_OP => self::EXPRESSION, |
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self::TYPE_ADD_OP => self::EXPRESSION, |
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self::TYPE_HOOK => self::EXPRESSION_TERNARY, |
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self::TYPE_COLON => self::STATEMENT, |
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self::TYPE_COMMA => self::EXPRESSION, |
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self::TYPE_SEMICOLON => self::STATEMENT, |
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self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION |
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), |
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self::EXPRESSION_FUNC => array( |
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self::TYPE_BRACE_OPEN => self::STATEMENT |
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), |
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self::EXPRESSION_TERNARY => array( |
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self::TYPE_BRACE_OPEN => self::PROPERTY_ASSIGNMENT, |
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self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION, |
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self::TYPE_FUNC => self::EXPRESSION_TERNARY_FUNC, |
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self::TYPE_LITERAL => self::EXPRESSION_TERNARY_OP |
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), |
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self::EXPRESSION_TERNARY_OP => array( |
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self::TYPE_BIN_OP => self::EXPRESSION_TERNARY, |
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self::TYPE_ADD_OP => self::EXPRESSION_TERNARY, |
||||
self::TYPE_HOOK => self::EXPRESSION_TERNARY, |
||||
self::TYPE_COMMA => self::EXPRESSION_TERNARY, |
||||
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION |
||||
), |
||||
self::EXPRESSION_TERNARY_FUNC => array( |
||||
self::TYPE_BRACE_OPEN => self::STATEMENT |
||||
), |
||||
self::PAREN_EXPRESSION => array( |
||||
self::TYPE_BRACE_OPEN => self::PROPERTY_ASSIGNMENT, |
||||
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION, |
||||
self::TYPE_FUNC => self::PAREN_EXPRESSION_FUNC, |
||||
self::TYPE_LITERAL => self::PAREN_EXPRESSION_OP |
||||
), |
||||
self::PAREN_EXPRESSION_OP => array( |
||||
self::TYPE_BIN_OP => self::PAREN_EXPRESSION, |
||||
self::TYPE_ADD_OP => self::PAREN_EXPRESSION, |
||||
self::TYPE_HOOK => self::PAREN_EXPRESSION, |
||||
self::TYPE_COLON => self::PAREN_EXPRESSION, |
||||
self::TYPE_COMMA => self::PAREN_EXPRESSION, |
||||
self::TYPE_SEMICOLON => self::PAREN_EXPRESSION, |
||||
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION |
||||
), |
||||
self::PAREN_EXPRESSION_FUNC => array( |
||||
self::TYPE_BRACE_OPEN => self::STATEMENT |
||||
), |
||||
self::PROPERTY_EXPRESSION => array( |
||||
self::TYPE_BRACE_OPEN => self::PROPERTY_ASSIGNMENT, |
||||
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION, |
||||
self::TYPE_FUNC => self::PROPERTY_EXPRESSION_FUNC, |
||||
self::TYPE_LITERAL => self::PROPERTY_EXPRESSION_OP |
||||
), |
||||
self::PROPERTY_EXPRESSION_OP => array( |
||||
self::TYPE_BIN_OP => self::PROPERTY_EXPRESSION, |
||||
self::TYPE_ADD_OP => self::PROPERTY_EXPRESSION, |
||||
self::TYPE_HOOK => self::PROPERTY_EXPRESSION, |
||||
self::TYPE_COMMA => self::PROPERTY_ASSIGNMENT, |
||||
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION |
||||
), |
||||
self::PROPERTY_EXPRESSION_FUNC => array( |
||||
self::TYPE_BRACE_OPEN => self::STATEMENT |
||||
) |
||||
); |
||||
|
||||
// $push : This table contains the rules for when to push a state onto the stack. |
||||
// The pushed state is the state to return to when the corresponding |
||||
// closing token is found |
||||
$push = array( |
||||
self::STATEMENT => array( |
||||
self::TYPE_BRACE_OPEN => self::STATEMENT, |
||||
self::TYPE_PAREN_OPEN => self::EXPRESSION_OP |
||||
), |
||||
self::CONDITION => array( |
||||
self::TYPE_PAREN_OPEN => self::STATEMENT |
||||
), |
||||
self::PROPERTY_ASSIGNMENT => array( |
||||
self::TYPE_BRACE_OPEN => self::PROPERTY_ASSIGNMENT |
||||
), |
||||
self::EXPRESSION => array( |
||||
self::TYPE_BRACE_OPEN => self::EXPRESSION_OP, |
||||
self::TYPE_PAREN_OPEN => self::EXPRESSION_OP |
||||
), |
||||
self::EXPRESSION_NO_NL => array( |
||||
self::TYPE_BRACE_OPEN => self::EXPRESSION_OP, |
||||
self::TYPE_PAREN_OPEN => self::EXPRESSION_OP |
||||
), |
||||
self::EXPRESSION_OP => array( |
||||
self::TYPE_HOOK => self::EXPRESSION, |
||||
self::TYPE_PAREN_OPEN => self::EXPRESSION_OP |
||||
), |
||||
self::EXPRESSION_FUNC => array( |
||||
self::TYPE_BRACE_OPEN => self::EXPRESSION_OP |
||||
), |
||||
self::EXPRESSION_TERNARY => array( |
||||
self::TYPE_BRACE_OPEN => self::EXPRESSION_TERNARY_OP, |
||||
self::TYPE_PAREN_OPEN => self::EXPRESSION_TERNARY_OP |
||||
), |
||||
self::EXPRESSION_TERNARY_OP => array( |
||||
self::TYPE_HOOK => self::EXPRESSION_TERNARY, |
||||
self::TYPE_PAREN_OPEN => self::EXPRESSION_TERNARY_OP |
||||
), |
||||
self::EXPRESSION_TERNARY_FUNC => array( |
||||
self::TYPE_BRACE_OPEN => self::EXPRESSION_TERNARY_OP |
||||
), |
||||
self::PAREN_EXPRESSION => array( |
||||
self::TYPE_BRACE_OPEN => self::PAREN_EXPRESSION_OP, |
||||
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION_OP |
||||
), |
||||
self::PAREN_EXPRESSION_OP => array( |
||||
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION_OP |
||||
), |
||||
self::PAREN_EXPRESSION_FUNC => array( |
||||
self::TYPE_BRACE_OPEN => self::PAREN_EXPRESSION_OP |
||||
), |
||||
self::PROPERTY_EXPRESSION => array( |
||||
self::TYPE_BRACE_OPEN => self::PROPERTY_EXPRESSION_OP, |
||||
self::TYPE_PAREN_OPEN => self::PROPERTY_EXPRESSION_OP |
||||
), |
||||
self::PROPERTY_EXPRESSION_OP => array( |
||||
self::TYPE_PAREN_OPEN => self::PROPERTY_EXPRESSION_OP |
||||
), |
||||
self::PROPERTY_EXPRESSION_FUNC => array( |
||||
self::TYPE_BRACE_OPEN => self::PROPERTY_EXPRESSION_OP |
||||
) |
||||
); |
||||
|
||||
// $pop : Rules for when to pop a state from the stack |
||||
$pop = array( |
||||
self::STATEMENT => array( self::TYPE_BRACE_CLOSE => true ), |
||||
self::PROPERTY_ASSIGNMENT => array( self::TYPE_BRACE_CLOSE => true ), |
||||
self::EXPRESSION => array( self::TYPE_BRACE_CLOSE => true ), |
||||
self::EXPRESSION_NO_NL => array( self::TYPE_BRACE_CLOSE => true ), |
||||
self::EXPRESSION_OP => array( self::TYPE_BRACE_CLOSE => true ), |
||||
self::EXPRESSION_TERNARY_OP => array( self::TYPE_COLON => true ), |
||||
self::PAREN_EXPRESSION => array( self::TYPE_PAREN_CLOSE => true ), |
||||
self::PAREN_EXPRESSION_OP => array( self::TYPE_PAREN_CLOSE => true ), |
||||
self::PROPERTY_EXPRESSION => array( self::TYPE_BRACE_CLOSE => true ), |
||||
self::PROPERTY_EXPRESSION_OP => array( self::TYPE_BRACE_CLOSE => true ) |
||||
); |
||||
|
||||
// $semicolon : Rules for when a semicolon insertion is appropriate |
||||
$semicolon = array( |
||||
self::EXPRESSION_NO_NL => array( |
||||
self::TYPE_UN_OP => true, |
||||
self::TYPE_INCR_OP => true, |
||||
self::TYPE_ADD_OP => true, |
||||
self::TYPE_BRACE_OPEN => true, |
||||
self::TYPE_PAREN_OPEN => true, |
||||
self::TYPE_RETURN => true, |
||||
self::TYPE_IF => true, |
||||
self::TYPE_DO => true, |
||||
self::TYPE_FUNC => true, |
||||
self::TYPE_LITERAL => true |
||||
), |
||||
self::EXPRESSION_OP => array( |
||||
self::TYPE_UN_OP => true, |
||||
self::TYPE_INCR_OP => true, |
||||
self::TYPE_BRACE_OPEN => true, |
||||
self::TYPE_RETURN => true, |
||||
self::TYPE_IF => true, |
||||
self::TYPE_DO => true, |
||||
self::TYPE_FUNC => true, |
||||
self::TYPE_LITERAL => true |
||||
) |
||||
); |
||||
|
||||
// Rules for when newlines should be inserted if |
||||
// $statementsOnOwnLine is enabled. |
||||
// $newlineBefore is checked before switching state, |
||||
// $newlineAfter is checked after |
||||
$newlineBefore = array( |
||||
self::STATEMENT => array( |
||||
self::TYPE_BRACE_CLOSE => true, |
||||
), |
||||
); |
||||
$newlineAfter = array( |
||||
self::STATEMENT => array( |
||||
self::TYPE_BRACE_OPEN => true, |
||||
self::TYPE_PAREN_CLOSE => true, |
||||
self::TYPE_SEMICOLON => true, |
||||
), |
||||
); |
||||
|
||||
// $divStates : Contains all states that can be followed by a division operator |
||||
$divStates = array( |
||||
self::EXPRESSION_OP => true, |
||||
self::EXPRESSION_TERNARY_OP => true, |
||||
self::PAREN_EXPRESSION_OP => true, |
||||
self::PROPERTY_EXPRESSION_OP => true |
||||
); |
||||
|
||||
// Here's where the minifying takes place: Loop through the input, looking for tokens |
||||
// and output them to $out, taking actions to the above defined rules when appropriate. |
||||
$out = ''; |
||||
$pos = 0; |
||||
$length = strlen( $s ); |
||||
$lineLength = 0; |
||||
$newlineFound = true; |
||||
$state = self::STATEMENT; |
||||
$stack = array(); |
||||
$last = ';'; // Pretend that we have seen a semicolon yet |
||||
while( $pos < $length ) { |
||||
// First, skip over any whitespace and multiline comments, recording whether we |
||||
// found any newline character |
||||
$skip = strspn( $s, " \t\n\r\xb\xc", $pos ); |
||||
if( !$skip ) { |
||||
$ch = $s[$pos]; |
||||
if( $ch === '/' && substr( $s, $pos, 2 ) === '/*' ) { |
||||
// Multiline comment. Search for the end token or EOT. |
||||
$end = strpos( $s, '*/', $pos + 2 ); |
||||
$skip = $end === false ? $length - $pos : $end - $pos + 2; |
||||
} |
||||
} |
||||
if( $skip ) { |
||||
// The semicolon insertion mechanism needs to know whether there was a newline |
||||
// between two tokens, so record it now. |
||||
if( !$newlineFound && strcspn( $s, "\r\n", $pos, $skip ) !== $skip ) { |
||||
$newlineFound = true; |
||||
} |
||||
$pos += $skip; |
||||
continue; |
||||
} |
||||
// Handle C++-style comments and html comments, which are treated as single line |
||||
// comments by the browser, regardless of whether the end tag is on the same line. |
||||
// Handle --> the same way, but only if it's at the beginning of the line |
||||
if( ( $ch === '/' && substr( $s, $pos, 2 ) === '//' ) |
||||
|| ( $ch === '<' && substr( $s, $pos, 4 ) === '<!--' ) |
||||
|| ( $ch === '-' && $newlineFound && substr( $s, $pos, 3 ) === '-->' ) |
||||
) { |
||||
$pos += strcspn( $s, "\r\n", $pos ); |
||||
continue; |
||||
} |
||||
|
||||
// Find out which kind of token we're handling. $end will point past the end of it. |
||||
$end = $pos + 1; |
||||
// Handle string literals |
||||
if( $ch === "'" || $ch === '"' ) { |
||||
// Search to the end of the string literal, skipping over backslash escapes |
||||
$search = $ch . '\\'; |
||||
do{ |
||||
$end += strcspn( $s, $search, $end ) + 2; |
||||
} while( $end - 2 < $length && $s[$end - 2] === '\\' ); |
||||
$end--; |
||||
// We have to distinguish between regexp literals and division operators |
||||
// A division operator is only possible in certain states |
||||
} elseif( $ch === '/' && !isset( $divStates[$state] ) ) { |
||||
// Regexp literal, search to the end, skipping over backslash escapes and |
||||
// character classes |
||||
for( ; ; ) { |
||||
do{ |
||||
$end += strcspn( $s, '/[\\', $end ) + 2; |
||||
} while( $end - 2 < $length && $s[$end - 2] === '\\' ); |
||||
$end--; |
||||
if( $end - 1 >= $length || $s[$end - 1] === '/' ) { |
||||
break; |
||||
} |
||||
do{ |
||||
$end += strcspn( $s, ']\\', $end ) + 2; |
||||
} while( $end - 2 < $length && $s[$end - 2] === '\\' ); |
||||
$end--; |
||||
}; |
||||
// Search past the regexp modifiers (gi) |
||||
while( $end < $length && ctype_alpha( $s[$end] ) ) { |
||||
$end++; |
||||
} |
||||
} elseif( |
||||
$ch === '0' |
||||
&& ($pos + 1 < $length) && ($s[$pos + 1] === 'x' || $s[$pos + 1] === 'X' ) |
||||
) { |
||||
// Hex numeric literal |
||||
$end++; // x or X |
||||
$len = strspn( $s, '0123456789ABCDEFabcdef', $end ); |
||||
if ( !$len ) { |
||||
return self::parseError($s, $pos, 'Expected a hexadecimal number but found ' . substr( $s, $pos, 5 ) . '...' ); |
||||
} |
||||
$end += $len; |
||||
} elseif( |
||||
ctype_digit( $ch ) |
||||
|| ( $ch === '.' && $pos + 1 < $length && ctype_digit( $s[$pos + 1] ) ) |
||||
) { |
||||
$end += strspn( $s, '0123456789', $end ); |
||||
$decimal = strspn( $s, '.', $end ); |
||||
if ($decimal) { |
||||
if ( $decimal > 2 ) { |
||||
return self::parseError($s, $end, 'The number has too many decimal points' ); |
||||
} |
||||
$end += strspn( $s, '0123456789', $end + 1 ) + $decimal; |
||||
} |
||||
$exponent = strspn( $s, 'eE', $end ); |
||||
if( $exponent ) { |
||||
if ( $exponent > 1 ) { |
||||
return self::parseError($s, $end, 'Number with several E' ); |
||||
} |
||||
$end++; |
||||
|
||||
// + sign is optional; - sign is required. |
||||
$end += strspn( $s, '-+', $end ); |
||||
$len = strspn( $s, '0123456789', $end ); |
||||
if ( !$len ) { |
||||
return self::parseError($s, $pos, 'No decimal digits after e, how many zeroes should be added?' ); |
||||
} |
||||
$end += $len; |
||||
} |
||||
} elseif( isset( $opChars[$ch] ) ) { |
||||
// Punctuation character. Search for the longest matching operator. |
||||
while( |
||||
$end < $length |
||||
&& isset( $tokenTypes[substr( $s, $pos, $end - $pos + 1 )] ) |
||||
) { |
||||
$end++; |
||||
} |
||||
} else { |
||||
// Identifier or reserved word. Search for the end by excluding whitespace and |
||||
// punctuation. |
||||
$end += strcspn( $s, " \t\n.;,=<>+-{}()[]?:*/%'\"!&|^~\xb\xc\r", $end ); |
||||
} |
||||
|
||||
// Now get the token type from our type array |
||||
$token = substr( $s, $pos, $end - $pos ); // so $end - $pos == strlen( $token ) |
||||
$type = isset( $tokenTypes[$token] ) ? $tokenTypes[$token] : self::TYPE_LITERAL; |
||||
|
||||
if( $newlineFound && isset( $semicolon[$state][$type] ) ) { |
||||
// This token triggers the semicolon insertion mechanism of javascript. While we |
||||
// could add the ; token here ourselves, keeping the newline has a few advantages. |
||||
$out .= "\n"; |
||||
$state = self::STATEMENT; |
||||
$lineLength = 0; |
||||
} elseif( $maxLineLength > 0 && $lineLength + $end - $pos > $maxLineLength && |
||||
!isset( $semicolon[$state][$type] ) && $type !== self::TYPE_INCR_OP ) |
||||
{ |
||||
// This line would get too long if we added $token, so add a newline first. |
||||
// Only do this if it won't trigger semicolon insertion and if it won't |
||||
// put a postfix increment operator on its own line, which is illegal in js. |
||||
$out .= "\n"; |
||||
$lineLength = 0; |
||||
// Check, whether we have to separate the token from the last one with whitespace |
||||
} elseif( !isset( $opChars[$last] ) && !isset( $opChars[$ch] ) ) { |
||||
$out .= ' '; |
||||
$lineLength++; |
||||
// Don't accidentally create ++, -- or // tokens |
||||
} elseif( $last === $ch && ( $ch === '+' || $ch === '-' || $ch === '/' ) ) { |
||||
$out .= ' '; |
||||
$lineLength++; |
||||
} |
||||
|
||||
$out .= $token; |
||||
$lineLength += $end - $pos; // += strlen( $token ) |
||||
$last = $s[$end - 1]; |
||||
$pos = $end; |
||||
$newlineFound = false; |
||||
|
||||
// Output a newline after the token if required |
||||
// This is checked before AND after switching state |
||||
$newlineAdded = false; |
||||
if ( $statementsOnOwnLine && !$newlineAdded && isset( $newlineBefore[$state][$type] ) ) { |
||||
$out .= "\n"; |
||||
$lineLength = 0; |
||||
$newlineAdded = true; |
||||
} |
||||
|
||||
// Now that we have output our token, transition into the new state. |
||||
if( isset( $push[$state][$type] ) && count( $stack ) < self::STACK_LIMIT ) { |
||||
$stack[] = $push[$state][$type]; |
||||
} |
||||
if( $stack && isset( $pop[$state][$type] ) ) { |
||||
$state = array_pop( $stack ); |
||||
} elseif( isset( $goto[$state][$type] ) ) { |
||||
$state = $goto[$state][$type]; |
||||
} |
||||
|
||||
// Check for newline insertion again |
||||
if ( $statementsOnOwnLine && !$newlineAdded && isset( $newlineAfter[$state][$type] ) ) { |
||||
$out .= "\n"; |
||||
$lineLength = 0; |
||||
} |
||||
} |
||||
return $out; |
||||
} |
||||
|
||||
static function parseError($fullJavascript, $position, $errorMsg) { |
||||
// TODO: Handle the error: trigger_error, throw exception, return false... |
||||
return false; |
||||
} |
||||
} |
||||
@ -0,0 +1,12 @@ |
||||
<?php |
||||
|
||||
if ($service == 'core.css'){ |
||||
$minimizer = new OC_Minimizer_CSS(); |
||||
$files = $minimizer->findFiles(OC_Util::$core_styles); |
||||
$minimizer->output($files); |
||||
} |
||||
else if ($service == 'core.js'){ |
||||
$minimizer = new OC_Minimizer_JS(); |
||||
$files = $minimizer->findFiles(OC_Util::$core_scripts); |
||||
$minimizer->output($files); |
||||
} |
||||
@ -0,0 +1,39 @@ |
||||
<?php |
||||
|
||||
abstract class OC_Minimizer |
||||
{ |
||||
protected $files = array(); |
||||
|
||||
protected function appendIfExist($root, $webroot, $file) { |
||||
if (is_file($root.'/'.$file)) { |
||||
$this->files[] = array($root, $webroot, $file); |
||||
return true; |
||||
} |
||||
return false; |
||||
} |
||||
|
||||
public function getLastModified($files) { |
||||
$last_modified = 0; |
||||
foreach($files as $file_info) { |
||||
$file = $file_info[0] . '/' . $file_info[2]; |
||||
$filemtime = filemtime($file); |
||||
if ($filemtime > $last_modified) { |
||||
$last_modified = $filemtime; |
||||
} |
||||
} |
||||
return $last_modified; |
||||
} |
||||
|
||||
abstract public function minimizeFiles($files); |
||||
|
||||
public function output($files) { |
||||
header('Content-Type: '.$this->contentType); |
||||
OC_Response::enableCaching(); |
||||
$last_modified = $this->getLastModified($files); |
||||
OC_Response::setLastModifiedHeader($last_modified); |
||||
|
||||
$out = $this->minimizeFiles($files); |
||||
header('Content-Length: '.strlen($out)); |
||||
echo $out; |
||||
} |
||||
} |
||||
@ -0,0 +1,73 @@ |
||||
<?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; |
||||
} |
||||
} |
||||
@ -0,0 +1,62 @@ |
||||
<?php |
||||
|
||||
require_once('mediawiki/JavaScriptMinifier.php'); |
||||
|
||||
class OC_Minimizer_JS extends OC_Minimizer |
||||
{ |
||||
protected $contentType = 'application/javascript'; |
||||
|
||||
public function findFiles($scripts) { |
||||
// Read the selected theme from the config file |
||||
$theme=OC_Config::getValue( "theme" ); |
||||
|
||||
// Read the detected formfactor and use the right file name. |
||||
$fext = OC_Template::getFormFactorExtension(); |
||||
// Add the core js files or the js files provided by the selected theme |
||||
foreach($scripts as $script){ |
||||
// Is it in 3rd party? |
||||
if($this->appendIfExist(OC::$THIRDPARTYROOT, OC::$THIRDPARTYWEBROOT, $script.'.js')) { |
||||
|
||||
// Is it in apps and overwritten by the theme? |
||||
}elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "themes/$theme/apps/$script$fext.js" )) { |
||||
}elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "themes/$theme/apps/$script.js" )) { |
||||
|
||||
// Is it part of an app? |
||||
}elseif($this->appendIfExist(OC::$APPSROOT, OC::$APPSWEBROOT, "apps/$script$fext.js" )) { |
||||
}elseif($this->appendIfExist(OC::$APPSROOT, OC::$APPSWEBROOT, "apps/$script.js" )) { |
||||
|
||||
// Is it in the owncloud root but overwritten by the theme? |
||||
}elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "themes/$theme/$script$fext.js" )) { |
||||
}elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "themes/$theme/$script.js" )) { |
||||
|
||||
// Is it in the owncloud root ? |
||||
}elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "$script$fext.js" )) { |
||||
}elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "$script.js" )) { |
||||
|
||||
// Is in core but overwritten by a theme? |
||||
}elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "themes/$theme/core/$script$fext.js" )) { |
||||
}elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "themes/$theme/core/$script.js" )) { |
||||
|
||||
// Is it in core? |
||||
}elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "core/$script$fext.js" )) { |
||||
}elseif($this->appendIfExist(OC::$SERVERROOT, OC::$WEBROOT, "core/$script.js" )) { |
||||
|
||||
}else{ |
||||
echo('js file not found: script:'.$script.' formfactor:'.$fext.' webroot:'.OC::$WEBROOT.' serverroot:'.OC::$SERVERROOT); |
||||
die(); |
||||
} |
||||
} |
||||
return $this->files; |
||||
} |
||||
|
||||
public function minimizeFiles($files) { |
||||
$js_out = ''; |
||||
foreach($files as $file_info) { |
||||
$file = $file_info[0] . '/' . $file_info[2]; |
||||
$js_out .= '/* ' . $file . ' */' . "\n"; |
||||
$js_out .= file_get_contents($file); |
||||
} |
||||
$js_out = JavaScriptMinifier::minify($js_out); |
||||
return $js_out; |
||||
} |
||||
} |
||||
Loading…
Reference in new issue