<?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.
- */
-
-/**
- * Transforms CSS data
- *
- * This class provides minification, URL remapping, URL extracting, and data-URL embedding.
- *
+ * 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
*
*/
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',
'tiff' => 'image/tiff',
'xbm' => 'image/x-xbitmap',
);
-
+
/* Static Methods */
-
+
/**
* Gets a list of local file paths which are referenced in a CSS style sheet
*
}
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
// 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 );
- } else if ( function_exists( 'mime_content_type' ) ) {
+ } 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 {
}
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 $embed ???
+ * @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, $embed = true ) {
+ 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 absolute URIs
- if ( preg_match( '/^https?:\/\//', $match['file'][0] ) ) {
+ // 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 URL
- $source = substr_replace( $source, wfExpandUrl( $match['file'][0] ),
- $match['file'][1], strlen( $match['file'][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] );
+ $offset = $match[0][1] + strlen( $match[0][0] ) + $lengthIncrease;
continue;
}
+
+ // Guard against double slashes, because "some/remote/../foo.png"
+ // resolves to "some/remote/foo.png" on (some?) clients (bug 27052).
+ if ( substr( $remote, -1 ) == '/' ) {
+ $remote = substr( $remote, 0, -1 );
+ }
+
// Shortcuts
$embed = $match['embed'][0];
$pre = $match['pre'][0];
$query = $match['query'][0];
$url = "{$remote}/{$match['file'][0]}";
$file = "{$local}/{$match['file'][0]}";
+
$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 ( $embed ) {
+ if ( $embedData && $embed ) {
$type = self::getMimeType( $file );
// Detect when URLs were preceeded with embed tags, and also verify file size is
// below the limit
}
if ( $replacement === false ) {
// Assume that all paths are relative to $remote, and make them absolute
- $replacement = "{$embed}{$pre}url({$url}){$post};";
+ $replacement = "{$embed}{$pre}url({$url}){$post};";
}
- } else if ( $local === false ) {
+ } elseif ( $local === false ) {
// Assume that all paths are relative to $remote, and make them absolute
$replacement = "{$embed}{$pre}url({$url}{$query}){$post};";
}
dépôts / lhc / web / wiklou.git / blobdiff