/*
* 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
+ * 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
+ * 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.
*/
/**
* 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.
+ * 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\([\'"]?(?P<file>[^\?\)\:\'"]*)\??[^\)\'"]*[\'"]?\)';
*/
public static function getLocalFileReferences( $source, $path = null ) {
$files = array();
- if ( preg_match_all( '/' . self::URL_REGEX . '/', $source, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER ) ) {
+ $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]}";
+ $file = ( isset( $path )
+ ? rtrim( $path, '/' ) . '/'
+ : '' ) . "{$match['file'][0]}";
// Only proceed if we can access the file
if ( !is_null( $path ) && file_exists( $file ) ) {
}
/**
- * Remaps CSS URL paths and automatically embeds data URIs for URL rules preceded by an /* @embed * / comment
+ * 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
* @return string Remapped CSS data
*/
public static function remap( $source, $local, $remote, $embed = true ) {
- $pattern = '/((?P<embed>\s*\/\*\s*\@embed\s*\*\/)(?P<pre>[^\;\}]*))?' . self::URL_REGEX . '(?P<post>[^;]*)[\;]?/';
+ $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 ) ) {
// Shortcuts
$url = "{$remote}/{$match['file'][0]}";
// Only proceed if we can access the file
if ( file_exists( $file ) ) {
- // Add version parameter as a time-stamp in ISO 8601 format, using Z for the timezone, meaning GMT
+ // 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 ) );
// If we the mime-type can't be determined, no embedding will take place
$type = false;
$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' ) ) {
- // As of PHP 5.3, this is how you get the mime-type of a file; it uses the Fileinfo PECL extension
+ // 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' ) )
+ {
+ // As of PHP 5.3, this is how you get the mime-type of a file;
+ // it uses the Fileinfo PECL extension
$type = finfo_file( finfo_open( FILEINFO_MIME_TYPE ), $realpath );
} else if ( function_exists( 'mime_content_type' ) ) {
- // Before this was deprecated in PHP 5.3, this used to be how you get the mime-type of a file
+ // Before this was deprecated in PHP 5.3,
+ // this used to be how you get the mime-type of a file
$type = mime_content_type( $file );
} else {
- // Worst-case scenario has happend, use the file extension to infer the mime-type
+ // Worst-case scenario has happend,
+ // use the file extension to infer the mime-type
$ext = strtolower( pathinfo( $file, PATHINFO_EXTENSION ) );
if ( isset( self::$mimeTypes[$ext] ) ) {
$type = self::$mimeTypes[$ext];
}
}
- // Detect when URLs were preceeded with embed tags, and also verify file size is below the limit
- if ( $embed && $type && $match['embed'][1] > 0 && filesize( $file ) < self::EMBED_SIZE_LIMIT ) {
+ // Detect when URLs were preceeded with embed tags,
+ // and also verify file size is below the limit
+ if ( $embed && $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}){$post};{$pre}url({$url}){$post}!ie;";
+ // 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;";
} else {
- // Build a CSS property with a remapped and versioned URL, preserving comment for debug mode
+ // Build a CSS property with a remapped and versioned URL,
+ // preserving comment for debug mode
$replacement = "{$embed}{$pre}url({$url}){$post};";
}
// Perform replacement on the source
- $source = substr_replace( $source, $replacement, $match[0][1], strlen( $match[0][0] ) );
+ $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;