const EMBED_SIZE_LIMIT = 24576;
const URL_REGEX = 'url\(\s*[\'"]?(?P<file>[^\?\)\'"]*?)(?P<query>\?[^\)\'"]*?|)[\'"]?\s*\)';
const EMBED_REGEX = '\/\*\s*\@embed\s*\*\/';
+ const COMMENT_REGEX = '\/\*.*?\*\/';
/* Protected Static Members */
- /** @var array List of common image files extensions and mime-types */
+ /** @var array List of common image files extensions and MIME-types */
protected static $mimeTypes = array(
'gif' => 'image/gif',
'jpe' => 'image/jpeg',
* instead. If $sizeLimit is false, no limit is enforced.
* @return string|bool: Image contents encoded as a data URI or false.
*/
- public static function encodeImageAsDataURI( $file, $type = null, $sizeLimit = self::EMBED_SIZE_LIMIT ) {
+ public static function encodeImageAsDataURI( $file, $type = null,
+ $sizeLimit = self::EMBED_SIZE_LIMIT
+ ) {
if ( $sizeLimit !== false && filesize( $file ) >= $sizeLimit ) {
return false;
}
*/
public 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];
- }
}
+
+ // Infer the MIME-type from the file extension
+ $ext = strtolower( pathinfo( $file, PATHINFO_EXTENSION ) );
+ if ( isset( self::$mimeTypes[$ext] ) ) {
+ return self::$mimeTypes[$ext];
+ }
+
return false;
}
* Build a CSS 'url()' value for the given URL, quoting parentheses (and other funny characters)
* and escaping quotes as necessary.
*
+ * See http://www.w3.org/TR/css-syntax-3/#consume-a-url-token
+ *
* @param string $url URL to process
* @return string 'url()' value, usually just `"url($url)"`, quoted/escaped if necessary
*/
}
/**
- * Remaps CSS URL paths and automatically embeds data URIs for CSS rules or url() values
- * preceded by an / * @embed * / comment.
+ * Remaps CSS URL paths and automatically embeds data URIs for CSS rules
+ * or url() values preceded by an / * @embed * / comment.
*
* @param string $source CSS data to remap
* @param string $local File path where the source was read from
* @param string $remote URL path to the file
- * @param bool $embedData If false, never do any data URI embedding, even if / * @embed * / is found
+ * @param bool $embedData 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 ) {
$remote = substr( $remote, 0, -1 );
}
- // Note: This will not correctly handle cases where ';', '{' or '}' appears in the rule itself,
- // e.g. in a quoted string. You are advised not to use such characters in file names.
- // We also match start/end of the string to be consistent in edge-cases ('@import url(…)').
+ // Replace all comments by a placeholder so they will not interfere
+ // with the remapping
+ // Warning: This will also catch on anything looking like the start of
+ // a comment between quotation marks (e.g. "foo /* bar").
+ $comments = array();
+ $placeholder = uniqid( '', true );
+
+ $pattern = '/(?!' . CSSMin::EMBED_REGEX . ')(' . CSSMin::COMMENT_REGEX . ')/s';
+
+ $source = preg_replace_callback(
+ $pattern,
+ function ( $match ) use ( &$comments, $placeholder ) {
+ $comments[] = $match[ 0 ];
+ return $placeholder . ( count( $comments ) - 1 ) . 'x';
+ },
+ $source
+ );
+
+ // Note: This will not correctly handle cases where ';', '{' or '}'
+ // appears in the rule itself, e.g. in a quoted string. You are advised
+ // not to use such characters in file names. We also match start/end of
+ // the string to be consistent in edge-cases ('@import url(…)').
$pattern = '/(?:^|[;{])\K[^;{}]*' . CSSMin::URL_REGEX . '[^;}]*(?=[;}]|$)/';
- return preg_replace_callback( $pattern, function ( $matchOuter ) use ( $local, $remote, $embedData ) {
- $rule = $matchOuter[0];
-
- // Check for global @embed comment and remove it
- $embedAll = false;
- $rule = preg_replace( '/^(\s*)' . CSSMin::EMBED_REGEX . '\s*/', '$1', $rule, 1, $embedAll );
-
- // Build two versions of current rule: with remapped URLs and with embedded data: URIs (where possible)
- $pattern = '/(?P<embed>' . CSSMin::EMBED_REGEX . '\s*|)' . CSSMin::URL_REGEX . '/';
-
- $ruleWithRemapped = preg_replace_callback( $pattern, function ( $match ) use ( $local, $remote ) {
- $remapped = CSSMin::remapOne( $match['file'], $match['query'], $local, $remote, false );
- return CSSMin::buildUrlValue( $remapped );
- }, $rule );
-
- if ( $embedData ) {
- $ruleWithEmbedded = preg_replace_callback( $pattern, function ( $match ) use ( $embedAll, $local, $remote ) {
- $embed = $embedAll || $match['embed'];
- $embedded = CSSMin::remapOne( $match['file'], $match['query'], $local, $remote, $embed );
- return CSSMin::buildUrlValue( $embedded );
- }, $rule );
- }
- if ( $embedData && $ruleWithEmbedded !== $ruleWithRemapped ) {
- // Build 2 CSS properties; one which uses a base64 encoded data URI in place
- // of the @embed comment to try and retain line-number integrity, and the
- // other with a remapped an versioned URL and an Internet Explorer hack
- // making it ignored in all browsers that support data URIs
- return "$ruleWithEmbedded;$ruleWithRemapped!ie";
- } else {
- // No reason to repeat twice
- return $ruleWithRemapped;
- }
+ $source = preg_replace_callback(
+ $pattern,
+ function ( $matchOuter ) use ( $local, $remote, $embedData ) {
+ $rule = $matchOuter[0];
+
+ // Check for global @embed comment and remove it
+ $embedAll = false;
+ $rule = preg_replace( '/^(\s*)' . CSSMin::EMBED_REGEX . '\s*/', '$1', $rule, 1, $embedAll );
+
+ // Build two versions of current rule: with remapped URLs
+ // and with embedded data: URIs (where possible).
+ $pattern = '/(?P<embed>' . CSSMin::EMBED_REGEX . '\s*|)' . CSSMin::URL_REGEX . '/';
+
+ $ruleWithRemapped = preg_replace_callback(
+ $pattern,
+ function ( $match ) use ( $local, $remote ) {
+ $remapped = CSSMin::remapOne( $match['file'], $match['query'], $local, $remote, false );
+
+ return CSSMin::buildUrlValue( $remapped );
+ },
+ $rule
+ );
+
+ if ( $embedData ) {
+ $ruleWithEmbedded = preg_replace_callback(
+ $pattern,
+ function ( $match ) use ( $embedAll, $local, $remote ) {
+ $embed = $embedAll || $match['embed'];
+ $embedded = CSSMin::remapOne(
+ $match['file'],
+ $match['query'],
+ $local,
+ $remote,
+ $embed
+ );
+
+ return CSSMin::buildUrlValue( $embedded );
+ },
+ $rule
+ );
+ }
+
+ if ( $embedData && $ruleWithEmbedded !== $ruleWithRemapped ) {
+ // Build 2 CSS properties; one which uses a base64 encoded data URI in place
+ // of the @embed comment to try and retain line-number integrity, and the
+ // other with a remapped an versioned URL and an Internet Explorer hack
+ // making it ignored in all browsers that support data URIs
+ return "$ruleWithEmbedded;$ruleWithRemapped!ie";
+ } else {
+ // No reason to repeat twice
+ return $ruleWithRemapped;
+ }
+ }, $source );
+
+ // Re-insert comments
+ $pattern = '/' . $placeholder . '(\d+)x/';
+ $source = preg_replace_callback( $pattern, function( $match ) use ( &$comments ) {
+ return $comments[ $match[1] ];
}, $source );
+
+ return $source;
+
}
/**
dépôts / lhc / web / wiklou.git / blobdiff