/**
* Gets a list of local file paths which are referenced in a CSS style sheet
*
+ * This function will always return an empty array if the second parameter is not given or null
+ * for backwards-compatibility.
+ *
* @param string $source CSS data to remap
* @param string $path File path where the source was read from (optional)
* @return array List of local file references
*/
public static function getLocalFileReferences( $source, $path = null ) {
+ if ( $path === null ) {
+ return array();
+ }
+
+ $path = rtrim( $path, '/' ) . '/';
$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]}";
+ $url = $match['file'][0];
- // Only proceed if we can access the file
- if ( !is_null( $path ) && file_exists( $file ) ) {
- $files[] = $file;
+ // Skip fully-qualified and protocol-relative URLs and data URIs
+ if ( substr( $url, 0, 2 ) === '//' || parse_url( $url, PHP_URL_SCHEME ) ) {
+ break;
}
+
+ $file = $path . $url;
+ // Skip non-existent files
+ if ( file_exists( $file ) ) {
+ break;
+ }
+
+ $files[] = $file;
}
}
return $files;
* 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;
}
}
/**
- * 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(…)').
+ // 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 );
+ return preg_replace_callback(
+ $pattern,
+ function ( $matchOuter ) use ( $local, $remote, $embedData ) {
+ $rule = $matchOuter[0];
- // 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 . '/';
+ // Check for global @embed comment and remove it
+ $embedAll = false;
+ $rule = preg_replace( '/^(\s*)' . CSSMin::EMBED_REGEX . '\s*/', '$1', $rule, 1, $embedAll );
- $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 );
+ // 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 . '/';
- 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 );
- }
+ $ruleWithRemapped = preg_replace_callback(
+ $pattern,
+ function ( $match ) use ( $local, $remote ) {
+ $remapped = CSSMin::remapOne( $match['file'], $match['query'], $local, $remote, false );
- 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 );
+ 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 );
}
/**
$url = $file . $query;
// Skip fully-qualified and protocol-relative URLs and data URIs
- $urlScheme = substr( $url, 0, 2 ) === '//' || parse_url( $url, PHP_URL_SCHEME );
- if ( $urlScheme ) {
+ if ( substr( $url, 0, 2 ) === '//' || parse_url( $url, PHP_URL_SCHEME ) ) {
return $url;
}
dépôts / lhc / web / wiklou.git / blobdiff