comparison vendor/masterminds/html5/src/HTML5/Parser/UTF8Utils.php @ 17:129ea1e6d783

Update, including to Drupal core 8.6.10

 <?php
+
 namespace Masterminds\HTML5\Parser;
+
 /*
  *
 * Portions based on code from html5lib files with the following copyright:
 
 Copyright 2009 Geoffrey Sneddon <http://gsnedders.com/>

 CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 */
+
+use Masterminds\HTML5\Exception;
+
 /**
- * UTF-8 Utilities
+ * UTF-8 Utilities.
  */
 class UTF8Utils
 {
-
     /**
      * The Unicode replacement character..
      */
     const FFFD = "\xEF\xBF\xBD";
 

      *
      * UTF-8 aware. This will try (in order) iconv,
      * MB, libxml, and finally a custom counter.
      *
      * @todo Move this to a general utility class.
+     *
+     * @param string $string
+     *
+     * @return int
      */
     public static function countChars($string)
     {
         // Get the length for the string we need.
         if (function_exists('mb_strlen')) {

      * Convert data from the given encoding to UTF-8.
      *
      * This has not yet been tested with charactersets other than UTF-8.
      * It should work with ISO-8859-1/-13 and standard Latin Win charsets.
      *
-     * @param string $data
-     *            The data to convert.
-     * @param string $encoding
-     *            A valid encoding. Examples: http://www.php.net/manual/en/mbstring.supported-encodings.php
+     * @param string $data     The data to convert
+     * @param string $encoding A valid encoding. Examples: http://www.php.net/manual/en/mbstring.supported-encodings.php
+     *
+     * @return string
      */
     public static function convertToUTF8($data, $encoding = 'UTF-8')
     {
         /*
          * From the HTML5 spec: Given an encoding, the bytes in the input stream must be converted to Unicode characters for the tokeniser, as described by the rules for that encoding, except that the leading U+FEFF BYTE ORDER MARK character, if any, must not be stripped by the encoding layer (it is stripped by the rule below). Bytes or sequences of bytes in the original byte stream that could not be converted to Unicode characters must be converted to U+FFFD REPLACEMENT CHARACTER code points.

             $save = mb_substitute_character();
             mb_substitute_character('none');
             $data = mb_convert_encoding($data, 'UTF-8', $encoding);
             mb_substitute_character($save);
         }        // @todo Get iconv running in at least some environments if that is possible.
-        elseif (function_exists('iconv') && $encoding != 'auto') {
+        elseif (function_exists('iconv') && 'auto' !== $encoding) {
             // fprintf(STDOUT, "iconv found\n");
             // iconv has the following behaviors:
             // - Overlong representations are ignored.
             // - Beyond Plane 16 is replaced with a lower char.
             // - Incomplete sequences generate a warning.
             $data = @iconv($encoding, 'UTF-8//IGNORE', $data);
         } else {
-            // we can make a conforming native implementation
             throw new Exception('Not implemented, please install mbstring or iconv');
         }
 
         /*
          * One leading U+FEFF BYTE ORDER MARK character must be ignored if any are present.
          */
-        if (substr($data, 0, 3) === "\xEF\xBB\xBF") {
+        if ("\xEF\xBB\xBF" === substr($data, 0, 3)) {
             $data = substr($data, 3);
         }
 
         return $data;
     }
 
     /**
      * Checks for Unicode code points that are not valid in a document.
      *
-     * @param string $data
-     *            A string to analyze.
-     * @return array An array of (string) error messages produced by the scanning.
+     * @param string $data A string to analyze
+     *
+     * @return array An array of (string) error messages produced by the scanning
      */
     public static function checkForIllegalCodepoints($data)
     {
-        if (! function_exists('preg_match_all')) {
-            throw\Exception('The PCRE library is not loaded or is not available.');
-        }
-
         // Vestigal error handling.
         $errors = array();
 
         /*
          * All U+0000 null characters in the input must be replaced by U+FFFD REPLACEMENT CHARACTERs. Any occurrences of such characters is a parse error.
          */
-        for ($i = 0, $count = substr_count($data, "\0"); $i < $count; $i ++) {
+        for ($i = 0, $count = substr_count($data, "\0"); $i < $count; ++$i) {
             $errors[] = 'null-character';
         }
 
         /*
          * Any occurrences of any characters in the ranges U+0001 to U+0008, U+000B, U+000E to U+001F, U+007F to U+009F, U+D800 to U+DFFF , U+FDD0 to U+FDEF, and characters U+FFFE, U+FFFF, U+1FFFE, U+1FFFF, U+2FFFE, U+2FFFF, U+3FFFE, U+3FFFF, U+4FFFE, U+4FFFF, U+5FFFE, U+5FFFF, U+6FFFE, U+6FFFF, U+7FFFE, U+7FFFF, U+8FFFE, U+8FFFF, U+9FFFE, U+9FFFF, U+AFFFE, U+AFFFF, U+BFFFE, U+BFFFF, U+CFFFE, U+CFFFF, U+DFFFE, U+DFFFF, U+EFFFE, U+EFFFF, U+FFFFE, U+FFFFF, U+10FFFE, and U+10FFFF are parse errors. (These are all control characters or permanently undefined Unicode characters.)

       |
         \xEF\xBF[\xBE\xBF] # U+FFFE and U+FFFF
       |
         [\xF0-\xF4][\x8F-\xBF]\xBF[\xBE\xBF] # U+nFFFE and U+nFFFF (1 <= n <= 10_{16})
       )/x', $data, $matches);
-        for ($i = 0; $i < $count; $i ++) {
+        for ($i = 0; $i < $count; ++$i) {
             $errors[] = 'invalid-codepoint';
         }
 
         return $errors;
     }