Get rid of more preg_match used for whitespace matching.

--HG--
extra : convert_revision : svn%3Aacbfec75-9323-0410-a652-858a13e371e0/trunk%401286

Author: gsnedders

library/HTML5/Tokenizer.php

@@ -1456,7 +1456,7 @@ private function beforeDoctypeNameState() {
         /* Consume the next input character: */
         $char = $this->c;
 
-        if(preg_match('/^[\t\n\x0a\x0c ]$/', $char)) {
+        if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
             /* U+0009 CHARACTER TABULATION
                U+000A LINE FEED (LF)
                U+000C FORM FEED (FF)
@@ -1631,7 +1631,7 @@ private function beforeDoctypePublicIdentifierState() {
         /* Consume the next input character: */
         $char = $this->c;
 
-        if (preg_match('/^[\t\n\x0c ]$/', $char)) {
+        if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
             /* U+0009 CHARACTER TABULATION
                U+000A LINE FEED (LF)
                U+000C FORM FEED (FF)
@@ -1740,7 +1740,7 @@ private function afterDoctypePublicIdentifierState() {
         /* Consume the next input character: */
         $char = $this->c;
 
-        if (preg_match('/^[\t\n\x0c ]$/', $char)) {
+        if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
             /* U+0009 CHARACTER TABULATION
                U+000A LINE FEED (LF)
                U+000C FORM FEED (FF)
@@ -1785,7 +1785,7 @@ private function beforeDoctypeSystemIdentifierState() {
         /* Consume the next input character: */
         $char = $this->c;
 
-        if (preg_match('/^[\t\n\x0c ]$/', $char)) {
+        if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
             /* U+0009 CHARACTER TABULATION
                U+000A LINE FEED (LF)
                U+000C FORM FEED (FF)
@@ -1894,7 +1894,7 @@ private function afterDoctypeSystemIdentifierState() {
         /* Consume the next input character: */
         $char = $this->c;
 
-        if (preg_match('/^[\t\n\x0c ]$/', $char)) {
+        if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
             /* U+0009 CHARACTER TABULATION
                U+000A LINE FEED (LF)
                U+000C FORM FEED (FF)