Commit in resource efficient lcfirst and ucfirst

Uses PHP mbstring feature, in case it is compiled in.
In case of language-dependant failures,
those should be solved in Language classes.

diff --git a/languages/LanguageUtf8.php b/languages/LanguageUtf8.php
index 22c7832..2f60879 100644 (file)
--- a/languages/LanguageUtf8.php
+++ b/languages/LanguageUtf8.php
@@ -4,6 +4,10 @@ if( defined( "MEDIAWIKI" ) ) {
 $wgInputEncoding    = "UTF-8";
 $wgOutputEncoding      = "UTF-8";
 
+if (function_exists('mb_internal_encoding')) {
+       mb_internal_encoding('UTF-8');
+}
+
 $wikiUpperChars = $wgMemc->get( $key1 = "$wgDBname:utf8:upper" );
 $wikiLowerChars = $wgMemc->get( $key2 = "$wgDBname:utf8:lower" );
 
@@ -19,19 +23,27 @@ class LanguageUtf8 extends Language {
        function ucfirst( $string ) {
                # For most languages, this is a wrapper for ucfirst()
                # But that doesn't work right in a UTF-8 locale
-               global $wikiUpperChars;
-               return preg_replace (
-               "/^([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/e",
-               "strtr ( \"\$1\" , \$wikiUpperChars )",
-               $string );
+               if (function_exists('mb_strtoupper')) {
+                       return mb_strtoupper(mb_substr($string,0,1)).mb_substr($string,1);
+               } else {
+                   global $wikiUpperChars;
+                   return preg_replace (
+                   "/^([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/e",
+                   "strtr ( \"\$1\" , \$wikiUpperChars )",
+                   $string );
+               }
        }
        
        function lcfirst( $string ) {
-               global $wikiLowerChars;
-               return preg_replace (
-               "/^([A-Z]|[\\xc0-\\xff][\\x80-\\xbf]*)/e",
-               "strtr ( \"\$1\" , \$wikiLowerChars )",
-               $string );
+               if (function_exists('mb_strtolower')) {
+                       return mb_strtolower(mb_substr($string,0,1)).mb_substr($string,1);
+               } else {
+                   global $wikiLowerChars;
+                   return preg_replace (
+                   "/^([A-Z]|[\\xc0-\\xff][\\x80-\\xbf]*)/e",
+                   "strtr ( \"\$1\" , \$wikiLowerChars )",
+                   $string );
+               }
        }
 
        function stripForSearch( $string ) {