first commit

libraries/phputf8/strcspn.php

@@ -0,0 +1,41 @@
+<?php
+/**
+* @version $Id$
+* @package utf8
+* @subpackage strings
+*/
+
+//---------------------------------------------------------------
+/**
+* UTF-8 aware alternative to strcspn
+* Find length of initial segment not matching mask
+* Note: requires utf8_strlen and utf8_substr (if start, length are used)
+* @param string
+* @return int
+* @see http://www.php.net/strcspn
+* @see utf8_strlen
+* @package utf8
+* @subpackage strings
+*/
+function utf8_strcspn($str, $mask, $start = NULL, $length = NULL) {
+
+    if ( empty($mask) || strlen($mask) == 0 ) {
+        return NULL;
+    }
+
+    $mask = preg_replace('!([\\\\\\-\\]\\[/^])!','\\\${1}',$mask);
+
+    if ( $start !== NULL || $length !== NULL ) {
+        $str = utf8_substr($str, $start, $length);
+    }
+
+    preg_match('/^[^'.$mask.']+/u',$str, $matches);
+
+    if ( isset($matches[0]) ) {
+        return utf8_strlen($matches[0]);
+    }
+
+    return 0;
+
+}
+