Initial Commit

database/php/pear/PHPUnit/Util/String.php

@@ -0,0 +1,118 @@
+<?php
+/**
+ * PHPUnit
+ *
+ * Copyright (c) 2001-2013, Sebastian Bergmann <sebastian@phpunit.de>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *
+ *   * Neither the name of Sebastian Bergmann nor the names of his
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * @package    PHPUnit
+ * @subpackage Util
+ * @author     Sebastian Bergmann <sebastian@phpunit.de>
+ * @copyright  2001-2013 Sebastian Bergmann <sebastian@phpunit.de>
+ * @license    http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
+ * @link       http://www.phpunit.de/
+ * @since      File available since Release 3.6.0
+ */
+
+/**
+ * String helpers.
+ *
+ * @package    PHPUnit
+ * @subpackage Util
+ * @author     Sebastian Bergmann <sebastian@phpunit.de>
+ * @copyright  2001-2013 Sebastian Bergmann <sebastian@phpunit.de>
+ * @license    http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
+ * @link       http://www.phpunit.de/
+ * @since      Class available since Release 3.6.0
+ */
+class PHPUnit_Util_String
+{
+    /**
+     * Converts a string to UTF-8 encoding.
+     *
+     * @param  string $string
+     * @return string
+     */
+    public static function convertToUtf8($string)
+    {
+        if (!self::isUtf8($string)) {
+            if (function_exists('mb_convert_encoding')) {
+                $string = mb_convert_encoding($string, 'UTF-8');
+            } else {
+                $string = utf8_encode($string);
+            }
+        }
+
+        return $string;
+    }
+
+    /**
+     * Checks a string for UTF-8 encoding.
+     *
+     * @param  string $string
+     * @return boolean
+     */
+    protected static function isUtf8($string)
+    {
+        $length = strlen($string);
+
+        for ($i = 0; $i < $length; $i++) {
+            if (ord($string[$i]) < 0x80) {
+                $n = 0;
+            }
+
+            else if ((ord($string[$i]) & 0xE0) == 0xC0) {
+                $n = 1;
+            }
+
+            else if ((ord($string[$i]) & 0xF0) == 0xE0) {
+                $n = 2;
+            }
+
+            else if ((ord($string[$i]) & 0xF0) == 0xF0) {
+                $n = 3;
+            }
+
+            else {
+                return FALSE;
+            }
+
+            for ($j = 0; $j < $n; $j++) {
+                if ((++$i == $length) || ((ord($string[$i]) & 0xC0) != 0x80)) {
+                    return FALSE;
+                }
+            }
+        }
+
+        return TRUE;
+    }
+}