5 * Copyright (c) 2002-2011, Sebastian Bergmann <sebastian@phpunit.de>.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * * Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * * Neither the name of Sebastian Bergmann nor the names of his
21 * contributors may be used to endorse or promote products derived
22 * from this software without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
27 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
28 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
30 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
31 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
32 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
34 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
39 * @author Sebastian Bergmann <sebastian@phpunit.de>
40 * @copyright 2002-2011 Sebastian Bergmann <sebastian@phpunit.de>
41 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
42 * @link http://www.phpunit.de/
43 * @since File available since Release 3.6.0
51 * @author Sebastian Bergmann <sebastian@phpunit.de>
52 * @copyright 2002-2011 Sebastian Bergmann <sebastian@phpunit.de>
53 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
54 * @version Release: 3.6.3
55 * @link http://www.phpunit.de/
56 * @since Class available since Release 3.6.0
58 class PHPUnit_Util_String
61 * Converts a string to UTF-8 encoding.
63 * @param string $string
66 public static function convertToUtf8($string)
68 if (!self::isUtf8($string)) {
69 if (function_exists('mb_convert_encoding')) {
70 $string = mb_convert_encoding($string, 'UTF-8');
72 $string = utf8_encode($string);
80 * Checks a string for UTF-8 encoding.
82 * @param string $string
85 protected static function isUtf8($string)
87 $length = strlen($string);
89 for ($i = 0; $i < $length; $i++) {
90 if (ord($string[$i]) < 0x80) {
94 else if ((ord($string[$i]) & 0xE0) == 0xC0) {
98 else if ((ord($string[$i]) & 0xF0) == 0xE0) {
102 else if ((ord($string[$i]) & 0xF0) == 0xF0) {
110 for ($j = 0; $j < $n; $j++) {
111 if ((++$i == $length) || ((ord($string[$i]) & 0xC0) != 0x80)) {