/vendor/phpunit/phpunit/PHPUnit/Util/String.php
PHP | 118 lines | 42 code | 10 blank | 66 comment | 20 complexity | 26c274d696490da57e348c7809a16ffe MD5 | raw file
Possible License(s): BSD-3-Clause
- <?php
- /**
- * PHPUnit
- *
- * Copyright (c) 2001-2012, 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 2001-2012 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 2001-2012 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;
- }
- }