<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * * An open source application development framework for PHP 5.1.6 or newer * * @package CodeIgniter * @author ExpressionEngine Dev Team * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. * @license http://codeigniter.com/user_guide/license.html * @link http://codeigniter.com * @since Version 2.0 * @filesource */ // ------------------------------------------------------------------------ /** * Utf8 Class * * Provides support for UTF-8 environments * * @package CodeIgniter * @subpackage Libraries * @category UTF-8 * @author ExpressionEngine Dev Team * @link http://codeigniter.com/user_guide/libraries/utf8.html */ class CI_Utf8 { /** * Constructor * * Determines if UTF-8 support is to be enabled * */ function __construct() { log_message('debug', "Utf8 Class Initialized"); global $CFG; if ( preg_match('/./u', 'é') === 1 // PCRE must support UTF-8 AND function_exists('iconv') // iconv must be installed AND ini_get('mbstring.func_overload') != 1 // Multibyte string function overloading cannot be enabled AND $CFG->item('charset') == 'UTF-8' // Application charset must be UTF-8 ) { log_message('debug', "UTF-8 Support Enabled"); define('UTF8_ENABLED', TRUE); // set internal encoding for multibyte string functions if necessary // and set a flag so we don't have to repeatedly use extension_loaded() // or function_exists() if (extension_loaded('mbstring')) { define('MB_ENABLED', TRUE); mb_internal_encoding('UTF-8'); } else { define('MB_ENABLED', FALSE); } } else { log_message('debug', "UTF-8 Support Disabled"); define('UTF8_ENABLED', FALSE); } } // -------------------------------------------------------------------- /** * Clean UTF-8 strings * * Ensures strings are UTF-8 * * @access public * @param string * @return string */ function clean_string($str) { if ($this->_is_ascii($str) === FALSE) { $str = @iconv('UTF-8', 'UTF-8//IGNORE', $str); } return $str; } // -------------------------------------------------------------------- /** * Remove ASCII control characters * * Removes all ASCII control characters except horizontal tabs, * line feeds, and carriage returns, as all others can cause * problems in XML * * @access public * @param string * @return string */ function safe_ascii_for_xml($str) { return remove_invisible_characters($str, FALSE); } // -------------------------------------------------------------------- /** * Convert to UTF-8 * * Attempts to convert a string to UTF-8 * * @access public * @param string * @param string - input encoding * @return string */ function convert_to_utf8($str, $encoding) { if (function_exists('iconv')) { $str = @iconv($encoding, 'UTF-8', $str); } elseif (function_exists('mb_convert_encoding')) { $str = @mb_convert_encoding($str, 'UTF-8', $encoding); } else { return FALSE; } return $str; } // -------------------------------------------------------------------- /** * Is ASCII? * * Tests if a string is standard 7-bit ASCII or not * * @access public * @param string * @return bool */ function _is_ascii($str) { return (preg_match('/[^\x00-\x7F]/S', $str) == 0); } // -------------------------------------------------------------------- } // End Utf8 Class /* End of file Utf8.php */ /* Location: ./system/core/Utf8.php */ SIMPAN PERUBAHAN