/lenasys/trunk : contents of codeigniter/system/core/Utf8.php at revision 20.1.1

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<?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 */

20.1.1 by galaxyAbstractor * Added an simple admin panel to the codeviewer-cmssy stuff	1	<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
	2	/**
	3	* CodeIgniter
	4	*
	5	* An open source application development framework for PHP 5.1.6 or newer
	6	*
	7	* @package CodeIgniter
	8	* @author ExpressionEngine Dev Team
	9	* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
	10	* @license http://codeigniter.com/user_guide/license.html
	11	* @link http://codeigniter.com
	12	* @since Version 2.0
	13	* @filesource
	14	*/
	15
	16	// ------------------------------------------------------------------------
	17
	18	/**
	19	* Utf8 Class
	20	*
	21	* Provides support for UTF-8 environments
	22	*
	23	* @package CodeIgniter
	24	* @subpackage Libraries
	25	* @category UTF-8
	26	* @author ExpressionEngine Dev Team
	27	* @link http://codeigniter.com/user_guide/libraries/utf8.html
	28	*/
	29	class CI_Utf8 {
	30
	31	/**
	32	* Constructor
	33	*
	34	* Determines if UTF-8 support is to be enabled
	35	*
	36	*/
	37	function __construct()
	38	{
	39	log_message('debug', "Utf8 Class Initialized");
	40
	41	global $CFG;
	42
	43	if (
	44	preg_match('/./u', 'é') === 1 // PCRE must support UTF-8
	45	AND function_exists('iconv') // iconv must be installed
	46	AND ini_get('mbstring.func_overload') != 1 // Multibyte string function overloading cannot be enabled
	47	AND $CFG->item('charset') == 'UTF-8' // Application charset must be UTF-8
	48	)
	49	{
	50	log_message('debug', "UTF-8 Support Enabled");
	51
	52	define('UTF8_ENABLED', TRUE);
	53
	54	// set internal encoding for multibyte string functions if necessary
	55	// and set a flag so we don't have to repeatedly use extension_loaded()
	56	// or function_exists()
	57	if (extension_loaded('mbstring'))
	58	{
	59	define('MB_ENABLED', TRUE);
	60	mb_internal_encoding('UTF-8');
	61	}
	62	else
	63	{
	64	define('MB_ENABLED', FALSE);
65	}
66	}
67	else
68	{
69	log_message('debug', "UTF-8 Support Disabled");
70	define('UTF8_ENABLED', FALSE);
71	}
72	}
73
74	// --------------------------------------------------------------------
75
76	/**
77	* Clean UTF-8 strings
78	*
79	* Ensures strings are UTF-8
80	*
81	* @access public
82	* @param string
83	* @return string
84	*/
85	function clean_string($str)
86	{
87	if ($this->_is_ascii($str) === FALSE)
88	{
89	$str = @iconv('UTF-8', 'UTF-8//IGNORE', $str);
90	}
91
92	return $str;
93	}
94
95	// --------------------------------------------------------------------
96
97	/**
98	* Remove ASCII control characters
99	*
100	* Removes all ASCII control characters except horizontal tabs,
101	* line feeds, and carriage returns, as all others can cause
102	* problems in XML
103	*
104	* @access public
105	* @param string
106	* @return string
107	*/
108	function safe_ascii_for_xml($str)
109	{
110	return remove_invisible_characters($str, FALSE);
111	}
112
113	// --------------------------------------------------------------------
114
115	/**
116	* Convert to UTF-8
117	*
118	* Attempts to convert a string to UTF-8
119	*
120	* @access public
121	* @param string
122	* @param string - input encoding
123	* @return string
124	*/
125	function convert_to_utf8($str, $encoding)
126	{
127	if (function_exists('iconv'))
128	{
129	$str = @iconv($encoding, 'UTF-8', $str);
130	}
131	elseif (function_exists('mb_convert_encoding'))
132	{
133	$str = @mb_convert_encoding($str, 'UTF-8', $encoding);
134	}
135	else
136	{
137	return FALSE;
138	}
139
140	return $str;
141	}
142
143	// --------------------------------------------------------------------
144
145	/**
146	* Is ASCII?
147	*
148	* Tests if a string is standard 7-bit ASCII or not
149	*
150	* @access public
151	* @param string
152	* @return bool
153	*/
154	function _is_ascii($str)
155	{
156	return (preg_match('/[^\x00-\x7F]/S', $str) == 0);
157	}
158
159	// --------------------------------------------------------------------
160
161	}
162	// End Utf8 Class
163
164	/* End of file Utf8.php */
165	/* Location: ./system/core/Utf8.php */