/lenasys/trunk : contents of codeigniter/system/helpers/url

: (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 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * CodeIgniter URL Helpers
 *
 * @package		CodeIgniter
 * @subpackage	Helpers
 * @category	Helpers
 * @author		ExpressionEngine Dev Team
 * @link		http://codeigniter.com/user_guide/helpers/url_helper.html
 */

// ------------------------------------------------------------------------

/**
 * Site URL
 *
 * Create a local URL based on your basepath. Segments can be passed via the
 * first parameter either as a string or an array.
 *
 * @access	public
 * @param	string
 * @return	string
 */
if ( ! function_exists('site_url'))
{
	function site_url($uri = '')
	{
		$CI =& get_instance();
		return $CI->config->site_url($uri);
	}
}

// ------------------------------------------------------------------------

/**
 * Base URL
 * 
 * Create a local URL based on your basepath.
 * Segments can be passed in as a string or an array, same as site_url
 * or a URL to a file can be passed in, e.g. to an image file.
 *
 * @access	public
 * @param string
 * @return	string
 */
if ( ! function_exists('base_url'))
{
	function base_url($uri = '')
	{
		$CI =& get_instance();
		return $CI->config->base_url($uri);
	}
}

// ------------------------------------------------------------------------

/**
 * Current URL
 *
 * Returns the full URL (including segments) of the page where this
 * function is placed
 *
 * @access	public
 * @return	string
 */
if ( ! function_exists('current_url'))
{
	function current_url()
	{
		$CI =& get_instance();
		return $CI->config->site_url($CI->uri->uri_string());
	}
}

// ------------------------------------------------------------------------
/**
 * URL String
 *
 * Returns the URI segments.
 *
 * @access	public
 * @return	string
 */
if ( ! function_exists('uri_string'))
{
	function uri_string()
	{
		$CI =& get_instance();
		return $CI->uri->uri_string();
	}
}

// ------------------------------------------------------------------------

/**
 * Index page
 *
 * Returns the "index_page" from your config file
 *
 * @access	public
 * @return	string
 */
if ( ! function_exists('index_page'))
{
	function index_page()
	{
		$CI =& get_instance();
		return $CI->config->item('index_page');
	}
}

// ------------------------------------------------------------------------

/**
 * Anchor Link
 *
 * Creates an anchor based on the local URL.
 *
 * @access	public
 * @param	string	the URL
 * @param	string	the link title
 * @param	mixed	any attributes
 * @return	string
 */
if ( ! function_exists('anchor'))
{
	function anchor($uri = '', $title = '', $attributes = '')
	{
		$title = (string) $title;

		if ( ! is_array($uri))
		{
			$site_url = ( ! preg_match('!^\w+://! i', $uri)) ? site_url($uri) : $uri;
		}
		else
		{
			$site_url = site_url($uri);
		}

		if ($title == '')
		{
			$title = $site_url;
		}

		if ($attributes != '')
		{
			$attributes = _parse_attributes($attributes);
		}

		return '<a href="'.$site_url.'"'.$attributes.'>'.$title.'</a>';
	}
}

// ------------------------------------------------------------------------

/**
 * Anchor Link - Pop-up version
 *
 * Creates an anchor based on the local URL. The link
 * opens a new window based on the attributes specified.
 *
 * @access	public
 * @param	string	the URL
 * @param	string	the link title
 * @param	mixed	any attributes
 * @return	string
 */
if ( ! function_exists('anchor_popup'))
{
	function anchor_popup($uri = '', $title = '', $attributes = FALSE)
	{
		$title = (string) $title;

		$site_url = ( ! preg_match('!^\w+://! i', $uri)) ? site_url($uri) : $uri;

		if ($title == '')
		{
			$title = $site_url;
		}

		if ($attributes === FALSE)
		{
			return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank');\">".$title."</a>";
		}

		if ( ! is_array($attributes))
		{
			$attributes = array();
		}

		foreach (array('width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0', ) as $key => $val)
		{
			$atts[$key] = ( ! isset($attributes[$key])) ? $val : $attributes[$key];
			unset($attributes[$key]);
		}

		if ($attributes != '')
		{
			$attributes = _parse_attributes($attributes);
		}

		return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank', '"._parse_attributes($atts, TRUE)."');\"$attributes>".$title."</a>";
	}
}

// ------------------------------------------------------------------------

/**
 * Mailto Link
 *
 * @access	public
 * @param	string	the email address
 * @param	string	the link title
 * @param	mixed	any attributes
 * @return	string
 */
if ( ! function_exists('mailto'))
{
	function mailto($email, $title = '', $attributes = '')
	{
		$title = (string) $title;

		if ($title == "")
		{
			$title = $email;
		}

		$attributes = _parse_attributes($attributes);

		return '<a href="mailto:'.$email.'"'.$attributes.'>'.$title.'</a>';
	}
}

// ------------------------------------------------------------------------

/**
 * Encoded Mailto Link
 *
 * Create a spam-protected mailto link written in Javascript
 *
 * @access	public
 * @param	string	the email address
 * @param	string	the link title
 * @param	mixed	any attributes
 * @return	string
 */
if ( ! function_exists('safe_mailto'))
{
	function safe_mailto($email, $title = '', $attributes = '')
	{
		$title = (string) $title;

		if ($title == "")
		{
			$title = $email;
		}

		for ($i = 0; $i < 16; $i++)
		{
			$x[] = substr('<a href="mailto:', $i, 1);
		}

		for ($i = 0; $i < strlen($email); $i++)
		{
			$x[] = "|".ord(substr($email, $i, 1));
		}

		$x[] = '"';

		if ($attributes != '')
		{
			if (is_array($attributes))
			{
				foreach ($attributes as $key => $val)
				{
					$x[] =  ' '.$key.'="';
					for ($i = 0; $i < strlen($val); $i++)
					{
						$x[] = "|".ord(substr($val, $i, 1));
					}
					$x[] = '"';
				}
			}
			else
			{
				for ($i = 0; $i < strlen($attributes); $i++)
				{
					$x[] = substr($attributes, $i, 1);
				}
			}
		}

		$x[] = '>';

		$temp = array();
		for ($i = 0; $i < strlen($title); $i++)
		{
			$ordinal = ord($title[$i]);

			if ($ordinal < 128)
			{
				$x[] = "|".$ordinal;
			}
			else
			{
				if (count($temp) == 0)
				{
					$count = ($ordinal < 224) ? 2 : 3;
				}

				$temp[] = $ordinal;
				if (count($temp) == $count)
				{
					$number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64);
					$x[] = "|".$number;
					$count = 1;
					$temp = array();
				}
			}
		}

		$x[] = '<'; $x[] = '/'; $x[] = 'a'; $x[] = '>';

		$x = array_reverse($x);
		ob_start();

	?><script type="text/javascript">
	//<![CDATA[
	var l=new Array();
	<?php
	$i = 0;
	foreach ($x as $val){ ?>l[<?php echo $i++; ?>]='<?php echo $val; ?>';<?php } ?>

	for (var i = l.length-1; i >= 0; i=i-1){
	if (l[i].substring(0, 1) == '|') document.write("&#"+unescape(l[i].substring(1))+";");
	else document.write(unescape(l[i]));}
	//]]>
	</script><?php

		$buffer = ob_get_contents();
		ob_end_clean();
		return $buffer;
	}
}

// ------------------------------------------------------------------------

/**
 * Auto-linker
 *
 * Automatically links URL and Email addresses.
 * Note: There's a bit of extra code here to deal with
 * URLs or emails that end in a period.  We'll strip these
 * off and add them after the link.
 *
 * @access	public
 * @param	string	the string
 * @param	string	the type: email, url, or both
 * @param	bool	whether to create pop-up links
 * @return	string
 */
if ( ! function_exists('auto_link'))
{
	function auto_link($str, $type = 'both', $popup = FALSE)
	{
		if ($type != 'email')
		{
			if (preg_match_all("#(^|\s|\()((http(s?)://)|(www\.))(\w+[^\s\)\<]+)#i", $str, $matches))
			{
				$pop = ($popup == TRUE) ? " target=\"_blank\" " : "";

				for ($i = 0; $i < count($matches['0']); $i++)
				{
					$period = '';
					if (preg_match("|\.$|", $matches['6'][$i]))
					{
						$period = '.';
						$matches['6'][$i] = substr($matches['6'][$i], 0, -1);
					}

					$str = str_replace($matches['0'][$i],
										$matches['1'][$i].'<a href="http'.
										$matches['4'][$i].'://'.
										$matches['5'][$i].
										$matches['6'][$i].'"'.$pop.'>http'.
										$matches['4'][$i].'://'.
										$matches['5'][$i].
										$matches['6'][$i].'</a>'.
										$period, $str);
				}
			}
		}

		if ($type != 'url')
		{
			if (preg_match_all("/([a-zA-Z0-9_\.\-\+]+)@([a-zA-Z0-9\-]+)\.([a-zA-Z0-9\-\.]*)/i", $str, $matches))
			{
				for ($i = 0; $i < count($matches['0']); $i++)
				{
					$period = '';
					if (preg_match("|\.$|", $matches['3'][$i]))
					{
						$period = '.';
						$matches['3'][$i] = substr($matches['3'][$i], 0, -1);
					}

					$str = str_replace($matches['0'][$i], safe_mailto($matches['1'][$i].'@'.$matches['2'][$i].'.'.$matches['3'][$i]).$period, $str);
				}
			}
		}

		return $str;
	}
}

// ------------------------------------------------------------------------

/**
 * Prep URL
 *
 * Simply adds the http:// part if no scheme is included
 *
 * @access	public
 * @param	string	the URL
 * @return	string
 */
if ( ! function_exists('prep_url'))
{
	function prep_url($str = '')
	{
		if ($str == 'http://' OR $str == '')
		{
			return '';
		}

		$url = parse_url($str);

		if ( ! $url OR ! isset($url['scheme']))
		{
			$str = 'http://'.$str;
		}

		return $str;
	}
}

// ------------------------------------------------------------------------

/**
 * Create URL Title
 *
 * Takes a "title" string as input and creates a
 * human-friendly URL string with a "separator" string 
 * as the word separator.
 *
 * @access	public
 * @param	string	the string
 * @param	string	the separator
 * @return	string
 */
if ( ! function_exists('url_title'))
{
	function url_title($str, $separator = '-', $lowercase = FALSE)
	{
		if ($separator == 'dash') 
		{
		    $separator = '-';
		}
		else if ($separator == 'underscore')
		{
		    $separator = '_';
		}
		
		$q_separator = preg_quote($separator);

		$trans = array(
			'&.+?;'                 => '',
			'[^a-z0-9 _-]'          => '',
			'\s+'                   => $separator,
			'('.$q_separator.')+'   => $separator
		);

		$str = strip_tags($str);

		foreach ($trans as $key => $val)
		{
			$str = preg_replace("#".$key."#i", $val, $str);
		}

		if ($lowercase === TRUE)
		{
			$str = strtolower($str);
		}

		return trim($str, $separator);
	}
}

// ------------------------------------------------------------------------

/**
 * Header Redirect
 *
 * Header redirect in two flavors
 * For very fine grained control over headers, you could use the Output
 * Library's set_header() function.
 *
 * @access	public
 * @param	string	the URL
 * @param	string	the method: location or redirect
 * @return	string
 */
if ( ! function_exists('redirect'))
{
	function redirect($uri = '', $method = 'location', $http_response_code = 302)
	{
		if ( ! preg_match('#^https?://#i', $uri))
		{
			$uri = site_url($uri);
		}

		switch($method)
		{
			case 'refresh'	: header("Refresh:0;url=".$uri);
				break;
			default			: header("Location: ".$uri, TRUE, $http_response_code);
				break;
		}
		exit;
	}
}

// ------------------------------------------------------------------------

/**
 * Parse out the attributes
 *
 * Some of the functions use this
 *
 * @access	private
 * @param	array
 * @param	bool
 * @return	string
 */
if ( ! function_exists('_parse_attributes'))
{
	function _parse_attributes($attributes, $javascript = FALSE)
	{
		if (is_string($attributes))
		{
			return ($attributes != '') ? ' '.$attributes : '';
		}

		$att = '';
		foreach ($attributes as $key => $val)
		{
			if ($javascript == TRUE)
			{
				$att .= $key . '=' . $val . ',';
			}
			else
			{
				$att .= ' ' . $key . '="' . $val . '"';
			}
		}

		if ($javascript == TRUE AND $att != '')
		{
			$att = substr($att, 0, -1);
		}

		return $att;
	}
}


/* End of file url_helper.php */
/* Location: ./system/helpers/url_helper.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 1.0
	13	* @filesource
	14	*/
	15
	16	// ------------------------------------------------------------------------
	17
	18	/**
	19	* CodeIgniter URL Helpers
	20	*
	21	* @package CodeIgniter
	22	* @subpackage Helpers
	23	* @category Helpers
	24	* @author ExpressionEngine Dev Team
	25	* @link http://codeigniter.com/user_guide/helpers/url_helper.html
	26	*/
	27
	28	// ------------------------------------------------------------------------
	29
	30	/**
	31	* Site URL
	32	*
	33	* Create a local URL based on your basepath. Segments can be passed via the
	34	* first parameter either as a string or an array.
	35	*
	36	* @access public
	37	* @param string
	38	* @return string
	39	*/
	40	if ( ! function_exists('site_url'))
	41	{
	42	function site_url($uri = '')
	43	{
	44	$CI =& get_instance();
	45	return $CI->config->site_url($uri);
	46	}
	47	}
	48
	49	// ------------------------------------------------------------------------
	50
	51	/**
	52	* Base URL
	53	*
	54	* Create a local URL based on your basepath.
	55	* Segments can be passed in as a string or an array, same as site_url
	56	* or a URL to a file can be passed in, e.g. to an image file.
	57	*
	58	* @access public
	59	* @param string
	60	* @return string
	61	*/
	62	if ( ! function_exists('base_url'))
	63	{
	64	function base_url($uri = '')
65	{
66	$CI =& get_instance();
67	return $CI->config->base_url($uri);
68	}
69	}
70
71	// ------------------------------------------------------------------------
72
73	/**
74	* Current URL
75	*
76	* Returns the full URL (including segments) of the page where this
77	* function is placed
78	*
79	* @access public
80	* @return string
81	*/
82	if ( ! function_exists('current_url'))
83	{
84	function current_url()
85	{
86	$CI =& get_instance();
87	return $CI->config->site_url($CI->uri->uri_string());
88	}
89	}
90
91	// ------------------------------------------------------------------------
92	/**
93	* URL String
94	*
95	* Returns the URI segments.
96	*
97	* @access public
98	* @return string
99	*/
100	if ( ! function_exists('uri_string'))
101	{
102	function uri_string()
103	{
104	$CI =& get_instance();
105	return $CI->uri->uri_string();
106	}
107	}
108
109	// ------------------------------------------------------------------------
110
111	/**
112	* Index page
113	*
114	* Returns the "index_page" from your config file
115	*
116	* @access public
117	* @return string
118	*/
119	if ( ! function_exists('index_page'))
120	{
121	function index_page()
122	{
123	$CI =& get_instance();
124	return $CI->config->item('index_page');
125	}
126	}
127
128	// ------------------------------------------------------------------------
129
130	/**
131	* Anchor Link
132	*
133	* Creates an anchor based on the local URL.
134	*
135	* @access public
136	* @param string the URL
137	* @param string the link title
138	* @param mixed any attributes
139	* @return string
140	*/
141	if ( ! function_exists('anchor'))
142	{
143	function anchor($uri = '', $title = '', $attributes = '')
144	{
145	$title = (string) $title;
146
147	if ( ! is_array($uri))
148	{
149	$site_url = ( ! preg_match('!^\w+://! i', $uri)) ? site_url($uri) : $uri;
150	}
151	else
152	{
153	$site_url = site_url($uri);
154	}
155
156	if ($title == '')
157	{
158	$title = $site_url;
159	}
160
161	if ($attributes != '')
162	{
163	$attributes = _parse_attributes($attributes);
164	}
165
166	return '<a href="'.$site_url.'"'.$attributes.'>'.$title.'</a>';
167	}
168	}
169
170	// ------------------------------------------------------------------------
171
172	/**
173	* Anchor Link - Pop-up version
174	*
175	* Creates an anchor based on the local URL. The link
176	* opens a new window based on the attributes specified.
177	*
178	* @access public
179	* @param string the URL
180	* @param string the link title
181	* @param mixed any attributes
182	* @return string
183	*/
184	if ( ! function_exists('anchor_popup'))
185	{
186	function anchor_popup($uri = '', $title = '', $attributes = FALSE)
187	{
188	$title = (string) $title;
189
190	$site_url = ( ! preg_match('!^\w+://! i', $uri)) ? site_url($uri) : $uri;
191
192	if ($title == '')
193	{
194	$title = $site_url;
195	}
196
197	if ($attributes === FALSE)
198	{
199	return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank');\">".$title."</a>";
200	}
201
202	if ( ! is_array($attributes))
203	{
204	$attributes = array();
205	}
206
207	foreach (array('width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0', ) as $key => $val)
208	{
209	$atts[$key] = ( ! isset($attributes[$key])) ? $val : $attributes[$key];
210	unset($attributes[$key]);
211	}
212
213	if ($attributes != '')
214	{
215	$attributes = _parse_attributes($attributes);
216	}
217
218	return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank', '"._parse_attributes($atts, TRUE)."');\"$attributes>".$title."</a>";
219	}
220	}
221
222	// ------------------------------------------------------------------------
223
224	/**
225	* Mailto Link
226	*
227	* @access public
228	* @param string the email address
229	* @param string the link title
230	* @param mixed any attributes
231	* @return string
232	*/
233	if ( ! function_exists('mailto'))
234	{
235	function mailto($email, $title = '', $attributes = '')
236	{
237	$title = (string) $title;
238
239	if ($title == "")
240	{
241	$title = $email;
242	}
243
244	$attributes = _parse_attributes($attributes);
245
246	return '<a href="mailto:'.$email.'"'.$attributes.'>'.$title.'</a>';
247	}
248	}
249
250	// ------------------------------------------------------------------------
251
252	/**
253	* Encoded Mailto Link
254	*
255	* Create a spam-protected mailto link written in Javascript
256	*
257	* @access public
258	* @param string the email address
259	* @param string the link title
260	* @param mixed any attributes
261	* @return string
262	*/
263	if ( ! function_exists('safe_mailto'))
264	{
265	function safe_mailto($email, $title = '', $attributes = '')
266	{
267	$title = (string) $title;
268
269	if ($title == "")
270	{
271	$title = $email;
272	}
273
274	for ($i = 0; $i < 16; $i++)
275	{
276	$x[] = substr('<a href="mailto:', $i, 1);
277	}
278
279	for ($i = 0; $i < strlen($email); $i++)
280	{
281	$x[] = "\|".ord(substr($email, $i, 1));
282	}
283
284	$x[] = '"';
285
286	if ($attributes != '')
287	{
288	if (is_array($attributes))
289	{
290	foreach ($attributes as $key => $val)
291	{
292	$x[] = ' '.$key.'="';
293	for ($i = 0; $i < strlen($val); $i++)
294	{
295	$x[] = "\|".ord(substr($val, $i, 1));
296	}
297	$x[] = '"';
298	}
299	}
300	else
301	{
302	for ($i = 0; $i < strlen($attributes); $i++)
303	{
304	$x[] = substr($attributes, $i, 1);
305	}
306	}
307	}
308
309	$x[] = '>';
310
311	$temp = array();
312	for ($i = 0; $i < strlen($title); $i++)
313	{
314	$ordinal = ord($title[$i]);
315
316	if ($ordinal < 128)
317	{
318	$x[] = "\|".$ordinal;
319	}
320	else
321	{
322	if (count($temp) == 0)
323	{
324	$count = ($ordinal < 224) ? 2 : 3;
325	}
326
327	$temp[] = $ordinal;
328	if (count($temp) == $count)
329	{
330	$number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64);
331	$x[] = "\|".$number;
332	$count = 1;
333	$temp = array();
334	}
335	}
336	}
337
338	$x[] = '<'; $x[] = '/'; $x[] = 'a'; $x[] = '>';
339
340	$x = array_reverse($x);
341	ob_start();
342
343	?><script type="text/javascript">
344	//<![CDATA[
345	var l=new Array();
346	<?php
347	$i = 0;
348	foreach ($x as $val){ ?>l[<?php echo $i++; ?>]='<?php echo $val; ?>';<?php } ?>
349
350	for (var i = l.length-1; i >= 0; i=i-1){
351	if (l[i].substring(0, 1) == '\|') document.write("&#"+unescape(l[i].substring(1))+";");
352	else document.write(unescape(l[i]));}
353	//]]>
354	</script><?php
355
356	$buffer = ob_get_contents();
357	ob_end_clean();
358	return $buffer;
359	}
360	}
361
362	// ------------------------------------------------------------------------
363
364	/**
365	* Auto-linker
366	*
367	* Automatically links URL and Email addresses.
368	* Note: There's a bit of extra code here to deal with
369	* URLs or emails that end in a period. We'll strip these
370	* off and add them after the link.
371	*
372	* @access public
373	* @param string the string
374	* @param string the type: email, url, or both
375	* @param bool whether to create pop-up links
376	* @return string
377	*/
378	if ( ! function_exists('auto_link'))
379	{
380	function auto_link($str, $type = 'both', $popup = FALSE)
381	{
382	if ($type != 'email')
383	{
384	if (preg_match_all("#(^\|\s\|\()((http(s?)://)\|(www\.))(\w+[^\s\)\<]+)#i", $str, $matches))
385	{
386	$pop = ($popup == TRUE) ? " target=\"_blank\" " : "";
387
388	for ($i = 0; $i < count($matches['0']); $i++)
389	{
390	$period = '';
391	if (preg_match("\|\.$\|", $matches['6'][$i]))
392	{
393	$period = '.';
394	$matches['6'][$i] = substr($matches['6'][$i], 0, -1);
395	}
396
397	$str = str_replace($matches['0'][$i],
398	$matches['1'][$i].'<a href="http'.
399	$matches['4'][$i].'://'.
400	$matches['5'][$i].
401	$matches['6'][$i].'"'.$pop.'>http'.
402	$matches['4'][$i].'://'.
403	$matches['5'][$i].
404	$matches['6'][$i].'</a>'.
405	$period, $str);
406	}
407	}
408	}
409
410	if ($type != 'url')
411	{
412	if (preg_match_all("/([a-zA-Z0-9_\.\-\+]+)@([a-zA-Z0-9\-]+)\.([a-zA-Z0-9\-\.]*)/i", $str, $matches))
413	{
414	for ($i = 0; $i < count($matches['0']); $i++)
415	{
416	$period = '';
417	if (preg_match("\|\.$\|", $matches['3'][$i]))
418	{
419	$period = '.';
420	$matches['3'][$i] = substr($matches['3'][$i], 0, -1);
421	}
422
423	$str = str_replace($matches['0'][$i], safe_mailto($matches['1'][$i].'@'.$matches['2'][$i].'.'.$matches['3'][$i]).$period, $str);
424	}
425	}
426	}
427
428	return $str;
429	}
430	}
431
432	// ------------------------------------------------------------------------
433
434	/**
435	* Prep URL
436	*
437	* Simply adds the http:// part if no scheme is included
438	*
439	* @access public
440	* @param string the URL
441	* @return string
442	*/
443	if ( ! function_exists('prep_url'))
444	{
445	function prep_url($str = '')
446	{
447	if ($str == 'http://' OR $str == '')
448	{
449	return '';
450	}
451
452	$url = parse_url($str);
453
454	if ( ! $url OR ! isset($url['scheme']))
455	{
456	$str = 'http://'.$str;
457	}
458
459	return $str;
460	}
461	}
462
463	// ------------------------------------------------------------------------
464
465	/**
466	* Create URL Title
467	*
468	* Takes a "title" string as input and creates a
469	* human-friendly URL string with a "separator" string
470	* as the word separator.
471	*
472	* @access public
473	* @param string the string
474	* @param string the separator
475	* @return string
476	*/
477	if ( ! function_exists('url_title'))
478	{
479	function url_title($str, $separator = '-', $lowercase = FALSE)
480	{
481	if ($separator == 'dash')
482	{
483	$separator = '-';
484	}
485	else if ($separator == 'underscore')
486	{
487	$separator = '_';
488	}
489
490	$q_separator = preg_quote($separator);
491
492	$trans = array(
493	'&.+?;' => '',
494	'[^a-z0-9 _-]' => '',
495	'\s+' => $separator,
496	'('.$q_separator.')+' => $separator
497	);
498
499	$str = strip_tags($str);
500
501	foreach ($trans as $key => $val)
502	{
503	$str = preg_replace("#".$key."#i", $val, $str);
504	}
505
506	if ($lowercase === TRUE)
507	{
508	$str = strtolower($str);
509	}
510
511	return trim($str, $separator);
512	}
513	}
514
515	// ------------------------------------------------------------------------
516
517	/**
518	* Header Redirect
519	*
520	* Header redirect in two flavors
521	* For very fine grained control over headers, you could use the Output
522	* Library's set_header() function.
523	*
524	* @access public
525	* @param string the URL
526	* @param string the method: location or redirect
527	* @return string
528	*/
529	if ( ! function_exists('redirect'))
530	{
531	function redirect($uri = '', $method = 'location', $http_response_code = 302)
532	{
533	if ( ! preg_match('#^https?://#i', $uri))
534	{
535	$uri = site_url($uri);
536	}
537
538	switch($method)
539	{
540	case 'refresh' : header("Refresh:0;url=".$uri);
541	break;
542	default : header("Location: ".$uri, TRUE, $http_response_code);
543	break;
544	}
545	exit;
546	}
547	}
548
549	// ------------------------------------------------------------------------
550
551	/**
552	* Parse out the attributes
553	*
554	* Some of the functions use this
555	*
556	* @access private
557	* @param array
558	* @param bool
559	* @return string
560	*/
561	if ( ! function_exists('_parse_attributes'))
562	{
563	function _parse_attributes($attributes, $javascript = FALSE)
564	{
565	if (is_string($attributes))
566	{
567	return ($attributes != '') ? ' '.$attributes : '';
568	}
569
570	$att = '';
571	foreach ($attributes as $key => $val)
572	{
573	if ($javascript == TRUE)
574	{
575	$att .= $key . '=' . $val . ',';
576	}
577	else
578	{
579	$att .= ' ' . $key . '="' . $val . '"';
580	}
581	}
582
583	if ($javascript == TRUE AND $att != '')
584	{
585	$att = substr($att, 0, -1);
586	}
587
588	return $att;
589	}
590	}
591
592
593	/* End of file url_helper.php */
594	/* Location: ./system/helpers/url_helper.php */