url_helper.php | searchcode

/trunk/system/helpers/url_helper.php

https://github.com/holsinger/openfloor
PHP | 501 lines | 272 code | 68 blank | 161 comment | 59 complexity | 33afc9d4cc8ca55ceae84ae948823004 MD5 | raw file

<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');

/**

 * CodeIgniter

 *

 * An open source application development framework for PHP 4.3.2 or newer

 *

 * @package		CodeIgniter

 * @author		Rick Ellis

 * @copyright	Copyright (c) 2006, EllisLab, Inc.

 * @license		http://www.codeignitor.com/user_guide/license.html

 * @link		http://www.codeigniter.com

 * @since		Version 1.0

 * @filesource

 */



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



/**

 * CodeIgniter URL Helpers

 *

 * @package		CodeIgniter

 * @subpackage	Helpers

 * @category	Helpers

 * @author		Rick Ellis

 * @link		http://www.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

 */	

function site_url($uri = '')

{

	$CI =& get_instance();

	return $CI->config->site_url($uri);

}

	

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



/**

 * Base URL

 *

 * Returns the "base_url" item from your config file

 *

 * @access	public

 * @return	string

 */	

function base_url()

{

	$CI =& get_instance();

	return $CI->config->slash_item('base_url');

}

	

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



/**

 * Index page

 *

 * Returns the "index_page" from your config file

 *

 * @access	public

 * @return	string

 */	

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

 */	

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 == '')

	{

		$attributes = ' title="'.$title.'"';

	}

	else

	{

		$attributes = _parse_attributes($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

 */

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];

	}



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

}

	

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



/**

 * Mailto Link

 *

 * @access	public

 * @param	string	the email address

 * @param	string	the link title

 * @param	mixed 	any attributes

 * @return	string

 */

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

 */

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

 */

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; $i < sizeof($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; $i < sizeof($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 missing

 *

 * @access	public

 * @param	string	the URL

 * @return	string

 */

function prep_url($str = '')

{

	if ($str == 'http://' OR $str == '')

	{

		return '';

	}

	

	if (substr($str, 0, 7) != 'http://' && substr($str, 0, 8) != 'https://')

	{

		$str = 'http://'.$str;

	}

	

	return $str;

}

	

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



/**

 * Create URL Title

 *

 * Takes a "title" string as input and creates a

 * human-friendly URL string with either a dash

 * or an underscore as the word separator.

 *

 * @access	public

 * @param	string	the string

 * @param	string	the separator: dash, or underscore

 * @return	string

 */

function url_title($str, $separator = '')

{

	if ($separator == 'dash')

	{

		$search		= '_';

		$replace	= '-';

	}

	else

	{

		$search		= '-';

		$replace	= '_';

	}

		

	$trans = array(

					$search								=> $replace,

					"\s+"								=> $replace,

					"[^a-z0-9".$replace."]"				=> '',

					$replace."+"						=> $replace,

					$replace."$"						=> '',

					"^".$replace						=> ''

				   );



	$str = strip_tags(strtolower($str));

	

	foreach ($trans as $key => $val)

	{

		$str = preg_replace("#".$key."#", $val, $str);

	}

	

	return trim(stripslashes($str));

}

	

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



/**

 * Header Redirect

 *

 * Header redirect in two flavors

 *

 * @access	public

 * @param	string	the URL

 * @param	string	the method: location or redirect

 * @return	string

 */

function redirect($uri = '', $method = 'location')

{

	switch($method)

	{

		case 'refresh'	: header("Refresh:0;url=".site_url($uri));

			break;

		default			: header("Location: ".site_url($uri));

			break;

	}

	exit;

}

	

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



/**

 * Parse out the attributes

 *

 * Some of the functions use this

 *

 * @access	private

 * @param	array

 * @param	bool

 * @return	string

 */

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;

}



?>