update pMachine to EllisLab

update copyright year
update Code Igniter to CodeIgniter

1 files changed, 547 insertions, 547 deletions

diff --git a/system/libraries/Trackback.php b/system/libraries/Trackback.php
index 6d5e206ff..7c13a5034 100644
--- a/system/libraries/Trackback.php
+++ b/system/libraries/Trackback.php
@@ -1,548 +1,548 @@
-<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * Code Igniter
- *
- * An open source application development framework for PHP 4.3.2 or newer
- *
- * @package		CodeIgniter
- * @author		Rick Ellis
- * @copyright	Copyright (c) 2006, pMachine, Inc.
- * @license		http://www.codeignitor.com/user_guide/license.html
- * @link		http://www.codeigniter.com
- * @since		Version 1.0
- * @filesource
- */
-
-// ------------------------------------------------------------------------
-
-/**
- * Trackback Class
- *
- * Trackback Sending/Receiving Class
- *
- * @package		CodeIgniter
- * @subpackage	Libraries
- * @category	Trackbacks
- * @author		Paul Burdick
- * @link		http://www.codeigniter.com/user_guide/libraries/trackback.html
- */
-class CI_Trackback {
-		
-	var $time_format	= 'local';
-	var $charset		= 'UTF-8';
-	var $data			= array('url' => '', 'title' => '', 'excerpt' => '', 'blog_name' => '', 'charset' => '');
-	var $convert_ascii	= TRUE;
-	var $response		= '';
-	var $error_msg		= array();
-
-	/**
-	 * Constructor
-	 *
-	 * @access	public
-	 */
-	function CI_Trackback()
-	{
-		log_message('debug', "Trackback Class Initialized");
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Send Trackback
-	 *
-	 * @access	public
-	 * @param	array
-	 * @return	bool
-	 */	
-	function send($tb_data)
-	{		
-		if ( ! is_array($tb_data))
-		{
-			$this->set_error('The send() method must be passed an array');
-			return FALSE;
-		}
-		
-		// Pre-process the Trackback Data
-		foreach (array('url', 'title', 'excerpt', 'blog_name', 'ping_url') as $item)
-		{
-			if ( ! isset($tb_data[$item]))
-			{
-				$this->set_error('Required item missing: '.$item);
-				return FALSE;
-			}
-			
-			switch ($item)
-			{
-				case 'ping_url'	: $$item = $this->extract_urls($tb_data[$item]);
-					break;
-				case 'excerpt'	: $$item = $this->limit_characters($this->convert_xml(strip_tags(stripslashes($tb_data[$item]))));
-					break;
-				case 'url'	 	: $$item = str_replace('&#45;', '-', $this->convert_xml(strip_tags(stripslashes($tb_data[$item]))));
-					break;
-				default			: $$item = $this->convert_xml(strip_tags(stripslashes($tb_data[$item])));
-					break;
-			}
-
-			// Convert High ASCII Characters
-			if ($this->convert_ascii == TRUE)
-			{
-				if ($item == 'excerpt')
-				{
-					$$item = $this->convert_ascii($$item);
-				}
-				elseif ($item == 'title')
-				{
-					$$item = $this->convert_ascii($$item);
-				}
-				elseif($item == 'blog_name')
-				{
-					$$item = $this->convert_ascii($$item);
-				}
-			}
-		}
-
-		// Build the Trackback data string
-		$charset = ( ! isset($tb_data['charset'])) ? $this->charset : $tb_data['charset'];
-		
-		$data = "url=".rawurlencode($url)."&title=".rawurlencode($title)."&blog_name=".rawurlencode($blog_name)."&excerpt=".rawurlencode($excerpt)."&charset=".rawurlencode($charset);
-				
-		// Send Trackback(s)
-		$return = TRUE;
-		if (count($ping_url) > 0)
-		{
-			foreach ($ping_url as $url)
-			{
-				if ($this->process($url, $data) == FALSE)
-				{
-					$return = FALSE;
-				}
-			}	
-		}
-
-		return $return;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Receive Trackback  Data
-	 *
-	 * This function simply validates the incoming TB data.
-	 * It returns false on failure and true on success.
-	 * If the data is valid it is set to the $this->data array
-	 * so that it can be inserted into a database.
-	 *
-	 * @access	public
-	 * @return	bool
-	 */	
-	function receive()
-	{  					
-		foreach (array('url', 'title', 'blog_name', 'excerpt') as $val)
-		{
-			if ( ! isset($_POST[$val]) OR $_POST[$val] == '')
-			{
-				$this->set_error('The following required POST variable is missing: '.$val);
-				return FALSE;
-			}
-			
-			$this->data['charset'] = ( ! isset($_POST['charset'])) ? 'auto' : strtoupper(trim($_POST['charset']));
-	
-			if ($val != 'url' && function_exists('mb_convert_encoding'))
-			{
-				$_POST[$val] = mb_convert_encoding($_POST[$val], $this->charset, $this->data['charset']);
-			}
-			
-			$_POST[$val] = ($val != 'url') ? $this->convert_xml(strip_tags($_POST[$val])) : strip_tags($_POST[$val]);
-			
-			if ($val == 'excerpt')
-			{
-				$_POST['excerpt'] = $this->limit_characters($_POST['excerpt']);
-			}
-			
-			$this->data[$val] = $_POST[$val];
-		}
-
-		return TRUE;
-	}	
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Send Trackback Error Message
-	 *
-	 * Allows custom errors to be set.  By default it
-	 * sends the "incomplete information" error, as that's
-	 * the most common one.
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	void
-	 */	
-	function send_error($message = 'Incomplete Information')
-	{
-		echo "<?xml version=\"1.0\" encoding=\"utf-8\"?".">\n<response>\n<error>1</error>\n<message>".$message."</message>\n</response>";
-		exit;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Send Trackback Success Message
-	 *
-	 * This should be called when a trackback has been
-	 * successfully received and inserted.
-	 *
-	 * @access	public
-	 * @return	void
-	 */		
-	function send_success()
-	{
-		echo "<?xml version=\"1.0\" encoding=\"utf-8\"?".">\n<response>\n<error>0</error>\n</response>";
-		exit;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Fetch a particular item
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	string
-	 */	
-	function data($item)
-	{
-		return ( ! isset($this->data[$item])) ? '' : $this->data[$item];
-	}
-
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Process Trackback
-	 *
-	 * Opens a socket connection and passes the data to
-	 * the server.  Returns true on success, false on failure
-	 *
-	 * @access	public
-	 * @param	string
-	 * @param	string
-	 * @return	bool
-	 */	
-	function process($url, $data)
-	{
-		$target = parse_url($url);
-	
-		// Open the socket
-		if ( ! $fp = @fsockopen($target['host'], 80))
-		{
-			$this->set_error('Invalid Connection: '.$url);
-			return FALSE;
-		}
-
-		// Build the path
-		$ppath = ( ! isset($target['path'])) ? $url : $target['path'];
-		
-		$path = (isset($target['query']) && $target['query'] != "") ? $ppath.'?'.$target['query'] : $ppath;
-
-		// Add the Trackback ID to the data string
-		if ($id = $this->get_id($url))
-		{
-			$data = "tb_id=".$id."&".$data;
-		}
-
-		// Transfer the data
-		fputs ($fp, "POST " . $path . " HTTP/1.0\r\n" );
-		fputs ($fp, "Host: " . $target['host'] . "\r\n" );
-		fputs ($fp, "Content-type: application/x-www-form-urlencoded\r\n" );
-		fputs ($fp, "Content-length: " . strlen($data) . "\r\n" );
-		fputs ($fp, "Connection: close\r\n\r\n" );
-		fputs ($fp, $data);
-
-		// Was it successful?
-		$this->response = "";
-		
-		while(!feof($fp))
-		{
-			$this->response .= fgets($fp, 128);
-		}
-		@fclose($fp);
-		
-		if ( ! eregi("<error>0</error>", $this->response))
-		{
-			$message = 'An unknown error was encountered';
-			
-			if (preg_match("/<message>(.*?)<\/message>/is", $this->response, $match))
-			{
-				$message = trim($match['1']);
-			}
-			
-			$this->set_error($message);
-			return FALSE;
-		}
-
-		return TRUE;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Extract Trackback URLs
-	 *
-	 * This function lets multiple trackbacks be sent.
-	 * It takes a string of URLs (separated by comma or
-	 * space) and puts each URL into an array
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	string
-	 */	
-	function extract_urls($urls)
-	{		
-		// Remove the pesky white space and replace with a comma.
-		$urls = preg_replace("/\s*(\S+)\s*/", "\\1,", $urls);
-		
-		// If they use commas get rid of the doubles.
-		$urls = str_replace(",,", ",", $urls);
-		
-		// Remove any comma that might be at the end
-		if (substr($urls, -1) == ",")
-		{
-			$urls = substr($urls, 0, -1);
-		}
-				
-		// Break into an array via commas
-		$urls = preg_split('/[,]/', $urls);
-		
-		// Removes duplicates
-		$urls = array_unique($urls);
-		
-		array_walk($urls, array($this, 'validate_url'));
-		
-		return $urls;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Validate URL
-	 *
-	 * Simply adds "http://" if missing
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	string
-	 */	
-	function validate_url($url)
-	{
-		$url = trim($url);
-
-		if (substr($url, 0, 4) != "http")
-		{
-			$url = "http://".$url;
-		}
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Find the Trackback URL's ID
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	string
-	 */	
-	function get_id($url)
-	{	
-		$tb_id = "";
-		
-		if (strstr($url, '?'))
-		{
-			$tb_array = explode('/', $url);
-			$tb_end   = $tb_array[count($tb_array)-1];
-			
-			if ( ! is_numeric($tb_end))
-			{
-				$tb_end  = $tb_array[count($tb_array)-2];
-			}
-			
-			$tb_array = explode('=', $tb_end);
-			$tb_id	= $tb_array[count($tb_array)-1];
-		}
-		else
-		{
-			if (ereg("/$", $url))
-			{
-				$url = substr($url, 0, -1);
-			}
-				
-			$tb_array = explode('/', $url);
-			$tb_id	= $tb_array[count($tb_array)-1];
-			
-			if ( ! is_numeric($tb_id))
-			{
-				$tb_id  = $tb_array[count($tb_array)-2];
-			}
-		}	
-				
-		if ( ! preg_match ("/^([0-9]+)$/", $tb_id))
-		{
-			return false;
-		}
-		else
-		{
-			return $tb_id;
-		}		
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Convert Reserved XML characters to Entities
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	string
-	 */
-	function convert_xml($str)
-	{
-		$temp = '__TEMP_AMPERSANDS__';
-		
-		$str = preg_replace("/&#(\d+);/", "$temp\\1;", $str);
-		$str = preg_replace("/&(\w+);/",  "$temp\\1;", $str);
-		
-		$str = str_replace(array("&","<",">","\"", "'", "-"),
-						   array("&amp;", "&lt;", "&gt;", "&quot;", "&#39;", "&#45;"),
-						   $str);
-			
-		$str = preg_replace("/$temp(\d+);/","&#\\1;",$str);
-		$str = preg_replace("/$temp(\w+);/","&\\1;", $str);
-			
-		return $str;
-	}	
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Character limiter
-	 *
-	 * Limits the string based on the character count. Will preserve complete words.
-	 *
-	 * @access	public
-	 * @param	string
-	 * @param	integer
-	 * @param	string
-	 * @return	string
-	 */
-	function limit_characters($str, $n = 500, $end_char = '&#8230;')
-	{
-		if (strlen($str) < $n)
-		{
-			return $str;
-		}
-			
-		$str = preg_replace("/\s+/", ' ', preg_replace("/(\r\n|\r|\n)/", " ", $str));
-	
-		if (strlen($str) <= $n)
-		{
-			return $str;
-		}
-										
-		$out = "";
-		foreach (explode(' ', trim($str)) as $val)
-		{
-			$out .= $val.' ';			
-			if (strlen($out) >= $n)
-			{
-				return trim($out).$end_char;
-			}		
-		}
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * High ASCII to Entities
-	 *
-	 * Converts Hight ascii text and MS Word special chars
-	 * to character entities
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	string
-	 */
-	function convert_ascii($str)
-	{
-	   $count	= 1;
-	   $out	= '';
-	   $temp	= array();
-		
-	   for ($i = 0, $s = strlen($str); $i < $s; $i++)
-	   {
-		   $ordinal = ord($str[$i]);
-		
-		   if ($ordinal < 128)
-		   {
-			   $out .= $str[$i];			
-		   }
-		   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);
-	
-				   $out .= '&#'.$number.';';
-				   $count = 1;
-				   $temp = array();
-			   }
-		   }
-	   }
-	
-	   return $out;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Set error message
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	void
-	 */	
-	function set_error($msg)
-	{
-		log_message('error', $msg);
-		$this->error_msg[] = $msg;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Show error messages
-	 *
-	 * @access	public
-	 * @param	string
-	 * @param	string
-	 * @return	string
-	 */	
-	function display_errors($open = '<p>', $close = '</p>')
-	{	
-		$str = '';
-		foreach ($this->error_msg as $val)
-		{
-			$str .= $open.$val.$close;
-		}
-	
-		return $str;
-	}
-
-}
-// END Trackback Class
+<?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

+ */

+

+// ------------------------------------------------------------------------

+

+/**

+ * Trackback Class

+ *

+ * Trackback Sending/Receiving Class

+ *

+ * @package		CodeIgniter

+ * @subpackage	Libraries

+ * @category	Trackbacks

+ * @author		Paul Burdick

+ * @link		http://www.codeigniter.com/user_guide/libraries/trackback.html

+ */

+class CI_Trackback {

+		

+	var $time_format	= 'local';

+	var $charset		= 'UTF-8';

+	var $data			= array('url' => '', 'title' => '', 'excerpt' => '', 'blog_name' => '', 'charset' => '');

+	var $convert_ascii	= TRUE;

+	var $response		= '';

+	var $error_msg		= array();

+

+	/**

+	 * Constructor

+	 *

+	 * @access	public

+	 */

+	function CI_Trackback()

+	{

+		log_message('debug', "Trackback Class Initialized");

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Send Trackback

+	 *

+	 * @access	public

+	 * @param	array

+	 * @return	bool

+	 */	

+	function send($tb_data)

+	{		

+		if ( ! is_array($tb_data))

+		{

+			$this->set_error('The send() method must be passed an array');

+			return FALSE;

+		}

+		

+		// Pre-process the Trackback Data

+		foreach (array('url', 'title', 'excerpt', 'blog_name', 'ping_url') as $item)

+		{

+			if ( ! isset($tb_data[$item]))

+			{

+				$this->set_error('Required item missing: '.$item);

+				return FALSE;

+			}

+			

+			switch ($item)

+			{

+				case 'ping_url'	: $$item = $this->extract_urls($tb_data[$item]);

+					break;

+				case 'excerpt'	: $$item = $this->limit_characters($this->convert_xml(strip_tags(stripslashes($tb_data[$item]))));

+					break;

+				case 'url'	 	: $$item = str_replace('&#45;', '-', $this->convert_xml(strip_tags(stripslashes($tb_data[$item]))));

+					break;

+				default			: $$item = $this->convert_xml(strip_tags(stripslashes($tb_data[$item])));

+					break;

+			}

+

+			// Convert High ASCII Characters

+			if ($this->convert_ascii == TRUE)

+			{

+				if ($item == 'excerpt')

+				{

+					$$item = $this->convert_ascii($$item);

+				}

+				elseif ($item == 'title')

+				{

+					$$item = $this->convert_ascii($$item);

+				}

+				elseif($item == 'blog_name')

+				{

+					$$item = $this->convert_ascii($$item);

+				}

+			}

+		}

+

+		// Build the Trackback data string

+		$charset = ( ! isset($tb_data['charset'])) ? $this->charset : $tb_data['charset'];

+		

+		$data = "url=".rawurlencode($url)."&title=".rawurlencode($title)."&blog_name=".rawurlencode($blog_name)."&excerpt=".rawurlencode($excerpt)."&charset=".rawurlencode($charset);

+				

+		// Send Trackback(s)

+		$return = TRUE;

+		if (count($ping_url) > 0)

+		{

+			foreach ($ping_url as $url)

+			{

+				if ($this->process($url, $data) == FALSE)

+				{

+					$return = FALSE;

+				}

+			}	

+		}

+

+		return $return;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Receive Trackback  Data

+	 *

+	 * This function simply validates the incoming TB data.

+	 * It returns false on failure and true on success.

+	 * If the data is valid it is set to the $this->data array

+	 * so that it can be inserted into a database.

+	 *

+	 * @access	public

+	 * @return	bool

+	 */	

+	function receive()

+	{  					

+		foreach (array('url', 'title', 'blog_name', 'excerpt') as $val)

+		{

+			if ( ! isset($_POST[$val]) OR $_POST[$val] == '')

+			{

+				$this->set_error('The following required POST variable is missing: '.$val);

+				return FALSE;

+			}

+			

+			$this->data['charset'] = ( ! isset($_POST['charset'])) ? 'auto' : strtoupper(trim($_POST['charset']));

+	

+			if ($val != 'url' && function_exists('mb_convert_encoding'))

+			{

+				$_POST[$val] = mb_convert_encoding($_POST[$val], $this->charset, $this->data['charset']);

+			}

+			

+			$_POST[$val] = ($val != 'url') ? $this->convert_xml(strip_tags($_POST[$val])) : strip_tags($_POST[$val]);

+			

+			if ($val == 'excerpt')

+			{

+				$_POST['excerpt'] = $this->limit_characters($_POST['excerpt']);

+			}

+			

+			$this->data[$val] = $_POST[$val];

+		}

+

+		return TRUE;

+	}	

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Send Trackback Error Message

+	 *

+	 * Allows custom errors to be set.  By default it

+	 * sends the "incomplete information" error, as that's

+	 * the most common one.

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	void

+	 */	

+	function send_error($message = 'Incomplete Information')

+	{

+		echo "<?xml version=\"1.0\" encoding=\"utf-8\"?".">\n<response>\n<error>1</error>\n<message>".$message."</message>\n</response>";

+		exit;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Send Trackback Success Message

+	 *

+	 * This should be called when a trackback has been

+	 * successfully received and inserted.

+	 *

+	 * @access	public

+	 * @return	void

+	 */		

+	function send_success()

+	{

+		echo "<?xml version=\"1.0\" encoding=\"utf-8\"?".">\n<response>\n<error>0</error>\n</response>";

+		exit;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Fetch a particular item

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	string

+	 */	

+	function data($item)

+	{

+		return ( ! isset($this->data[$item])) ? '' : $this->data[$item];

+	}

+

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Process Trackback

+	 *

+	 * Opens a socket connection and passes the data to

+	 * the server.  Returns true on success, false on failure

+	 *

+	 * @access	public

+	 * @param	string

+	 * @param	string

+	 * @return	bool

+	 */	

+	function process($url, $data)

+	{

+		$target = parse_url($url);

+	

+		// Open the socket

+		if ( ! $fp = @fsockopen($target['host'], 80))

+		{

+			$this->set_error('Invalid Connection: '.$url);

+			return FALSE;

+		}

+

+		// Build the path

+		$ppath = ( ! isset($target['path'])) ? $url : $target['path'];

+		

+		$path = (isset($target['query']) && $target['query'] != "") ? $ppath.'?'.$target['query'] : $ppath;

+

+		// Add the Trackback ID to the data string

+		if ($id = $this->get_id($url))

+		{

+			$data = "tb_id=".$id."&".$data;

+		}

+

+		// Transfer the data

+		fputs ($fp, "POST " . $path . " HTTP/1.0\r\n" );

+		fputs ($fp, "Host: " . $target['host'] . "\r\n" );

+		fputs ($fp, "Content-type: application/x-www-form-urlencoded\r\n" );

+		fputs ($fp, "Content-length: " . strlen($data) . "\r\n" );

+		fputs ($fp, "Connection: close\r\n\r\n" );

+		fputs ($fp, $data);

+

+		// Was it successful?

+		$this->response = "";

+		

+		while(!feof($fp))

+		{

+			$this->response .= fgets($fp, 128);

+		}

+		@fclose($fp);

+		

+		if ( ! eregi("<error>0</error>", $this->response))

+		{

+			$message = 'An unknown error was encountered';

+			

+			if (preg_match("/<message>(.*?)<\/message>/is", $this->response, $match))

+			{

+				$message = trim($match['1']);

+			}

+			

+			$this->set_error($message);

+			return FALSE;

+		}

+

+		return TRUE;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Extract Trackback URLs

+	 *

+	 * This function lets multiple trackbacks be sent.

+	 * It takes a string of URLs (separated by comma or

+	 * space) and puts each URL into an array

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	string

+	 */	

+	function extract_urls($urls)

+	{		

+		// Remove the pesky white space and replace with a comma.

+		$urls = preg_replace("/\s*(\S+)\s*/", "\\1,", $urls);

+		

+		// If they use commas get rid of the doubles.

+		$urls = str_replace(",,", ",", $urls);

+		

+		// Remove any comma that might be at the end

+		if (substr($urls, -1) == ",")

+		{

+			$urls = substr($urls, 0, -1);

+		}

+				

+		// Break into an array via commas

+		$urls = preg_split('/[,]/', $urls);

+		

+		// Removes duplicates

+		$urls = array_unique($urls);

+		

+		array_walk($urls, array($this, 'validate_url'));

+		

+		return $urls;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Validate URL

+	 *

+	 * Simply adds "http://" if missing

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	string

+	 */	

+	function validate_url($url)

+	{

+		$url = trim($url);

+

+		if (substr($url, 0, 4) != "http")

+		{

+			$url = "http://".$url;

+		}

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Find the Trackback URL's ID

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	string

+	 */	

+	function get_id($url)

+	{	

+		$tb_id = "";

+		

+		if (strstr($url, '?'))

+		{

+			$tb_array = explode('/', $url);

+			$tb_end   = $tb_array[count($tb_array)-1];

+			

+			if ( ! is_numeric($tb_end))

+			{

+				$tb_end  = $tb_array[count($tb_array)-2];

+			}

+			

+			$tb_array = explode('=', $tb_end);

+			$tb_id	= $tb_array[count($tb_array)-1];

+		}

+		else

+		{

+			if (ereg("/$", $url))

+			{

+				$url = substr($url, 0, -1);

+			}

+				

+			$tb_array = explode('/', $url);

+			$tb_id	= $tb_array[count($tb_array)-1];

+			

+			if ( ! is_numeric($tb_id))

+			{

+				$tb_id  = $tb_array[count($tb_array)-2];

+			}

+		}	

+				

+		if ( ! preg_match ("/^([0-9]+)$/", $tb_id))

+		{

+			return false;

+		}

+		else

+		{

+			return $tb_id;

+		}		

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Convert Reserved XML characters to Entities

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	string

+	 */

+	function convert_xml($str)

+	{

+		$temp = '__TEMP_AMPERSANDS__';

+		

+		$str = preg_replace("/&#(\d+);/", "$temp\\1;", $str);

+		$str = preg_replace("/&(\w+);/",  "$temp\\1;", $str);

+		

+		$str = str_replace(array("&","<",">","\"", "'", "-"),

+						   array("&amp;", "&lt;", "&gt;", "&quot;", "&#39;", "&#45;"),

+						   $str);

+			

+		$str = preg_replace("/$temp(\d+);/","&#\\1;",$str);

+		$str = preg_replace("/$temp(\w+);/","&\\1;", $str);

+			

+		return $str;

+	}	

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Character limiter

+	 *

+	 * Limits the string based on the character count. Will preserve complete words.

+	 *

+	 * @access	public

+	 * @param	string

+	 * @param	integer

+	 * @param	string

+	 * @return	string

+	 */

+	function limit_characters($str, $n = 500, $end_char = '&#8230;')

+	{

+		if (strlen($str) < $n)

+		{

+			return $str;

+		}

+			

+		$str = preg_replace("/\s+/", ' ', preg_replace("/(\r\n|\r|\n)/", " ", $str));

+	

+		if (strlen($str) <= $n)

+		{

+			return $str;

+		}

+										

+		$out = "";

+		foreach (explode(' ', trim($str)) as $val)

+		{

+			$out .= $val.' ';			

+			if (strlen($out) >= $n)

+			{

+				return trim($out).$end_char;

+			}		

+		}

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * High ASCII to Entities

+	 *

+	 * Converts Hight ascii text and MS Word special chars

+	 * to character entities

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	string

+	 */

+	function convert_ascii($str)

+	{

+	   $count	= 1;

+	   $out	= '';

+	   $temp	= array();

+		

+	   for ($i = 0, $s = strlen($str); $i < $s; $i++)

+	   {

+		   $ordinal = ord($str[$i]);

+		

+		   if ($ordinal < 128)

+		   {

+			   $out .= $str[$i];			

+		   }

+		   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);

+	

+				   $out .= '&#'.$number.';';

+				   $count = 1;

+				   $temp = array();

+			   }

+		   }

+	   }

+	

+	   return $out;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Set error message

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	void

+	 */	

+	function set_error($msg)

+	{

+		log_message('error', $msg);

+		$this->error_msg[] = $msg;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Show error messages

+	 *

+	 * @access	public

+	 * @param	string

+	 * @param	string

+	 * @return	string

+	 */	

+	function display_errors($open = '<p>', $close = '</p>')

+	{	

+		$str = '';

+		foreach ($this->error_msg as $val)

+		{

+			$str .= $open.$val.$close;

+		}

+	

+		return $str;

+	}

+

+}

+// END Trackback Class

 ?>
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