auto link

I decided I needed to have html attributes for my anchors generated by the auto_link helper so I did a quick extension. Didn't notice anyone else had posted it, so I thought I'd share. Perhaps this is too trivial for the wiki...but maybe this will help someone.

btw - of course this extension goes in ./application/helpers/MY_url_helper.php

[code] /**

• Modifies the auto_link helper (url_helper) by accepting as an optional third

• argument an array of html attributes for the anchor tags (just like the anchor helper).

• This array is supplied as the third argument, replacing the

• optional argument $pop in the original helper.

• This modified helper attempts to be backward compatible with the use of the

• original helper by accepting TRUE and FALSE as possible values for the $attributes

• argument, and giving output identical to the original usage of the helper.

• use: auto_link($string, 'url' , array('class' => 'external', 'target'=>'_blank'));

• use: auto_link($string, 'email', array('class' => 'email_link' , 'style' => 'color:red;'));

• use(legacy): auto_link($string, 'url' , TRUE);

• @see url_helper

• @link http://codeigniter.com/user_guide/helpers/url_helper.html

• @param string $str

• @param string $type

• @param mixed $attributes

• @return string */ function auto_link($str, $type = 'both', $attributes = '') { // MAKE THE THIRD ARGUMENT BACKWARD COMPATIBLE // here we deal with the original third argument $pop // which could be TRUE or FALSE, and was FALSE by default. $pop = ''; if ($attributes === TRUE) { $pop = ' target="_blank" '; $attributes = ''; } elseif ($attributes === FALSE) { $pop = $attributes = ''; }

   if ($type != 'email')
   {
  
       if (preg_match_all("#(^|\s|\()((http(s?)://)|(www\.))(\w+[^\s\)\<]+)#i", $str, $matches))
       {
                           
                           if( $attributes != '' )
                           {
                                   $attributes = _parse_attributes($attributes);
                           }
                          
  
           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].'">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, $str,$attributes);
           }
       }
   }
  
   return $str;
  

  }//END

[/code]