root/trunk/lib/symfonians/SymfoniansToolkit.class.php

<?php
/**
 * Symfonians toolkit
 *
 * @package utils
 */
class SymfoniansToolkit
{
  
  /**
   * Very dirty way to replace / starting links by domain abs ones
   *
   * @param  string $html
   * @param  string $domain
   * @return string
   */
  public static function absolutizeLinks($html, $domain)
  {
    return str_replace('href="/', 'href="http://'.$domain.'/', $html);
  }
  
  /**
   * Removes carriage returns, tabs and double spaces
   *
   * @param  string $string
   * @return string
   */
  public static function onelinize($string)
  {
    $string = strip_tags(trim($string));
    $string = str_replace(array("\n", "\r", "\t"),
                          array(' ', ' ', ' '),
                          $string);
    while (preg_match('/  /', $string))
    {
      $string = str_replace('  ', ' ', $string);
    }
    return $string;
  }
  
  /**
   * Transforms url in a text into HTML links
   *
   * @param  string $text
   * @return string
   */
  public static function transformUrls($text)
  {
    //Transform URL and e-mails into links
    $text = eregi_replace(
       "(^|[ \t\r\n\(:,]+)?". //punctuation before URL
       //Protocole
       "((ftp|http|https|gopher|mailto|pop|smtp|news|nntp|telnet|wais|".
       "file|imap|prospero|peercast|ed2k|irc|aim|mime|ftam|pnm|rtsp|ldap):".
       "[A-Za-z0-9/](([A-Za-z0-9$|.+!*()\.,;/?:@&~=_-])|%[A-Fa-f0-9]{2})+".
       "[A-Za-z0-9/&#=_-]+)". //valid chars at the end of an URL
       "([\.\),:;? \t\r\n]+([^A-Za-z0-9/&%#=_-]|$))?", //punctuation not followed by valid char
     "\\1<a href='\\2'>\\2</a>\\6", $text);
    
    $text = eregi_replace("(^|[ \t\r\n\(,<>:]+)?".
       "([_a-z0-9-]+[^:/=](\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)+(\?[&;A-Za-z0-9=_-]+)?)".
       "([\.\),:;<>? \t\r\n]+([^A-Za-z0-9/&%#=_-]|$))?",
     "\\1<a href=\"mailto:\\2\">\\2</a>\\6", $text); 
    
    return $text;
  }
  
}