Файл: framework/parsers/HTML/BBCodeParser/Filter/Links.php
Строк: 158
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2003 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Author: Stijn de Reede <sjr@gmx.co.uk> |
// +----------------------------------------------------------------------+
//
// $Id: Links.php,v 1.12 2007/07/02 18:26:17 cweiske Exp $
//
/**
* @package framework
* @subpackage misc
* @author Stijn de Reede <sjr@gmx.co.uk>
*/
/**
*/
require_once 'HTML/BBCodeParser/Filter.php';
/**
* @package framework
* @subpackage misc
*/
class SSHTMLBBCodeParser_Filter_Links extends SSHTMLBBCodeParser_Filter
{
/**
* List of allowed schemes
*
* @access private
* @var array
*/
var $_allowedSchemes = array('http', 'https', 'ftp');
/**
* Default scheme
*
* @access private
* @var string
*/
var $_defaultScheme = 'http';
/**
* An array of tags parsed by the engine
*
* @access private
* @var array
*/
var $_definedTags = array(
'url' => array(
'htmlopen' => 'a',
'htmlclose' => 'a',
'allowed' => 'none^img',
'attributes'=> array('url' => 'href=%2$s%1$s%2$s')
)
);
/**
* Executes statements before the actual array building starts
*
* This method should be overwritten in a filter if you want to do
* something before the parsing process starts. This can be useful to
* allow certain short alternative tags which then can be converted into
* proper tags with preg_replace() calls.
* The main class walks through all the filters and and calls this
* method if it exists. The filters should modify their private $_text
* variable.
*
* @return none
* @access private
* @see $_text
* @author Stijn de Reede <sjr@gmx.co.uk>
* @author Seth Price <seth@pricepages.org>
*/
public function _preparse()
{
$options = SSHTMLBBCodeParser::getStaticProperty('SSHTMLBBCodeParser', '_options');
$o = $options['open'];
$c = $options['close'];
$oe = $options['open_esc'];
$ce = $options['close_esc'];
$schemes = implode('|', $this->_allowedSchemes);
$pattern = array( "/(?<!["'=".$ce."/])(".$oe."[^".$ce."]*".$ce.")?(((".$schemes.")://|www)[@-a-z0-9.]+.[a-z]{2,4}[^s()[]]*)/i",
"!".$oe."url(".$ce."|s.*".$ce.")(.*)".$oe."/url".$ce."!iU",
"!".$oe."url=((([a-z]*:(//)?)|www)[@-a-z0-9.]+)([^s[]]*)".$ce."(.*)".$oe."/url".$ce."!i");
$pp = preg_replace_callback($pattern[0], array($this, 'smarterPPLinkExpand'), $this->_text);
$pp = preg_replace($pattern[1], $o."url=$2$1$2".$o."/url".$c, $pp);
$this->_preparsed = preg_replace_callback($pattern[2], array($this, 'smarterPPLink'), $pp);
}
/**
* Intelligently expand a URL into a link
*
* @return string
* @access private
* @author Seth Price <seth@pricepages.org>
* @author Lorenzo Alberton <l.alberton@quipo.it>
*/
public function smarterPPLinkExpand($matches)
{
$options = SSHTMLBBCodeParser::getStaticProperty('SSHTMLBBCodeParser','_options');
$o = $options['open'];
$c = $options['close'];
//If we have an intro tag that is [url], then skip this match
if ($matches[1] == $o.'url'.$c) {
return $matches[0];
}
if(!BBCodeParser::autolinkUrls()){
return $matches[0];
}
$punctuation = '.,;:'; // Links can't end with these chars
$trailing = '';
// Knock off ending punctuation
$last = substr($matches[2], -1);
while (strpos($punctuation, $last) !== false) {
// Last character is punctuation - remove it from the url
$trailing = $last.$trailing;
$matches[2] = substr($matches[2], 0, -1);
$last = substr($matches[2], -1);
}
$off = strpos($matches[2], ':');
//Is a ":" (therefore a scheme) defined?
if ($off === false) {
/*
* Create a link with the default scheme of http. Notice that the
* text that is viewable to the user is unchanged, but the link
* itself contains the "http://".
*/
return $matches[1].$o.'url='.$this->_defaultScheme.'://'.$matches[2].$c.$matches[2].$o.'/url'.$c.$trailing;
}
$scheme = substr($matches[2], 0, $off);
/*
* If protocol is in the approved list than allow it. Note that this
* check isn't really needed, but the created link will just be deleted
* later in smarterPPLink() if we create it now and it isn't on the
* scheme list.
*/
if (in_array($scheme, $this->_allowedSchemes)) {
return $matches[1].$o.'url'.$c.$matches[2].$o.'/url'.$c.$trailing;
}
return $matches[0];
}
/**
* Finish preparsing URL to clean it up
*
* @return string
* @access private
* @author Seth Price <seth@pricepages.org>
*/
public function smarterPPLink($matches)
{
$options = SSHTMLBBCodeParser::getStaticProperty('SSHTMLBBCodeParser','_options');
$o = $options['open'];
$c = $options['close'];
$urlServ = $matches[1];
$path = $matches[5];
$off = strpos($urlServ, ':');
if ($off === false) {
//Default to http
$urlServ = $this->_defaultScheme.'://'.$urlServ;
$off = strpos($urlServ, ':');
}
//Add trailing slash if missing (to create a valid URL)
if (!$path) {
$path = '/';
}
$protocol = substr($urlServ, 0, $off);
if (in_array($protocol, $this->_allowedSchemes)) {
//If protocol is in the approved list than allow it
return $o.'url='.$urlServ.$path.$c.$matches[6].$o.'/url'.$c;
}
//Else remove url tag
return $matches[6];
}
}