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<?php
# ***** BEGIN LICENSE BLOCK *****
# This file is part of Clearbricks.
# Copyright (c) 2006 Olivier Meunier and contributors. All rights
# reserved.
#
# Clearbricks is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# Clearbricks is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Clearbricks; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# ***** END LICENSE BLOCK *****
class html
{
public static $url_root;
/**
@function escapeHTML
Replaces HTML special characters by entities.
@param str string String to escape
@return string
*/
public static function escapeHTML($str)
{
return htmlspecialchars($str,ENT_COMPAT,'UTF-8');
}
/**
@function decodeEntities
Returns a string with all entities decoded.
@param str string String to protect
@param keep_special string Keep special characters: > < &
@return string
*/
public static function decodeEntities($str,$keep_special=false)
{
if ($keep_special) {
$str = str_replace(
array('&','>','<'),
array('&amp;','&gt;','&lt;'),
$str);
}
# Some extra replacements
$extra = array(
''' => "'"
);
$str = str_replace(array_keys($extra),array_values($extra),$str);
return html_entity_decode($str,ENT_QUOTES,'UTF-8');
}
/**
@function clean
Removes every tags, comments, cdata from string
@param str string String to clean
@return string
*/
public static function clean($str)
{
$str = strip_tags($str);
return $str;
}
/**
@function escapeJS
Returns a protected JavaScript string
@param string str String to protect
@return string
*/
public static function escapeJS($str)
{
$str = htmlspecialchars($str,ENT_NOQUOTES,'UTF-8');
$str = str_replace("'","\'",$str);
$str = str_replace('"','\"',$str);
return $str;
}
/**
@function escapeURL
Returns an escaped URL string for HTML content
@param str string String to escape
@return string
*/
public static function escapeURL($str)
{
return str_replace('&','&',$str);
}
/**
@function sanitizeURL
Encode every parts between / in url
@param str string String to satinyze
@return string
*/
public static function sanitizeURL($str)
{
return str_replace('%2F','/',rawurlencode($str));
}
/**
@function stripHostURL
Removes host part in URL
@param url string URL to transform
@return string
*/
public static function stripHostURL($url)
{
return preg_replace('|^[a-z]{3,}://.*?(/.*$)|','$1',$url);
}
/**
@function absoluteURLs
Appends $root URL to URIs attributes in $str.
@param str string HTML to transform
@param root string Base URL
@return string
*/
public static function absoluteURLs($str,$root)
{
self::$url_root = $root;
$attr = 'action|background|cite|classid|codebase|data|href|longdesc|profile|src|usemap';
return preg_replace_callback('/((?:'.$attr.')=")(.*?)(")/msu',array('self','absoluteURLHandler'),$str);
}
private static function absoluteURLHandler($m)
{
$url = $m[2];
$link = $m[1].'%s'.$m[3];
$host = preg_replace('|^([a-z]{3,}://)(.*?)/(.*)$|','$1$2',self::$url_root);
if (!preg_match('|^[a-z]{3,}://|',$url))
{
if (strpos($url,'/') === 0) {
$url = $host.$url;
} elseif (preg_match('|/$|',self::$url_root)) {
$url = self::$url_root.$url;
} else {
$url = dirname(self::$url_root).'/'.$url;
}
}
return sprintf($link,$url);
}
}
?>