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htmlpurifier/Token.php
2006-07-22 13:50:05 +00:00

70 lines
1.8 KiB
PHP

<?php
// all objects here are immutable
class HTMLPurifier_Token {} // abstract
class HTMLPurifier_Token_Tag extends HTMLPurifier_Token // abstract
{
var $is_tag = true;
var $name;
function HTMLPurifier_Token_Tag($name) {
// watch out, actually XML is case-sensitive, while HTML
// is case insensitive, which means we can't use this for XML
$this->name = strtolower($name); // for some reason, the SAX parser
// uses uppercase. Investigate?
}
}
// a rich tag has attributes
class HTMLPurifier_Token_RichTag extends HTMLPurifier_Token_Tag // abstract
{
var $attributes = array();
function HTMLPurifier_Token_RichTag($name, $attributes = array()) {
$this->HTMLPurifier_Token_Tag($name);
$this->attributes = $attributes;
}
}
// start CONCRETE ones
class HTMLPurifier_Token_Start extends HTMLPurifier_Token_RichTag
{
var $type = 'start';
}
class HTMLPurifier_Token_Empty extends HTMLPurifier_Token_RichTag
{
var $type = 'empty';
}
class HTMLPurifier_Token_End extends HTMLPurifier_Token_Tag
{
var $type = 'end';
}
class HTMLPurifier_Token_Text extends HTMLPurifier_Token
{
var $name = '#PCDATA';
var $type = 'text';
var $data;
var $is_whitespace = false;
function HTMLPurifier_Token_Text($data) {
$this->data = $data;
if (trim($data, " \n\r\t") === '') $this->is_whitespace = true;
}
function append($text) {
return new HTMLPurifier_Token_Text($this->data . $text->data);
}
}
class HTMLPurifier_Token_Comment extends HTMLPurifier_Token
{
var $data;
var $type = 'comment';
function HTMLPurifier_Token_Comment($data) {
$this->data = $data;
}
}
?>