1<?php
2
3/**
4 * Abstract class of a tag token (start, end or empty), and its behavior.
5 */
6abstract class HTMLPurifier_Token_Tag extends HTMLPurifier_Token
7{
8    /**
9     * Static bool marker that indicates the class is a tag.
10     *
11     * This allows us to check objects with <tt>!empty($obj->is_tag)</tt>
12     * without having to use a function call <tt>is_a()</tt>.
13     * @type bool
14     */
15    public $is_tag = true;
16
17    /**
18     * The lower-case name of the tag, like 'a', 'b' or 'blockquote'.
19     *
20     * @note Strictly speaking, XML tags are case sensitive, so we shouldn't
21     * be lower-casing them, but these tokens cater to HTML tags, which are
22     * insensitive.
23     * @type string
24     */
25    public $name;
26
27    /**
28     * Associative array of the tag's attributes.
29     * @type array
30     */
31    public $attr = array();
32
33    /**
34     * Non-overloaded constructor, which lower-cases passed tag name.
35     *
36     * @param string $name String name.
37     * @param array $attr Associative array of attributes.
38     * @param int $line
39     * @param int $col
40     * @param array $armor
41     */
42    public function __construct($name, $attr = array(), $line = null, $col = null, $armor = array())
43    {
44        $this->name = ctype_lower($name) ? $name : strtolower($name);
45        foreach ($attr as $key => $value) {
46            // normalization only necessary when key is not lowercase
47            if (!ctype_lower($key)) {
48                $new_key = strtolower($key);
49                if (!isset($attr[$new_key])) {
50                    $attr[$new_key] = $attr[$key];
51                }
52                if ($new_key !== $key) {
53                    unset($attr[$key]);
54                }
55            }
56        }
57        $this->attr = $attr;
58        $this->line = $line;
59        $this->col = $col;
60        $this->armor = $armor;
61    }
62
63    public function toNode() {
64        return new HTMLPurifier_Node_Element($this->name, $this->attr, $this->line, $this->col, $this->armor);
65    }
66}
67
68// vim: et sw=4 sts=4
69