File xoops_lib\modules\protector\library\HTMLPurifier\AttrTransform\ImgRequired.php

1:	<?php
2:
3:	// must be called POST validation
4:
5:	/**
6:	* Transform that supplies default values for the src and alt attributes
7:	* in img tags, as well as prevents the img tag from being removed
8:	* because of a missing alt tag. This needs to be registered as both
9:	* a pre and post attribute transform.
10:	*/
11:	class HTMLPurifier_AttrTransform_ImgRequired extends HTMLPurifier_AttrTransform
12:	{
13:
14:	/**
15:	* @param array $attr
16:	* @param HTMLPurifier_Config $config
17:	* @param HTMLPurifier_Context $context
18:	* @return array
19:	*/
20:	public function transform($attr, $config, $context)
21:	{
22:	$src = true;
23:	if (!isset($attr['src'])) {
24:	if ($config->get('Core.RemoveInvalidImg')) {
25:	return $attr;
26:	}
27:	$attr['src'] = $config->get('Attr.DefaultInvalidImage');
28:	$src = false;
29:	}
30:
31:	if (!isset($attr['alt'])) {
32:	if ($src) {
33:	$alt = $config->get('Attr.DefaultImageAlt');
34:	if ($alt === null) {
35:	$attr['alt'] = basename($attr['src']);
36:	} else {
37:	$attr['alt'] = $alt;
38:	}
39:	} else {
40:	$attr['alt'] = $config->get('Attr.DefaultInvalidImageAlt');
41:	}
42:	}
43:	return $attr;
44:	}
45:	}
46:
47:	// vim: et sw=4 sts=4
48: