File xoops_lib\modules\protector\library\HTMLPurifier\AttrDef\CSS\Background.php

1:	<?php
2:
3:	/**
4:	* Validates shorthand CSS property background.
5:	* @warning Does not support url tokens that have internal spaces.
6:	*/
7:	class HTMLPurifier_AttrDef_CSS_Background extends HTMLPurifier_AttrDef
8:	{
9:
10:	/**
11:	* Local copy of component validators.
12:	* @type HTMLPurifier_AttrDef[]
13:	* @note See HTMLPurifier_AttrDef_Font::$info for a similar impl.
14:	*/
15:	protected $info;
16:
17:	/**
18:	* @param HTMLPurifier_Config $config
19:	*/
20:	public function __construct($config)
21:	{
22:	$def = $config->getCSSDefinition();
23:	$this->info['background-color'] = $def->info['background-color'];
24:	$this->info['background-image'] = $def->info['background-image'];
25:	$this->info['background-repeat'] = $def->info['background-repeat'];
26:	$this->info['background-attachment'] = $def->info['background-attachment'];
27:	$this->info['background-position'] = $def->info['background-position'];
28:	$this->info['background-size'] = $def->info['background-size'];
29:	}
30:
31:	/**
32:	* @param string $string
33:	* @param HTMLPurifier_Config $config
34:	* @param HTMLPurifier_Context $context
35:	* @return bool\|string
36:	*/
37:	public function validate($string, $config, $context)
38:	{
39:	// regular pre-processing
40:	$string = $this->parseCDATA($string);
41:	if ($string === '') {
42:	return false;
43:	}
44:
45:	// munge rgb() decl if necessary
46:	$string = $this->mungeRgb($string);
47:
48:	// assumes URI doesn't have spaces in it
49:	$bits = explode(' ', $string); // bits to process
50:
51:	$caught = array();
52:	$caught['color'] = false;
53:	$caught['image'] = false;
54:	$caught['repeat'] = false;
55:	$caught['attachment'] = false;
56:	$caught['position'] = false;
57:	$caught['size'] = false;
58:
59:	$i = 0; // number of catches
60:
61:	foreach ($bits as $bit) {
62:	if ($bit === '') {
63:	continue;
64:	}
65:	foreach ($caught as $key => $status) {
66:	if ($key != 'position') {
67:	if ($status !== false) {
68:	continue;
69:	}
70:	$r = $this->info['background-' . $key]->validate($bit, $config, $context);
71:	} else {
72:	$r = $bit;
73:	}
74:	if ($r === false) {
75:	continue;
76:	}
77:	if ($key == 'position') {
78:	if ($caught[$key] === false) {
79:	$caught[$key] = '';
80:	}
81:	$caught[$key] .= $r . ' ';
82:	} else {
83:	$caught[$key] = $r;
84:	}
85:	$i++;
86:	break;
87:	}
88:	}
89:
90:	if (!$i) {
91:	return false;
92:	}
93:	if ($caught['position'] !== false) {
94:	$caught['position'] = $this->info['background-position']->
95:	validate($caught['position'], $config, $context);
96:	}
97:
98:	$ret = array();
99:	foreach ($caught as $value) {
100:	if ($value === false) {
101:	continue;
102:	}
103:	$ret[] = $value;
104:	}
105:
106:	if (empty($ret)) {
107:	return false;
108:	}
109:	return implode(' ', $ret);
110:	}
111:	}
112:
113:	// vim: et sw=4 sts=4
114:

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