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/plugins/vjCommentPlugin/lib/tools/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Background.php

https://bitbucket.org/Kudlaty/360kdw
PHP | 87 lines | 59 code | 16 blank | 12 comment | 15 complexity | 8a16f12cb9b9f6d941b7a82f1c40862c MD5 | raw file
 1<?php
 2
 3/**
 4 * Validates shorthand CSS property background.
 5 * @warning Does not support url tokens that have internal spaces.
 6 */
 7class HTMLPurifier_AttrDef_CSS_Background extends HTMLPurifier_AttrDef
 8{
 9
10    /**
11     * Local copy of component validators.
12     * @note See HTMLPurifier_AttrDef_Font::$info for a similar impl.
13     */
14    protected $info;
15
16    public function __construct($config) {
17        $def = $config->getCSSDefinition();
18        $this->info['background-color'] = $def->info['background-color'];
19        $this->info['background-image'] = $def->info['background-image'];
20        $this->info['background-repeat'] = $def->info['background-repeat'];
21        $this->info['background-attachment'] = $def->info['background-attachment'];
22        $this->info['background-position'] = $def->info['background-position'];
23    }
24
25    public function validate($string, $config, $context) {
26
27        // regular pre-processing
28        $string = $this->parseCDATA($string);
29        if ($string === '') return false;
30
31        // munge rgb() decl if necessary
32        $string = $this->mungeRgb($string);
33
34        // assumes URI doesn't have spaces in it
35        $bits = explode(' ', strtolower($string)); // bits to process
36
37        $caught = array();
38        $caught['color']    = false;
39        $caught['image']    = false;
40        $caught['repeat']   = false;
41        $caught['attachment'] = false;
42        $caught['position'] = false;
43
44        $i = 0; // number of catches
45        $none = false;
46
47        foreach ($bits as $bit) {
48            if ($bit === '') continue;
49            foreach ($caught as $key => $status) {
50                if ($key != 'position') {
51                    if ($status !== false) continue;
52                    $r = $this->info['background-' . $key]->validate($bit, $config, $context);
53                } else {
54                    $r = $bit;
55                }
56                if ($r === false) continue;
57                if ($key == 'position') {
58                    if ($caught[$key] === false) $caught[$key] = '';
59                    $caught[$key] .= $r . ' ';
60                } else {
61                    $caught[$key] = $r;
62                }
63                $i++;
64                break;
65            }
66        }
67
68        if (!$i) return false;
69        if ($caught['position'] !== false) {
70            $caught['position'] = $this->info['background-position']->
71                validate($caught['position'], $config, $context);
72        }
73
74        $ret = array();
75        foreach ($caught as $value) {
76            if ($value === false) continue;
77            $ret[] = $value;
78        }
79
80        if (empty($ret)) return false;
81        return implode(' ', $ret);
82
83    }
84
85}
86
87// vim: et sw=4 sts=4