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authorNicolas Lœuillet <nicolas@loeuillet.org>2014-02-21 15:57:10 +0100
committerNicolas Lœuillet <nicolas@loeuillet.org>2014-02-21 15:57:10 +0100
commit99679d06884120c57f43b44e55e03595f1f87bed (patch)
treea3f2a1aa1afdaeca1386d0c6e8a75344fd2241fb /inc/3rdparty/htmlpurifier/HTMLPurifier/ContentSets.php
parent655214ab30ee84884dc408488b85586f36263fcb (diff)
parentd3b47e94705e17b3ba3529cbb1dc6efe69c5d2b7 (diff)
downloadwallabag-99679d06884120c57f43b44e55e03595f1f87bed.tar.gz
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Merge pull request #481 from wallabag/dev1.5.2
1.5.2
Diffstat (limited to 'inc/3rdparty/htmlpurifier/HTMLPurifier/ContentSets.php')
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1 files changed, 170 insertions, 0 deletions
diff --git a/inc/3rdparty/htmlpurifier/HTMLPurifier/ContentSets.php b/inc/3rdparty/htmlpurifier/HTMLPurifier/ContentSets.php
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1<?php
2
3/**
4 * @todo Unit test
5 */
6class HTMLPurifier_ContentSets
7{
8
9 /**
10 * List of content set strings (pipe separators) indexed by name.
11 * @type array
12 */
13 public $info = array();
14
15 /**
16 * List of content set lookups (element => true) indexed by name.
17 * @type array
18 * @note This is in HTMLPurifier_HTMLDefinition->info_content_sets
19 */
20 public $lookup = array();
21
22 /**
23 * Synchronized list of defined content sets (keys of info).
24 * @type array
25 */
26 protected $keys = array();
27 /**
28 * Synchronized list of defined content values (values of info).
29 * @type array
30 */
31 protected $values = array();
32
33 /**
34 * Merges in module's content sets, expands identifiers in the content
35 * sets and populates the keys, values and lookup member variables.
36 * @param HTMLPurifier_HTMLModule[] $modules List of HTMLPurifier_HTMLModule
37 */
38 public function __construct($modules)
39 {
40 if (!is_array($modules)) {
41 $modules = array($modules);
42 }
43 // populate content_sets based on module hints
44 // sorry, no way of overloading
45 foreach ($modules as $module) {
46 foreach ($module->content_sets as $key => $value) {
47 $temp = $this->convertToLookup($value);
48 if (isset($this->lookup[$key])) {
49 // add it into the existing content set
50 $this->lookup[$key] = array_merge($this->lookup[$key], $temp);
51 } else {
52 $this->lookup[$key] = $temp;
53 }
54 }
55 }
56 $old_lookup = false;
57 while ($old_lookup !== $this->lookup) {
58 $old_lookup = $this->lookup;
59 foreach ($this->lookup as $i => $set) {
60 $add = array();
61 foreach ($set as $element => $x) {
62 if (isset($this->lookup[$element])) {
63 $add += $this->lookup[$element];
64 unset($this->lookup[$i][$element]);
65 }
66 }
67 $this->lookup[$i] += $add;
68 }
69 }
70
71 foreach ($this->lookup as $key => $lookup) {
72 $this->info[$key] = implode(' | ', array_keys($lookup));
73 }
74 $this->keys = array_keys($this->info);
75 $this->values = array_values($this->info);
76 }
77
78 /**
79 * Accepts a definition; generates and assigns a ChildDef for it
80 * @param HTMLPurifier_ElementDef $def HTMLPurifier_ElementDef reference
81 * @param HTMLPurifier_HTMLModule $module Module that defined the ElementDef
82 */
83 public function generateChildDef(&$def, $module)
84 {
85 if (!empty($def->child)) { // already done!
86 return;
87 }
88 $content_model = $def->content_model;
89 if (is_string($content_model)) {
90 // Assume that $this->keys is alphanumeric
91 $def->content_model = preg_replace_callback(
92 '/\b(' . implode('|', $this->keys) . ')\b/',
93 array($this, 'generateChildDefCallback'),
94 $content_model
95 );
96 //$def->content_model = str_replace(
97 // $this->keys, $this->values, $content_model);
98 }
99 $def->child = $this->getChildDef($def, $module);
100 }
101
102 public function generateChildDefCallback($matches)
103 {
104 return $this->info[$matches[0]];
105 }
106
107 /**
108 * Instantiates a ChildDef based on content_model and content_model_type
109 * member variables in HTMLPurifier_ElementDef
110 * @note This will also defer to modules for custom HTMLPurifier_ChildDef
111 * subclasses that need content set expansion
112 * @param HTMLPurifier_ElementDef $def HTMLPurifier_ElementDef to have ChildDef extracted
113 * @param HTMLPurifier_HTMLModule $module Module that defined the ElementDef
114 * @return HTMLPurifier_ChildDef corresponding to ElementDef
115 */
116 public function getChildDef($def, $module)
117 {
118 $value = $def->content_model;
119 if (is_object($value)) {
120 trigger_error(
121 'Literal object child definitions should be stored in '.
122 'ElementDef->child not ElementDef->content_model',
123 E_USER_NOTICE
124 );
125 return $value;
126 }
127 switch ($def->content_model_type) {
128 case 'required':
129 return new HTMLPurifier_ChildDef_Required($value);
130 case 'optional':
131 return new HTMLPurifier_ChildDef_Optional($value);
132 case 'empty':
133 return new HTMLPurifier_ChildDef_Empty();
134 case 'custom':
135 return new HTMLPurifier_ChildDef_Custom($value);
136 }
137 // defer to its module
138 $return = false;
139 if ($module->defines_child_def) { // save a func call
140 $return = $module->getChildDef($def);
141 }
142 if ($return !== false) {
143 return $return;
144 }
145 // error-out
146 trigger_error(
147 'Could not determine which ChildDef class to instantiate',
148 E_USER_ERROR
149 );
150 return false;
151 }
152
153 /**
154 * Converts a string list of elements separated by pipes into
155 * a lookup array.
156 * @param string $string List of elements
157 * @return array Lookup array of elements
158 */
159 protected function convertToLookup($string)
160 {
161 $array = explode('|', str_replace(' ', '', $string));
162 $ret = array();
163 foreach ($array as $k) {
164 $ret[$k] = true;
165 }
166 return $ret;
167 }
168}
169
170// vim: et sw=4 sts=4
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 04:48:09 +0000