|
1
|
|
|
<?php |
|
2
|
|
|
namespace Masterminds\HTML5\Parser; |
|
3
|
|
|
|
|
4
|
|
|
/** |
|
5
|
|
|
* Handles special-case rules for the DOM tree builder. |
|
6
|
|
|
* |
|
7
|
|
|
* Many tags have special rules that need to be accomodated on an |
|
8
|
|
|
* individual basis. This class handles those rules. |
|
9
|
|
|
* |
|
10
|
|
|
* See section 8.1.2.4 of the spec. |
|
11
|
|
|
* |
|
12
|
|
|
* @todo - colgroup and col special behaviors |
|
13
|
|
|
* - body and head special behaviors |
|
14
|
|
|
*/ |
|
15
|
|
|
class TreeBuildingRules |
|
16
|
|
|
{ |
|
17
|
|
|
|
|
18
|
|
|
protected static $tags = array( |
|
19
|
|
|
'li' => 1, |
|
20
|
|
|
'dd' => 1, |
|
21
|
|
|
'dt' => 1, |
|
22
|
|
|
'rt' => 1, |
|
23
|
|
|
'rp' => 1, |
|
24
|
|
|
'tr' => 1, |
|
25
|
|
|
'th' => 1, |
|
26
|
|
|
'td' => 1, |
|
27
|
|
|
'thead' => 1, |
|
28
|
|
|
'tfoot' => 1, |
|
29
|
|
|
'tbody' => 1, |
|
30
|
|
|
'table' => 1, |
|
31
|
|
|
'optgroup' => 1, |
|
32
|
|
|
'option' => 1 |
|
33
|
|
|
); |
|
34
|
|
|
|
|
35
|
|
|
/** |
|
36
|
|
|
* Build a new rules engine. |
|
37
|
|
|
* |
|
38
|
|
|
* @param \DOMDocument $doc |
|
39
|
|
|
* The DOM document to use for evaluation and modification. |
|
40
|
|
|
*/ |
|
41
|
111 |
|
public function __construct($doc) |
|
42
|
|
|
{ |
|
43
|
111 |
|
$this->doc = $doc; |
|
44
|
111 |
|
} |
|
45
|
|
|
|
|
46
|
|
|
/** |
|
47
|
|
|
* Returns true if the given tagname has special processing rules. |
|
48
|
|
|
*/ |
|
49
|
107 |
|
public function hasRules($tagname) |
|
50
|
|
|
{ |
|
51
|
107 |
|
return isset(static::$tags[$tagname]); |
|
52
|
|
|
} |
|
53
|
|
|
|
|
54
|
|
|
/** |
|
55
|
|
|
* Evaluate the rule for the current tag name. |
|
56
|
|
|
* |
|
57
|
|
|
* This may modify the existing DOM. |
|
58
|
|
|
* |
|
59
|
|
|
* @return \DOMElement The new Current DOM element. |
|
60
|
|
|
*/ |
|
61
|
6 |
|
public function evaluate($new, $current) |
|
62
|
|
|
{ |
|
63
|
6 |
|
switch ($new->tagName) { |
|
64
|
6 |
|
case 'li': |
|
65
|
2 |
|
return $this->handleLI($new, $current); |
|
66
|
4 |
|
case 'dt': |
|
67
|
4 |
|
case 'dd': |
|
68
|
1 |
|
return $this->handleDT($new, $current); |
|
69
|
3 |
|
case 'rt': |
|
70
|
3 |
|
case 'rp': |
|
71
|
|
|
return $this->handleRT($new, $current); |
|
72
|
3 |
|
case 'optgroup': |
|
73
|
2 |
|
return $this->closeIfCurrentMatches($new, $current, array( |
|
74
|
|
|
'optgroup' |
|
75
|
2 |
|
)); |
|
76
|
3 |
|
case 'option': |
|
77
|
2 |
|
return $this->closeIfCurrentMatches($new, $current, array( |
|
78
|
2 |
|
'option', |
|
79
|
2 |
|
)); |
|
80
|
1 |
|
case 'tr': |
|
81
|
|
|
return $this->closeIfCurrentMatches($new, $current, array( |
|
82
|
|
|
'tr' |
|
83
|
|
|
)); |
|
84
|
1 |
|
case 'td': |
|
85
|
1 |
|
case 'th': |
|
86
|
1 |
|
return $this->closeIfCurrentMatches($new, $current, array( |
|
87
|
1 |
|
'th', |
|
88
|
|
|
'td' |
|
89
|
1 |
|
)); |
|
90
|
1 |
|
case 'tbody': |
|
91
|
1 |
|
case 'thead': |
|
92
|
1 |
|
case 'tfoot': |
|
93
|
1 |
|
case 'table': // Spec isn't explicit about this, but it's necessary. |
|
94
|
|
|
|
|
95
|
1 |
|
return $this->closeIfCurrentMatches($new, $current, array( |
|
96
|
1 |
|
'thead', |
|
97
|
1 |
|
'tfoot', |
|
98
|
|
|
'tbody' |
|
99
|
1 |
|
)); |
|
100
|
|
|
} |
|
101
|
|
|
|
|
102
|
|
|
return $current; |
|
103
|
|
|
} |
|
104
|
|
|
|
|
105
|
2 |
|
protected function handleLI($ele, $current) |
|
106
|
|
|
{ |
|
107
|
2 |
|
return $this->closeIfCurrentMatches($ele, $current, array( |
|
108
|
|
|
'li' |
|
109
|
2 |
|
)); |
|
110
|
|
|
} |
|
111
|
|
|
|
|
112
|
1 |
|
protected function handleDT($ele, $current) |
|
113
|
|
|
{ |
|
114
|
1 |
|
return $this->closeIfCurrentMatches($ele, $current, array( |
|
115
|
1 |
|
'dt', |
|
116
|
|
|
'dd' |
|
117
|
1 |
|
)); |
|
118
|
|
|
} |
|
119
|
|
|
|
|
120
|
|
|
protected function handleRT($ele, $current) |
|
121
|
|
|
{ |
|
122
|
|
|
return $this->closeIfCurrentMatches($ele, $current, array( |
|
123
|
|
|
'rt', |
|
124
|
|
|
'rp' |
|
125
|
|
|
)); |
|
126
|
|
|
} |
|
127
|
|
|
|
|
128
|
6 |
|
protected function closeIfCurrentMatches($ele, $current, $match) |
|
129
|
|
|
{ |
|
130
|
6 |
|
if (in_array($current->tagName, $match)) { |
|
131
|
4 |
|
$current->parentNode->appendChild($ele); |
|
132
|
4 |
|
} else { |
|
133
|
6 |
|
$current->appendChild($ele); |
|
134
|
|
|
} |
|
135
|
|
|
|
|
136
|
6 |
|
return $ele; |
|
137
|
|
|
} |
|
138
|
|
|
} |
|
139
|
|
|
|
Masterminds /
html5-php
