1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/*
* Copyright (c) 2007 Henri Sivonen
* Copyright (c) 2008-2010 Mozilla Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
package nu.validator.htmlparser.sax;
import org.xml.sax.SAXException;
import nu.validator.htmlparser.impl.HtmlAttributes;
import nu.validator.htmlparser.impl.TreeBuilder;
import nu.validator.saxtree.Characters;
import nu.validator.saxtree.Comment;
import nu.validator.saxtree.DTD;
import nu.validator.saxtree.Document;
import nu.validator.saxtree.DocumentFragment;
import nu.validator.saxtree.Element;
import nu.validator.saxtree.Node;
import nu.validator.saxtree.ParentNode;
class SAXTreeBuilder extends TreeBuilder<Element> {
private Document document;
private Node cachedTable = null;
private Node cachedTablePreviousSibling = null;
SAXTreeBuilder() {
super();
}
@Override
protected void appendComment(Element parent, char[] buf, int start, int length) {
parent.appendChild(new Comment(tokenizer, buf, start, length));
}
@Override
protected void appendCommentToDocument(char[] buf, int start, int length) {
document.appendChild(new Comment(tokenizer, buf, start, length));
}
@Override
protected void appendCharacters(Element parent, char[] buf, int start, int length) {
parent.appendChild(new Characters(tokenizer, buf, start, length));
}
@Override
protected boolean hasChildren(Element element) {
return element.getFirstChild() != null;
}
@Override
protected void appendElement(Element child, Element newParent) {
newParent.appendChild(child);
}
@Override
protected Element createHtmlElementSetAsRoot(HtmlAttributes attributes) {
Element newElt = new Element(tokenizer, "http://www.w3.org/1999/xhtml", "html", "html", attributes, true, null);
document.appendChild(newElt);
return newElt;
}
@Override
protected void addAttributesToElement(Element element, HtmlAttributes attributes) throws SAXException {
HtmlAttributes existingAttrs = (HtmlAttributes) element.getAttributes();
existingAttrs.merge(attributes);
}
/**
* @see nu.validator.htmlparser.impl.TreeBuilder#appendDoctypeToDocument(java.lang.String, java.lang.String, java.lang.String)
*/
@Override
protected void appendDoctypeToDocument(String name, String publicIdentifier, String systemIdentifier) {
DTD dtd = new DTD(tokenizer, name, publicIdentifier, systemIdentifier);
dtd.setEndLocator(tokenizer);
document.appendChild(dtd);
}
/**
* Returns the document.
*
* @return the document
*/
Document getDocument() {
Document rv = document;
document = null;
return rv;
}
DocumentFragment getDocumentFragment() {
DocumentFragment rv = new DocumentFragment();
rv.appendChildren(document.getFirstChild());
document = null;
return rv;
}
/**
* @throws SAXException
* @see nu.validator.htmlparser.impl.TreeBuilder#end()
*/
@Override
protected void end() throws SAXException {
document.setEndLocator(tokenizer);
cachedTable = null;
cachedTablePreviousSibling = null;
}
/**
* @see nu.validator.htmlparser.impl.TreeBuilder#start()
*/
@Override
protected void start(boolean fragment) {
document = new Document(tokenizer);
cachedTable = null;
cachedTablePreviousSibling = null;
}
@Override
protected void appendChildrenToNewParent(Element oldParent, Element newParent) throws SAXException {
newParent.appendChildren(oldParent);
}
@Override
protected Element createElement(String ns, String name, HtmlAttributes attributes,
Element intendedParent) throws SAXException {
return new Element(tokenizer, ns, name, name, attributes, true, null);
}
@Override
protected Element createAndInsertFosterParentedElement(String ns, String name,
HtmlAttributes attributes, Element table, Element stackParent) throws SAXException {
ParentNode parent = table.getParentNode();
Element child = createElement(ns, name, attributes, parent != null ? (Element) parent : stackParent);
if (parent != null) { // always an element if not null
parent.insertBetween(child, previousSibling(table), table);
cachedTablePreviousSibling = child;
} else {
stackParent.appendChild(child);
}
return child;
}
@Override protected void insertFosterParentedCharacters(char[] buf,
int start, int length, Element table, Element stackParent) throws SAXException {
Node child = new Characters(tokenizer, buf, start, length);
ParentNode parent = table.getParentNode();
if (parent != null) { // always an element if not null
parent.insertBetween(child, previousSibling(table), table);
cachedTablePreviousSibling = child;
} else {
stackParent.appendChild(child);
}
}
@Override protected void insertFosterParentedChild(Element child,
Element table, Element stackParent) throws SAXException {
ParentNode parent = table.getParentNode();
if (parent != null) { // always an element if not null
parent.insertBetween(child, previousSibling(table), table);
cachedTablePreviousSibling = child;
} else {
stackParent.appendChild(child);
}
}
private Node previousSibling(Node table) {
if (table == cachedTable) {
return cachedTablePreviousSibling;
} else {
cachedTable = table;
return (cachedTablePreviousSibling = table.getPreviousSibling());
}
}
@Override protected void detachFromParent(Element element)
throws SAXException {
element.detach();
}
}
|
