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
|
/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY GOOGLE INC. AND ITS CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC.
* OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/core/xml/parser/xml_errors.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/dom/text.h"
#include "third_party/blink/renderer/core/html_names.h"
#include "third_party/blink/renderer/core/svg_names.h"
#include "third_party/blink/renderer/core/xml/document_xslt.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
const int kMaxErrors = 25;
XMLErrors::XMLErrors(Document* document)
: document_(document),
error_count_(0),
last_error_position_(TextPosition::BelowRangePosition()) {}
void XMLErrors::Trace(Visitor* visitor) {
visitor->Trace(document_);
}
void XMLErrors::HandleError(ErrorType type,
const char* message,
int line_number,
int column_number) {
HandleError(type, message,
TextPosition(OrdinalNumber::FromOneBasedInt(line_number),
OrdinalNumber::FromOneBasedInt(column_number)));
}
void XMLErrors::HandleError(ErrorType type,
const char* message,
TextPosition position) {
if (type == kErrorTypeFatal ||
(error_count_ < kMaxErrors &&
last_error_position_.line_ != position.line_ &&
last_error_position_.column_ != position.column_)) {
switch (type) {
case kErrorTypeWarning:
AppendErrorMessage("warning", position, message);
break;
case kErrorTypeFatal:
case kErrorTypeNonFatal:
AppendErrorMessage("error", position, message);
}
last_error_position_ = position;
++error_count_;
}
}
void XMLErrors::AppendErrorMessage(const String& type_string,
TextPosition position,
const char* message) {
// <typeString> on line <lineNumber> at column <columnNumber>: <message>
error_messages_.Append(type_string);
error_messages_.Append(" on line ");
error_messages_.AppendNumber(position.line_.OneBasedInt());
error_messages_.Append(" at column ");
error_messages_.AppendNumber(position.column_.OneBasedInt());
error_messages_.Append(": ");
error_messages_.Append(message);
}
static inline Element* CreateXHTMLParserErrorHeader(
Document* doc,
const String& error_messages) {
const CreateElementFlags flags = CreateElementFlags::ByParser();
Element* report_element = doc->CreateRawElement(
QualifiedName(g_null_atom, "parsererror", html_names::xhtmlNamespaceURI),
flags);
Vector<Attribute> report_attributes;
report_attributes.push_back(Attribute(
html_names::kStyleAttr,
"display: block; white-space: pre; border: 2px solid #c77; padding: 0 "
"1em 0 1em; margin: 1em; background-color: #fdd; color: black"));
report_element->ParserSetAttributes(report_attributes);
Element* h3 = doc->CreateRawElement(html_names::kH3Tag, flags);
report_element->ParserAppendChild(h3);
h3->ParserAppendChild(
doc->createTextNode("This page contains the following errors:"));
Element* fixed = doc->CreateRawElement(html_names::kDivTag, flags);
Vector<Attribute> fixed_attributes;
fixed_attributes.push_back(Attribute(html_names::kStyleAttr,
"font-family:monospace;font-size:12px"));
fixed->ParserSetAttributes(fixed_attributes);
report_element->ParserAppendChild(fixed);
fixed->ParserAppendChild(doc->createTextNode(error_messages));
h3 = doc->CreateRawElement(html_names::kH3Tag, flags);
report_element->ParserAppendChild(h3);
h3->ParserAppendChild(doc->createTextNode(
"Below is a rendering of the page up to the first error."));
return report_element;
}
void XMLErrors::InsertErrorMessageBlock() {
// One or more errors occurred during parsing of the code. Display an error
// block to the user above the normal content (the DOM tree is created
// manually and includes line/col info regarding where the errors are located)
// Create elements for display
const CreateElementFlags flags = CreateElementFlags::ByParser();
Element* document_element = document_->documentElement();
if (!document_element) {
Element* root_element =
document_->CreateRawElement(html_names::kHTMLTag, flags);
Element* body = document_->CreateRawElement(html_names::kBodyTag, flags);
root_element->ParserAppendChild(body);
document_->ParserAppendChild(root_element);
document_element = body;
} else if (document_element->namespaceURI() == svg_names::kNamespaceURI) {
Element* root_element =
document_->CreateRawElement(html_names::kHTMLTag, flags);
Element* head = document_->CreateRawElement(html_names::kHeadTag, flags);
Element* style = document_->CreateRawElement(html_names::kStyleTag, flags);
head->ParserAppendChild(style);
style->ParserAppendChild(
document_->createTextNode("html, body { height: 100% } parsererror + "
"svg { width: 100%; height: 100% }"));
style->FinishParsingChildren();
root_element->ParserAppendChild(head);
Element* body = document_->CreateRawElement(html_names::kBodyTag, flags);
root_element->ParserAppendChild(body);
document_->ParserRemoveChild(*document_element);
body->ParserAppendChild(document_element);
document_->ParserAppendChild(root_element);
document_element = body;
}
String error_messages = error_messages_.ToString();
Element* report_element =
CreateXHTMLParserErrorHeader(document_, error_messages);
if (DocumentXSLT::HasTransformSourceDocument(*document_)) {
Vector<Attribute> attributes;
attributes.push_back(
Attribute(html_names::kStyleAttr, "white-space: normal"));
Element* paragraph = document_->CreateRawElement(html_names::kPTag, flags);
paragraph->ParserSetAttributes(attributes);
paragraph->ParserAppendChild(document_->createTextNode(
"This document was created as the result of an XSL transformation. The "
"line and column numbers given are from the transformed result."));
report_element->ParserAppendChild(paragraph);
}
Node* first_child = document_element->firstChild();
if (first_child)
document_element->ParserInsertBefore(report_element, *first_child);
else
document_element->ParserAppendChild(report_element);
// FIXME: Why do we need to call this manually?
document_->UpdateStyleAndLayoutTree();
}
} // namespace blink
|
