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
|
/*
* Copyright (C) 2010 Apple 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 APPLE 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 APPLE 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.
*/
#ifndef HTMLParserIdioms_h
#define HTMLParserIdioms_h
#include "core/dom/QualifiedName.h"
#include "platform/Decimal.h"
#include "wtf/Forward.h"
#include "wtf/text/WTFString.h"
namespace WTF {
class TextEncoding;
}
namespace WebCore {
// Strip leading and trailing whitespace as defined by the HTML specification.
String stripLeadingAndTrailingHTMLSpaces(const String&);
template<size_t inlineCapacity>
String stripLeadingAndTrailingHTMLSpaces(const Vector<UChar, inlineCapacity>& vector)
{
return stripLeadingAndTrailingHTMLSpaces(StringImpl::create8BitIfPossible(vector));
}
// An implementation of the HTML specification's algorithm to convert a number to a string for number and range types.
String serializeForNumberType(const Decimal&);
String serializeForNumberType(double);
// Convert the specified string to a decimal/double. If the conversion fails, the return value is fallback value or NaN if not specified.
// Leading or trailing illegal characters cause failure, as does passing an empty string.
// The double* parameter may be 0 to check if the string can be parsed without getting the result.
Decimal parseToDecimalForNumberType(const String&, const Decimal& fallbackValue = Decimal::nan());
double parseToDoubleForNumberType(const String&, double fallbackValue = std::numeric_limits<double>::quiet_NaN());
// http://www.whatwg.org/specs/web-apps/current-work/#rules-for-parsing-integers
bool parseHTMLInteger(const String&, int&);
// http://www.whatwg.org/specs/web-apps/current-work/#rules-for-parsing-non-negative-integers
bool parseHTMLNonNegativeInteger(const String&, unsigned&);
typedef Vector<pair<String, String> > HTMLAttributeList;
// The returned encoding might not be valid.
WTF::TextEncoding encodingFromMetaAttributes(const HTMLAttributeList&);
// Space characters as defined by the HTML specification.
template<typename CharType>
inline bool isHTMLSpace(CharType character)
{
// Histogram from Apple's page load test combined with some ad hoc browsing some other test suites.
//
// 82%: 216330 non-space characters, all > U+0020
// 11%: 30017 plain space characters, U+0020
// 5%: 12099 newline characters, U+000A
// 2%: 5346 tab characters, U+0009
//
// No other characters seen. No U+000C or U+000D, and no other control characters.
// Accordingly, we check for non-spaces first, then space, then newline, then tab, then the other characters.
return character <= ' ' && (character == ' ' || character == '\n' || character == '\t' || character == '\r' || character == '\f');
}
template<typename CharType>
inline bool isComma(CharType character)
{
return character == ',';
}
template<typename CharType>
inline bool isHTMLSpaceOrComma(CharType character)
{
return isComma(character) || isHTMLSpace(character);
}
inline bool isHTMLLineBreak(UChar character)
{
return character <= '\r' && (character == '\n' || character == '\r');
}
template<typename CharType>
inline bool isNotHTMLSpace(CharType character)
{
return !isHTMLSpace<CharType>(character);
}
bool threadSafeMatch(const QualifiedName&, const QualifiedName&);
bool threadSafeMatch(const String&, const QualifiedName&);
enum CharacterWidth {
Likely8Bit,
Force8Bit,
Force16Bit
};
String attemptStaticStringCreation(const LChar*, size_t);
String attemptStaticStringCreation(const UChar*, size_t, CharacterWidth);
template<size_t inlineCapacity>
inline static String attemptStaticStringCreation(const Vector<UChar, inlineCapacity>& vector, CharacterWidth width)
{
return attemptStaticStringCreation(vector.data(), vector.size(), width);
}
inline static String attemptStaticStringCreation(const String str)
{
if (!str.is8Bit())
return attemptStaticStringCreation(str.characters16(), str.length(), Force16Bit);
return attemptStaticStringCreation(str.characters8(), str.length());
}
}
#endif
|
