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
|
/*
* Copyright (C) 2004, 2006 Apple Computer, Inc. All rights reserved.
* Copyright (C) 2006 Alexey Proskuryakov <ap@nypop.com>
*
* 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 COMPUTER, INC. ``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 COMPUTER, INC. OR
* 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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_TEXT_TEXT_CODEC_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_TEXT_TEXT_CODEC_H_
#include <memory>
#include "base/macros.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
#include "third_party/blink/renderer/platform/wtf/text/unicode.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace WTF {
class TextEncoding;
// Specifies what will happen when a character is encountered that is
// not encodable in the character set.
enum UnencodableHandling {
// Encodes the character as an XML entity. For example, U+06DE
// would be "۞" (0x6DE = 1758 in octal).
kEntitiesForUnencodables,
// Encodes the character as en entity as above, but escaped
// non-alphanumeric characters. This is used in URLs.
// For example, U+6DE would be "%26%231758%3B".
kURLEncodedEntitiesForUnencodables,
// Encodes the character as a CSS entity. For example U+06DE
// would be \06de. See: https://www.w3.org/TR/css-syntax-3/#escaping
kCSSEncodedEntitiesForUnencodables,
};
typedef char UnencodableReplacementArray[32];
enum FlushBehavior {
// More bytes are coming, don't flush the codec.
kDoNotFlush = 0,
// A fetch has hit EOF. Some codecs handle fetches differently, for compat
// reasons.
kFetchEOF,
// Do a full flush of the codec.
kDataEOF
};
static_assert(!kDoNotFlush, "DoNotFlush should be falsy");
static_assert(kFetchEOF, "FetchEOF should be truthy");
static_assert(kDataEOF, "DataEOF should be truthy");
class WTF_EXPORT TextCodec {
USING_FAST_MALLOC(TextCodec);
public:
TextCodec() = default;
virtual ~TextCodec();
String Decode(const char* str,
size_t length,
FlushBehavior flush = kDoNotFlush) {
bool ignored;
return Decode(str, length, flush, false, ignored);
}
virtual String Decode(const char*,
size_t length,
FlushBehavior,
bool stop_on_error,
bool& saw_error) = 0;
virtual CString Encode(const UChar*, size_t length, UnencodableHandling) = 0;
virtual CString Encode(const LChar*, size_t length, UnencodableHandling) = 0;
// Fills a null-terminated string representation of the given
// unencodable character into the given replacement buffer.
// The length of the string (not including the null) will be returned.
static int GetUnencodableReplacement(unsigned code_point,
UnencodableHandling,
UnencodableReplacementArray);
DISALLOW_COPY_AND_ASSIGN(TextCodec);
};
typedef void (*EncodingNameRegistrar)(const char* alias, const char* name);
typedef std::unique_ptr<TextCodec> (
*NewTextCodecFunction)(const TextEncoding&, const void* additional_data);
typedef void (*TextCodecRegistrar)(const char* name,
NewTextCodecFunction,
const void* additional_data);
} // namespace WTF
using WTF::TextCodec;
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_TEXT_TEXT_CODEC_H_
|
