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
|
//
// UTF16Encoding.h
//
// Library: Foundation
// Package: Text
// Module: UTF16Encoding
//
// Definition of the UTF16Encoding class.
//
// Copyright (c) 2004-2007, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Foundation_UTF16Encoding_INCLUDED
#define Foundation_UTF16Encoding_INCLUDED
#include "Poco/Foundation.h"
#include "Poco/TextEncoding.h"
namespace Poco {
class Foundation_API UTF16Encoding: public TextEncoding
/// UTF-16 text encoding, as defined in RFC 2781.
///
/// When converting from UTF-16 to Unicode, surrogates are
/// reported as they are - in other words, surrogate pairs
/// are not combined into one Unicode character.
/// When converting from Unicode to UTF-16, however, characters
/// outside the 16-bit range are converted into a low and
/// high surrogate.
{
public:
enum ByteOrderType
{
BIG_ENDIAN_BYTE_ORDER,
LITTLE_ENDIAN_BYTE_ORDER,
NATIVE_BYTE_ORDER
};
UTF16Encoding(ByteOrderType byteOrder = NATIVE_BYTE_ORDER);
/// Creates and initializes the encoding for the given byte order.
UTF16Encoding(int byteOrderMark);
/// Creates and initializes the encoding for the byte-order
/// indicated by the given byte-order mark, which is the Unicode
/// character 0xFEFF.
~UTF16Encoding();
ByteOrderType getByteOrder() const;
/// Returns the byte-order currently in use.
void setByteOrder(ByteOrderType byteOrder);
/// Sets the byte order.
void setByteOrder(int byteOrderMark);
/// Sets the byte order according to the given
/// byte order mark, which is the Unicode
/// character 0xFEFF.
const char* canonicalName() const;
bool isA(const std::string& encodingName) const;
const CharacterMap& characterMap() const;
int convert(const unsigned char* bytes) const;
int convert(int ch, unsigned char* bytes, int length) const;
int queryConvert(const unsigned char* bytes, int length) const;
int sequenceLength(const unsigned char* bytes, int length) const;
private:
bool _flipBytes;
static const char* _names[];
static const CharacterMap _charMap;
};
} // namespace Poco
#endif // Foundation_UTF16Encoding_INCLUDED
|
