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
|
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
**********************************************************************
* Copyright (C) 1999-2011, International Business Machines
* Corporation and others. All Rights Reserved.
**********************************************************************
*
*
* ucnv_imp.h:
* Contains all internal and external data structure definitions
* Created & Maitained by Bertrand A. Damiba
*
*
*
* ATTENTION:
* ---------
* Although the data structures in this file are open and stack allocatable
* we reserve the right to hide them in further releases.
*/
#ifndef UCNV_IMP_H
#define UCNV_IMP_H
#include "unicode/utypes.h"
#if !UCONFIG_NO_CONVERSION
#include "unicode/uloc.h"
#include "ucnv_bld.h"
/*
* Fast check for whether a charset name is "UTF-8".
* This does not recognize all of the variations that ucnv_open()
* and other functions recognize, but it covers most cases.
* @param name const char * charset name
* @return
*/
#define UCNV_FAST_IS_UTF8(name) \
(((name[0]=='U' ? \
( name[1]=='T' && name[2]=='F') : \
(name[0]=='u' && name[1]=='t' && name[2]=='f'))) \
&& (name[3]=='-' ? \
(name[4]=='8' && name[5]==0) : \
(name[3]=='8' && name[4]==0)))
typedef struct {
char cnvName[UCNV_MAX_CONVERTER_NAME_LENGTH];
char locale[ULOC_FULLNAME_CAPACITY];
uint32_t options;
} UConverterNamePieces;
U_CFUNC UBool
ucnv_canCreateConverter(const char *converterName, UErrorCode *err);
/* figures out if we need to go to file to read in the data tables.
* @param converterName The name of the converter
* @param err The error code
* @return the newly created converter
*/
U_CAPI UConverter *
ucnv_createConverter(UConverter *myUConverter, const char *converterName, UErrorCode * err);
/*
* Open a purely algorithmic converter, specified by a type constant.
* @param myUConverter NULL, or pre-allocated UConverter structure to avoid
* a memory allocation
* @param type requested converter type
* @param locale locale parameter, or ""
* @param options converter options bit set (default 0)
* @param err ICU error code, not tested for U_FAILURE on input
* because this is an internal function
* @internal
*/
U_CFUNC UConverter *
ucnv_createAlgorithmicConverter(UConverter *myUConverter,
UConverterType type,
const char *locale, uint32_t options,
UErrorCode *err);
/*
* Creates a converter from shared data.
* Adopts mySharedConverterData: No matter what happens, the caller must not
* unload mySharedConverterData, except via ucnv_close(return value)
* if this function is successful.
*/
U_CFUNC UConverter *
ucnv_createConverterFromSharedData(UConverter *myUConverter,
UConverterSharedData *mySharedConverterData,
UConverterLoadArgs *pArgs,
UErrorCode *err);
U_CFUNC UConverter *
ucnv_createConverterFromPackage(const char *packageName, const char *converterName, UErrorCode *err);
/**
* Load a converter but do not create a UConverter object.
* Simply return the UConverterSharedData.
* Performs alias lookup etc.
* The UConverterNamePieces need not be initialized
* before calling this function.
* The UConverterLoadArgs must be initialized
* before calling this function.
* If the args are passed in, then the pieces must be passed in too.
* In other words, the following combinations are allowed:
* - pieces==NULL && args==NULL
* - pieces!=NULL && args==NULL
* - pieces!=NULL && args!=NULL
* @internal
*/
U_CFUNC UConverterSharedData *
ucnv_loadSharedData(const char *converterName,
UConverterNamePieces *pieces,
UConverterLoadArgs *pArgs,
UErrorCode * err);
/**
* This may unload the shared data in a thread safe manner.
* This will only unload the data if no other converters are sharing it.
*/
U_CFUNC void
ucnv_unloadSharedDataIfReady(UConverterSharedData *sharedData);
/**
* This is a thread safe way to increment the reference count.
*/
U_CFUNC void
ucnv_incrementRefCount(UConverterSharedData *sharedData);
/**
* These are the default error handling callbacks for the charset conversion framework.
* For performance reasons, they are only called to handle an error (not normally called for a reset or close).
*/
#define UCNV_TO_U_DEFAULT_CALLBACK ((UConverterToUCallback) UCNV_TO_U_CALLBACK_SUBSTITUTE)
#define UCNV_FROM_U_DEFAULT_CALLBACK ((UConverterFromUCallback) UCNV_FROM_U_CALLBACK_SUBSTITUTE)
#endif
#endif /* _UCNV_IMP */
|
