140 lines
4.7 KiB
C++
140 lines
4.7 KiB
C++
// © 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 */
|