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ucnv_bld.h
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1999-11-12
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/*
*******************************************************************************
* *
* COPYRIGHT: *
* (C) Copyright International Business Machines Corporation, 1998 *
* Licensed Material - Program-Property of IBM - All Rights Reserved. *
* US Government Users Restricted Rights - Use, duplication, or disclosure *
* restricted by GSA ADP Schedule Contract with IBM Corp. *
* *
*******************************************************************************
*
*
*
* ucnv_bld.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_BLD_H
#define UCNV_BLD_H
#include "utypes.h"
#define UCNV_MAX_SUBCHAR_LEN 4
#define UCNV_ERROR_BUFFER_LENGTH 20
#ifndef UCMP16_H
typedef struct _CompactShortArray CompactShortArray;
#endif
#ifndef UCMP8_H
typedef struct _CompactByteArray CompactByteArray;
#endif
#define UCNV_IMPLEMENTED_CONVERSION_TYPES 9
/*Sentinel Value used to check the integrity of the binary data files */
#define UCNV_FILE_CHECK_MARKER 0xBEDA
#define UCNV_COPYRIGHT_STRING \
" * COPYRIGHT: *\n" \
" * (C) Copyright International Business Machines Corporation, 1999 *\n"
#define UCNV_COPYRIGHT_STRING_LENGTH 200
/*maximum length of the converter names */
#define UCNV_MAX_CONVERTER_NAME_LENGTH 60
#define UCNV_MAX_FULL_FILE_NAME_LENGTH (600+UCNV_MAX_CONVERTER_NAME_LENGTH)
/*Pointer to the aforementioned file */
#define UCNV_MAX_LINE_TEXT (UCNV_MAX_CONVERTER_NAME_LENGTH*400)
#define UCNV_SI 0x0F /*Shift in for EBDCDIC_STATEFUL and iso2022 states */
#define UCNV_SO 0x0E /*Shift out for EBDCDIC_STATEFUL and iso2022 states */
typedef enum {
UCNV_UNSUPPORTED_CONVERTER = -1,
UCNV_SBCS = 0,
UCNV_DBCS = 1,
UCNV_MBCS = 2,
UCNV_LATIN_1 = 3,
UCNV_UTF8 = 4,
UCNV_UTF16_BigEndian = 5,
UCNV_UTF16_LittleEndian = 6,
UCNV_EBCDIC_STATEFUL = 7,
UCNV_ISO_2022 = 8,
/** Number of converter types for which we have conversion routines. */
UCNV_NUMBER_OF_SUPPORTED_CONVERTER_TYPES = 9,
UCNV_JIS = 9,
UCNV_EUC = 10,
UCNV_GB = 11
} UConverterType;
typedef enum {
UCNV_UNKNOWN = -1,
UCNV_IBM = 0
} UConverterPlatform;
/*Table Node Definitions */
typedef struct
{
UChar toUnicode[256];
CompactByteArray *fromUnicode;
}
UConverterSBCSTable;
typedef struct
{
CompactShortArray *toUnicode;
CompactShortArray *fromUnicode;
}
UConverterDBCSTable;
typedef struct
{
bool_t starters[256];
CompactShortArray *toUnicode;
CompactShortArray *fromUnicode;
}
UConverterMBCSTable;
typedef union
{
UConverterSBCSTable sbcs;
UConverterDBCSTable dbcs;
UConverterMBCSTable mbcs;
}
UConverterTable;
/*Defines the struct of a UConverterSharedData the immutable, shared part of
*UConverter
*/
typedef struct
{
uint32_t referenceCounter; /*used to count number of clients */
char name[UCNV_MAX_CONVERTER_NAME_LENGTH]; /*internal name of the converter */
UConverterPlatform platform; /*platform of the converter (only IBM now) */
int32_t codepage; /*codepage # (now IBM-$codepage) */
UConverterType conversionType; /*conversion type */
int8_t minBytesPerChar; /*Minimum # bytes per char in this codepage */
int8_t maxBytesPerChar; /*Maximum # bytes per char in this codepage */
struct
{ /*initial values of some members of the mutable part of object */
uint32_t toUnicodeStatus;
int8_t subCharLen;
unsigned char subChar[UCNV_MAX_SUBCHAR_LEN];
}
defaultConverterValues;
UConverterTable *table; /*Pointer to conversion data */
}
UConverterSharedData;
/*Defines a UConverter, the lightweight mutable part the user sees */
U_CDECL_BEGIN /* We must declare the following as 'extern "C"' so that if ucnv
itself is compiled under C++, the linkage of the funcptrs will
work.
*/
struct UConverter
{
int32_t toUnicodeStatus; /*Used to internalize stream status information */
int32_t fromUnicodeStatus;
int8_t invalidCharLength;
int8_t invalidUCharLength;
int8_t pad;
int32_t mode;
int8_t subCharLen; /*length of the codepage specific character sequence */
unsigned char subChar[UCNV_MAX_SUBCHAR_LEN]; /*codepage specific character sequence */
UChar UCharErrorBuffer[UCNV_ERROR_BUFFER_LENGTH]; /*used to store unicode data meant for
*output stream by the Error function pointers
*/
unsigned char charErrorBuffer[UCNV_ERROR_BUFFER_LENGTH]; /*used to store codepage data meant for
* output stream by the Error function pointers
*/
int8_t UCharErrorBufferLength; /*used to indicate the number of valid UChars
*in charErrorBuffer
*/
int8_t charErrorBufferLength; /*used to indicate the number of valid bytes
*in charErrorBuffer
*/
UChar invalidUCharBuffer[3];
char invalidCharBuffer[UCNV_MAX_SUBCHAR_LEN];
/*Error function pointer called when conversion issues
*occur during a T_UConverter_fromUnicode call
*/
void (*fromUCharErrorBehaviour) (struct UConverter *,
char **,
const char *,
const UChar **,
const UChar *,
int32_t* offsets,
bool_t,
UErrorCode *);
/*Error function pointer called when conversion issues
*occur during a T_UConverter_toUnicode call
*/
void (*fromCharErrorBehaviour) (struct UConverter *,
UChar **,
const UChar *,
const char **,
const char *,
int32_t* offsets,
bool_t,
UErrorCode *);
UConverterSharedData *sharedData; /*Pointer to the shared immutable part of the
*converter object
*/
void *extraInfo; /*currently only used to point to a struct containing UConverter used by iso 2022
Could be used by clients writing their own call back function to
pass context to them
*/
};
U_CDECL_END /* end of UConverter */
typedef struct UConverter UConverter;
typedef struct
{
UConverter *currentConverter;
unsigned char escSeq2022[10];
int8_t escSeq2022Length;
}
UConverterDataISO2022;
#endif /* _UCNV_BLD */