125 lines
3.0 KiB
C
125 lines
3.0 KiB
C
/*
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*******************************************************************************
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*
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* Copyright (C) 2000, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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* file name: ucnvmbcs.h
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 2000jul07
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* created by: Markus W. Scherer
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*/
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#ifndef __UCNVMBCS_H__
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#define __UCNVMBCS_H__
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#include "unicode/utypes.h"
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/* MBCS converter data and state -------------------------------------------- */
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enum {
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MBCS_STATE_ILLEGAL,
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MBCS_STATE_CHANGE_ONLY,
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MBCS_STATE_UNASSIGNED,
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MBCS_STATE_FALLBACK_DIRECT_16,
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MBCS_STATE_FALLBACK_DIRECT_20,
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MBCS_STATE_VALID_DIRECT_16,
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MBCS_STATE_VALID_DIRECT_20,
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MBCS_STATE_VALID_16,
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MBCS_STATE_VALID_16_PAIR
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};
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enum {
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MBCS_OUTPUT_1,
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MBCS_OUTPUT_2,
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MBCS_OUTPUT_3,
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MBCS_OUTPUT_4,
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MBCS_OUTPUT_3_EUC=8,
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MBCS_OUTPUT_4_EUC
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};
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typedef struct {
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uint32_t offset;
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UChar32 codePoint;
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} _MBCSToUFallback;
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typedef struct UConverterMBCSTable {
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/* toUnicode */
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uint8_t countStates;
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uint32_t countToUFallbacks;
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const int32_t (*stateTable)/*[countStates]*/[256];
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const uint16_t *unicodeCodeUnits/*[countUnicodeResults]*/;
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const _MBCSToUFallback *toUFallbacks;
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/* fromUnicode */
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const uint16_t *fromUnicodeTable;
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const uint8_t *fromUnicodeBytes;
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uint8_t outputType;
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} UConverterMBCSTable;
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/*
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* MBCS data structure as part of a .cnv file:
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*
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* uint32_t [8]; -- 8 values:
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* 0 MBCS version in UVersionInfo format (1.0.0.0)
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* 1 countStates
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* 2 countToUFallbacks
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* 3 offsetToUCodeUnits (offsets are counted from the beginning of this header structure)
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* 4 offsetFromUTable
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* 5 offsetFromUBytes
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* 6 flags, bits:
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* 31.. 8 reserved
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* 7.. 0 outputType
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* 7 reserved
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*
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* stateTable[countStates][256];
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*
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* struct { (fallbacks are sorted by offset)
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* uint32_t offset;
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* UChar32 codePoint;
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* } toUFallbacks[countToUFallbacks];
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*
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* uint16_t unicodeCodeUnits[?]; (even number of units or padded)
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*
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* uint16_t fromUTable[0x440+?]; (32-bit-aligned)
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*
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* uint8_t fromUBytes[?];
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*/
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typedef struct {
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UVersionInfo version;
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uint32_t countStates,
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countToUFallbacks,
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offsetToUCodeUnits,
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offsetFromUTable,
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offsetFromUBytes,
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flags,
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reserved;
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} _MBCSHeader;
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struct UConverterSharedData;
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typedef struct UConverterSharedData UConverterSharedData;
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U_CFUNC UChar32
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_MBCSSimpleGetNextUChar(UConverterSharedData *sharedData,
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const char **pSource, const char *sourceLimit,
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UBool useFallback);
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U_CFUNC UBool
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_MBCSIsLeadByte(UConverterSharedData *sharedData, char byte);
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U_CFUNC int32_t
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_MBCSFromUChar32(UConverterSharedData *sharedData,
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UChar32 c, uint32_t *pValue,
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UBool useFallback);
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#endif
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