1028 lines
39 KiB
C
1028 lines
39 KiB
C
/*
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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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* file name: ucnvhz.c
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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: 2000oct16
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* created by: Ram Viswanadha
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* 10/31/2000 Ram Implemented offsets logic function
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*
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*/
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#include "unicode/utypes.h"
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#include "cmemory.h"
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#include "ucmp16.h"
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#include "ucmp8.h"
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#include "unicode/ucnv_err.h"
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#include "ucnv_bld.h"
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#include "unicode/ucnv.h"
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#include "ucnv_cnv.h"
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#include "unicode/ustring.h"
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#include "cstring.h"
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#define UCNV_TILDE 0x7E /* ~ */
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#define UCNV_OPEN_BRACE 0x7B /* { */
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#define UCNV_CLOSE_BRACE 0x7D /* } */
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#define SB_ESCAPE "\x7E\x7D"
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#define DB_ESCAPE "\x7E\x7B"
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#define TEST_ERROR_CONDITION(args,myTargetIndex, mySourceIndex, isTargetUCharDBCS, myConverterData, err){ \
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if(*err ==U_BUFFER_OVERFLOW_ERROR){ \
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/*save the state and return */ \
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args->target += myTargetIndex; \
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args->source += mySourceIndex; \
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myConverterData->sourceIndex = 0; \
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myConverterData->targetIndex = 0; \
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args->converter->fromUnicodeStatus = isTargetUCharDBCS; \
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return; \
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} \
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}
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/*********** HZ Converter Protos ***********/
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static void _HZOpen(UConverter *cnv, const char *name, const char *locale, uint32_t *version,UErrorCode *errorCode);
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static void _HZClose(UConverter *converter);
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static void _HZReset(UConverter *converter);
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U_CFUNC void UConverter_toUnicode_HZ(UConverterToUnicodeArgs *args,
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UErrorCode *err);
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U_CFUNC void UConverter_toUnicode_HZ_OFFSETS_LOGIC (UConverterToUnicodeArgs *args,
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UErrorCode *err);
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U_CFUNC void UConverter_fromUnicode_HZ(UConverterFromUnicodeArgs *args,
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UErrorCode *err);
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U_CFUNC void UConverter_fromUnicode_HZ_OFFSETS_LOGIC (UConverterFromUnicodeArgs *args,
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UErrorCode *err);
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U_CFUNC UChar32 UConverter_getNextUChar_HZ (UConverterToUnicodeArgs *pArgs,
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UErrorCode *pErrorCode);
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static UConverterImpl _HZImpl={
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UCNV_HZ,
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NULL,
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NULL,
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_HZOpen,
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_HZClose,
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_HZReset,
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UConverter_toUnicode_HZ,
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UConverter_toUnicode_HZ_OFFSETS_LOGIC,
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UConverter_fromUnicode_HZ,
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UConverter_fromUnicode_HZ_OFFSETS_LOGIC,
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UConverter_getNextUChar_HZ,
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NULL
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};
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const UConverterStaticData _HZStaticData={
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sizeof(UConverterStaticData),
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"HZ",
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2023, UCNV_IBM, UCNV_HZ, 1, 4,
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{ 0x1a, 0, 0, 0 },1, FALSE, FALSE,
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{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0} /* reserved */
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};
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const UConverterSharedData _HZData={
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sizeof(UConverterSharedData), ~((uint32_t) 0),
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NULL, NULL, &_HZStaticData, FALSE, &_HZImpl,
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0
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};
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typedef struct{
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int32_t targetIndex;
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int32_t sourceIndex;
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UBool isEscapeAppended;
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UConverter* gbConverter;
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UBool isStateDBCS;
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UBool isTargetUCharDBCS;
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}UConverterDataHZ;
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static void _HZOpen(UConverter *cnv, const char *name,const char *locale,uint32_t *version, UErrorCode *errorCode){
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cnv->toUnicodeStatus = 0;
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cnv->fromUnicodeStatus= 0;
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cnv->mode=0;
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cnv->fromUSurrogateLead;
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cnv->extraInfo = uprv_malloc (sizeof (UConverterDataHZ));
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if(cnv->extraInfo != NULL){
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((UConverterDataHZ*)cnv->extraInfo)->gbConverter = ucnv_open("ibm-1386",errorCode);
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((UConverterDataHZ*)cnv->extraInfo)->isStateDBCS = FALSE;
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((UConverterDataHZ*)cnv->extraInfo)->isEscapeAppended = FALSE;
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((UConverterDataHZ*)cnv->extraInfo)->targetIndex = 0;
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((UConverterDataHZ*)cnv->extraInfo)->sourceIndex = 0;
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((UConverterDataHZ*)cnv->extraInfo)->isTargetUCharDBCS = FALSE;
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ucnv_setSubstChars(cnv,"\x7E\x7D\x1A", 3, errorCode);
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}
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}
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static void _HZClose(UConverter *cnv){
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ucnv_close (((UConverterDataHZ *) (cnv->extraInfo))->gbConverter);
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uprv_free(cnv->extraInfo);
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}
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static void _HZReset(UConverter *cnv){
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cnv->toUnicodeStatus = 0;
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cnv->fromUnicodeStatus= 0;
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cnv->mode=0;
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cnv->fromUSurrogateLead;
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if(cnv->extraInfo != NULL){
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((UConverterDataHZ*)cnv->extraInfo)->isStateDBCS = FALSE;
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((UConverterDataHZ*)cnv->extraInfo)->isEscapeAppended = FALSE;
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((UConverterDataHZ*)cnv->extraInfo)->targetIndex = 0;
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((UConverterDataHZ*)cnv->extraInfo)->sourceIndex = 0;
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((UConverterDataHZ*)cnv->extraInfo)->isTargetUCharDBCS = FALSE;
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}
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}
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/**************************************HZ Encoding*************************************************
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* Rules for HZ encoding
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*
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* In ASCII mode, a byte is interpreted as an ASCII character, unless a
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* '~' is encountered. The character '~' is an escape character. By
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* convention, it must be immediately followed ONLY by '~', '{' or '\n'
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* (<LF>), with the following special meaning.
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* 1. The escape sequence '~~' is interpreted as a '~'.
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* 2. The escape-to-GB sequence '~{' switches the mode from ASCII to GB.
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* 3. The escape sequence '~\n' is a line-continuation marker to be
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* consumed with no output produced.
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* In GB mode, characters are interpreted two bytes at a time as (pure)
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* GB codes until the escape-from-GB code '~}' is read. This code
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* switches the mode from GB back to ASCII. (Note that the escape-
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* from-GB code '~}' ($7E7D) is outside the defined GB range.)
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*
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* Source: RFC 1842
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*/
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U_CFUNC void UConverter_toUnicode_HZ(UConverterToUnicodeArgs *args,
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UErrorCode* err){
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char tempBuf[3];
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const char* pBuf;
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const char *mySource = ( char *) args->source;
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UChar *myTarget = args->target;
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char *tempLimit = &tempBuf[2]+1;
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int32_t mySourceIndex = 0;
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int32_t myTargetIndex = 0;
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const char *mySourceLimit = args->sourceLimit;
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UChar32 targetUniChar = 0x0000;
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UChar mySourceChar = 0x0000;
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UConverterDataHZ* myData=(UConverterDataHZ*)(args->converter->extraInfo);
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/*Arguments Check*/
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if (U_FAILURE(*err))
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return;
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if ((args->converter == NULL) || (args->targetLimit < args->target) || (args->sourceLimit < args->source)){
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*err = U_ILLEGAL_ARGUMENT_ERROR;
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return;
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}
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while(mySource< args->sourceLimit){
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if(myTarget < args->targetLimit){
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mySourceChar= (unsigned char) *mySource++;
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/*if( mySourceChar <= 0x20){
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myData->isStateDBCS = FALSE;
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}*/
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switch(mySourceChar){
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case 0x0A:
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if(args->converter->mode ==UCNV_TILDE){
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args->converter->mode=0;
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}
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*(myTarget++)=(UChar)mySourceChar;
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continue;
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case UCNV_TILDE:
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if(args->converter->mode ==UCNV_TILDE){
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*(myTarget++)=(UChar)mySourceChar;
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args->converter->mode=0;
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continue;
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}
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else if(args->converter->toUnicodeStatus !=0){
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args->converter->mode=0;
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break;
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}
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else{
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args->converter->mode = UCNV_TILDE;
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continue;
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}
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case UCNV_OPEN_BRACE:
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if(args->converter->mode == UCNV_TILDE){
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args->converter->mode=0;
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myData->isStateDBCS = TRUE;
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continue;
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}
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else{
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break;
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}
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case UCNV_CLOSE_BRACE:
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if(args->converter->mode == UCNV_TILDE){
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args->converter->mode=0;
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myData->isStateDBCS = FALSE;
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continue;
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}
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else{
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break;
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}
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default:
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/* if the first byte is equal to TILDE and the trail byte
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* is not a valid byte then it is an error condition
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*/
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if(args->converter->mode == UCNV_TILDE){
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args->converter->mode=0;
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mySourceChar= (UChar)(((UCNV_TILDE+0x80) << 8) | ((mySourceChar & 0x00ff)+0x80));
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goto SAVE_STATE;
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}
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break;
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}
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if(myData->isStateDBCS){
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if(args->converter->toUnicodeStatus == 0x00){
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args->converter->toUnicodeStatus = (UChar) mySourceChar;
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continue;
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}
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else{
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tempBuf[0] = (char) (args->converter->toUnicodeStatus +0x80);
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tempBuf[1] = (char) (mySourceChar+0x80);
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mySourceChar= (UChar)(((args->converter->toUnicodeStatus+0x80) << 8) | ((mySourceChar & 0x00ff)+0x80));
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args->converter->toUnicodeStatus =0x00;
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pBuf = &tempBuf[0];
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tempLimit = &tempBuf[2]+1;
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targetUniChar = _MBCSSimpleGetNextUChar(myData->gbConverter->sharedData,
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&pBuf,tempLimit,args->converter->useFallback);
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}
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}
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else{
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if(args->converter->fromUnicodeStatus == 0x00){
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tempBuf[0] = (char) mySourceChar;
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pBuf = &tempBuf[0];
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tempLimit = &tempBuf[1];
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targetUniChar = _MBCSSimpleGetNextUChar(myData->gbConverter->sharedData,
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&pBuf,tempLimit,args->converter->useFallback);
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}
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else{
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goto SAVE_STATE;
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}
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}
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if(targetUniChar < 0xfffe){
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*(myTarget++)=(UChar)targetUniChar;
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}
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else if(targetUniChar>=0xfffe){
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SAVE_STATE:
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{
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const char *saveSource = args->source;
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UChar *saveTarget = args->target;
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int32_t *saveOffsets = args->offsets;
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UConverterCallbackReason reason;
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if(targetUniChar == 0xfffe){
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reason = UCNV_UNASSIGNED;
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*err = U_INVALID_CHAR_FOUND;
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}
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else{
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reason = UCNV_ILLEGAL;
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*err = U_ILLEGAL_CHAR_FOUND;
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}
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if(myData->isStateDBCS){
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args->converter->invalidCharBuffer[args->converter->invalidCharLength++] = (char)(tempBuf[0]-0x80);
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args->converter->invalidCharBuffer[args->converter->invalidCharLength++] = (char)(tempBuf[1]-0x80);
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}
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else{
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args->converter->invalidCharBuffer[args->converter->invalidCharLength++] = (char)mySourceChar;
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}
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args->target = myTarget;
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args->source = mySource;
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ToU_CALLBACK_MACRO( args->converter->toUContext,
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args,
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args->converter->invalidCharBuffer,
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args->converter->invalidCharLength,
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reason,
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err);
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myTarget = args->target;
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args->source = saveSource;
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args->target = saveTarget;
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args->offsets = saveOffsets;
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args->converter->invalidCharLength=0;
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if(U_FAILURE(*err))
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break;
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}
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}
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}
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else{
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*err =U_BUFFER_OVERFLOW_ERROR;
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break;
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}
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}
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if((args->flush==TRUE)
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&& (mySource == mySourceLimit)
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&& ( args->converter->toUnicodeStatus !=0x00)){
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if(U_SUCCESS(*err)){
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*err = U_TRUNCATED_CHAR_FOUND;
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args->converter->toUnicodeStatus = 0x00;
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}
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}
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/* Reset the state of converter if we consumed
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* the source and flush is true
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*/
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if( (mySource == mySourceLimit) && args->flush){
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_HZReset(args->converter);
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}
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args->target = myTarget;
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args->source = mySource;
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}
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U_CFUNC void UConverter_toUnicode_HZ_OFFSETS_LOGIC(UConverterToUnicodeArgs *args,
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UErrorCode* err){
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char tempBuf[3];
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const char* pBuf;
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const char *mySource = ( char *) args->source;
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UChar *myTarget = args->target;
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char *tempLimit = &tempBuf[3];
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int32_t mySourceIndex = 0;
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int32_t myTargetIndex = 0;
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const char *mySourceLimit = args->sourceLimit;
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UChar32 targetUniChar = 0x0000;
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UChar mySourceChar = 0x0000;
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UConverterDataHZ* myData=(UConverterDataHZ*)(args->converter->extraInfo);
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/*Arguments Check*/
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if (U_FAILURE(*err))
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return;
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if ((args->converter == NULL) || (args->targetLimit < args->target) || (args->sourceLimit < args->source)){
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*err = U_ILLEGAL_ARGUMENT_ERROR;
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return;
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}
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while(mySource< args->sourceLimit){
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if(myTarget < args->targetLimit){
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mySourceChar= (unsigned char) *mySource++;
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|
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/*if( mySourceChar <= 0x20){
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myData->isStateDBCS = FALSE;
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}*/
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switch(mySourceChar){
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case 0x0A:
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if(args->converter->mode ==UCNV_TILDE){
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args->converter->mode=0;
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}
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*(myTarget++)=(UChar)mySourceChar;
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continue;
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case UCNV_TILDE:
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if(args->converter->mode ==UCNV_TILDE){
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*(myTarget++)=(UChar)mySourceChar;
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args->converter->mode=0;
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continue;
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}
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else if(args->converter->toUnicodeStatus !=0){
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args->converter->mode=0;
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break;
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}
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else{
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args->converter->mode = UCNV_TILDE;
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continue;
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}
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|
|
|
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case UCNV_OPEN_BRACE:
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if(args->converter->mode == UCNV_TILDE){
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args->converter->mode=0;
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myData->isStateDBCS = TRUE;
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continue;
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}
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else{
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break;
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}
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|
|
|
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case UCNV_CLOSE_BRACE:
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if(args->converter->mode == UCNV_TILDE){
|
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args->converter->mode=0;
|
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myData->isStateDBCS = FALSE;
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continue;
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}
|
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else{
|
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break;
|
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}
|
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|
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default:
|
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/* if the first byte is equal to TILDE and the trail byte
|
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* is not a valid byte then it is an error condition
|
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*/
|
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if(args->converter->mode == UCNV_TILDE){
|
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args->converter->mode=0;
|
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mySourceChar= (UChar)(((UCNV_TILDE+0x80) << 8) | ((mySourceChar & 0x00ff)+0x80));
|
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goto SAVE_STATE;
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}
|
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|
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break;
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|
|
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}
|
|
|
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if(myData->isStateDBCS){
|
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if(args->converter->toUnicodeStatus == 0x00){
|
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args->converter->toUnicodeStatus = (UChar) mySourceChar;
|
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continue;
|
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}
|
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else{
|
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tempBuf[0] = (char) (args->converter->toUnicodeStatus+0x80) ;
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tempBuf[1] = (char) (mySourceChar+0x80);
|
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mySourceChar= (UChar)(((args->converter->toUnicodeStatus+0x80) << 8) | ((mySourceChar & 0x00ff)+0x80));
|
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args->converter->toUnicodeStatus =0x00;
|
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pBuf = &tempBuf[0];
|
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tempLimit = &tempBuf[2]+1;
|
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targetUniChar = _MBCSSimpleGetNextUChar(myData->gbConverter->sharedData,
|
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&pBuf,tempLimit,args->converter->useFallback);
|
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}
|
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}
|
|
else{
|
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if(args->converter->fromUnicodeStatus == 0x00){
|
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tempBuf[0] = (char) mySourceChar;
|
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pBuf = &tempBuf[0];
|
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tempLimit = &tempBuf[1];
|
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targetUniChar = _MBCSSimpleGetNextUChar(myData->gbConverter->sharedData,
|
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&pBuf,tempLimit,args->converter->useFallback);
|
|
}
|
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else{
|
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goto SAVE_STATE;
|
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}
|
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|
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}
|
|
if(targetUniChar < 0xfffe){
|
|
if(myData->isStateDBCS){
|
|
args->offsets[myTarget - args->target]= mySource - args->source - 2;
|
|
}
|
|
else{
|
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args->offsets[myTarget - args->target]= mySource - args->source - 1;
|
|
}
|
|
*(myTarget++)=(UChar)targetUniChar;
|
|
}
|
|
else if(targetUniChar>=0xfffe){
|
|
SAVE_STATE:
|
|
{
|
|
const char *saveSource = args->source;
|
|
UChar *saveTarget = args->target;
|
|
int32_t *saveOffsets = args->offsets;
|
|
|
|
UConverterCallbackReason reason;
|
|
int32_t currentOffset ;
|
|
int32_t My_i = myTarget - args->target;
|
|
|
|
if(targetUniChar == 0xfffe){
|
|
reason = UCNV_UNASSIGNED;
|
|
*err = U_INVALID_CHAR_FOUND;
|
|
}
|
|
else{
|
|
reason = UCNV_ILLEGAL;
|
|
*err = U_ILLEGAL_CHAR_FOUND;
|
|
}
|
|
if(myData->isStateDBCS){
|
|
|
|
args->converter->invalidCharBuffer[args->converter->invalidCharLength++] = (char)(tempBuf[0]-0x80);
|
|
args->converter->invalidCharBuffer[args->converter->invalidCharLength++] = (char)(tempBuf[1]-0x80);
|
|
currentOffset= mySource - args->source -2;
|
|
|
|
}
|
|
else{
|
|
args->converter->invalidCharBuffer[args->converter->invalidCharLength++] = (char)mySourceChar;
|
|
currentOffset= mySource - args->source -1;
|
|
}
|
|
args->offsets = args->offsets?args->offsets+(myTarget - args->target):0;
|
|
args->target = myTarget;
|
|
args->source = mySource;
|
|
myTarget = saveTarget;
|
|
ToU_CALLBACK_OFFSETS_LOGIC_MACRO( args->converter->toUContext,
|
|
args,
|
|
args->converter->invalidCharBuffer,
|
|
args->converter->invalidCharLength,
|
|
reason,
|
|
err);
|
|
args->converter->invalidCharLength=0;
|
|
args->source = saveSource;
|
|
myTarget = args->target;
|
|
args->target = saveTarget;
|
|
args->offsets = saveOffsets;
|
|
if(U_FAILURE(*err))
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else{
|
|
*err =U_BUFFER_OVERFLOW_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
if((args->flush==TRUE)
|
|
&& (mySource == mySourceLimit)
|
|
&& ( args->converter->toUnicodeStatus !=0x00)){
|
|
if(U_SUCCESS(*err)){
|
|
*err = U_TRUNCATED_CHAR_FOUND;
|
|
args->converter->toUnicodeStatus = 0x00;
|
|
}
|
|
}
|
|
/* Reset the state of converter if we consumed
|
|
* the source and flush is true
|
|
*/
|
|
if( (mySource == mySourceLimit) && args->flush){
|
|
_HZReset(args->converter);
|
|
}
|
|
|
|
args->target = myTarget;
|
|
args->source = mySource;
|
|
}
|
|
|
|
static void concatEscape(UConverterFromUnicodeArgs* args, int32_t *targetIndex, int32_t *targetLength,
|
|
const char* strToAppend,UErrorCode* err,int len,int32_t *sourceIndex){
|
|
while(len-->0){
|
|
if(*targetIndex < *targetLength){
|
|
args->target[*targetIndex] = (unsigned char) *strToAppend;
|
|
if(args->offsets!=NULL){
|
|
args->offsets[*targetIndex] = *sourceIndex-1;
|
|
}
|
|
(*targetIndex)++;
|
|
}
|
|
else{
|
|
args->converter->charErrorBuffer[(int)args->converter->charErrorBufferLength++] = (unsigned char) *strToAppend;
|
|
*err =U_BUFFER_OVERFLOW_ERROR;
|
|
}
|
|
strToAppend++;
|
|
}
|
|
}
|
|
|
|
static void concatString(UConverterFromUnicodeArgs* args, int32_t *targetIndex, int32_t *targetLength,
|
|
const UChar32* strToAppend,UErrorCode* err, int32_t *sourceIndex){
|
|
|
|
if(*strToAppend < 0x00FF){
|
|
if( (*targetIndex)+1 >= *targetLength){
|
|
args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = (unsigned char) *strToAppend;
|
|
*err = U_BUFFER_OVERFLOW_ERROR;
|
|
}else{
|
|
args->target[*targetIndex] = (unsigned char) *strToAppend;
|
|
|
|
if(args->offsets!=NULL){
|
|
args->offsets[*targetIndex] = *sourceIndex-1;
|
|
}
|
|
(*targetIndex)++;
|
|
|
|
}
|
|
}
|
|
else{
|
|
if(*targetIndex < *targetLength){
|
|
args->target[*targetIndex] =(unsigned char) ((*strToAppend>>8)-0x80 );
|
|
if(args->offsets!=NULL){
|
|
args->offsets[*targetIndex] = *sourceIndex-1;
|
|
}
|
|
(*targetIndex)++;
|
|
|
|
if(*targetIndex < *targetLength){
|
|
args->target[(*targetIndex)] =(unsigned char) ((*strToAppend & 0x00FF)-0x80);
|
|
|
|
if(args->offsets!=NULL){
|
|
args->offsets[*targetIndex] = *sourceIndex-1;
|
|
}
|
|
(*targetIndex)++;
|
|
}
|
|
else{
|
|
args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = (unsigned char) ((*strToAppend & 0x00FF)-0x80);
|
|
*err = U_BUFFER_OVERFLOW_ERROR;
|
|
|
|
}
|
|
|
|
}
|
|
else{
|
|
args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = (unsigned char) ((*strToAppend>>8)-0x80);
|
|
args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = (unsigned char) ((*strToAppend & 0x00FF)-0x80);
|
|
*err = U_BUFFER_OVERFLOW_ERROR;
|
|
if(args->offsets!=NULL){
|
|
args->offsets[*targetIndex] = *sourceIndex-1;
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
U_CFUNC void UConverter_fromUnicode_HZ(UConverterFromUnicodeArgs *args, UErrorCode *err){
|
|
|
|
|
|
const UChar *mySource = args->source;
|
|
unsigned char *myTarget = (unsigned char *) args->target;
|
|
int32_t mySourceIndex = 0;
|
|
int32_t myTargetIndex = 0;
|
|
uint32_t targetValue=0;
|
|
int32_t targetLength = args->targetLimit - args->target;
|
|
int32_t sourceLength = args->sourceLimit - args->source;
|
|
int32_t length=0;
|
|
UChar32 targetUniChar = 0x0000;
|
|
UChar32 mySourceChar = 0x0000,c=0x0000;
|
|
UConverterDataHZ *myConverterData=(UConverterDataHZ*)args->converter->extraInfo;
|
|
UBool isTargetUCharDBCS = (UBool) myConverterData->isTargetUCharDBCS;
|
|
UBool oldIsTargetUCharDBCS = isTargetUCharDBCS;
|
|
UConverterCallbackReason reason;
|
|
UBool isEscapeAppended =FALSE;
|
|
|
|
/*Arguments Check*/
|
|
if (U_FAILURE(*err))
|
|
return;
|
|
|
|
if ((args->converter == NULL) || (args->targetLimit < args->target) || (args->sourceLimit < args->source)){
|
|
*err = U_ILLEGAL_ARGUMENT_ERROR;
|
|
return;
|
|
}
|
|
if(args->converter->fromUSurrogateLead!=0 && myTargetIndex < targetLength) {
|
|
goto getTrail;
|
|
}
|
|
/*writing the char to the output stream */
|
|
while (mySourceIndex < sourceLength){
|
|
|
|
if (myTargetIndex < targetLength){
|
|
|
|
c=mySourceChar = (UChar) args->source[mySourceIndex++];
|
|
|
|
/*Handle surrogates */
|
|
if(UTF_IS_SURROGATE(mySourceChar)) {
|
|
if(UTF_IS_SURROGATE_FIRST(mySourceChar)) {
|
|
args->converter->fromUSurrogateLead = (UChar)mySourceChar;
|
|
getTrail:
|
|
/*look ahead to find the trail surrogate*/
|
|
if(mySourceIndex < sourceLength) {
|
|
/* test the following code unit */
|
|
UChar trail=(UChar) args->source[mySourceIndex];
|
|
if(UTF_IS_SECOND_SURROGATE(trail)) {
|
|
++mySourceIndex;
|
|
mySourceChar=UTF16_GET_PAIR_VALUE(mySourceChar, trail);
|
|
args->converter->fromUSurrogateLead = 0x00;
|
|
/* convert this surrogate code point */
|
|
/* exit this condition tree */
|
|
} else {
|
|
/* this is an unmatched lead code unit (1st surrogate) */
|
|
/* callback(illegal) */
|
|
reason=UCNV_ILLEGAL;
|
|
*err=U_ILLEGAL_CHAR_FOUND;
|
|
goto CALLBACK;
|
|
}
|
|
} else {
|
|
/* no more input */
|
|
break;
|
|
}
|
|
} else {
|
|
/* this is an unmatched trail code unit (2nd surrogate) */
|
|
/* callback(illegal) */
|
|
reason=UCNV_ILLEGAL;
|
|
*err=U_ILLEGAL_CHAR_FOUND;
|
|
goto CALLBACK;
|
|
}
|
|
}
|
|
oldIsTargetUCharDBCS = isTargetUCharDBCS;
|
|
if(mySourceChar == 0x7E){
|
|
concatEscape(args, &myTargetIndex, &targetLength,"\x7E\x7E",err,2,&mySourceIndex);
|
|
continue;
|
|
}
|
|
else{
|
|
length= _MBCSFromUChar32(myConverterData->gbConverter->sharedData,
|
|
mySourceChar,&targetValue,args->converter->useFallback);
|
|
targetUniChar = (UChar32) targetValue;
|
|
|
|
}
|
|
/* only DBCS or SBCS characters are expected*/
|
|
if(length > 2 || length==0){
|
|
reason =UCNV_ILLEGAL;
|
|
*err =U_INVALID_CHAR_FOUND;
|
|
goto CALLBACK;
|
|
}
|
|
/* DB haracters with high bit set to 1 are expected */
|
|
if(((targetUniChar & 0x8080) != 0x8080)&& length==2){
|
|
reason =UCNV_ILLEGAL;
|
|
*err =U_INVALID_CHAR_FOUND;
|
|
goto CALLBACK;
|
|
}
|
|
|
|
myConverterData->isTargetUCharDBCS = isTargetUCharDBCS = (UBool)(targetUniChar>0x00FF);
|
|
|
|
if (targetUniChar != missingCharMarker){
|
|
|
|
if(oldIsTargetUCharDBCS != isTargetUCharDBCS || !myConverterData->isEscapeAppended ){
|
|
/*Shifting from a double byte to single byte mode*/
|
|
if(!isTargetUCharDBCS){
|
|
concatEscape(args, &myTargetIndex, &targetLength, SB_ESCAPE,err, 2,&mySourceIndex);
|
|
myConverterData->isEscapeAppended =isEscapeAppended =TRUE;
|
|
}
|
|
else{ /* Shifting from a single byte to double byte mode*/
|
|
concatEscape(args, &myTargetIndex, &targetLength, DB_ESCAPE,err, 2,&mySourceIndex);
|
|
myConverterData->isEscapeAppended =isEscapeAppended =TRUE;
|
|
|
|
}
|
|
}
|
|
|
|
concatString(args, &myTargetIndex, &targetLength,&targetUniChar,err, &mySourceIndex);
|
|
|
|
TEST_ERROR_CONDITION(args,myTargetIndex, mySourceIndex, isTargetUCharDBCS,myConverterData, err);
|
|
}
|
|
else{
|
|
|
|
CALLBACK:
|
|
{
|
|
const UChar* saveSource = args->source;
|
|
char* saveTarget = args->target;
|
|
int32_t *saveOffsets = args->offsets;
|
|
*err = U_INVALID_CHAR_FOUND;
|
|
args->converter->invalidUCharBuffer[0] = (UChar) mySourceChar;
|
|
args->converter->invalidUCharLength = 1;
|
|
|
|
myConverterData->isTargetUCharDBCS = isTargetUCharDBCS;
|
|
args->target += myTargetIndex;
|
|
args->source += mySourceIndex;
|
|
FromU_CALLBACK_MACRO(args->converter->fromUContext,
|
|
args,
|
|
args->converter->invalidUCharBuffer,
|
|
1,
|
|
(UChar32) mySourceChar,
|
|
UCNV_UNASSIGNED,
|
|
err);
|
|
args->source = saveSource;
|
|
args->target = saveTarget;
|
|
args->offsets = saveOffsets;
|
|
isTargetUCharDBCS=(UBool)myConverterData->isTargetUCharDBCS;
|
|
args->converter->fromUSurrogateLead =0x00;
|
|
myConverterData->isEscapeAppended =isEscapeAppended =FALSE;
|
|
args->converter->invalidUCharLength = 0;
|
|
if (U_FAILURE (*err))
|
|
break;
|
|
|
|
}
|
|
}
|
|
}
|
|
else{
|
|
*err = U_BUFFER_OVERFLOW_ERROR;
|
|
break;
|
|
}
|
|
targetUniChar=missingCharMarker;
|
|
}
|
|
/*If at the end of conversion we are still carrying state information
|
|
*flush is TRUE, we can deduce that the input stream is truncated
|
|
*/
|
|
if (args->converter->fromUSurrogateLead !=0 && (mySourceIndex == sourceLength) && args->flush){
|
|
if (U_SUCCESS(*err)){
|
|
*err = U_TRUNCATED_CHAR_FOUND;
|
|
args->converter->toUnicodeStatus = 0x00;
|
|
}
|
|
}
|
|
/* Reset the state of converter if we consumed
|
|
* the source and flush is true
|
|
*/
|
|
if( (mySourceIndex == sourceLength) && args->flush){
|
|
_HZReset(args->converter);
|
|
}
|
|
|
|
args->target += myTargetIndex;
|
|
args->source += mySourceIndex;
|
|
myConverterData->isTargetUCharDBCS = isTargetUCharDBCS;
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
U_CFUNC void UConverter_fromUnicode_HZ_OFFSETS_LOGIC (UConverterFromUnicodeArgs * args,
|
|
UErrorCode * err){
|
|
const UChar *mySource = args->source;
|
|
unsigned char *myTarget = (unsigned char *) args->target;
|
|
int32_t mySourceIndex = 0;
|
|
int32_t myTargetIndex = 0;
|
|
int32_t targetLength = args->targetLimit - args->target;
|
|
int32_t sourceLength = args->sourceLimit - args->source;
|
|
int32_t length=0;
|
|
UChar32 targetUniChar = 0x0000;
|
|
UChar32 mySourceChar = 0x0000,c=0x0000;
|
|
UConverterDataHZ *myConverterData=(UConverterDataHZ*)args->converter->extraInfo;
|
|
UBool isTargetUCharDBCS = (UBool) myConverterData->isTargetUCharDBCS;
|
|
UBool oldIsTargetUCharDBCS = isTargetUCharDBCS;
|
|
UConverterCallbackReason reason;
|
|
UBool isEscapeAppended =FALSE;
|
|
|
|
/*Arguments Check*/
|
|
if (U_FAILURE(*err))
|
|
return;
|
|
|
|
if ((args->converter == NULL) || (args->targetLimit < args->target) || (args->sourceLimit < args->source)){
|
|
*err = U_ILLEGAL_ARGUMENT_ERROR;
|
|
return;
|
|
}
|
|
if(args->converter->fromUSurrogateLead!=0 && myTargetIndex < targetLength) {
|
|
goto getTrail;
|
|
}
|
|
/*writing the char to the output stream */
|
|
while (mySourceIndex < sourceLength){
|
|
|
|
if (myTargetIndex < targetLength){
|
|
|
|
c=mySourceChar = (UChar) args->source[mySourceIndex++];
|
|
|
|
/*Handle surrogates */
|
|
if(UTF_IS_SURROGATE(mySourceChar)) {
|
|
if(UTF_IS_SURROGATE_FIRST(mySourceChar)) {
|
|
args->converter->fromUSurrogateLead = (UChar) mySourceChar;
|
|
getTrail:
|
|
/*look ahead to find the trail surrogate*/
|
|
if(mySourceIndex < sourceLength) {
|
|
/* test the following code unit */
|
|
UChar trail=(UChar) args->source[mySourceIndex];
|
|
if(UTF_IS_SECOND_SURROGATE(trail)) {
|
|
++mySourceIndex;
|
|
mySourceChar=UTF16_GET_PAIR_VALUE(mySourceChar, trail);
|
|
args->converter->fromUSurrogateLead = 0x00;
|
|
/* convert this surrogate code point */
|
|
/* exit this condition tree */
|
|
} else {
|
|
/* this is an unmatched lead code unit (1st surrogate) */
|
|
/* callback(illegal) */
|
|
reason=UCNV_ILLEGAL;
|
|
*err=U_ILLEGAL_CHAR_FOUND;
|
|
goto CALLBACK;
|
|
}
|
|
} else {
|
|
/* no more input */
|
|
break;
|
|
}
|
|
} else {
|
|
/* this is an unmatched trail code unit (2nd surrogate) */
|
|
/* callback(illegal) */
|
|
reason=UCNV_ILLEGAL;
|
|
*err=U_ILLEGAL_CHAR_FOUND;
|
|
goto CALLBACK;
|
|
}
|
|
}
|
|
oldIsTargetUCharDBCS = isTargetUCharDBCS;
|
|
if(mySourceChar == 0x7E){
|
|
concatEscape(args, &myTargetIndex, &targetLength,"\x7E\x7E",err,2,&mySourceIndex);
|
|
continue;
|
|
}
|
|
else{
|
|
length= _MBCSFromUChar32(myConverterData->gbConverter->sharedData,
|
|
mySourceChar,&targetUniChar,args->converter->useFallback);
|
|
|
|
}
|
|
/* only DBCS or SBCS characters are expected*/
|
|
if(length > 2 || length==0){
|
|
reason =UCNV_ILLEGAL;
|
|
*err =U_INVALID_CHAR_FOUND;
|
|
goto CALLBACK;
|
|
}
|
|
/* DB haracters with high bit set to 1 are expected */
|
|
if(((targetUniChar & 0x8080) != 0x8080)&& length==2){
|
|
reason =UCNV_ILLEGAL;
|
|
*err =U_INVALID_CHAR_FOUND;
|
|
goto CALLBACK;
|
|
}
|
|
|
|
myConverterData->isTargetUCharDBCS = isTargetUCharDBCS = (UBool)(targetUniChar>0x00FF);
|
|
|
|
if (targetUniChar != missingCharMarker){
|
|
|
|
if(oldIsTargetUCharDBCS != isTargetUCharDBCS || !myConverterData->isEscapeAppended ){
|
|
/*Shifting from a double byte to single byte mode*/
|
|
if(!isTargetUCharDBCS){
|
|
concatEscape(args, &myTargetIndex, &targetLength, SB_ESCAPE,err, 2,&mySourceIndex);
|
|
myConverterData->isEscapeAppended =isEscapeAppended =TRUE;
|
|
}
|
|
else{ /* Shifting from a single byte to double byte mode*/
|
|
concatEscape(args, &myTargetIndex, &targetLength, DB_ESCAPE,err, 2,&mySourceIndex);
|
|
myConverterData->isEscapeAppended =isEscapeAppended =TRUE;
|
|
|
|
}
|
|
}
|
|
|
|
concatString(args, &myTargetIndex, &targetLength,&targetUniChar,err, &mySourceIndex);
|
|
|
|
TEST_ERROR_CONDITION(args,myTargetIndex, mySourceIndex, isTargetUCharDBCS,myConverterData, err);
|
|
}
|
|
else{
|
|
|
|
CALLBACK:
|
|
{
|
|
int32_t currentOffset = args->offsets[myTargetIndex-1]+1;
|
|
char * saveTarget = args->target;
|
|
const UChar* saveSource = args->source;
|
|
int32_t *saveOffsets = args->offsets;
|
|
*err = U_INVALID_CHAR_FOUND;
|
|
args->converter->invalidUCharBuffer[0] = (UChar) mySourceChar;
|
|
args->converter->invalidUCharLength = 1;
|
|
|
|
/* Breaks out of the loop since behaviour was set to stop */
|
|
args->converter->fromUnicodeStatus = (int32_t)isTargetUCharDBCS;
|
|
args->target += myTargetIndex;
|
|
args->source += mySourceIndex;
|
|
args->offsets = args->offsets?args->offsets+myTargetIndex:0;
|
|
FromU_CALLBACK_OFFSETS_LOGIC_MACRO(args->converter->fromUContext,
|
|
args,
|
|
args->converter->invalidUCharBuffer,
|
|
1,
|
|
(UChar32)mySourceChar,
|
|
UCNV_UNASSIGNED,
|
|
err);
|
|
args->source = saveSource;
|
|
args->target = saveTarget;
|
|
args->offsets = saveOffsets;
|
|
isTargetUCharDBCS=(UBool)myConverterData->isTargetUCharDBCS;
|
|
args->converter->fromUSurrogateLead =0x00;
|
|
myConverterData->isEscapeAppended =isEscapeAppended =FALSE;
|
|
args->converter->invalidUCharLength = 0;
|
|
if (U_FAILURE (*err))
|
|
break;
|
|
|
|
}
|
|
}
|
|
}
|
|
else{
|
|
*err = U_BUFFER_OVERFLOW_ERROR;
|
|
break;
|
|
}
|
|
targetUniChar=missingCharMarker;
|
|
}
|
|
/*If at the end of conversion we are still carrying state information
|
|
*flush is TRUE, we can deduce that the input stream is truncated
|
|
*/
|
|
if (args->converter->fromUSurrogateLead !=0 && (mySourceIndex == sourceLength) && args->flush){
|
|
if (U_SUCCESS(*err)){
|
|
*err = U_TRUNCATED_CHAR_FOUND;
|
|
args->converter->toUnicodeStatus = 0x00;
|
|
}
|
|
}
|
|
/* Reset the state of converter if we consumed
|
|
* the source and flush is true
|
|
*/
|
|
if( (mySourceIndex == sourceLength) && args->flush){
|
|
_HZReset(args->converter);
|
|
}
|
|
|
|
args->target += myTargetIndex;
|
|
args->source += mySourceIndex;
|
|
myConverterData->isTargetUCharDBCS = isTargetUCharDBCS;
|
|
|
|
return;
|
|
}
|
|
|
|
U_CFUNC UChar32 UConverter_getNextUChar_HZ (UConverterToUnicodeArgs * pArgs,
|
|
UErrorCode *pErrorCode){
|
|
UChar buffer[UTF_MAX_CHAR_LENGTH];
|
|
const char *realLimit=pArgs->sourceLimit;
|
|
|
|
pArgs->target=buffer;
|
|
pArgs->targetLimit=buffer+UTF_MAX_CHAR_LENGTH;
|
|
|
|
while(pArgs->source<realLimit) {
|
|
/* feed in one byte at a time to make sure to get only one character out */
|
|
pArgs->sourceLimit=pArgs->source+1;
|
|
pArgs->flush= (UBool)(pArgs->sourceLimit==realLimit);
|
|
UConverter_toUnicode_HZ(pArgs, pErrorCode);
|
|
if(U_FAILURE(*pErrorCode) && *pErrorCode!=U_BUFFER_OVERFLOW_ERROR) {
|
|
return 0xffff;
|
|
} else if(pArgs->target!=buffer) {
|
|
if(*pErrorCode==U_BUFFER_OVERFLOW_ERROR) {
|
|
*pErrorCode=U_ZERO_ERROR;
|
|
}
|
|
return ucnv_getUChar32KeepOverflow(pArgs->converter, buffer, pArgs->target-buffer);
|
|
}
|
|
}
|
|
|
|
/* no output because of empty input or only state changes and skipping callbacks */
|
|
*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0xffff;
|
|
}
|