| /* |
| ********************************************************************** |
| * Copyright (C) 2000, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| ********************************************************************** |
| * file name: ucnvsbcs.cpp |
| * encoding: US-ASCII |
| * tab size: 8 (not used) |
| * indentation:4 |
| * |
| * created on: 2000feb03 |
| * created by: Markus W. Scherer |
| * |
| * Change history: |
| * |
| * 05/09/00 helena Added implementation to handle fallback mappings. |
| */ |
| |
| #include "unicode/utypes.h" |
| #include "cmemory.h" |
| #include "ucmp16.h" |
| #include "ucmp8.h" |
| #include "unicode/ucnv_bld.h" |
| #include "unicode/ucnv.h" |
| #include "ucnv_cnv.h" |
| |
| /* SBCS --------------------------------------------------------------------- */ |
| |
| static void |
| _SBCSLoad(UConverterSharedData *sharedData, const uint8_t *raw, UErrorCode *pErrorCode) { |
| const uint8_t *oldraw = raw; |
| sharedData->table->sbcs.toUnicode = (uint16_t*)raw; |
| raw += sizeof(uint16_t)*256; oldraw = raw; |
| ucmp8_initFromData(&sharedData->table->sbcs.fromUnicode, &raw, pErrorCode); |
| if (sharedData->staticData->hasFromUnicodeFallback == TRUE) |
| { |
| if(((raw-oldraw)&3)!=0) { |
| raw+=4-((raw-oldraw)&3); /* pad to 4 */ |
| } |
| ucmp8_initFromData(&sharedData->table->sbcs.fromUnicodeFallback, &raw, pErrorCode); |
| } |
| if (sharedData->staticData->hasToUnicodeFallback == TRUE) |
| { |
| if(((raw-oldraw)&3)!=0) { |
| raw+=4-((raw-oldraw)&3); /* pad to 4 */ |
| } |
| sharedData->table->sbcs.toUnicodeFallback = (uint16_t*)raw; |
| } |
| } |
| |
| static void |
| _SBCSUnload(UConverterSharedData *sharedData) { |
| ucmp8_close (&sharedData->table->sbcs.fromUnicode); |
| if (sharedData->staticData->hasFromUnicodeFallback == TRUE) |
| ucmp8_close (&sharedData->table->sbcs.fromUnicodeFallback); |
| uprv_free (sharedData->table); |
| } |
| |
| void T_UConverter_toUnicode_SBCS (UConverter * _this, |
| UChar ** target, |
| const UChar * targetLimit, |
| const char **source, |
| const char *sourceLimit, |
| int32_t *offsets, |
| UBool flush, |
| UErrorCode * err) |
| { |
| char *mySource = (char *) *source; |
| UChar *myTarget = *target; |
| int32_t mySourceIndex = 0; |
| int32_t myTargetIndex = 0; |
| int32_t targetLength = targetLimit - myTarget; |
| int32_t sourceLength = sourceLimit - (char *) mySource; |
| UChar *myToUnicode = NULL, *myToUnicodeFallback = NULL; |
| UChar targetUniChar = 0x0000; |
| |
| myToUnicode = _this->sharedData->table->sbcs.toUnicode; |
| myToUnicodeFallback = _this->sharedData->table->sbcs.toUnicodeFallback; |
| while (mySourceIndex < sourceLength) |
| { |
| |
| /*writing the UniChar to the output stream */ |
| if (myTargetIndex < targetLength) |
| { |
| /*gets the corresponding UniChar */ |
| targetUniChar = myToUnicode[(unsigned char) mySource[mySourceIndex++]]; |
| |
| if (targetUniChar != missingUCharMarker) |
| { |
| /* writes the UniChar to the output stream */ |
| myTarget[myTargetIndex++] = targetUniChar; |
| } |
| else |
| { |
| if ((_this->useFallback == TRUE) && |
| (_this->sharedData->staticData->hasToUnicodeFallback == TRUE)) |
| { |
| /* Look up in the fallback table first */ |
| targetUniChar = myToUnicodeFallback[(unsigned char) mySource[mySourceIndex-1]]; |
| if (targetUniChar != missingUCharMarker) |
| { |
| myTarget[myTargetIndex++] = targetUniChar; |
| } |
| } |
| if (targetUniChar == missingUCharMarker) |
| { |
| *err = U_INVALID_CHAR_FOUND; |
| _this->invalidCharBuffer[0] = (char) mySource[mySourceIndex - 1]; |
| _this->invalidCharLength = 1; |
| |
| ToU_CALLBACK_MACRO(_this, |
| myTarget, |
| myTargetIndex, |
| targetLimit, |
| mySource, |
| mySourceIndex, |
| sourceLimit, |
| offsets, |
| flush, |
| err); |
| |
| if (U_FAILURE (*err)) break; |
| _this->invalidCharLength = 0; |
| } |
| } |
| } |
| else |
| { |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| break; |
| } |
| } |
| |
| *target += myTargetIndex; |
| *source += mySourceIndex; |
| |
| return; |
| } |
| |
| void T_UConverter_fromUnicode_SBCS (UConverter * _this, |
| char **target, |
| const char *targetLimit, |
| const UChar ** source, |
| const UChar * sourceLimit, |
| int32_t *offsets, |
| UBool flush, |
| UErrorCode * err) |
| { |
| const UChar *mySource = *source; |
| unsigned char *myTarget = (unsigned char *) *target; |
| int32_t mySourceIndex = 0; |
| int32_t myTargetIndex = 0; |
| int32_t targetLength = targetLimit - (char *) myTarget; |
| int32_t sourceLength = sourceLimit - mySource; |
| CompactByteArray *myFromUnicode = NULL, *myFromUnicodeFallback = NULL; |
| unsigned char targetChar = 0x00; |
| |
| myFromUnicode = &_this->sharedData->table->sbcs.fromUnicode; |
| myFromUnicodeFallback = &_this->sharedData->table->sbcs.fromUnicodeFallback; |
| |
| /*writing the char to the output stream */ |
| while (mySourceIndex < sourceLength) |
| { |
| targetChar = ucmp8_getu (myFromUnicode, mySource[mySourceIndex]); |
| |
| if (myTargetIndex < targetLength) |
| { |
| mySourceIndex++; |
| if (targetChar != 0 || !mySource[mySourceIndex - 1]) |
| { |
| /*writes the char to the output stream */ |
| myTarget[myTargetIndex++] = targetChar; |
| } |
| else if ((_this->useFallback == TRUE) && |
| (_this->sharedData->staticData->hasFromUnicodeFallback == TRUE)) |
| { |
| /* Look up in the fallback table first */ |
| targetChar = ucmp8_getu (myFromUnicodeFallback, mySource[mySourceIndex-1]); |
| if (targetChar != 0 || !mySource[mySourceIndex - 1]) |
| { |
| /*writes the char to the output stream */ |
| myTarget[myTargetIndex++] = targetChar; |
| } |
| } |
| if (targetChar == 0 && mySource[mySourceIndex-1] != 0) |
| { |
| *err = U_INVALID_CHAR_FOUND; |
| _this->invalidUCharBuffer[0] = (UChar)mySource[mySourceIndex - 1]; |
| _this->invalidUCharLength = 1; |
| |
| /* Needed explicit cast for myTarget on MVS to make compiler happy - JJD */ |
| FromU_CALLBACK_MACRO(_this, |
| (char *)myTarget, |
| myTargetIndex, |
| targetLimit, |
| mySource, |
| mySourceIndex, |
| sourceLimit, |
| offsets, |
| flush, |
| err); |
| if (U_FAILURE (*err)) |
| { |
| break; |
| } |
| _this->invalidUCharLength = 0; |
| } |
| } |
| else |
| { |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| break; |
| } |
| |
| } |
| |
| *target += myTargetIndex; |
| *source += mySourceIndex; |
| |
| |
| return; |
| } |
| |
| UChar32 T_UConverter_getNextUChar_SBCS(UConverter* converter, |
| const char** source, |
| const char* sourceLimit, |
| UErrorCode* err) |
| { |
| UChar myUChar; |
| |
| |
| if ((*source)+1 > sourceLimit) |
| { |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| return 0xFFFD; |
| } |
| |
| |
| /*Gets the corresponding codepoint*/ |
| myUChar = converter->sharedData->table->sbcs.toUnicode[(unsigned char)*((*source)++)]; |
| |
| if (myUChar != 0xFFFD) return myUChar; |
| else |
| { |
| UChar* myUCharPtr = &myUChar; |
| const char* sourceFinal = *source; |
| |
| /* Do the fallback stuff */ |
| if ((converter->useFallback == TRUE)&& |
| (converter->sharedData->staticData->hasToUnicodeFallback == TRUE)) |
| { |
| myUChar = converter->sharedData->table->sbcs.toUnicodeFallback[ (unsigned char)*((*source)-1)]; |
| if (myUChar != 0xFFFD) return myUChar; |
| } |
| |
| *err = U_INVALID_CHAR_FOUND; |
| |
| /*Calls the ErrorFunctor after rewinding the input buffer*/ |
| (*source)--; |
| /*It's is very likely that the ErrorFunctor will write to the |
| *internal buffers */ |
| converter->fromCharErrorBehaviour(converter, |
| &myUCharPtr, |
| myUCharPtr + 1, |
| &sourceFinal, |
| sourceLimit, |
| NULL, |
| TRUE, |
| err); |
| |
| /*makes the internal caching transparent to the user*/ |
| if (*err == U_INDEX_OUTOFBOUNDS_ERROR) *err = U_ZERO_ERROR; |
| |
| return myUChar; |
| } |
| } |
| |
| static const UConverterImpl _SBCSImpl={ |
| UCNV_SBCS, |
| |
| _SBCSLoad, |
| _SBCSUnload, |
| |
| NULL, |
| NULL, |
| NULL, |
| |
| T_UConverter_toUnicode_SBCS, |
| NULL, |
| T_UConverter_fromUnicode_SBCS, |
| NULL, |
| T_UConverter_getNextUChar_SBCS, |
| |
| NULL |
| }; |
| |
| |
| /* Static data is in tools/makeconv/ucnvstat.c for data-based |
| * converters. Be sure to update it as well. |
| */ |
| |
| const UConverterSharedData _SBCSData={ |
| sizeof(UConverterSharedData), 1, |
| NULL, NULL, NULL, FALSE, &_SBCSImpl, |
| 0 |
| }; |
| |
| /* DBCS --------------------------------------------------------------------- */ |
| |
| U_CFUNC void |
| _DBCSLoad(UConverterSharedData *sharedData, const uint8_t *raw, UErrorCode *pErrorCode) { |
| const uint8_t *oldraw = raw; |
| ucmp16_initFromData(&sharedData->table->dbcs.toUnicode,&raw, pErrorCode); |
| if(((raw-oldraw)&3)!=0) { |
| raw+=4-((raw-oldraw)&3); /* pad to 4 */ |
| } |
| oldraw = raw; |
| ucmp16_initFromData(&sharedData->table->dbcs.fromUnicode, &raw, pErrorCode); |
| if (sharedData->staticData->hasFromUnicodeFallback == TRUE) |
| { |
| if(((raw-oldraw)&3)!=0) { |
| raw+=4-((raw-oldraw)&3); /* pad to 4 */ |
| } |
| ucmp16_initFromData(&sharedData->table->dbcs.fromUnicodeFallback, &raw, pErrorCode); |
| oldraw = raw; |
| } |
| if (sharedData->staticData->hasToUnicodeFallback == TRUE) |
| { |
| if(((raw-oldraw)&3)!=0) { |
| raw+=4-((raw-oldraw)&3); /* pad to 4 */ |
| } |
| ucmp16_initFromData(&sharedData->table->dbcs.toUnicodeFallback, &raw, pErrorCode); |
| } |
| } |
| |
| U_CFUNC void |
| _DBCSUnload(UConverterSharedData *sharedData) { |
| ucmp16_close (&sharedData->table->dbcs.fromUnicode); |
| ucmp16_close (&sharedData->table->dbcs.toUnicode); |
| if (sharedData->staticData->hasFromUnicodeFallback == TRUE) |
| ucmp16_close (&sharedData->table->dbcs.fromUnicodeFallback); |
| if (sharedData->staticData->hasToUnicodeFallback == TRUE) |
| ucmp16_close (&sharedData->table->dbcs.toUnicodeFallback); |
| uprv_free (sharedData->table); |
| } |
| |
| void T_UConverter_toUnicode_DBCS (UConverter * _this, |
| UChar ** target, |
| const UChar * targetLimit, |
| const char **source, |
| const char *sourceLimit, |
| int32_t *offsets, |
| UBool flush, |
| UErrorCode * err) |
| { |
| const char *mySource = ( char *) *source; |
| UChar *myTarget = *target; |
| int32_t mySourceIndex = 0; |
| int32_t myTargetIndex = 0; |
| int32_t targetLength = targetLimit - myTarget; |
| int32_t sourceLength = sourceLimit - (char *) mySource; |
| CompactShortArray *myToUnicode = NULL, *myToUnicodeFallback = NULL; |
| UChar targetUniChar = 0x0000; |
| UChar mySourceChar = 0x0000; |
| |
| myToUnicode = &_this->sharedData->table->dbcs.toUnicode; |
| myToUnicodeFallback = &_this->sharedData->table->dbcs.toUnicodeFallback; |
| |
| while (mySourceIndex < sourceLength) |
| { |
| if (myTargetIndex < targetLength) |
| { |
| /*gets the corresponding UniChar */ |
| mySourceChar = (unsigned char) mySource[mySourceIndex++]; |
| |
| /*We have no internal state, we should */ |
| if (_this->toUnicodeStatus == 0x00) |
| { |
| _this->toUnicodeStatus = (unsigned char) mySourceChar; |
| } |
| else |
| { |
| if (_this->toUnicodeStatus != 0x00) |
| { |
| mySourceChar = (UChar) ((_this->toUnicodeStatus << 8) | (mySourceChar & 0x00FF)); |
| _this->toUnicodeStatus = 0x00; |
| } |
| |
| targetUniChar = (UChar) ucmp16_getu (myToUnicode, mySourceChar); |
| |
| /*writing the UniChar to the output stream */ |
| if (targetUniChar != missingUCharMarker) |
| { |
| /*writes the UniChar to the output stream */ |
| myTarget[myTargetIndex++] = targetUniChar; |
| } |
| else if ((_this->useFallback == TRUE) && |
| (_this->sharedData->staticData->hasToUnicodeFallback == TRUE)) |
| { |
| targetUniChar = (UChar) ucmp16_getu(myToUnicodeFallback, mySourceChar); |
| if (targetUniChar != missingUCharMarker) |
| { |
| myTarget[myTargetIndex++] = targetUniChar; |
| } |
| } |
| if (targetUniChar == missingUCharMarker) |
| { |
| |
| *err = U_INVALID_CHAR_FOUND; |
| _this->invalidCharBuffer[0] = (char) (mySourceChar >> 8); |
| _this->invalidCharBuffer[1] = (char) mySourceChar; |
| _this->invalidCharLength = 2; |
| |
| ToU_CALLBACK_MACRO(_this, |
| myTarget, |
| myTargetIndex, |
| targetLimit, |
| mySource, |
| mySourceIndex, |
| sourceLimit, |
| offsets, |
| flush, |
| err); |
| |
| if (U_FAILURE (*err)) break; |
| _this->invalidCharLength = 0; |
| } |
| } |
| } |
| else |
| { |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| break; |
| } |
| } |
| |
| /*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 ((flush == TRUE) |
| && (mySourceIndex == sourceLength) |
| && (_this->toUnicodeStatus != 0x00)) |
| { |
| |
| if (U_SUCCESS(*err)) |
| { |
| *err = U_TRUNCATED_CHAR_FOUND; |
| _this->toUnicodeStatus = 0x00; |
| } |
| } |
| |
| *target += myTargetIndex; |
| *source += mySourceIndex; |
| |
| return; |
| } |
| |
| void T_UConverter_fromUnicode_DBCS (UConverter * _this, |
| char **target, |
| const char *targetLimit, |
| const UChar ** source, |
| const UChar * sourceLimit, |
| int32_t *offsets, |
| UBool flush, |
| UErrorCode * err) |
| { |
| const UChar *mySource = *source; |
| unsigned char *myTarget = (unsigned char *) *target; |
| int32_t mySourceIndex = 0; |
| int32_t myTargetIndex = 0; |
| int32_t targetLength = targetLimit - (char *) myTarget; |
| int32_t sourceLength = sourceLimit - mySource; |
| CompactShortArray *myFromUnicode = NULL, *myFromUnicodeFallback = NULL; |
| UChar targetUniChar = 0x0000; |
| UChar mySourceChar = 0x0000; |
| |
| myFromUnicode = &_this->sharedData->table->dbcs.fromUnicode; |
| myFromUnicodeFallback = &_this->sharedData->table->dbcs.fromUnicodeFallback; |
| |
| /*writing the char to the output stream */ |
| while (mySourceIndex < sourceLength) |
| { |
| |
| if (myTargetIndex < targetLength) |
| { |
| mySourceChar = (UChar) mySource[mySourceIndex++]; |
| |
| /*Gets the corresponding codepoint */ |
| targetUniChar = (UChar) ucmp16_getu (myFromUnicode, mySourceChar); |
| if (targetUniChar != missingCharMarker) |
| { |
| /*writes the char to the output stream */ |
| myTarget[myTargetIndex++] = (char) (targetUniChar >> 8); |
| if (myTargetIndex < targetLength) |
| { |
| myTarget[myTargetIndex++] = (char) targetUniChar; |
| } |
| else |
| { |
| _this->charErrorBuffer[0] = (char) targetUniChar; |
| _this->charErrorBufferLength = 1; |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| } |
| } |
| else if ((_this->useFallback == TRUE) && |
| (_this->sharedData->staticData->hasFromUnicodeFallback == TRUE)) |
| { |
| |
| targetUniChar = (UChar) ucmp16_getu (myFromUnicodeFallback, mySourceChar); |
| if (targetUniChar != missingCharMarker) |
| { |
| /*writes the char to the output stream */ |
| myTarget[myTargetIndex++] = (char) (targetUniChar >> 8); |
| if (myTargetIndex < targetLength) |
| { |
| myTarget[myTargetIndex++] = (char) targetUniChar; |
| } |
| else |
| { |
| _this->charErrorBuffer[0] = (char) targetUniChar; |
| _this->charErrorBufferLength = 1; |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| } |
| } |
| } |
| if (targetUniChar == missingCharMarker) |
| { |
| *err = U_INVALID_CHAR_FOUND; |
| _this->invalidUCharBuffer[0] = (UChar) mySourceChar; |
| _this->invalidUCharLength = 1; |
| |
| |
| /* Needed explicit cast for myTarget on MVS to make compiler happy - JJD */ |
| FromU_CALLBACK_MACRO(_this, |
| (char *)myTarget, |
| myTargetIndex, |
| targetLimit, |
| mySource, |
| mySourceIndex, |
| sourceLimit, |
| offsets, |
| flush, |
| err); |
| |
| if (U_FAILURE (*err)) break; |
| _this->invalidUCharLength = 0; |
| } |
| } |
| else |
| { |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| break; |
| } |
| } |
| |
| *target += myTargetIndex; |
| *source += mySourceIndex;; |
| |
| |
| return; |
| } |
| |
| UChar32 T_UConverter_getNextUChar_DBCS(UConverter* converter, |
| const char** source, |
| const char* sourceLimit, |
| UErrorCode* err) |
| { |
| UChar myUChar; |
| |
| /*Checks boundaries and set appropriate error codes*/ |
| if ((*source)+2 > sourceLimit) |
| { |
| if ((*source) >= sourceLimit) |
| { |
| /*Either caller has reached the end of the byte stream*/ |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| } |
| else if (((*source)+1) == sourceLimit) |
| { |
| /* a character was cut in half*/ |
| *err = U_TRUNCATED_CHAR_FOUND; |
| } |
| |
| return 0xFFFD; |
| } |
| |
| /*Gets the corresponding codepoint*/ |
| myUChar = ucmp16_getu((&converter->sharedData->table->dbcs.toUnicode), |
| (uint16_t)(((UChar)((**source)) << 8) |((uint8_t)*((*source)+1)))); |
| |
| /*update the input pointer*/ |
| *source += 2; |
| if (myUChar != 0xFFFD) return myUChar; |
| else |
| { |
| UChar* myUCharPtr = &myUChar; |
| const char* sourceFinal = *source; |
| |
| /* rewinding the input buffer*/ |
| (*source) -= 2; |
| /* Do the fallback stuff */ |
| if ((converter->useFallback == TRUE) && |
| (converter->sharedData->staticData->hasToUnicodeFallback == TRUE)) |
| { |
| myUChar = ucmp16_getu((&converter->sharedData->table->dbcs.toUnicodeFallback), |
| (uint16_t)(((UChar)((**source)) << 8) |((uint8_t)*((*source)-1)))); |
| if (myUChar != 0xFFFD) |
| { |
| *source += 2; |
| return myUChar; |
| } |
| } |
| |
| *err = U_INVALID_CHAR_FOUND; |
| |
| /*It's is very likely that the ErrorFunctor will write to the |
| *internal buffers */ |
| converter->fromCharErrorBehaviour(converter, |
| &myUCharPtr, |
| myUCharPtr + 1, |
| &sourceFinal, |
| sourceLimit, |
| NULL, |
| TRUE, |
| err); |
| /*makes the internal caching transparent to the user*/ |
| if (*err == U_INDEX_OUTOFBOUNDS_ERROR) *err = U_ZERO_ERROR; |
| |
| return myUChar; |
| } |
| } |
| |
| static const UConverterImpl _DBCSImpl={ |
| UCNV_DBCS, |
| |
| _DBCSLoad, |
| _DBCSUnload, |
| |
| NULL, |
| NULL, |
| NULL, |
| |
| T_UConverter_toUnicode_DBCS, |
| NULL, |
| T_UConverter_fromUnicode_DBCS, |
| NULL, |
| T_UConverter_getNextUChar_DBCS, |
| |
| NULL |
| }; |
| |
| |
| /* Static data is in tools/makeconv/ucnvstat.c for data-based |
| * converters. Be sure to update it as well. |
| */ |
| |
| const UConverterSharedData _DBCSData={ |
| sizeof(UConverterSharedData), 1, |
| NULL, NULL, NULL, FALSE, &_DBCSImpl, |
| 0, /* tounicodestatus */ |
| }; |
