| /* |
| ********************************************************************** |
| * Copyright (C) 2000, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| ********************************************************************** |
| * file name: ucnvmbcs.cpp |
| * encoding: US-ASCII |
| * tab size: 8 (not used) |
| * indentation:4 |
| * |
| * created on: 2000feb03 |
| * created by: Markus W. Scherer |
| */ |
| |
| #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" |
| |
| /* MBCS --------------------------------------------------------------------- */ |
| |
| static void |
| _MBCSLoad(UConverterSharedData *sharedData, const uint8_t *raw, UErrorCode *pErrorCode) { |
| const uint8_t *oldraw; |
| |
| sharedData->table->mbcs.starters = (bool_t*)raw; |
| oldraw = raw += sizeof(bool_t)*256; |
| |
| sharedData->table->mbcs.toUnicode = ucmp16_cloneFromData(&raw, pErrorCode); |
| if(((raw-oldraw)&3)!=0) { |
| raw+=4-((raw-oldraw)&3); /* pad to 4 */ |
| } |
| sharedData->table->mbcs.fromUnicode = ucmp16_cloneFromData(&raw, pErrorCode); |
| } |
| |
| static void |
| _MBCSUnload(UConverterSharedData *sharedData) { |
| ucmp16_close (sharedData->table->mbcs.fromUnicode); |
| ucmp16_close (sharedData->table->mbcs.toUnicode); |
| uprv_free (sharedData->table); |
| } |
| |
| void T_UConverter_toUnicode_MBCS (UConverter * _this, |
| UChar ** target, |
| const UChar * targetLimit, |
| const char **source, |
| const char *sourceLimit, |
| int32_t *offsets, |
| bool_t flush, |
| UErrorCode * err) |
| { |
| const char *mySource = *source; |
| UChar *myTarget = *target; |
| int32_t mySourceIndex = 0; |
| int32_t myTargetIndex = 0; |
| int32_t targetLength = targetLimit - myTarget; |
| int32_t sourceLength = sourceLimit - mySource; |
| CompactShortArray *myToUnicode = NULL; |
| UChar targetUniChar = 0x0000; |
| UChar mySourceChar = 0x0000; |
| bool_t *myStarters = NULL; |
| |
| |
| |
| |
| myToUnicode = _this->sharedData->table->mbcs.toUnicode; |
| myStarters = _this->sharedData->table->mbcs.starters; |
| |
| while (mySourceIndex < sourceLength) |
| { |
| if (myTargetIndex < targetLength) |
| { |
| /*gets the corresponding UniChar */ |
| mySourceChar = (unsigned char) (mySource[mySourceIndex++]); |
| |
| |
| if (myStarters[(uint8_t) mySourceChar] && |
| (_this->toUnicodeStatus == 0x00)) |
| { |
| _this->toUnicodeStatus = (unsigned char) mySourceChar; |
| } |
| else |
| { |
| /*In case there is a state, we update the source char |
| *by concatenating the previous char with the current |
| *one |
| */ |
| |
| if (_this->toUnicodeStatus != 0x00) |
| { |
| mySourceChar |= (UChar) (_this->toUnicodeStatus << 8); |
| |
| _this->toUnicodeStatus = 0x00; |
| } |
| |
| /*gets the corresponding Unicode codepoint */ |
| targetUniChar = (UChar) ucmp16_getu (myToUnicode, mySourceChar); |
| |
| /*writing the UniChar to the output stream */ |
| if (targetUniChar != missingUCharMarker) |
| { |
| myTarget[myTargetIndex++] = targetUniChar; |
| |
| } |
| else |
| { |
| *err = U_INVALID_CHAR_FOUND; |
| if (mySourceChar > 0xff) |
| { |
| _this->invalidCharLength = 2; |
| _this->invalidCharBuffer[0] = (char) (mySourceChar >> 8); |
| _this->invalidCharBuffer[1] = (char) mySourceChar; |
| } |
| else |
| { |
| _this->invalidCharLength = 1; |
| _this->invalidCharBuffer[0] = (char) mySourceChar; |
| } |
| |
| 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 (_this->toUnicodeStatus |
| && (mySourceIndex == sourceLength) |
| && (flush == TRUE)) |
| { |
| if (U_SUCCESS(*err)) |
| { |
| *err = U_TRUNCATED_CHAR_FOUND; |
| _this->toUnicodeStatus = 0x00; |
| } |
| } |
| |
| *target += myTargetIndex; |
| *source += mySourceIndex; |
| |
| return; |
| } |
| |
| void T_UConverter_toUnicode_MBCS_OFFSETS_LOGIC (UConverter * _this, |
| UChar ** target, |
| const UChar * targetLimit, |
| const char **source, |
| const char *sourceLimit, |
| int32_t *offsets, |
| bool_t flush, |
| UErrorCode * err) |
| { |
| const char *mySource = *source; |
| UChar *myTarget = *target; |
| int32_t mySourceIndex = 0; |
| int32_t myTargetIndex = 0; |
| int32_t targetLength = targetLimit - myTarget; |
| int32_t sourceLength = sourceLimit - mySource; |
| CompactShortArray *myToUnicode = NULL; |
| UChar targetUniChar = 0x0000; |
| UChar mySourceChar = 0x0000; |
| UChar oldMySourceChar; |
| bool_t *myStarters = NULL; |
| int32_t* originalOffsets = offsets; |
| |
| |
| |
| myToUnicode = _this->sharedData->table->mbcs.toUnicode; |
| myStarters = _this->sharedData->table->mbcs.starters; |
| |
| while (mySourceIndex < sourceLength) |
| { |
| if (myTargetIndex < targetLength) |
| { |
| /*gets the corresponding UniChar */ |
| mySourceChar = (unsigned char) (mySource[mySourceIndex++]); |
| |
| |
| if (myStarters[(uint8_t) mySourceChar] && |
| (_this->toUnicodeStatus == 0x00)) |
| { |
| _this->toUnicodeStatus = (unsigned char) mySourceChar; |
| } |
| else |
| { |
| /*In case there is a state, we update the source char |
| *by concatenating the previous char with the current |
| *one |
| */ |
| |
| if (_this->toUnicodeStatus != 0x00) |
| { |
| mySourceChar |= (UChar) (_this->toUnicodeStatus << 8); |
| |
| _this->toUnicodeStatus = 0x00; |
| } |
| |
| /*gets the corresponding Unicode codepoint */ |
| targetUniChar = (UChar) ucmp16_getu (myToUnicode, mySourceChar); |
| |
| |
| /*writing the UniChar to the output stream */ |
| if (targetUniChar != missingUCharMarker) |
| { |
| /*writes the UniChar to the output stream */ |
| { |
| |
| |
| if (targetUniChar > 0x00FF) |
| offsets[myTargetIndex] = mySourceIndex -2; /* double byte character - make the offset point to the first char */ |
| else |
| offsets[myTargetIndex] = mySourceIndex -1 ; /* single byte char. Offset is OK */ |
| |
| |
| } |
| myTarget[myTargetIndex++] = targetUniChar; |
| oldMySourceChar = mySourceChar; |
| |
| } |
| else |
| { |
| int32_t currentOffset = offsets[myTargetIndex-1] + ((oldMySourceChar>0x00FF)?2:1); |
| |
| *err = U_INVALID_CHAR_FOUND; |
| if (mySourceChar > 0xff) |
| { |
| _this->invalidCharLength = 2; |
| _this->invalidCharBuffer[0] = (char) (mySourceChar >> 8); |
| _this->invalidCharBuffer[1] = (char) mySourceChar; |
| } |
| else |
| { |
| _this->invalidCharLength = 1; |
| _this->invalidCharBuffer[0] = (char) mySourceChar; |
| } |
| |
| ToU_CALLBACK_OFFSETS_LOGIC_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 (_this->toUnicodeStatus |
| && (mySourceIndex == sourceLength) |
| && (flush == TRUE)) |
| { |
| if (U_SUCCESS(*err)) |
| { |
| *err = U_TRUNCATED_CHAR_FOUND; |
| _this->toUnicodeStatus = 0x00; |
| } |
| } |
| |
| *target += myTargetIndex; |
| *source += mySourceIndex; |
| |
| return; |
| } |
| |
| void T_UConverter_fromUnicode_MBCS (UConverter * _this, |
| char **target, |
| const char *targetLimit, |
| const UChar ** source, |
| const UChar * sourceLimit, |
| int32_t *offsets, |
| bool_t flush, |
| UErrorCode * err) |
| |
| { |
| const UChar *mySource = *source; |
| char *myTarget = *target; |
| int32_t mySourceIndex = 0; |
| int32_t myTargetIndex = 0; |
| int32_t targetLength = targetLimit - myTarget; |
| int32_t sourceLength = sourceLimit - mySource; |
| CompactShortArray *myFromUnicode = NULL; |
| UChar targetUniChar = 0x0000; |
| int8_t targetUniCharByteNum = 0; |
| UChar mySourceChar = 0x0000; |
| |
| myFromUnicode = _this->sharedData->table->mbcs.fromUnicode; |
| |
| /*writing the char to the output stream */ |
| while (mySourceIndex < sourceLength) |
| { |
| if (myTargetIndex < targetLength) |
| { |
| mySourceChar = (UChar) mySource[mySourceIndex++]; |
| targetUniChar = (UChar) ucmp16_getu (myFromUnicode, mySourceChar); |
| |
| |
| if (targetUniChar != missingCharMarker) |
| { |
| if (targetUniChar <= 0x00FF) |
| { |
| myTarget[myTargetIndex++] = (char) targetUniChar; |
| } |
| else |
| { |
| 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 |
| { |
| *err = U_INVALID_CHAR_FOUND; |
| _this->invalidUCharBuffer[0] = (UChar) mySourceChar; |
| _this->invalidUCharLength = 1; |
| |
| FromU_CALLBACK_MACRO(_this, |
| 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; |
| } |
| |
| void T_UConverter_fromUnicode_MBCS_OFFSETS_LOGIC (UConverter * _this, |
| char **target, |
| const char *targetLimit, |
| const UChar ** source, |
| const UChar * sourceLimit, |
| int32_t *offsets, |
| bool_t flush, |
| UErrorCode * err) |
| |
| { |
| const UChar *mySource = *source; |
| char *myTarget = *target; |
| int32_t mySourceIndex = 0; |
| int32_t myTargetIndex = 0; |
| int32_t targetLength = targetLimit - myTarget; |
| int32_t sourceLength = sourceLimit - mySource; |
| CompactShortArray *myFromUnicode = NULL; |
| UChar targetUniChar = 0x0000; |
| int8_t targetUniCharByteNum = 0; |
| UChar mySourceChar = 0x0000; |
| int32_t* originalOffsets = offsets; |
| |
| myFromUnicode = _this->sharedData->table->mbcs.fromUnicode; |
| |
| |
| |
| /*writing the char to the output stream */ |
| while (mySourceIndex < sourceLength) |
| { |
| if (myTargetIndex < targetLength) |
| { |
| mySourceChar = (UChar) mySource[mySourceIndex++]; |
| targetUniChar = (UChar) ucmp16_getu (myFromUnicode, mySourceChar); |
| |
| if (targetUniChar != missingCharMarker) |
| { |
| if (targetUniChar <= 0x00FF) |
| { |
| offsets[myTargetIndex] = mySourceIndex-1; |
| myTarget[myTargetIndex++] = (char) targetUniChar; |
| |
| } |
| else |
| { |
| offsets[myTargetIndex] = mySourceIndex-1; |
| myTarget[myTargetIndex++] = (char) (targetUniChar >> 8); |
| if (myTargetIndex < targetLength) |
| { |
| offsets[myTargetIndex] = mySourceIndex-1; |
| myTarget[myTargetIndex++] = (char) targetUniChar; |
| } |
| else |
| { |
| _this->charErrorBuffer[0] = (char) targetUniChar; |
| _this->charErrorBufferLength = 1; |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| } |
| } |
| } |
| else |
| { |
| int32_t currentOffset = mySourceIndex -1; |
| int32_t* offsetsAnchor = offsets; |
| |
| *err = U_INVALID_CHAR_FOUND; |
| _this->invalidUCharBuffer[0] = (UChar) mySourceChar; |
| _this->invalidUCharLength = 1; |
| |
| FromU_CALLBACK_OFFSETS_LOGIC_MACRO(_this, |
| 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; |
| } |
| |
| UChar T_UConverter_getNextUChar_MBCS(UConverter* converter, |
| const char** source, |
| const char* sourceLimit, |
| UErrorCode* err) |
| { |
| UChar myUChar; |
| char const *sourceInitial = *source; |
| /*safe keeps a ptr to the beginning in case we need to step back*/ |
| |
| /*Input boundary check*/ |
| if ((*source)+1 > sourceLimit) |
| { |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| return 0xFFFD; |
| } |
| |
| /*Checks to see if the byte is a lead*/ |
| if (converter->sharedData->table->mbcs.starters[(uint8_t)**source] == FALSE) |
| { |
| /*Not lead byte: we update the source ptr and get the codepoint*/ |
| myUChar = ucmp16_getu(converter->sharedData->table->mbcs.toUnicode, |
| (UChar)(**source)); |
| (*source)++; |
| } |
| else |
| { |
| /*Lead byte: we Build the codepoint and get the corresponding character |
| * and update the source ptr*/ |
| if ((*source + 2) > sourceLimit) |
| { |
| *err = U_TRUNCATED_CHAR_FOUND; |
| return 0xFFFD; |
| } |
| |
| myUChar = ucmp16_getu(converter->sharedData->table->mbcs.toUnicode, |
| (uint16_t)(((UChar)((**source)) << 8) |((uint8_t)*((*source)+1)))); |
| |
| (*source) += 2; |
| } |
| |
| if (myUChar != 0xFFFD) return myUChar; |
| else |
| { |
| /*rewinds source*/ |
| const char* sourceFinal = *source; |
| UChar* myUCharPtr = &myUChar; |
| |
| *err = U_INVALID_CHAR_FOUND; |
| *source = sourceInitial; |
| |
| /*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; |
| } |
| } |
| |
| void |
| _MBCSGetStarters(const UConverter* converter, bool_t starters[256], UErrorCode *pErrorCode) { |
| /* fills in the starters boolean array */ |
| uprv_memcpy(starters, converter->sharedData->table->mbcs.starters, 256*sizeof(bool_t)); |
| } |
| |
| static const UConverterImpl _MBCSImpl={ |
| UCNV_MBCS, |
| |
| _MBCSLoad, |
| _MBCSUnload, |
| |
| NULL, |
| NULL, |
| NULL, |
| |
| T_UConverter_toUnicode_MBCS, |
| T_UConverter_toUnicode_MBCS_OFFSETS_LOGIC, |
| T_UConverter_fromUnicode_MBCS, |
| T_UConverter_fromUnicode_MBCS_OFFSETS_LOGIC, |
| T_UConverter_getNextUChar_MBCS, |
| |
| _MBCSGetStarters |
| }; |
| |
| extern const UConverterSharedData _MBCSData={ |
| sizeof(UConverterSharedData), 1, |
| NULL, NULL, &_MBCSImpl, "MBCS", |
| 0, UCNV_IBM, UCNV_MBCS, 1, 1, |
| { 0, 1, 0, 0, 0, 0 } |
| }; |
