| /* |
| ******************************************************************************* |
| * |
| * Copyright (C) 1998-1999, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| * |
| ******************************************************************************* |
| * |
| * ucnv.c: |
| * Implements APIs for the ICU's codeset conversion library |
| * mostly calls through internal functions created and maintained |
| * by Bertrand A. Damiba |
| * |
| * Modification History: |
| * |
| * Date Name Description |
| * 04/04/99 helena Fixed internal header inclusion. |
| * 05/09/00 helena Added implementation to handle fallback mappings. |
| * 06/20/2000 helena OS/400 port changes; mostly typecast. |
| */ |
| #include "umutex.h" |
| #include "unicode/ures.h" |
| #include "uhash.h" |
| #include "ucmp16.h" |
| #include "ucmp8.h" |
| #include "ucnv_io.h" |
| #include "unicode/ucnv_err.h" |
| #include "ucnv_cnv.h" |
| #include "ucnv_imp.h" |
| #include "unicode/ucnv.h" |
| #include "cmemory.h" |
| #include "cstring.h" |
| #include "unicode/ustring.h" |
| #include "unicode/uloc.h" |
| #include "ucnv_bld.h" |
| |
| #if 0 |
| /* debugging for converters */ |
| # include <stdio.h> |
| void UCNV_DEBUG_LOG(char *what, char *who, void *p, int l) |
| { |
| static FILE *f = NULL; |
| if(f==NULL) |
| { |
| f = fopen("c:\\UCNV_DEBUG_LOG.txt", "w"); |
| } |
| fprintf(f, "%-20s %-10s %p@%d\n", |
| who,what,p,l); |
| fflush(f); |
| } |
| # define UCNV_DEBUG_LOG(x,y,z) UCNV_DEBUG_LOG(x,y,z,__LINE__) |
| #else |
| # define UCNV_DEBUG_LOG(x,y,z) |
| #endif |
| |
| #define CHUNK_SIZE 5*1024 |
| |
| /* Internal function : begin */ |
| static int32_t ucnv_getAmbiguousCCSID (const UConverter* cnv); |
| /* Internal function : end */ |
| |
| static void T_UConverter_fromCodepageToCodepage (UConverter * outConverter, |
| UConverter * inConverter, |
| char **target, |
| const char *targetLimit, |
| const char **source, |
| const char *sourceLimit, |
| int32_t* offsets, |
| UBool flush, |
| UErrorCode * err); |
| |
| |
| const char* ucnv_getDefaultName () |
| { |
| return ucnv_io_getDefaultConverterName(); |
| } |
| |
| void ucnv_setDefaultName (const char *converterName) |
| { |
| ucnv_io_setDefaultConverterName(converterName); |
| } |
| /*Calls through createConverter */ |
| UConverter* ucnv_open (const char *name, |
| UErrorCode * err) |
| { |
| if (err == NULL || U_FAILURE (*err)) { |
| return NULL; |
| } |
| |
| return createConverter (name, err); |
| } |
| |
| /*Extracts the UChar* to a char* and calls through createConverter */ |
| UConverter* ucnv_openU (const UChar * name, |
| UErrorCode * err) |
| { |
| char asciiName[UCNV_MAX_CONVERTER_NAME_LENGTH]; |
| |
| if (U_FAILURE (*err)) |
| return NULL; |
| if (name == NULL) |
| return ucnv_open (NULL, err); |
| if (u_strlen (name) > UCNV_MAX_CONVERTER_NAME_LENGTH) |
| { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return NULL; |
| } |
| return ucnv_open (u_austrcpy (asciiName, name), err); |
| } |
| |
| /*Assumes a $platform-#codepage.$CONVERTER_FILE_EXTENSION scheme and calls |
| *through createConverter*/ |
| UConverter* ucnv_openCCSID (int32_t codepage, |
| UConverterPlatform platform, |
| UErrorCode * err) |
| { |
| char myName[UCNV_MAX_CONVERTER_NAME_LENGTH]; |
| |
| if (U_FAILURE (*err)) |
| return NULL; |
| |
| copyPlatformString (myName, platform); |
| uprv_strcat (myName, "-"); |
| T_CString_integerToString (myName + uprv_strlen (myName), codepage, 10); |
| |
| |
| return createConverter (myName, err); |
| } |
| |
| /*Decreases the reference counter in the shared immutable section of the object |
| *and frees the mutable part*/ |
| |
| void ucnv_close (UConverter * converter) |
| { |
| /* first, notify the callback functions that the converter is closed */ |
| UConverterToUnicodeArgs toUArgs = { |
| sizeof(UConverterToUnicodeArgs), |
| TRUE, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL |
| }; |
| UConverterFromUnicodeArgs fromUArgs = { |
| sizeof(UConverterFromUnicodeArgs), |
| TRUE, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL |
| }; |
| UErrorCode errorCode; |
| |
| if (converter == NULL) |
| { |
| return; |
| } |
| |
| toUArgs.converter = fromUArgs.converter = converter; |
| errorCode = U_ZERO_ERROR; |
| converter->fromCharErrorBehaviour(converter->toUContext, &toUArgs, NULL, 0, UCNV_CLOSE, &errorCode); |
| errorCode = U_ZERO_ERROR; |
| converter->fromUCharErrorBehaviour(converter->fromUContext, &fromUArgs, NULL, 0, 0, UCNV_CLOSE, &errorCode); |
| |
| if (converter->sharedData->impl->close != NULL) { |
| converter->sharedData->impl->close(converter); |
| } |
| |
| if (converter->sharedData->referenceCounter != ~0) { |
| umtx_lock (NULL); |
| if (converter->sharedData->referenceCounter != 0) { |
| converter->sharedData->referenceCounter--; |
| } |
| umtx_unlock (NULL); |
| } |
| uprv_free (converter); |
| |
| return; |
| } |
| |
| /*Frees all shared immutable objects that aren't referred to (reference count = 0) |
| */ |
| int32_t ucnv_flushCache () |
| { |
| UConverterSharedData *mySharedData = NULL; |
| int32_t pos = -1; |
| int32_t tableDeletedNum = 0; |
| const UHashElement *e; |
| |
| /*if shared data hasn't even been lazy evaluated yet |
| * return 0 |
| */ |
| if (SHARED_DATA_HASHTABLE == NULL) |
| return 0; |
| |
| /*creates an enumeration to iterate through every element in the |
| *table |
| */ |
| umtx_lock (NULL); |
| while ((e = uhash_nextElement (SHARED_DATA_HASHTABLE, &pos)) != NULL) |
| { |
| mySharedData = (UConverterSharedData *) e->value; |
| /*deletes only if reference counter == 0 */ |
| if (mySharedData->referenceCounter == 0) |
| { |
| tableDeletedNum++; |
| |
| UCNV_DEBUG_LOG("del",mySharedData->staticData->name,mySharedData); |
| |
| uhash_removeElement(SHARED_DATA_HASHTABLE, e); |
| deleteSharedConverterData (mySharedData); |
| } |
| } |
| umtx_unlock (NULL); |
| |
| return tableDeletedNum; |
| } |
| |
| /*returns a single Name from the list, will return NULL if out of bounds |
| */ |
| const char* ucnv_getAvailableName (int32_t n) |
| { |
| if (0 <= n && n <= 0xffff) { |
| UErrorCode err = U_ZERO_ERROR; |
| const char *name = ucnv_io_getAvailableConverter((uint16_t)n, &err); |
| if (U_SUCCESS(err)) { |
| return name; |
| } |
| } |
| return NULL; |
| } |
| |
| int32_t ucnv_countAvailable () |
| { |
| UErrorCode err = U_ZERO_ERROR; |
| return ucnv_io_countAvailableConverters(&err); |
| } |
| |
| U_CAPI uint16_t |
| ucnv_countAliases(const char *alias, UErrorCode *pErrorCode) { |
| const char *p; |
| return ucnv_io_getAliases(alias, &p, pErrorCode); |
| } |
| |
| |
| U_CAPI const char * |
| ucnv_getAlias(const char *alias, uint16_t n, UErrorCode *pErrorCode) { |
| return ucnv_io_getAlias(alias, n, pErrorCode); |
| } |
| |
| U_CAPI void |
| ucnv_getAliases(const char *alias, const char **aliases, UErrorCode *pErrorCode) { |
| const char *p; |
| uint16_t count=ucnv_io_getAliases(alias, &p, pErrorCode); |
| while(count>0) { |
| *aliases++=p; |
| /* skip a name, first the canonical converter name */ |
| p+=uprv_strlen(p)+1; |
| --count; |
| } |
| } |
| |
| U_CAPI uint16_t |
| ucnv_countStandards(void) { |
| UErrorCode err = U_ZERO_ERROR; |
| return ucnv_io_countStandards(&err); |
| } |
| |
| void ucnv_getSubstChars (const UConverter * converter, |
| char *mySubChar, |
| int8_t * len, |
| UErrorCode * err) |
| { |
| if (U_FAILURE (*err)) |
| return; |
| |
| if (*len < converter->subCharLen) /*not enough space in subChars */ |
| { |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| return; |
| } |
| |
| uprv_memcpy (mySubChar, converter->subChar, converter->subCharLen); /*fills in the subchars */ |
| *len = converter->subCharLen; /*store # of bytes copied to buffer */ |
| |
| return; |
| } |
| |
| void ucnv_setSubstChars (UConverter * converter, |
| const char *mySubChar, |
| int8_t len, |
| UErrorCode * err) |
| { |
| if (U_FAILURE (*err)) |
| return; |
| |
| /*Makes sure that the subChar is within the codepages char length boundaries */ |
| if ((len > converter->sharedData->staticData->maxBytesPerChar) |
| || (len < converter->sharedData->staticData->minBytesPerChar)) |
| { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| |
| uprv_memcpy (converter->subChar, mySubChar, len); /*copies the subchars */ |
| converter->subCharLen = len; /*sets the new len */ |
| |
| return; |
| } |
| |
| |
| |
| |
| int32_t ucnv_getDisplayName (const UConverter * converter, |
| const char *displayLocale, |
| UChar * displayName, |
| int32_t displayNameCapacity, |
| UErrorCode * err) |
| { |
| UChar stringToWriteBuffer[UCNV_MAX_CONVERTER_NAME_LENGTH]; |
| UChar const *stringToWrite; |
| int32_t stringToWriteLength; |
| UResourceBundle *rb = NULL; |
| |
| if (U_FAILURE (*err)) |
| return 0; |
| |
| /*create an RB, init the fill-in string, gets it from the RB */ |
| rb = ures_open (NULL, displayLocale, err); |
| |
| stringToWrite = ures_getStringByKey(rb, |
| converter->sharedData->staticData->name, |
| &stringToWriteLength, |
| err); |
| if (rb) |
| ures_close (rb); |
| |
| if(U_FAILURE(*err)) |
| { |
| /*Error While creating or getting resource from the resource bundle |
| *use the internal name instead |
| * |
| *sets stringToWriteLength (which accounts for a NULL terminator) |
| *and stringToWrite |
| */ |
| stringToWriteLength = uprv_strlen (converter->sharedData->staticData->name) + 1; |
| stringToWrite = u_uastrcpy (stringToWriteBuffer, converter->sharedData->staticData->name); |
| |
| /*Hides the fallback to the internal name from the user */ |
| if (*err == U_MISSING_RESOURCE_ERROR) |
| *err = U_ZERO_ERROR; |
| } |
| |
| /*At this point we have a displayName and its length |
| *we want to see if it fits in the user provided params |
| */ |
| |
| if (stringToWriteLength <= displayNameCapacity) |
| { |
| /*it fits */ |
| u_strcpy (displayName, stringToWrite); |
| } |
| else |
| { |
| /*it doesn't fit */ |
| *err = U_BUFFER_OVERFLOW_ERROR; |
| |
| u_strncpy (displayName, stringToWrite, displayNameCapacity); |
| /*Zero terminates the string */ |
| if (displayNameCapacity > 0) |
| displayName[displayNameCapacity - 1] = 0x0000; |
| } |
| |
| /*if the user provided us with a with an outputLength |
| *buffer we'll store in it the theoretical size of the |
| *displayString |
| */ |
| return stringToWriteLength; |
| } |
| |
| |
| /*resets the internal states of a converter |
| *goal : have the same behaviour than a freshly created converter |
| */ |
| void ucnv_reset (UConverter * converter) |
| { |
| /* first, notify the callback functions that the converter is reset */ |
| UConverterToUnicodeArgs toUArgs = { |
| sizeof(UConverterToUnicodeArgs), |
| TRUE, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL |
| }; |
| UConverterFromUnicodeArgs fromUArgs = { |
| sizeof(UConverterFromUnicodeArgs), |
| TRUE, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL |
| }; |
| UErrorCode errorCode; |
| |
| if(converter == NULL) { |
| return; |
| } |
| toUArgs.converter = fromUArgs.converter = converter; |
| errorCode = U_ZERO_ERROR; |
| converter->fromCharErrorBehaviour(converter->toUContext, &toUArgs, NULL, 0, UCNV_RESET, &errorCode); |
| errorCode = U_ZERO_ERROR; |
| converter->fromUCharErrorBehaviour(converter->fromUContext, &fromUArgs, NULL, 0, 0, UCNV_RESET, &errorCode); |
| |
| /* now reset the converter itself */ |
| converter->toUnicodeStatus = converter->sharedData->toUnicodeStatus; |
| converter->fromUnicodeStatus = 0; |
| converter->UCharErrorBufferLength = 0; |
| converter->charErrorBufferLength = 0; |
| if (converter->sharedData->impl->reset != NULL) { |
| /* call the custom reset function */ |
| converter->sharedData->impl->reset(converter); |
| } else { |
| converter->mode = UCNV_SI; |
| } |
| } |
| |
| void ucnv_resetToUnicode(UConverter *converter) |
| { |
| #if 0 |
| UConverterToUnicodeArgs toUArgs = { |
| sizeof(UConverterToUnicodeArgs), |
| TRUE, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL |
| }; |
| UErrorCode errorCode = U_ZERO_ERROR; |
| |
| if(converter == NULL) { |
| return; |
| } |
| |
| toUArgs.converter = converter; |
| converter->fromCharErrorBehaviour(converter->toUContext, &toUArgs, NULL, 0, UCNV_RESET, &errorCode); |
| |
| /* now reset the converter itself */ |
| converter->toUnicodeStatus = converter->sharedData->toUnicodeStatus; |
| converter->fromUnicodeStatus = 0; |
| converter->UCharErrorBufferLength = 0; |
| converter->charErrorBufferLength = 0; |
| |
| /* Todo: Needs rest of implementation */ |
| #endif |
| } |
| |
| void ucnv_resetFromUnicode(UConverter *converter) |
| { |
| #if 0 |
| UConverterFromUnicodeArgs fromUArgs = { |
| sizeof(UConverterFromUnicodeArgs), |
| TRUE, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL |
| }; |
| UErrorCode errorCode = U_ZERO_ERROR; |
| |
| if(converter == NULL) { |
| return; |
| } |
| |
| fromUArgs.converter = converter; |
| converter->fromUCharErrorBehaviour(converter->fromUContext, &fromUArgs, NULL, 0, 0, UCNV_RESET, &errorCode); |
| |
| /* now reset the converter itself */ |
| converter->toUnicodeStatus = converter->sharedData->toUnicodeStatus; |
| converter->fromUnicodeStatus = 0; |
| converter->UCharErrorBufferLength = 0; |
| converter->charErrorBufferLength = 0; |
| |
| /* Todo: Needs rest of implementation */ |
| #endif |
| } |
| |
| int8_t ucnv_getMaxCharSize (const UConverter * converter) |
| { |
| return converter->sharedData->staticData->maxBytesPerChar; |
| } |
| |
| |
| int8_t ucnv_getMinCharSize (const UConverter * converter) |
| { |
| return converter->sharedData->staticData->minBytesPerChar; |
| } |
| |
| const char* ucnv_getName (const UConverter * converter, UErrorCode * err) |
| |
| { |
| if (U_FAILURE (*err)) |
| return NULL; |
| if(converter->sharedData->impl->getName){ |
| const char* temp= converter->sharedData->impl->getName(converter); |
| if(temp) |
| return temp; |
| } |
| return converter->sharedData->staticData->name; |
| } |
| |
| int32_t ucnv_getCCSID (const UConverter * converter, |
| UErrorCode * err) |
| { |
| if (U_FAILURE (*err)) |
| return -1; |
| |
| return converter->sharedData->staticData->codepage; |
| } |
| |
| |
| UConverterPlatform ucnv_getPlatform (const UConverter * converter, |
| UErrorCode * err) |
| { |
| if (U_FAILURE (*err)) |
| return UCNV_UNKNOWN; |
| |
| return (UConverterPlatform)converter->sharedData->staticData->platform; |
| } |
| |
| U_CAPI void U_EXPORT2 |
| ucnv_getToUCallBack (const UConverter * converter, |
| UConverterToUCallback *action, |
| void **context) |
| { |
| *action = converter->fromCharErrorBehaviour; |
| *context = converter->toUContext; |
| } |
| |
| U_CAPI void U_EXPORT2 |
| ucnv_getFromUCallBack (const UConverter * converter, |
| UConverterFromUCallback *action, |
| void **context) |
| { |
| *action = converter->fromUCharErrorBehaviour; |
| *context = converter->fromUContext; |
| } |
| |
| void ucnv_setToUCallBack (UConverter * converter, |
| UConverterToUCallback newAction, |
| void* newContext, |
| UConverterToUCallback *oldAction, |
| void** oldContext, |
| UErrorCode * err) |
| { |
| if (U_FAILURE (*err)) |
| return; |
| *oldAction = converter->fromCharErrorBehaviour; |
| converter->fromCharErrorBehaviour = newAction; |
| *oldContext = converter->toUContext; |
| converter->toUContext = newContext; |
| } |
| |
| void ucnv_setFromUCallBack (UConverter * converter, |
| UConverterFromUCallback newAction, |
| void* newContext, |
| UConverterFromUCallback *oldAction, |
| void** oldContext, |
| UErrorCode * err) |
| { |
| |
| if (U_FAILURE (*err)) |
| return; |
| *oldAction = converter->fromUCharErrorBehaviour; |
| converter->fromUCharErrorBehaviour = newAction; |
| *oldContext = converter->fromUContext; |
| converter->fromUContext = newContext; |
| } |
| |
| void ucnv_fromUnicode (UConverter * _this, |
| char **target, |
| const char *targetLimit, |
| const UChar ** source, |
| const UChar * sourceLimit, |
| int32_t* offsets, |
| UBool flush, |
| UErrorCode * err) |
| { |
| UConverterFromUnicodeArgs args; |
| /* |
| * Check parameters in for all conversions |
| */ |
| if (U_FAILURE (*err)) return; |
| if ((_this == NULL) || ((char *) targetLimit < *target) || (sourceLimit < *source)) |
| { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| |
| |
| /* |
| * Deal with stored carry over data. This is done in the common location |
| * to avoid doing it for each conversion. |
| */ |
| if (_this->charErrorBufferLength > 0) |
| { |
| int32_t myTargetIndex = 0; |
| |
| flushInternalCharBuffer (_this, |
| (char *) *target, |
| &myTargetIndex, |
| targetLimit - *target, |
| offsets?&offsets:NULL, |
| err); |
| *target += myTargetIndex; |
| if (U_FAILURE (*err)) return; |
| } |
| |
| args.converter = _this; |
| args.flush = flush; |
| args.offsets = offsets; |
| args.source = *source; |
| args.sourceLimit = sourceLimit; |
| args.target = *target; |
| args.targetLimit = targetLimit; |
| args.size = sizeof(args); |
| if (offsets) { |
| if (_this->sharedData->impl->fromUnicodeWithOffsets != NULL) { |
| _this->sharedData->impl->fromUnicodeWithOffsets(&args, err); |
| *source = args.source; |
| *target = args.target; |
| return; |
| } else { |
| /* all code points are of the same length */ |
| int32_t targetSize = targetLimit - *target; |
| int32_t i, bytesPerChar = _this->sharedData->staticData->maxBytesPerChar; |
| |
| if(bytesPerChar == 1) { |
| for (i=0; i<targetSize; i++) { |
| args.offsets[i] = i; |
| } |
| } else if(bytesPerChar == 2) { |
| for (i=0; i<targetSize; i++) { |
| args.offsets[i] = i>>1; |
| } |
| } else { |
| int32_t j = 0, k = bytesPerChar; |
| |
| for (i=0; i<targetSize; i++) { |
| /* offsets[i] = i/bytesPerChar; -- without division */ |
| args.offsets[i] = j; |
| if(--k == 0) { |
| k = bytesPerChar; |
| ++j; |
| } |
| } |
| } |
| } |
| } |
| |
| /*calls the specific conversion routines */ |
| _this->sharedData->impl->fromUnicode(&args, err); |
| *source = args.source; |
| *target = args.target; |
| return; |
| } |
| |
| |
| |
| void ucnv_toUnicode (UConverter * _this, |
| UChar ** target, |
| const UChar * targetLimit, |
| const char **source, |
| const char *sourceLimit, |
| int32_t* offsets, |
| UBool flush, |
| UErrorCode * err) |
| { |
| UConverterToUnicodeArgs args; |
| /* |
| * Check parameters in for all conversions |
| */ |
| if (U_FAILURE (*err)) return; |
| if ((_this == NULL) || ((UChar *) targetLimit < *target) || (sourceLimit < *source)) |
| { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| |
| /* |
| * Deal with stored carry over data. This is done in the common location |
| * to avoid doing it for each conversion. |
| */ |
| if (_this->UCharErrorBufferLength > 0) |
| { |
| int32_t myTargetIndex = 0; |
| |
| flushInternalUnicodeBuffer (_this, |
| *target, |
| &myTargetIndex, |
| targetLimit - *target, |
| offsets?&offsets:NULL, |
| err); |
| *target += myTargetIndex; |
| if (U_FAILURE (*err)) |
| return; |
| } |
| |
| args.converter = _this; |
| args.flush = flush; |
| args.offsets = offsets; |
| args.source = (char *) *source; |
| args.sourceLimit = sourceLimit; |
| args.target = *target; |
| args.targetLimit = targetLimit; |
| args.size = sizeof(args); |
| if (offsets) { |
| if (_this->sharedData->impl->toUnicodeWithOffsets != NULL) { |
| _this->sharedData->impl->toUnicodeWithOffsets(&args, err); |
| *source = args.source; |
| *target = args.target; |
| return; |
| } else { |
| /* all code points are of the same length */ |
| int32_t targetSize = targetLimit - *target; |
| int32_t i, bytesPerChar = _this->sharedData->staticData->maxBytesPerChar; |
| |
| if(bytesPerChar == 1) { |
| for (i=0; i<targetSize; i++) { |
| offsets[i] = i; |
| } |
| } else if(bytesPerChar == 2) { |
| for (i=0; i<targetSize; i++) { |
| offsets[i] = i<<1; |
| } |
| } else { |
| for (i=0; i<targetSize; i++) { |
| offsets[i] = i*bytesPerChar; |
| } |
| } |
| } |
| } |
| |
| /*calls the specific conversion routines */ |
| _this->sharedData->impl->toUnicode(&args, err); |
| |
| *source = args.source; |
| *target = args.target; |
| return; |
| } |
| |
| int32_t ucnv_fromUChars (const UConverter * converter, |
| char *target, |
| int32_t targetSize, |
| const UChar * source, |
| int32_t sourceSize, |
| UErrorCode * err) |
| { |
| const UChar *mySource_limit; |
| int32_t mySourceLength = sourceSize; |
| UConverter myConverter; |
| char *myTarget_limit; |
| int32_t targetCapacity = 0; |
| UConverterFromUnicodeArgs args; |
| |
| if (U_FAILURE (*err)) |
| return 0; |
| |
| if ((converter == NULL) || (targetSize < 0)) |
| { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| |
| /*makes a local copy of the UConverter */ |
| myConverter = *converter; |
| |
| |
| /*Removes all state info on the UConverter */ |
| ucnv_reset (&myConverter); |
| |
| /*if the source is empty we return immediately */ |
| if (sourceSize == -1) { |
| mySourceLength = u_strlen (source); |
| } |
| if (mySourceLength == 0) |
| { |
| /*for consistency we still need to |
| *store 0 in the targetCapacity |
| *if the user requires it |
| */ |
| return 0; |
| } |
| |
| mySource_limit = source + mySourceLength; |
| myTarget_limit = target + targetSize; |
| |
| /* Pin the limit to U_MAX_PTR. NULL check is for AS/400. */ |
| if((myTarget_limit < target) || (myTarget_limit == NULL)) { |
| myTarget_limit = (char *)U_MAX_PTR; |
| } |
| |
| args.converter = &myConverter; |
| args.flush = TRUE; |
| args.offsets = NULL; |
| args.source = source; |
| args.sourceLimit = mySource_limit; |
| args.target = target; |
| args.targetLimit = myTarget_limit; |
| args.size = sizeof(args); |
| if (targetSize > 0) |
| { |
| /*calls the specific conversion routines */ |
| args.converter->sharedData->impl->fromUnicode(&args, err); |
| |
| targetCapacity = args.target - target; |
| } |
| |
| /*Updates targetCapacity to contain the number of bytes written to target */ |
| |
| /* If the output buffer is exhausted, we need to stop writing |
| * to it but continue the conversion in order to store in targetSize |
| * the number of bytes that was required*/ |
| if (*err == U_BUFFER_OVERFLOW_ERROR || targetSize == 0) |
| { |
| char target2[CHUNK_SIZE]; |
| const char *target2_limit = target2 + CHUNK_SIZE; |
| |
| /*We use a stack allocated buffer around which we loop |
| *(in case the output is greater than CHUNK_SIZE) |
| */ |
| do |
| { |
| *err = U_ZERO_ERROR; |
| args.target = target2; |
| args.targetLimit = target2_limit; |
| args.converter->sharedData->impl->fromUnicode(&args, err); |
| /*updates the output parameter to contain the number of char required */ |
| targetCapacity += (args.target - target2); |
| } while (*err == U_BUFFER_OVERFLOW_ERROR); |
| /*We will set the error code to U_BUFFER_OVERFLOW_ERROR only if |
| *nothing graver happened in the previous loop*/ |
| if (U_SUCCESS (*err)) |
| *err = U_BUFFER_OVERFLOW_ERROR; |
| } |
| |
| return targetCapacity; |
| } |
| |
| int32_t ucnv_toUChars (const UConverter * converter, |
| UChar * target, |
| int32_t targetSize, |
| const char *source, |
| int32_t sourceSize, |
| UErrorCode * err) |
| { |
| const char *mySource_limit = source + sourceSize; |
| UConverter myConverter; |
| UChar *myTarget_limit; |
| int32_t targetCapacity; |
| UConverterToUnicodeArgs args; |
| |
| if (U_FAILURE (*err)) |
| return 0; |
| |
| if ((converter == NULL) || (targetSize < 0) || (sourceSize < 0)) |
| { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| /*Means there is no work to be done */ |
| if (sourceSize == 0) |
| { |
| /*for consistency we still need to |
| *store 0 in the targetCapacity |
| *if the user requires it |
| */ |
| if (targetSize >= 1) |
| { |
| target[0] = 0x0000; |
| return 1; |
| } |
| else |
| return 0; |
| } |
| |
| /*makes a local copy of the UConverter */ |
| myConverter = *converter; |
| |
| /*Removes all state info on the UConverter */ |
| ucnv_reset (&myConverter); |
| |
| args.converter = &myConverter; |
| args.flush = TRUE; |
| args.offsets = NULL; |
| args.source = source; |
| args.sourceLimit = mySource_limit; |
| args.target = target; |
| args.size = sizeof(args); |
| if (targetSize > 0) |
| { |
| myTarget_limit = target + targetSize - 1; |
| |
| /* Pin the limit to U_MAX_PTR. NULL check is for AS/400. */ |
| if ((myTarget_limit == NULL) || (myTarget_limit < target)) { |
| myTarget_limit = ((UChar*)U_MAX_PTR) - 1; |
| } |
| |
| /*Not in pure pre-flight mode */ |
| |
| args.targetLimit = myTarget_limit; |
| args.converter->sharedData->impl->toUnicode(&args, err); |
| |
| /*Null terminates the string */ |
| *(args.target) = 0x0000; |
| } |
| |
| |
| /*Rigs targetCapacity to have at least one cell for zero termination */ |
| /*Updates targetCapacity to contain the number of bytes written to target */ |
| targetCapacity = 1; |
| targetCapacity += args.target - target; |
| |
| /* If the output buffer is exhausted, we need to stop writing |
| * to it but if the input buffer is not exhausted, |
| * we need to continue the conversion in order to store in targetSize |
| * the number of bytes that was required |
| */ |
| if (*err == U_BUFFER_OVERFLOW_ERROR || targetSize == 0) |
| { |
| UChar target2[CHUNK_SIZE]; |
| const UChar *target2_limit = target2 + CHUNK_SIZE; |
| |
| /*We use a stack allocated buffer around which we loop |
| (in case the output is greater than CHUNK_SIZE) */ |
| do |
| { |
| *err = U_ZERO_ERROR; |
| args.target = target2; |
| args.targetLimit = target2_limit; |
| args.converter->sharedData->impl->toUnicode(&args, err); |
| /*updates the output parameter to contain the number of char required */ |
| targetCapacity += args.target - target2; |
| } while (*err == U_BUFFER_OVERFLOW_ERROR); |
| |
| if (U_SUCCESS (*err)) |
| *err = U_BUFFER_OVERFLOW_ERROR; |
| } |
| |
| return targetCapacity; |
| } |
| |
| UChar32 ucnv_getNextUChar(UConverter * converter, |
| const char **source, |
| const char *sourceLimit, |
| UErrorCode * err) |
| { |
| UConverterToUnicodeArgs args; |
| UChar32 ch; |
| |
| if(err == NULL || U_FAILURE(*err)) { |
| return 0xffff; |
| } |
| |
| /* In case internal data had been stored |
| * we return the first UChar32 in the internal buffer, |
| * and update the internal state accordingly |
| */ |
| if (converter->UCharErrorBufferLength > 0) |
| { |
| UTextOffset i = 0; |
| UChar32 myUChar; |
| UTF_NEXT_CHAR(converter->UCharErrorBuffer, i, sizeof(converter->UCharErrorBuffer), myUChar); |
| /*In this memmove we update the internal buffer by |
| *popping the first character. |
| *Note that in the call itself we decrement |
| *UCharErrorBufferLength |
| */ |
| uprv_memmove (converter->UCharErrorBuffer, |
| converter->UCharErrorBuffer + i, |
| (converter->UCharErrorBufferLength - i) * sizeof (UChar)); |
| converter->UCharErrorBufferLength -= (int8_t)i; |
| return myUChar; |
| } |
| /*calls the specific conversion routines */ |
| /*as dictated in a code review, avoids a switch statement */ |
| args.converter = converter; |
| args.flush = TRUE; |
| args.offsets = NULL; |
| args.source = *source; |
| args.sourceLimit = sourceLimit; |
| args.target = NULL; |
| args.targetLimit = NULL; |
| args.size = sizeof(args); |
| ch = converter->sharedData->impl->getNextUChar(&args, err); |
| *source = args.source; |
| return ch; |
| } |
| |
| |
| |
| /************************** |
| * Will convert a sequence of bytes from one codepage to another. |
| * @param toConverterName: The name of the converter that will be used to encode the output buffer |
| * @param fromConverterName: The name of the converter that will be used to decode the input buffer |
| * @param target: Pointer to the output buffer* written |
| * @param targetLength: on input contains the capacity of target, on output the number of bytes copied to target |
| * @param source: Pointer to the input buffer |
| * @param sourceLength: on input contains the capacity of source, on output the number of bytes processed in "source" |
| * @param internal: used internally to store store state data across calls |
| * @param err: fills in an error status |
| */ |
| static void |
| T_UConverter_fromCodepageToCodepage (UConverter * outConverter, |
| UConverter * inConverter, |
| char **target, |
| const char *targetLimit, |
| const char **source, |
| const char *sourceLimit, |
| int32_t* offsets, |
| UBool flush, |
| UErrorCode * err) |
| { |
| |
| UChar out_chunk[CHUNK_SIZE]; |
| const UChar *out_chunk_limit = out_chunk + CHUNK_SIZE; |
| UChar *out_chunk_alias; |
| UChar const *out_chunk_alias2; |
| |
| |
| if (U_FAILURE (*err)) return; |
| |
| |
| /*loops until the input buffer is completely consumed |
| *or if an error has be encountered |
| *first we convert from inConverter codepage to Unicode |
| *then from Unicode to outConverter codepage |
| */ |
| while ((*source != sourceLimit) && U_SUCCESS (*err)) |
| { |
| out_chunk_alias = out_chunk; |
| ucnv_toUnicode (inConverter, |
| &out_chunk_alias, |
| out_chunk_limit, |
| source, |
| sourceLimit, |
| NULL, |
| flush, |
| err); |
| |
| /*U_BUFFER_OVERFLOW_ERROR means that the output "CHUNK" is full |
| *we will require at least another loop (it's a recoverable error) |
| */ |
| if (U_SUCCESS (*err) || (*err == U_BUFFER_OVERFLOW_ERROR)) |
| { |
| *err = U_ZERO_ERROR; |
| out_chunk_alias2 = out_chunk; |
| |
| while ((out_chunk_alias2 != out_chunk_alias) && U_SUCCESS (*err)) |
| { |
| ucnv_fromUnicode (outConverter, |
| target, |
| targetLimit, |
| &out_chunk_alias2, |
| out_chunk_alias, |
| NULL, |
| TRUE, |
| err); |
| } |
| } |
| else |
| break; |
| } |
| |
| return; |
| } |
| |
| int32_t ucnv_convert(const char *toConverterName, |
| const char *fromConverterName, |
| char *target, |
| int32_t targetSize, |
| const char *source, |
| int32_t sourceSize, |
| UErrorCode * err) |
| { |
| const char *mySource = source; |
| const char *mySource_limit = source + sourceSize; |
| UConverter *inConverter; |
| UConverter *outConverter; |
| char *myTarget = target; |
| int32_t targetCapacity = 0; |
| |
| if (U_FAILURE (*err)) |
| return 0; |
| |
| if ((targetSize < 0) || (sourceSize < 0)) |
| { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| |
| /*if there is no input data, we're done */ |
| if (sourceSize == 0) |
| { |
| /*in case the caller passed an output ptr |
| *we update it |
| */ |
| return 0; |
| } |
| |
| /*create the converters */ |
| inConverter = ucnv_open (fromConverterName, err); |
| if (U_FAILURE (*err)) return 0; |
| outConverter = ucnv_open (toConverterName, err); |
| if (U_FAILURE (*err)) |
| { |
| ucnv_close (inConverter); |
| return 0; |
| } |
| |
| |
| if (targetSize > 0) |
| { |
| T_UConverter_fromCodepageToCodepage (outConverter, |
| inConverter, |
| &myTarget, |
| target + targetSize, |
| &mySource, |
| mySource_limit, |
| NULL, |
| TRUE, |
| err); |
| /*Updates targetCapacity to contain the number of bytes written to target */ |
| targetCapacity = myTarget - target; |
| } |
| |
| /* If the output buffer is exhausted (or we are "pre-flighting"), we need to stop writing |
| * to it but continue the conversion in order to store in targetSize |
| * the number of bytes that was required*/ |
| if (*err == U_BUFFER_OVERFLOW_ERROR || targetSize == 0) |
| { |
| char target2[CHUNK_SIZE]; |
| char *target2_alias = target2; |
| const char *target2_limit = target2 + CHUNK_SIZE; |
| |
| /*We use a stack allocated buffer around which we loop |
| *(in case the output is greater than CHUNK_SIZE) |
| */ |
| |
| do |
| { |
| *err = U_ZERO_ERROR; |
| target2_alias = target2; |
| T_UConverter_fromCodepageToCodepage (outConverter, |
| inConverter, |
| &target2_alias, |
| target2_limit, |
| &mySource, |
| mySource_limit, |
| NULL, |
| TRUE, |
| err); |
| |
| /*updates the output parameter to contain the number of char required */ |
| targetCapacity += (target2_alias - target2); |
| } while (*err == U_BUFFER_OVERFLOW_ERROR); |
| |
| /*We will set the error code to U_BUFFER_OVERFLOW_ERROR only if |
| *nothing graver happened in the previous loop*/ |
| if (U_SUCCESS (*err)) |
| *err = U_BUFFER_OVERFLOW_ERROR; |
| } |
| |
| ucnv_close (inConverter); |
| ucnv_close (outConverter); |
| |
| return targetCapacity; |
| } |
| |
| UConverterType ucnv_getType(const UConverter* converter) |
| { |
| return (UConverterType)converter->sharedData->staticData->conversionType; |
| } |
| |
| void ucnv_getStarters(const UConverter* converter, |
| UBool starters[256], |
| UErrorCode* err) |
| { |
| if (err == NULL || U_FAILURE(*err)) { |
| return; |
| } |
| |
| if(converter->sharedData->impl->getStarters != NULL) { |
| converter->sharedData->impl->getStarters(converter, starters, err); |
| } else { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| } |
| } |
| |
| static int32_t ucnv_getAmbiguousCCSID(const UConverter *cnv) |
| { |
| UErrorCode status = U_ZERO_ERROR; |
| int32_t i = 0; |
| int32_t ccsid = 0; |
| if (cnv == NULL) |
| { |
| return -1; |
| } |
| ccsid = ucnv_getCCSID(cnv, &status); |
| if (U_FAILURE(status)) |
| { |
| return -1; |
| } |
| for (i = 0; i < UCNV_MAX_AMBIGUOUSCCSIDS; i++) { |
| if (ccsid == UCNV_AMBIGUOUSCONVERTERS[i].ccsid) |
| { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| void ucnv_fixFileSeparator(const UConverter *cnv, |
| UChar* source, |
| int32_t sourceLength) |
| { |
| int32_t i = 0; |
| int32_t offset = 0; |
| if ((source == NULL) || (cnv == NULL)) |
| { |
| return; |
| } |
| if ((offset = ucnv_getAmbiguousCCSID(cnv)) != -1) |
| { |
| for (i = 0; i < sourceLength; i++) |
| { |
| if (source[i] == UCNV_AMBIGUOUSCONVERTERS[offset].mismapped) |
| { |
| source[i] = UCNV_AMBIGUOUSCONVERTERS[offset].replacement; |
| } |
| } |
| } |
| } |
| |
| UBool ucnv_isAmbiguous(const UConverter *cnv) |
| { |
| return (UBool)(ucnv_getAmbiguousCCSID(cnv) == -1 ? FALSE : TRUE); |
| } |
| |
| void ucnv_setFallback(UConverter *cnv, UBool usesFallback) |
| { |
| cnv->useFallback = usesFallback; |
| } |
| |
| UBool ucnv_usesFallback(const UConverter *cnv) |
| { |
| return cnv->useFallback; |
| } |
| |
| void |
| ucnv_getInvalidChars (const UConverter * converter, |
| char *errBytes, |
| int8_t * len, |
| UErrorCode * err) |
| { |
| if (err == NULL || U_FAILURE(*err)) |
| { |
| return; |
| } |
| if (len == NULL || errBytes == NULL || converter == NULL) |
| { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| if (*len < converter->invalidCharLength) |
| { |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| return; |
| } |
| if ((*len = converter->invalidCharLength) > 0) |
| { |
| uprv_memcpy (errBytes, converter->invalidCharBuffer, *len); |
| } |
| } |
| |
| void |
| ucnv_getInvalidUChars (const UConverter * converter, |
| UChar *errChars, |
| int8_t * len, |
| UErrorCode * err) |
| { |
| if (err == NULL || U_FAILURE(*err)) |
| { |
| return; |
| } |
| if (len == NULL || errChars == NULL || converter == NULL) |
| { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| if (*len < converter->invalidUCharLength) |
| { |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| return; |
| } |
| if ((*len = converter->invalidUCharLength) > 0) |
| { |
| uprv_memcpy (errChars, converter->invalidUCharBuffer, sizeof(UChar) * (*len)); |
| } |
| } |
| |
| /* |
| * Hey, Emacs, please set the following: |
| * |
| * Local Variables: |
| * indent-tabs-mode: nil |
| * End: |
| * |
| */ |
| |
