1270 lines
35 KiB
C
1270 lines
35 KiB
C
/*
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*******************************************************************************
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*
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* Copyright (C) 1998-1999, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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*
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* ucnv.c:
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* Implements APIs for the ICU's codeset conversion library
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* mostly calls through internal functions created and maintained
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* by Bertrand A. Damiba
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*
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* Modification History:
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*
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* Date Name Description
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* 04/04/99 helena Fixed internal header inclusion.
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* 05/09/00 helena Added implementation to handle fallback mappings.
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* 06/20/2000 helena OS/400 port changes; mostly typecast.
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*/
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#include "umutex.h"
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#include "unicode/ures.h"
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#include "uhash.h"
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#include "ucnv_io.h"
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#include "unicode/ucnv_err.h"
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#include "ucnv_cnv.h"
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#include "ucnv_imp.h"
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#include "unicode/ucnv.h"
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#include "cmemory.h"
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#include "cstring.h"
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#include "unicode/ustring.h"
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#include "unicode/uloc.h"
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#include "ucnv_bld.h"
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#if 0
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/* debugging for converters */
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# include <stdio.h>
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void UCNV_DEBUG_LOG(char *what, char *who, void *p, int l)
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{
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static FILE *f = NULL;
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if(f==NULL)
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{
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f = fopen("c:\\UCNV_DEBUG_LOG.txt", "w");
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}
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fprintf(f, "%-20s %-10s %p@%d\n",
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who,what,p,l);
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fflush(f);
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}
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# define UCNV_DEBUG_LOG(x,y,z) UCNV_DEBUG_LOG(x,y,z,__LINE__)
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#else
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# define UCNV_DEBUG_LOG(x,y,z)
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#endif
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#define CHUNK_SIZE 5*1024
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/* Internal function : begin */
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static int32_t ucnv_getAmbiguousCCSID (const UConverter* cnv);
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/* Internal function : end */
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static void T_UConverter_fromCodepageToCodepage (UConverter * outConverter,
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UConverter * inConverter,
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char **target,
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const char *targetLimit,
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const char **source,
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const char *sourceLimit,
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int32_t* offsets,
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UBool flush,
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UErrorCode * err);
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const char* ucnv_getDefaultName ()
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{
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return ucnv_io_getDefaultConverterName();
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}
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void ucnv_setDefaultName (const char *converterName)
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{
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ucnv_io_setDefaultConverterName(converterName);
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}
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/*Calls through createConverter */
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UConverter* ucnv_open (const char *name,
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UErrorCode * err)
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{
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if (err == NULL || U_FAILURE (*err)) {
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return NULL;
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}
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return createConverter (name, err);
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}
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/*Extracts the UChar* to a char* and calls through createConverter */
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UConverter* ucnv_openU (const UChar * name,
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UErrorCode * err)
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{
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char asciiName[UCNV_MAX_CONVERTER_NAME_LENGTH];
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if (U_FAILURE (*err))
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return NULL;
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if (name == NULL)
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return ucnv_open (NULL, err);
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if (u_strlen (name) > UCNV_MAX_CONVERTER_NAME_LENGTH)
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{
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*err = U_ILLEGAL_ARGUMENT_ERROR;
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return NULL;
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}
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return ucnv_open (u_austrcpy (asciiName, name), err);
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}
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/*Assumes a $platform-#codepage.$CONVERTER_FILE_EXTENSION scheme and calls
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*through createConverter*/
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UConverter* ucnv_openCCSID (int32_t codepage,
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UConverterPlatform platform,
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UErrorCode * err)
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{
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char myName[UCNV_MAX_CONVERTER_NAME_LENGTH];
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if (U_FAILURE (*err))
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return NULL;
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copyPlatformString (myName, platform);
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uprv_strcat (myName, "-");
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T_CString_integerToString (myName + uprv_strlen (myName), codepage, 10);
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return createConverter (myName, err);
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}
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/*Decreases the reference counter in the shared immutable section of the object
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*and frees the mutable part*/
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void ucnv_close (UConverter * converter)
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{
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/* first, notify the callback functions that the converter is closed */
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UConverterToUnicodeArgs toUArgs = {
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sizeof(UConverterToUnicodeArgs),
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TRUE,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL
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};
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UConverterFromUnicodeArgs fromUArgs = {
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sizeof(UConverterFromUnicodeArgs),
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TRUE,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL
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};
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UErrorCode errorCode;
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if (converter == NULL)
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{
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return;
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}
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toUArgs.converter = fromUArgs.converter = converter;
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errorCode = U_ZERO_ERROR;
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converter->fromCharErrorBehaviour(converter->toUContext, &toUArgs, NULL, 0, UCNV_CLOSE, &errorCode);
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errorCode = U_ZERO_ERROR;
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converter->fromUCharErrorBehaviour(converter->fromUContext, &fromUArgs, NULL, 0, 0, UCNV_CLOSE, &errorCode);
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if (converter->sharedData->impl->close != NULL) {
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converter->sharedData->impl->close(converter);
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}
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if (converter->sharedData->referenceCounter != ~0) {
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umtx_lock (NULL);
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if (converter->sharedData->referenceCounter != 0) {
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converter->sharedData->referenceCounter--;
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}
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umtx_unlock (NULL);
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}
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uprv_free (converter);
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return;
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}
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/*Frees all shared immutable objects that aren't referred to (reference count = 0)
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*/
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int32_t ucnv_flushCache ()
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{
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UConverterSharedData *mySharedData = NULL;
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int32_t pos = -1;
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int32_t tableDeletedNum = 0;
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const UHashElement *e;
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/*if shared data hasn't even been lazy evaluated yet
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* return 0
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*/
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if (SHARED_DATA_HASHTABLE == NULL)
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return 0;
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/*creates an enumeration to iterate through every element in the
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*table
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*/
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umtx_lock (NULL);
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while ((e = uhash_nextElement (SHARED_DATA_HASHTABLE, &pos)) != NULL)
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{
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mySharedData = (UConverterSharedData *) e->value;
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/*deletes only if reference counter == 0 */
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if (mySharedData->referenceCounter == 0)
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{
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tableDeletedNum++;
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UCNV_DEBUG_LOG("del",mySharedData->staticData->name,mySharedData);
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uhash_removeElement(SHARED_DATA_HASHTABLE, e);
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deleteSharedConverterData (mySharedData);
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}
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}
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umtx_unlock (NULL);
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return tableDeletedNum;
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}
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/*returns a single Name from the list, will return NULL if out of bounds
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*/
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const char* ucnv_getAvailableName (int32_t n)
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{
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if (0 <= n && n <= 0xffff) {
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UErrorCode err = U_ZERO_ERROR;
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const char *name = ucnv_io_getAvailableConverter((uint16_t)n, &err);
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if (U_SUCCESS(err)) {
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return name;
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}
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}
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return NULL;
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}
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int32_t ucnv_countAvailable ()
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{
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UErrorCode err = U_ZERO_ERROR;
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return ucnv_io_countAvailableConverters(&err);
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}
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U_CAPI uint16_t
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ucnv_countAliases(const char *alias, UErrorCode *pErrorCode) {
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const char *p;
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return ucnv_io_getAliases(alias, &p, pErrorCode);
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}
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U_CAPI const char *
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ucnv_getAlias(const char *alias, uint16_t n, UErrorCode *pErrorCode) {
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return ucnv_io_getAlias(alias, n, pErrorCode);
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}
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U_CAPI void
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ucnv_getAliases(const char *alias, const char **aliases, UErrorCode *pErrorCode) {
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const char *p;
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uint16_t count=ucnv_io_getAliases(alias, &p, pErrorCode);
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while(count>0) {
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*aliases++=p;
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/* skip a name, first the canonical converter name */
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p+=uprv_strlen(p)+1;
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--count;
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}
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}
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U_CAPI uint16_t
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ucnv_countStandards(void) {
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UErrorCode err = U_ZERO_ERROR;
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return ucnv_io_countStandards(&err);
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}
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void ucnv_getSubstChars (const UConverter * converter,
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char *mySubChar,
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int8_t * len,
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UErrorCode * err)
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{
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if (U_FAILURE (*err))
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return;
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if (*len < converter->subCharLen) /*not enough space in subChars */
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{
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*err = U_INDEX_OUTOFBOUNDS_ERROR;
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return;
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}
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uprv_memcpy (mySubChar, converter->subChar, converter->subCharLen); /*fills in the subchars */
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*len = converter->subCharLen; /*store # of bytes copied to buffer */
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return;
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}
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void ucnv_setSubstChars (UConverter * converter,
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const char *mySubChar,
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int8_t len,
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UErrorCode * err)
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{
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if (U_FAILURE (*err))
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return;
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/*Makes sure that the subChar is within the codepages char length boundaries */
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if ((len > converter->sharedData->staticData->maxBytesPerChar)
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|| (len < converter->sharedData->staticData->minBytesPerChar))
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{
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*err = U_ILLEGAL_ARGUMENT_ERROR;
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return;
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}
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uprv_memcpy (converter->subChar, mySubChar, len); /*copies the subchars */
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converter->subCharLen = len; /*sets the new len */
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return;
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}
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int32_t ucnv_getDisplayName (const UConverter * converter,
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const char *displayLocale,
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UChar * displayName,
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int32_t displayNameCapacity,
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UErrorCode * err)
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{
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UChar stringToWriteBuffer[UCNV_MAX_CONVERTER_NAME_LENGTH];
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UChar const *stringToWrite;
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int32_t stringToWriteLength;
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UResourceBundle *rb = NULL;
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if (U_FAILURE (*err))
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return 0;
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/*create an RB, init the fill-in string, gets it from the RB */
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rb = ures_open (NULL, displayLocale, err);
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stringToWrite = ures_getStringByKey(rb,
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converter->sharedData->staticData->name,
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&stringToWriteLength,
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err);
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if (rb)
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ures_close (rb);
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if(U_FAILURE(*err))
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{
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/*Error While creating or getting resource from the resource bundle
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*use the internal name instead
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*
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*sets stringToWriteLength (which accounts for a NULL terminator)
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*and stringToWrite
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*/
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stringToWriteLength = uprv_strlen (converter->sharedData->staticData->name) + 1;
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stringToWrite = u_uastrcpy (stringToWriteBuffer, converter->sharedData->staticData->name);
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/*Hides the fallback to the internal name from the user */
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if (*err == U_MISSING_RESOURCE_ERROR)
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*err = U_ZERO_ERROR;
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}
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/*At this point we have a displayName and its length
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*we want to see if it fits in the user provided params
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*/
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if (stringToWriteLength <= displayNameCapacity)
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{
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/*it fits */
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u_strcpy (displayName, stringToWrite);
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}
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else
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{
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/*it doesn't fit */
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*err = U_BUFFER_OVERFLOW_ERROR;
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u_strncpy (displayName, stringToWrite, displayNameCapacity);
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/*Zero terminates the string */
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if (displayNameCapacity > 0)
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displayName[displayNameCapacity - 1] = 0x0000;
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}
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/*if the user provided us with a with an outputLength
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*buffer we'll store in it the theoretical size of the
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*displayString
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*/
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return stringToWriteLength;
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}
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/*resets the internal states of a converter
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*goal : have the same behaviour than a freshly created converter
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*/
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static void _reset(UConverter *converter, UConverterResetChoice choice) {
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/* first, notify the callback functions that the converter is reset */
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UConverterToUnicodeArgs toUArgs = {
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sizeof(UConverterToUnicodeArgs),
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TRUE,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL
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};
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UConverterFromUnicodeArgs fromUArgs = {
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sizeof(UConverterFromUnicodeArgs),
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TRUE,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL
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};
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UErrorCode errorCode;
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if(converter == NULL) {
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return;
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}
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toUArgs.converter = fromUArgs.converter = converter;
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if(choice<=UCNV_RESET_TO_UNICODE) {
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errorCode = U_ZERO_ERROR;
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converter->fromCharErrorBehaviour(converter->toUContext, &toUArgs, NULL, 0, UCNV_RESET, &errorCode);
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}
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if(choice!=UCNV_RESET_TO_UNICODE) {
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errorCode = U_ZERO_ERROR;
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converter->fromUCharErrorBehaviour(converter->fromUContext, &fromUArgs, NULL, 0, 0, UCNV_RESET, &errorCode);
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}
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/* now reset the converter itself */
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if(choice<=UCNV_RESET_TO_UNICODE) {
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converter->toUnicodeStatus = converter->sharedData->toUnicodeStatus;
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converter->UCharErrorBufferLength = 0;
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}
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if(choice!=UCNV_RESET_TO_UNICODE) {
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converter->fromUnicodeStatus = 0;
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converter->charErrorBufferLength = 0;
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}
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if (converter->sharedData->impl->reset != NULL) {
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/* call the custom reset function */
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converter->sharedData->impl->reset(converter, choice);
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} else if(choice<=UCNV_RESET_TO_UNICODE) {
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converter->mode = UCNV_SI;
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}
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}
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void ucnv_reset(UConverter *converter) {
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_reset(converter, UCNV_RESET_BOTH);
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}
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void ucnv_resetToUnicode(UConverter *converter) {
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_reset(converter, UCNV_RESET_TO_UNICODE);
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}
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void ucnv_resetFromUnicode(UConverter *converter) {
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_reset(converter, UCNV_RESET_FROM_UNICODE);
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}
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int8_t ucnv_getMaxCharSize (const UConverter * converter)
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{
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return converter->sharedData->staticData->maxBytesPerChar;
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}
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int8_t ucnv_getMinCharSize (const UConverter * converter)
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{
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return converter->sharedData->staticData->minBytesPerChar;
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}
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const char* ucnv_getName (const UConverter * converter, UErrorCode * err)
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{
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if (U_FAILURE (*err))
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return NULL;
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if(converter->sharedData->impl->getName){
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const char* temp= converter->sharedData->impl->getName(converter);
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if(temp)
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return temp;
|
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}
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return converter->sharedData->staticData->name;
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}
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|
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int32_t ucnv_getCCSID (const UConverter * converter,
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UErrorCode * err)
|
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{
|
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if (U_FAILURE (*err))
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return -1;
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|
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return converter->sharedData->staticData->codepage;
|
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}
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|
|
|
|
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UConverterPlatform ucnv_getPlatform (const UConverter * converter,
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UErrorCode * err)
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{
|
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if (U_FAILURE (*err))
|
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return UCNV_UNKNOWN;
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|
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return (UConverterPlatform)converter->sharedData->staticData->platform;
|
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}
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|
|
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U_CAPI void U_EXPORT2
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ucnv_getToUCallBack (const UConverter * converter,
|
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UConverterToUCallback *action,
|
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void **context)
|
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{
|
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*action = converter->fromCharErrorBehaviour;
|
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*context = converter->toUContext;
|
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}
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|
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U_CAPI void U_EXPORT2
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ucnv_getFromUCallBack (const UConverter * converter,
|
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UConverterFromUCallback *action,
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void **context)
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{
|
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*action = converter->fromUCharErrorBehaviour;
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*context = converter->fromUContext;
|
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}
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|
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void ucnv_setToUCallBack (UConverter * converter,
|
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UConverterToUCallback newAction,
|
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void* newContext,
|
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UConverterToUCallback *oldAction,
|
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void** oldContext,
|
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UErrorCode * err)
|
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{
|
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if (U_FAILURE (*err))
|
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return;
|
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*oldAction = converter->fromCharErrorBehaviour;
|
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converter->fromCharErrorBehaviour = newAction;
|
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*oldContext = converter->toUContext;
|
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converter->toUContext = newContext;
|
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}
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|
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void ucnv_setFromUCallBack (UConverter * converter,
|
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UConverterFromUCallback newAction,
|
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void* newContext,
|
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UConverterFromUCallback *oldAction,
|
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void** oldContext,
|
|
UErrorCode * err)
|
|
{
|
|
|
|
if (U_FAILURE (*err))
|
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return;
|
|
*oldAction = converter->fromUCharErrorBehaviour;
|
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converter->fromUCharErrorBehaviour = newAction;
|
|
*oldContext = converter->fromUContext;
|
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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 {
|
|
/* there is no implementation that sets offsets, set them all to -1 */
|
|
int32_t i, targetSize = targetLimit - *target;
|
|
|
|
for (i=0; i<targetSize; i++) {
|
|
offsets[i] = -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*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 {
|
|
/* there is no implementation that sets offsets, set them all to -1 */
|
|
int32_t i, targetSize = targetLimit - *target;
|
|
|
|
for (i=0; i<targetSize; i++) {
|
|
offsets[i] = -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*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) &&
|
|
(target != 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);
|
|
if (converter->sharedData->impl->getNextUChar != NULL)
|
|
{
|
|
ch = converter->sharedData->impl->getNextUChar(&args, err);
|
|
} else {
|
|
/* default implementation */
|
|
ch = ucnv_getNextUCharFromToUImpl(&args, converter->sharedData->impl->toUnicode, FALSE, 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)
|
|
{
|
|
int8_t type = converter->sharedData->staticData->conversionType;
|
|
if(type == UCNV_MBCS) {
|
|
return _MBCSGetType(converter);
|
|
}
|
|
return (UConverterType)type;
|
|
}
|
|
|
|
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:
|
|
*
|
|
*/
|
|
|