1316 lines
37 KiB
C
1316 lines
37 KiB
C
/*
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******************************************************************************
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*
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* Copyright (C) 1998-2001, 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;
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* created 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 "unicode/utypes.h"
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#include "unicode/ustring.h"
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#include "unicode/ures.h"
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#include "unicode/ucnv.h"
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#include "unicode/ucnv_err.h"
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#include "cmemory.h"
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#include "cstring.h"
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#include "umutex.h"
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#include "uhash.h"
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#include "ustr_imp.h"
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#include "ucnv_imp.h"
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#include "ucnv_io.h"
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#include "ucnv_cnv.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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/* size of intermediate and preflighting buffers in ucnv_convert() */
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#define CHUNK_SIZE 5*1024
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typedef struct UAmbiguousConverter {
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const char *name;
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const UChar variant5c;
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} UAmbiguousConverter;
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static const UAmbiguousConverter ambiguousConverters[]={
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{ "ibm-942_P120-2000", 0xa5 },
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{ "ibm-943_P130-2000", 0xa5 },
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{ "ibm-33722_P120-2000", 0xa5 },
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{ "ibm-949_P110-2000", 0x20a9 },
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{ "ibm-1363_P110-2000", 0x20a9 },
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{ "ISO_2022,locale=ko,version=0", 0x20a9 }
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};
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U_CAPI const char* U_EXPORT2
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ucnv_getDefaultName ()
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{
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return ucnv_io_getDefaultConverterName();
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}
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U_CAPI void U_EXPORT2
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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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U_CAPI UConverter* U_EXPORT2
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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 ucnv_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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U_CAPI UConverter* U_EXPORT2
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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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U_CAPI UConverter* U_EXPORT2
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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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int32_t myNameLen;
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if (U_FAILURE (*err))
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return NULL;
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ucnv_copyPlatformString (myName, platform);
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myNameLen = uprv_strlen(myName);
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myName[myNameLen++] = '-';
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myName[myNameLen] = 0;
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T_CString_integerToString (myName + myNameLen, codepage, 10);
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return ucnv_createConverter (myName, err);
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}
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/* Creating a temporary stack-based object that can be used in one thread,
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and created from a converter that is shared across threads.
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*/
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U_CAPI UConverter* U_EXPORT2
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ucnv_safeClone(const UConverter* cnv, void *stackBuffer, int32_t *pBufferSize, UErrorCode *status)
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{
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UConverter * localConverter;
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int32_t bufferSizeNeeded;
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char *stackBufferChars = (char *)stackBuffer;
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if (status == NULL || U_FAILURE(*status)){
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return 0;
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}
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if (!pBufferSize || !cnv){
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*status = U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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/* Pointers on 64-bit platforms need to be aligned
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* on a 64-bit boundry in memory.
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*/
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if (U_ALIGNMENT_OFFSET(stackBuffer) != 0) {
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int32_t offsetUp = (int32_t)U_ALIGNMENT_OFFSET_UP(stackBufferChars);
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*pBufferSize -= offsetUp;
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stackBufferChars += offsetUp;
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}
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stackBuffer = (void *)stackBufferChars;
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if (cnv->sharedData->impl->safeClone != NULL) {
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/* call the custom safeClone function for sizing */
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bufferSizeNeeded = 0;
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cnv->sharedData->impl->safeClone(cnv, stackBuffer, &bufferSizeNeeded, status);
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}
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else
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{
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bufferSizeNeeded = sizeof(UConverter);
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}
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if (*pBufferSize <= 0){ /* 'preflighting' request - set needed size into *pBufferSize */
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*pBufferSize = bufferSizeNeeded;
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return 0;
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}
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if (*pBufferSize < bufferSizeNeeded || stackBuffer == NULL)
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{
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/* allocate one here...*/
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localConverter = ucnv_createConverter (ucnv_getName (cnv, status), status);
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if (U_SUCCESS(*status))
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{
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*status = U_SAFECLONE_ALLOCATED_ERROR;
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}
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} else {
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if (cnv->sharedData->impl->safeClone != NULL) {
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/* call the custom safeClone function */
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localConverter = cnv->sharedData->impl->safeClone(cnv, stackBuffer, pBufferSize, status);
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}
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else
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{
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localConverter = (UConverter *)stackBuffer;
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uprv_memcpy(localConverter, cnv, sizeof(UConverter));
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localConverter->isCopyLocal = TRUE;
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}
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}
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return localConverter;
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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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U_CAPI void U_EXPORT2
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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->isCopyLocal){
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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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}
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return;
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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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U_CAPI const char* U_EXPORT2
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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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U_CAPI int32_t U_EXPORT2
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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 U_EXPORT2
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ucnv_countAliases(const char *alias, UErrorCode *pErrorCode)
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{
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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* U_EXPORT2
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ucnv_getAlias(const char *alias, uint16_t n, UErrorCode *pErrorCode)
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{
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return ucnv_io_getAlias(alias, n, pErrorCode);
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}
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U_CAPI void U_EXPORT2
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ucnv_getAliases(const char *alias, const char **aliases, UErrorCode *pErrorCode)
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{
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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 U_EXPORT2
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ucnv_countStandards(void)
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{
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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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U_CAPI void U_EXPORT2
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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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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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}
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U_CAPI void U_EXPORT2
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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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/*
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* There is currently (2001Feb) no separate API to set/get subChar1.
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* In order to always have subChar written after it is explicitly set,
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* we set subChar1 to 0.
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*/
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converter->subChar1 = 0;
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return;
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}
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U_CAPI int32_t U_EXPORT2
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ucnv_getDisplayName(const UConverter *cnv,
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const char *displayLocale,
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UChar *displayName, int32_t displayNameCapacity,
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UErrorCode *pErrorCode) {
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UResourceBundle *rb;
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const UChar *name;
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int32_t length;
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/* check arguments */
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if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
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return 0;
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}
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if(cnv==NULL || displayNameCapacity<0 || (displayNameCapacity>0 && displayName==NULL)) {
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*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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/* open the resource bundle and get the display name string */
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rb=ures_open(NULL, displayLocale, pErrorCode);
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if(U_FAILURE(*pErrorCode)) {
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return 0;
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}
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/* use the internal name as the key */
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name=ures_getStringByKey(rb, cnv->sharedData->staticData->name, &length, pErrorCode);
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ures_close(rb);
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if(U_SUCCESS(*pErrorCode)) {
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/* copy the string */
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u_memcpy(displayName, name, uprv_min(length, displayNameCapacity)*U_SIZEOF_UCHAR);
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} else {
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/* convert the internal name into a Unicode string */
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*pErrorCode=U_ZERO_ERROR;
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length=uprv_strlen(cnv->sharedData->staticData->name);
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u_charsToUChars(cnv->sharedData->staticData->name, displayName, uprv_min(length, displayNameCapacity));
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}
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return u_terminateUChars(displayName, displayNameCapacity, length, pErrorCode);
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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->toULength = 0;
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converter->invalidCharLength = 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->fromUSurrogateLead = 0;
|
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converter->invalidUCharLength = converter->charErrorBufferLength = 0;
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}
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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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|
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U_CAPI void U_EXPORT2
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ucnv_reset(UConverter *converter)
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{
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_reset(converter, UCNV_RESET_BOTH);
|
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}
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|
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U_CAPI void U_EXPORT2
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ucnv_resetToUnicode(UConverter *converter)
|
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{
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_reset(converter, UCNV_RESET_TO_UNICODE);
|
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}
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|
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U_CAPI void U_EXPORT2
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ucnv_resetFromUnicode(UConverter *converter)
|
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{
|
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_reset(converter, UCNV_RESET_FROM_UNICODE);
|
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}
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|
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U_CAPI int8_t U_EXPORT2
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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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|
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|
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U_CAPI int8_t U_EXPORT2
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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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|
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U_CAPI const char* U_EXPORT2
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ucnv_getName (const UConverter * converter, UErrorCode * err)
|
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|
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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){
|
|
const char* temp= converter->sharedData->impl->getName(converter);
|
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if(temp)
|
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return temp;
|
|
}
|
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return converter->sharedData->staticData->name;
|
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}
|
|
|
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U_CAPI int32_t U_EXPORT2
|
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ucnv_getCCSID (const UConverter * converter,
|
|
UErrorCode * err)
|
|
{
|
|
if (U_FAILURE (*err))
|
|
return -1;
|
|
|
|
return converter->sharedData->staticData->codepage;
|
|
}
|
|
|
|
|
|
U_CAPI UConverterPlatform U_EXPORT2
|
|
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,
|
|
const void **context)
|
|
{
|
|
*action = converter->fromCharErrorBehaviour;
|
|
*context = converter->toUContext;
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
ucnv_getFromUCallBack (const UConverter * converter,
|
|
UConverterFromUCallback *action,
|
|
const void **context)
|
|
{
|
|
*action = converter->fromUCharErrorBehaviour;
|
|
*context = converter->fromUContext;
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
ucnv_setToUCallBack (UConverter * converter,
|
|
UConverterToUCallback newAction,
|
|
const void* newContext,
|
|
UConverterToUCallback *oldAction,
|
|
const void** oldContext,
|
|
UErrorCode * err)
|
|
{
|
|
if (U_FAILURE (*err))
|
|
return;
|
|
if (oldAction) *oldAction = converter->fromCharErrorBehaviour;
|
|
converter->fromCharErrorBehaviour = newAction;
|
|
if (oldContext) *oldContext = converter->toUContext;
|
|
converter->toUContext = newContext;
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
ucnv_setFromUCallBack (UConverter * converter,
|
|
UConverterFromUCallback newAction,
|
|
const void* newContext,
|
|
UConverterFromUCallback *oldAction,
|
|
const void** oldContext,
|
|
UErrorCode * err)
|
|
{
|
|
if (U_FAILURE (*err))
|
|
return;
|
|
if (oldAction) *oldAction = converter->fromUCharErrorBehaviour;
|
|
converter->fromUCharErrorBehaviour = newAction;
|
|
if (oldContext) *oldContext = converter->fromUContext;
|
|
converter->fromUContext = newContext;
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
ucnv_fromUnicode (UConverter * _this,
|
|
char **target,
|
|
const char *targetLimit,
|
|
const UChar ** source,
|
|
const UChar * sourceLimit,
|
|
int32_t* offsets,
|
|
UBool flush,
|
|
UErrorCode * err)
|
|
{
|
|
UConverterFromUnicodeArgs args;
|
|
const char *t;
|
|
|
|
/*
|
|
* Check parameters in for all conversions
|
|
*/
|
|
if (err == NULL || U_FAILURE (*err)) {
|
|
return;
|
|
}
|
|
|
|
if (_this == NULL || target == NULL || source == NULL) {
|
|
*err = U_ILLEGAL_ARGUMENT_ERROR;
|
|
return;
|
|
}
|
|
|
|
t = *target;
|
|
if (targetLimit < t || sourceLimit < *source)
|
|
{
|
|
*err = U_ILLEGAL_ARGUMENT_ERROR;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Make sure that the target buffer size does not exceed the number range for int32_t
|
|
* because some functions use the size rather than comparing pointers.
|
|
* size_t is guaranteed to be unsigned.
|
|
*/
|
|
if((size_t)(targetLimit - t) > (size_t)0x7fffffff && targetLimit > t)
|
|
{
|
|
targetLimit = t + 0x7fffffff;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
ucnv_flushInternalCharBuffer (_this,
|
|
(char *)t,
|
|
&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;
|
|
}
|
|
|
|
|
|
|
|
U_CAPI void U_EXPORT2
|
|
ucnv_toUnicode (UConverter * _this,
|
|
UChar ** target,
|
|
const UChar * targetLimit,
|
|
const char **source,
|
|
const char *sourceLimit,
|
|
int32_t* offsets,
|
|
UBool flush,
|
|
UErrorCode * err)
|
|
{
|
|
UConverterToUnicodeArgs args;
|
|
const UChar *t;
|
|
|
|
/*
|
|
* Check parameters in for all conversions
|
|
*/
|
|
if (err == NULL || U_FAILURE (*err)) {
|
|
return;
|
|
}
|
|
|
|
if (_this == NULL || target == NULL || source == NULL) {
|
|
*err = U_ILLEGAL_ARGUMENT_ERROR;
|
|
return;
|
|
}
|
|
|
|
t = *target;
|
|
if (targetLimit < t || sourceLimit < *source) {
|
|
*err = U_ILLEGAL_ARGUMENT_ERROR;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Make sure that the target buffer size does not exceed the number range for int32_t
|
|
* because some functions use the size rather than comparing pointers.
|
|
* size_t is guaranteed to be unsigned.
|
|
*/
|
|
if((size_t)(targetLimit - t) > (size_t)0x3fffffff && targetLimit > t) {
|
|
targetLimit = t + 0x3fffffff;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
ucnv_flushInternalUnicodeBuffer (_this,
|
|
(UChar *)t,
|
|
&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;
|
|
}
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
ucnv_fromUChars(UConverter *cnv,
|
|
char *dest, int32_t destCapacity,
|
|
const UChar *src, int32_t srcLength,
|
|
UErrorCode *pErrorCode) {
|
|
const UChar *srcLimit;
|
|
char *originalDest, *destLimit;
|
|
int32_t destLength;
|
|
|
|
/* check arguments */
|
|
if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
|
|
return 0;
|
|
}
|
|
|
|
if( cnv==NULL ||
|
|
destCapacity<0 || (destCapacity>0 && dest==NULL) ||
|
|
srcLength<-1 || (srcLength!=0 && src==NULL)
|
|
) {
|
|
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
/* initialize */
|
|
ucnv_resetFromUnicode(cnv);
|
|
originalDest=dest;
|
|
if(srcLength==-1) {
|
|
srcLength=u_strlen(src);
|
|
}
|
|
if(srcLength>0) {
|
|
srcLimit=src+srcLength;
|
|
destLimit=dest+destCapacity;
|
|
|
|
/* pin the destination limit to U_MAX_PTR; NULL check is for OS/400 */
|
|
if(destLimit<dest || (destLimit==NULL && dest!=NULL)) {
|
|
destLimit=(char *)U_MAX_PTR(dest);
|
|
}
|
|
|
|
/* perform the conversion */
|
|
ucnv_fromUnicode(cnv, &dest, destLimit, &src, srcLimit, 0, TRUE, pErrorCode);
|
|
destLength=(int32_t)(dest-originalDest);
|
|
|
|
/* if an overflow occurs, then get the preflighting length */
|
|
if(*pErrorCode==U_BUFFER_OVERFLOW_ERROR) {
|
|
char buffer[1024];
|
|
|
|
destLimit=buffer+sizeof(buffer);
|
|
do {
|
|
dest=buffer;
|
|
*pErrorCode=U_ZERO_ERROR;
|
|
ucnv_fromUnicode(cnv, &dest, destLimit, &src, srcLimit, 0, TRUE, pErrorCode);
|
|
destLength+=(int32_t)(dest-buffer);
|
|
} while(*pErrorCode==U_BUFFER_OVERFLOW_ERROR);
|
|
}
|
|
} else {
|
|
destLength=0;
|
|
}
|
|
|
|
return u_terminateChars(originalDest, destCapacity, destLength, pErrorCode);
|
|
}
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
ucnv_toUChars(UConverter *cnv,
|
|
UChar *dest, int32_t destCapacity,
|
|
const char *src, int32_t srcLength,
|
|
UErrorCode *pErrorCode) {
|
|
const char *srcLimit;
|
|
UChar *originalDest, *destLimit;
|
|
int32_t destLength;
|
|
|
|
/* check arguments */
|
|
if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
|
|
return 0;
|
|
}
|
|
|
|
if( cnv==NULL ||
|
|
destCapacity<0 || (destCapacity>0 && dest==NULL) ||
|
|
srcLength<-1 || (srcLength!=0 && src==NULL))
|
|
{
|
|
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
/* initialize */
|
|
ucnv_resetToUnicode(cnv);
|
|
originalDest=dest;
|
|
if(srcLength==-1) {
|
|
srcLength=uprv_strlen(src);
|
|
}
|
|
if(srcLength>0) {
|
|
srcLimit=src+srcLength;
|
|
destLimit=dest+destCapacity;
|
|
|
|
/* pin the destination limit to U_MAX_PTR; NULL check is for OS/400 */
|
|
if(destLimit<dest || (destLimit==NULL && dest!=NULL)) {
|
|
destLimit=(UChar *)U_MAX_PTR(dest);
|
|
}
|
|
|
|
/* perform the conversion */
|
|
ucnv_toUnicode(cnv, &dest, destLimit, &src, srcLimit, 0, TRUE, pErrorCode);
|
|
destLength=(int32_t)(dest-originalDest);
|
|
|
|
/* if an overflow occurs, then get the preflighting length */
|
|
if(*pErrorCode==U_BUFFER_OVERFLOW_ERROR)
|
|
{
|
|
UChar buffer[1024];
|
|
|
|
destLimit=buffer+sizeof(buffer)/U_SIZEOF_UCHAR;
|
|
do {
|
|
dest=buffer;
|
|
*pErrorCode=U_ZERO_ERROR;
|
|
ucnv_toUnicode(cnv, &dest, destLimit, &src, srcLimit, 0, TRUE, pErrorCode);
|
|
destLength+=(int32_t)(dest-buffer);
|
|
}
|
|
while(*pErrorCode==U_BUFFER_OVERFLOW_ERROR);
|
|
}
|
|
} else {
|
|
destLength=0;
|
|
}
|
|
|
|
return u_terminateUChars(originalDest, destCapacity, destLength, pErrorCode);
|
|
}
|
|
|
|
U_CAPI UChar32 U_EXPORT2
|
|
ucnv_getNextUChar(UConverter * converter,
|
|
const char **source,
|
|
const char *sourceLimit,
|
|
UErrorCode * err)
|
|
{
|
|
UConverterToUnicodeArgs args;
|
|
UChar32 ch;
|
|
|
|
if(err == NULL || U_FAILURE(*err)) {
|
|
return 0xffff;
|
|
}
|
|
|
|
if(converter == NULL || source == NULL || sourceLimit < *source) {
|
|
*err = U_ILLEGAL_ARGUMENT_ERROR;
|
|
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)
|
|
{
|
|
int32_t 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;
|
|
}
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
ucnv_convert(const char *toConverterName, const char *fromConverterName,
|
|
char *target, int32_t targetSize,
|
|
const char *source, int32_t sourceSize,
|
|
UErrorCode *pErrorCode) {
|
|
UChar pivotBuffer[CHUNK_SIZE];
|
|
UChar *pivot, *pivot2;
|
|
|
|
UConverter *inConverter, *outConverter;
|
|
char *myTarget;
|
|
const char *sourceLimit;
|
|
const char *targetLimit;
|
|
int32_t targetCapacity=0;
|
|
|
|
if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
|
|
return 0;
|
|
}
|
|
|
|
if(sourceSize<0 || targetSize<0 || source==NULL
|
|
|| (targetSize>0 && target==NULL))
|
|
{
|
|
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
/* if there is no input data, we're done */
|
|
if(sourceSize==0) {
|
|
return 0;
|
|
}
|
|
|
|
/* create the converters */
|
|
inConverter=ucnv_open(fromConverterName, pErrorCode);
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return 0;
|
|
}
|
|
|
|
outConverter=ucnv_open(toConverterName, pErrorCode);
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
ucnv_close(inConverter);
|
|
return 0;
|
|
}
|
|
|
|
/* set up the other variables */
|
|
sourceLimit=source+sourceSize;
|
|
pivot=pivot2=pivotBuffer;
|
|
myTarget=target;
|
|
targetCapacity=0;
|
|
|
|
if(targetSize>0) {
|
|
/* perform real conversion */
|
|
|
|
/*
|
|
* loops until the input buffer is completely consumed
|
|
* or an error is encountered;
|
|
* first we convert from inConverter codepage to Unicode
|
|
* then from Unicode to outConverter codepage
|
|
*/
|
|
targetLimit=target+targetSize;
|
|
do {
|
|
pivot=pivotBuffer;
|
|
ucnv_toUnicode(inConverter,
|
|
&pivot, pivotBuffer+CHUNK_SIZE,
|
|
&source, sourceLimit,
|
|
NULL,
|
|
TRUE,
|
|
pErrorCode);
|
|
|
|
/* U_BUFFER_OVERFLOW_ERROR only means that the pivot buffer is full */
|
|
if(U_SUCCESS(*pErrorCode) || *pErrorCode==U_BUFFER_OVERFLOW_ERROR) {
|
|
*pErrorCode=U_ZERO_ERROR;
|
|
pivot2=pivotBuffer;
|
|
ucnv_fromUnicode(outConverter,
|
|
&myTarget, targetLimit,
|
|
(const UChar **)&pivot2, pivot,
|
|
NULL,
|
|
(UBool)(source==sourceLimit),
|
|
pErrorCode);
|
|
/*
|
|
* If this overflows the real target, then we must stop
|
|
* converting and preflight with the loop below.
|
|
*/
|
|
}
|
|
} while(U_SUCCESS(*pErrorCode) && source!=sourceLimit);
|
|
|
|
targetCapacity=myTarget-target;
|
|
}
|
|
|
|
/*
|
|
* If the output buffer is exhausted (or we are only "preflighting"), 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(*pErrorCode==U_BUFFER_OVERFLOW_ERROR || targetSize==0)
|
|
{
|
|
char targetBuffer[CHUNK_SIZE];
|
|
|
|
targetLimit=targetBuffer+CHUNK_SIZE;
|
|
do {
|
|
/* since the pivot buffer may still contain some characters, start with emptying it */
|
|
*pErrorCode=U_ZERO_ERROR;
|
|
while(pivot2!=pivot && U_SUCCESS(*pErrorCode)) {
|
|
myTarget=targetBuffer;
|
|
ucnv_fromUnicode(outConverter,
|
|
&myTarget, targetLimit,
|
|
(const UChar **)&pivot2, pivot,
|
|
NULL,
|
|
(UBool)(source==sourceLimit),
|
|
pErrorCode);
|
|
targetCapacity+=(myTarget-targetBuffer);
|
|
if(*pErrorCode==U_BUFFER_OVERFLOW_ERROR) {
|
|
*pErrorCode=U_ZERO_ERROR;
|
|
}
|
|
}
|
|
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
/* an error occurred: done */
|
|
break;
|
|
}
|
|
|
|
if(source==sourceLimit) {
|
|
/*
|
|
* source is consumed:
|
|
* done, and set the buffer overflow error as
|
|
* the result for the entire function
|
|
*/
|
|
*pErrorCode=U_BUFFER_OVERFLOW_ERROR;
|
|
break;
|
|
}
|
|
|
|
/* now convert from the source into the pivot buffer again */
|
|
pivot=pivot2=pivotBuffer;
|
|
ucnv_toUnicode(inConverter,
|
|
&pivot, pivotBuffer+CHUNK_SIZE,
|
|
&source, sourceLimit,
|
|
NULL,
|
|
TRUE,
|
|
pErrorCode);
|
|
}
|
|
while(U_SUCCESS(*pErrorCode) || *pErrorCode==U_BUFFER_OVERFLOW_ERROR);
|
|
}
|
|
|
|
ucnv_close (inConverter);
|
|
ucnv_close (outConverter);
|
|
|
|
return u_terminateChars(target, targetSize, targetCapacity, pErrorCode);
|
|
}
|
|
|
|
U_CAPI UConverterType U_EXPORT2
|
|
ucnv_getType(const UConverter* converter)
|
|
{
|
|
int8_t type = converter->sharedData->staticData->conversionType;
|
|
if(type == UCNV_MBCS) {
|
|
return _MBCSGetType(converter);
|
|
}
|
|
return (UConverterType)type;
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
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 const UAmbiguousConverter *ucnv_getAmbiguous(const UConverter *cnv)
|
|
{
|
|
UErrorCode errorCode;
|
|
const char *name;
|
|
int32_t i;
|
|
|
|
if(cnv==NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
errorCode=U_ZERO_ERROR;
|
|
name=ucnv_getName(cnv, &errorCode);
|
|
if(U_FAILURE(errorCode)) {
|
|
return NULL;
|
|
}
|
|
|
|
for(i=0; i<(int32_t)(sizeof(ambiguousConverters)/sizeof(UAmbiguousConverter)); ++i)
|
|
{
|
|
if(0==uprv_strcmp(name, ambiguousConverters[i].name))
|
|
{
|
|
return ambiguousConverters+i;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
ucnv_fixFileSeparator(const UConverter *cnv,
|
|
UChar* source,
|
|
int32_t sourceLength) {
|
|
const UAmbiguousConverter *a;
|
|
int32_t i;
|
|
UChar variant5c;
|
|
|
|
if(cnv==NULL || source==NULL || sourceLength<=0 || (a=ucnv_getAmbiguous(cnv))==NULL)
|
|
{
|
|
return;
|
|
}
|
|
|
|
variant5c=a->variant5c;
|
|
for(i=0; i<sourceLength; ++i) {
|
|
if(source[i]==variant5c) {
|
|
source[i]=0x5c;
|
|
}
|
|
}
|
|
}
|
|
|
|
U_CAPI UBool U_EXPORT2
|
|
ucnv_isAmbiguous(const UConverter *cnv) {
|
|
return (UBool)(ucnv_getAmbiguous(cnv)!=NULL);
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
ucnv_setFallback(UConverter *cnv, UBool usesFallback)
|
|
{
|
|
cnv->useFallback = usesFallback;
|
|
}
|
|
|
|
U_CAPI UBool U_EXPORT2
|
|
ucnv_usesFallback(const UConverter *cnv)
|
|
{
|
|
return cnv->useFallback;
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
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);
|
|
}
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
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));
|
|
}
|
|
}
|
|
|
|
#define SIG_MAX_LEN 4
|
|
|
|
U_CAPI const char* U_EXPORT2
|
|
ucnv_detectUnicodeSignature( const char* source,
|
|
int32_t sourceLength,
|
|
int32_t* signatureLength,
|
|
UErrorCode* pErrorCode){
|
|
|
|
/* initial 0xa5 bytes: make sure that if we read <4
|
|
* bytes we don't misdetect something
|
|
*/
|
|
char start[SIG_MAX_LEN]={ '\xa5', '\xa5', '\xa5', '\xa5' };
|
|
int i = 0;
|
|
|
|
if((pErrorCode==NULL) || U_FAILURE(*pErrorCode)){
|
|
return NULL;
|
|
}
|
|
|
|
if(source == NULL || signatureLength == NULL || sourceLength < -1){
|
|
*pErrorCode = U_ILLEGAL_ARGUMENT_ERROR;
|
|
return NULL;
|
|
}
|
|
|
|
if(sourceLength==-1){
|
|
sourceLength=uprv_strlen(source);
|
|
}
|
|
|
|
|
|
while(i<sourceLength&& i<SIG_MAX_LEN){
|
|
start[i]=source[i];
|
|
i++;
|
|
}
|
|
|
|
if(start[0] == '\xFE' && start[1] == '\xFF') {
|
|
*signatureLength=2;
|
|
return "UTF-16BE";
|
|
} else if(start[0] == '\xFF' && start[1] == '\xFE') {
|
|
if(start[2] == '\x00' && start[3] =='\x00') {
|
|
*signatureLength=4;
|
|
return "UTF-32LE";
|
|
} else {
|
|
*signatureLength=2;
|
|
return "UTF-16LE";
|
|
}
|
|
} else if(start[0] == '\xEF' && start[1] == '\xBB' && start[2] == '\xBF') {
|
|
*signatureLength=3;
|
|
return "UTF-8";
|
|
} else if(start[0] == '\x00' && start[1] == '\x00' &&
|
|
start[2] == '\xFE' && start[3]=='\xFF') {
|
|
*signatureLength=4;
|
|
return "UTF-32BE";
|
|
} else if(start[0] == '\x0E' && start[1] == '\xFE' && start[2] == '\xFF') {
|
|
*signatureLength=3;
|
|
return "SCSU";
|
|
} else if(start[0] == '\xFB' && start[1] == '\xEE' && start[2] == '\x28') {
|
|
*signatureLength=3;
|
|
return "BOCU-1";
|
|
} else {
|
|
*signatureLength=0;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Hey, Emacs, please set the following:
|
|
*
|
|
* Local Variables:
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
*/
|
|
|