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ICU-779 add converter-specific writeSub()

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X-SVN-Rev: 3303
This commit is contained in:
Markus Scherer 2000-12-20 22:54:51 +00:00
parent b437718b77
commit 15999ba7a0
2 changed files with 21 additions and 34 deletions
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44
icu4c/source/common/ucnv_cb.c
View file

@ -21,6 +21,7 @@
#include "unicode/utypes.h"
#include "unicode/ucnv_cb.h"
#include "ucnv_bld.h"
#include "ucnv_cnv.h"
#include "cmemory.h"
/* need to update the offsets when the target moves. */
@ -201,44 +202,19 @@ void ucnv_cbFromUWriteUChars(UConverterFromUnicodeArgs *args,
void ucnv_cbFromUWriteSub (UConverterFromUnicodeArgs *args,
int32_t offsetIndex,
UErrorCode * err)
UErrorCode * err)
{
char togo[5];
int32_t togoLen;
if(U_FAILURE(*err))
{
return;
if(U_FAILURE(*err)) {
return;
}
/*In case we're dealing with a modal converter a la UCNV_EBCDIC_STATEFUL,
we need to make sure that the emitting of the substitution charater in the right mode*/
uprv_memcpy(togo, args->converter->subChar, togoLen = args->converter->subCharLen);
if (ucnv_getType(args->converter) == UCNV_EBCDIC_STATEFUL)
{
if ((args->converter->fromUnicodeStatus)&&(togoLen != 2))
{
togo[0] = UCNV_SI;
togo[1] = args->converter->subChar[0];
togo[2] = UCNV_SO;
togoLen = 3;
}
else if (!(args->converter->fromUnicodeStatus)&&(togoLen != 1))
{
togo[0] = UCNV_SO;
togo[1] = args->converter->subChar[0];
togo[2] = args->converter->subChar[1];
togo[3] = UCNV_SI;
togoLen = 4;
}
if(args->converter->sharedData->impl->writeSub!=NULL) {
args->converter->sharedData->impl->writeSub(args, offsetIndex, err);
} else {
ucnv_cbFromUWriteBytes(args,
(const char *)args->converter->subChar, args->converter->subCharLen,
offsetIndex, err);
}
/*if we have enough space on the output buffer we just copy
the subchar there and update the pointer */
ucnv_cbFromUWriteBytes(args, togo, togoLen, offsetIndex, err);
return;
}
void ucnv_cbToUWriteUChars (UConverterToUnicodeArgs *args,

11
icu4c/source/common/ucnv_cnv.h
View file

@ -160,12 +160,22 @@ typedef UChar32 (*T_GetNextUCharFunction) (UConverterToUnicodeArgs *, UErrorCode
typedef void (*UConverterGetStarters)(const UConverter* converter,
UBool starters[256],
UErrorCode *pErrorCode);
/* If this function pointer is null or if the function returns null
* the name field in static data struct should be returned by
* ucnv_getName() API function
*/
typedef const char * (*UConverterGetName) (const UConverter *cnv);
/**
* Write the codepage substitution character.
* If this function is not set, then ucnv_cbFromUWriteSub() writes
* the substitution character from UConverter.
* For stateful converters, it is typically necessary to handle this
* specificially for the converter in order to properly maintain the state.
*/
typedef void (*UConverterWriteSub) (UConverterFromUnicodeArgs *pArgs, int32_t offsetIndex, UErrorCode *pErrorCode);
UBool CONVERSION_U_SUCCESS (UErrorCode err);
void flushInternalUnicodeBuffer (UConverter * _this,
@ -216,6 +226,7 @@ struct UConverterImpl {
UConverterGetStarters getStarters;
UConverterGetName getName;
UConverterWriteSub writeSub;
};
extern const UConverterSharedData