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ICU-1439 implement ucnv_getUnicodeSet() for roundtrippable code points

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X-SVN-Rev: 11468
This commit is contained in:
George Rhoten 2003-04-07 23:50:30 +00:00
parent 2f7f7b2fcf
commit 9417adfb33
1 changed files with 34 additions and 1 deletions
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35
icu4c/source/common/ucnvisci.c
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@ -25,6 +25,7 @@
#include "unicode/ucnv.h"
#include "ucnv_cnv.h"
#include "unicode/ucnv_cb.h"
#include "unicode/uset.h"
#include "cstring.h"
#define UCNV_OPTIONS_VERSION_MASK 0xf
@ -1451,6 +1452,37 @@ _ISCII_SafeClone(const UConverter *cnv,
return &localClone->cnv;
}
static void
_ISCIIGetUnicodeSet(const UConverter *cnv,
USet *set,
UConverterUnicodeSet which,
UErrorCode *pErrorCode)
{
int32_t idx;
int32_t fromUnicodeDelta;
uint8_t offset;
if (cnv->options > MALAYALAM) {
/* sanity check */
*pErrorCode = U_UNSUPPORTED_ERROR;
return;
}
fromUnicodeDelta = ((UConverterDataISCII*)(cnv->extraInfo))->currentDeltaFromUnicode;
offset = (uint8_t)(cnv->options - (cnv->options >= KANNADA)); /* Kannada and Telegu are merged */
for (idx = 0; idx < DELTA; idx++) {
if ((validityTable[idx] << offset) & DELTA) {
uset_add(set, fromUnicodeTable[idx] + fromUnicodeDelta + INDIC_BLOCK_BEGIN - ASCII_END);
}
}
if (cnv->options <= ORIYA) {
uset_add(set, DANDA);
uset_add(set, DOUBLE_DANDA);
}
uset_addRange(set, 0, ASCII_END);
uset_add(set, ZWNJ);
uset_add(set, ZWJ);
}
static const UConverterImpl _ISCIIImpl={
UCNV_ISCII,
@ -1471,7 +1503,8 @@ static const UConverterImpl _ISCIIImpl={
NULL,
_ISCIIgetName,
NULL,
_ISCII_SafeClone
_ISCII_SafeClone,
_ISCIIGetUnicodeSet
};
static const UConverterStaticData _ISCIIStaticData={