static int32_t U_CALLCONV
ucasemap_internalUTF8Fold(const UCaseMap *csm,
uint8_t *dest, int32_t destCapacity,
const uint8_t *src, int32_t srcLength,
UErrorCode *pErrorCode) {
return utf8_foldCase(csm->csp, dest, destCapacity, src, srcLength, csm->options, pErrorCode);
}
static int32_t
caseMap(const UCaseMap *csm,
uint8_t *dest, int32_t destCapacity,
const uint8_t *src, int32_t srcLength,
int32_t toWhichCase,
UErrorCode *pErrorCode) {
int32_t destLength;
/* check argument values */
if(U_FAILURE(*pErrorCode)) {
return 0;
}
if( destCapacity<0 ||
(dest==NULL && destCapacity>0) ||
src==NULL ||
srcLength<-1
) {
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
/* get the string length */
if(srcLength==-1) {
srcLength=(int32_t)uprv_strlen((const char *)src);
}
/* check for overlapping source and destination */
if( dest!=NULL &&
((src>=dest && src<(dest+destCapacity)) ||
(dest>=src && dest<(src+srcLength)))
) {
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
destLength=0;
if(toWhichCase==FOLD_CASE) {
destLength=utf8_foldCase(csm->csp, dest, destCapacity, src, srcLength,
csm->options, pErrorCode);
} else {
UCaseContext csc={ NULL };
csc.p=(void *)src;
csc.limit=srcLength;
if(toWhichCase==TO_LOWER) {
destLength=_caseMap(csm, ucase_toFullLower,
dest, destCapacity,
src, &csc,
0, srcLength,
pErrorCode);
} else if(toWhichCase==TO_UPPER) {
destLength=_caseMap(csm, ucase_toFullUpper,
dest, destCapacity,
src, &csc,
0, srcLength,
pErrorCode);
} else /* if(toWhichCase==TO_TITLE) */ {
#if UCONFIG_NO_BREAK_ITERATION
*pErrorCode=U_UNSUPPORTED_ERROR;
#else
/* UCaseMap is actually non-const in toTitle() APIs. */
UCaseMap *tmp = (UCaseMap *)csm;
destLength=_toTitle(tmp, dest, destCapacity,
src, &csc, srcLength,
pErrorCode);
#endif
}
}
return u_terminateChars((char *)dest, destCapacity, destLength, pErrorCode);
}
