U_CDECL_BEGIN
/* sorting by Unicode first sorts mappings directly */
static int32_t U_CALLCONV
compareMappingsUnicodeFirst(const void *context, const void *left, const void *right) {
return compareMappings(
(UCMTable *)context, (const UCMapping *)left,
(UCMTable *)context, (const UCMapping *)right, TRUE);
}
/* sorting by bytes first sorts the reverseMap; use indirection to mappings */
static int32_t U_CALLCONV
compareMappingsBytesFirst(const void *context, const void *left, const void *right) {
UCMTable *table=(UCMTable *)context;
int32_t l=*(const int32_t *)left, r=*(const int32_t *)right;
return compareMappings(
table, table->mappings+l,
table, table->mappings+r, FALSE);
}
U_CAPI void U_EXPORT2
ucm_mergeTables(UCMTable *fromUTable, UCMTable *toUTable,
const uint8_t *subchar, int32_t subcharLength,
uint8_t subchar1) {
UCMapping *fromUMapping, *toUMapping;
int32_t fromUIndex, toUIndex, fromUTop, toUTop, cmp;
ucm_sortTable(fromUTable);
ucm_sortTable(toUTable);
fromUMapping=fromUTable->mappings;
toUMapping=toUTable->mappings;
fromUTop=fromUTable->mappingsLength;
toUTop=toUTable->mappingsLength;
fromUIndex=toUIndex=0;
while(fromUIndex<fromUTop && toUIndex<toUTop) {
cmp=compareMappings(fromUTable, fromUMapping, toUTable, toUMapping, TRUE);
if(cmp==0) {
/* equal: roundtrip, nothing to do (flags are initially 0) */
++fromUMapping;
++toUMapping;
++fromUIndex;
++toUIndex;
} else if(cmp<0) {
/*
* the fromU mapping does not have a toU counterpart:
* fallback Unicode->codepage
*/
if( (fromUMapping->bLen==subcharLength &&
0==uprv_memcmp(UCM_GET_BYTES(fromUTable, fromUMapping), subchar, subcharLength)) ||
(subchar1!=0 && fromUMapping->bLen==1 && fromUMapping->b.bytes[0]==subchar1)
) {
fromUMapping->f=2; /* SUB mapping */
} else {
fromUMapping->f=1; /* normal fallback */
}
++fromUMapping;
++fromUIndex;
} else {
/*
* the toU mapping does not have a fromU counterpart:
* (reverse) fallback codepage->Unicode, copy it to the fromU table
*/
/* ignore reverse fallbacks to Unicode SUB */
if(!(toUMapping->uLen==1 && (toUMapping->u==0xfffd || toUMapping->u==0x1a))) {
toUMapping->f=3; /* reverse fallback */
ucm_addMapping(fromUTable, toUMapping, UCM_GET_CODE_POINTS(toUTable, toUMapping), UCM_GET_BYTES(toUTable, toUMapping));
/* the table may have been reallocated */
fromUMapping=fromUTable->mappings+fromUIndex;
}
++toUMapping;
++toUIndex;
}
}
/* either one or both tables are exhausted */
while(fromUIndex<fromUTop) {
/* leftover fromU mappings are fallbacks */
if( (fromUMapping->bLen==subcharLength &&
0==uprv_memcmp(UCM_GET_BYTES(fromUTable, fromUMapping), subchar, subcharLength)) ||
(subchar1!=0 && fromUMapping->bLen==1 && fromUMapping->b.bytes[0]==subchar1)
) {
fromUMapping->f=2; /* SUB mapping */
} else {
fromUMapping->f=1; /* normal fallback */
}
++fromUMapping;
++fromUIndex;
}
while(toUIndex<toUTop) {
/* leftover toU mappings are reverse fallbacks */
/* ignore reverse fallbacks to Unicode SUB */
if(!(toUMapping->uLen==1 && (toUMapping->u==0xfffd || toUMapping->u==0x1a))) {
toUMapping->f=3; /* reverse fallback */
ucm_addMapping(fromUTable, toUMapping, UCM_GET_CODE_POINTS(toUTable, toUMapping), UCM_GET_BYTES(toUTable, toUMapping));
}
++toUMapping;
++toUIndex;
}
fromUTable->isSorted=FALSE;
}
/* sorting by Unicode first sorts mappings directly */
static int32_t
compareMappingsUnicodeFirst(const void *context, const void *left, const void *right) {
return compareMappings(
(UCMTable *)context, (const UCMapping *)left,
(UCMTable *)context, (const UCMapping *)right, TRUE);
}
