U_CAPI Resource U_EXPORT2
res_getTableItemByIndex(const ResourceData * pResData, Resource table,
int32_t indexR, const char ** key)
{
uint32_t offset = RES_GET_OFFSET(table);
int32_t length;
switch (RES_GET_TYPE(table))
{
case URES_TABLE:
{
const uint16_t * p = offset == 0 ? &gEmpty16 : (const uint16_t *)(pResData->pRoot + offset);
length = *p++;
if (indexR < length)
{
const Resource * p32 = (const Resource *)(p + length + (~length & 1));
if (key != NULL)
{
*key = RES_GET_KEY16(pResData, p[indexR]);
}
return p32[indexR];
}
break;
}
case URES_TABLE16:
{
const uint16_t * p = pResData->p16BitUnits + offset;
length = *p++;
if (indexR < length)
{
if (key != NULL)
{
*key = RES_GET_KEY16(pResData, p[indexR]);
}
return URES_MAKE_RESOURCE(URES_STRING_V2, p[length + indexR]);
}
break;
}
case URES_TABLE32:
{
const int32_t * p = offset == 0 ? &gEmpty32 : pResData->pRoot + offset;
length = *p++;
if (indexR < length)
{
if (key != NULL)
{
*key = RES_GET_KEY32(pResData, p[indexR]);
}
return (Resource)p[length + indexR];
}
break;
}
default:
break;
}
return RES_BOGUS;
}
static int32_t
_res_findTableItem(const ResourceData *pResData, const uint16_t *keyOffsets, int32_t length,
const char *key, const char **realKey) {
const char *tableKey;
int32_t mid, start, limit;
int result;
/* do a binary search for the key */
start=0;
limit=length;
while(start<limit) {
mid = (start + limit) / 2;
tableKey = RES_GET_KEY16(pResData, keyOffsets[mid]);
if (pResData->useNativeStrcmp) {
result = uprv_strcmp(key, tableKey);
} else {
result = uprv_compareInvCharsAsAscii(key, tableKey);
}
if (result < 0) {
limit = mid;
} else if (result > 0) {
start = mid + 1;
} else {
/* We found it! */
*realKey=tableKey;
return mid;
}
}
return URESDATA_ITEM_NOT_FOUND; /* not found or table is empty. */
}
