/* Return the canonical name */
static uint32_t
findTaggedConverterNum(const char *alias, const char *standard, UErrorCode *pErrorCode) {
uint32_t idx;
uint32_t listOffset;
uint32_t convNum;
UErrorCode myErr = U_ZERO_ERROR;
uint32_t tagNum = getTagNumber(standard);
/* Make a quick guess. Hopefully they used a TR22 canonical alias. */
convNum = findConverter(alias, NULL, &myErr);
if (myErr != U_ZERO_ERROR) {
*pErrorCode = myErr;
}
if (tagNum < (gMainTable.tagListSize - UCNV_NUM_HIDDEN_TAGS) && convNum < gMainTable.converterListSize) {
listOffset = gMainTable.taggedAliasArray[tagNum*gMainTable.converterListSize + convNum];
if (listOffset && isAliasInList(alias, listOffset)) {
return convNum;
}
if (myErr == U_AMBIGUOUS_ALIAS_WARNING) {
/* Uh Oh! They used an ambiguous alias.
We have to search one slice of the swiss cheese.
We search only in the requested tag, not the whole thing.
This may take a while.
*/
uint32_t convStart = (tagNum)*gMainTable.converterListSize;
uint32_t convLimit = (tagNum+1)*gMainTable.converterListSize;
for (idx = convStart; idx < convLimit; idx++) {
listOffset = gMainTable.taggedAliasArray[idx];
if (listOffset && isAliasInList(alias, listOffset)) {
return idx-convStart;
}
}
/* The standard doesn't know about the alias */
}
/* else no canonical name */
}
/* else converter or tag not found */
return UINT32_MAX;
}
/*
* Search for an standard name of an alias (what is the default name
* that this standard uses?)
* return the listOffset for gTaggedAliasLists. If it's 0,
* the it couldn't be found, but the parameters are valid.
*/
static uint32_t
findTaggedAliasListsOffset(const char* alias, const char* standard, UErrorCode* pErrorCode) {
uint32_t idx;
uint32_t listOffset;
uint32_t convNum;
UErrorCode myErr = U_ZERO_ERROR;
uint32_t tagNum = getTagNumber(standard);
/* Make a quick guess. Hopefully they used a TR22 canonical alias. */
convNum = findConverter(alias, NULL, &myErr);
if (myErr != U_ZERO_ERROR) {
*pErrorCode = myErr;
}
if (tagNum < (gMainTable.tagListSize - UCNV_NUM_HIDDEN_TAGS) && convNum < gMainTable.converterListSize) {
listOffset = gMainTable.taggedAliasArray[tagNum * gMainTable.converterListSize + convNum];
if (listOffset && gMainTable.taggedAliasLists[listOffset + 1]) {
return listOffset;
}
if (myErr == U_AMBIGUOUS_ALIAS_WARNING) {
/* Uh Oh! They used an ambiguous alias.
We have to search the whole swiss cheese starting
at the highest standard affinity.
This may take a while.
*/
for (idx = 0; idx < gMainTable.taggedAliasArraySize; idx++) {
listOffset = gMainTable.taggedAliasArray[idx];
if (listOffset && isAliasInList(alias, listOffset)) {
uint32_t currTagNum = idx / gMainTable.converterListSize;
uint32_t currConvNum = (idx - currTagNum * gMainTable.converterListSize);
uint32_t tempListOffset = gMainTable.taggedAliasArray[tagNum * gMainTable.converterListSize +
currConvNum];
if (tempListOffset && gMainTable.taggedAliasLists[tempListOffset + 1]) {
return tempListOffset;
}
/* else keep on looking */
/* We could speed this up by starting on the next row
because an alias is unique per row, right now.
This would change if alias versioning appears. */
}
}
/* The standard doesn't know about the alias */
}
/* else no default name */
return 0;
}
/* else converter or tag not found */
return UINT32_MAX;
}
