U_CAPI int32_t U_EXPORT2
uidna_toUnicode(const UChar* src, int32_t srcLength,
UChar* dest, int32_t destCapacity,
int32_t options,
UParseError* parseError,
UErrorCode* status){
if(status == NULL || U_FAILURE(*status)){
return 0;
}
if( (src==NULL) || (srcLength < -1) || (destCapacity<0) || (!dest && destCapacity > 0)){
*status = U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
UStringPrepProfile* nameprep = usprep_openByType(USPREP_RFC3491_NAMEPREP, status);
if(U_FAILURE(*status)){
return -1;
}
int32_t retLen = _internal_toUnicode(src, srcLength, dest, destCapacity, options, nameprep, parseError, status);
usprep_close(nameprep);
return retLen;
}
U_CAPI int32_t U_EXPORT2
uidna_IDNToUnicode( const UChar* src, int32_t srcLength,
UChar* dest, int32_t destCapacity,
int32_t options,
UParseError* parseError,
UErrorCode* status){
if(status == NULL || U_FAILURE(*status)){
return 0;
}
if((src==NULL) || (srcLength < -1) || (destCapacity<0) || (!dest && destCapacity > 0)){
*status = U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
int32_t reqLength = 0;
UStringPrepProfile* nameprep = usprep_openByType(USPREP_RFC3491_NAMEPREP, status);
if(U_FAILURE(*status)){
return 0;
}
//initialize pointers
UChar *delimiter = (UChar*)src;
UChar *labelStart = (UChar*)src;
UChar *currentDest = (UChar*) dest;
int32_t remainingLen = srcLength;
int32_t remainingDestCapacity = destCapacity;
int32_t labelLen = 0, labelReqLength = 0;
UBool done = FALSE;
for(;;){
labelLen = getNextSeparator(labelStart,remainingLen, &delimiter,&done);
// The RFC states that
// <quote>
// ToUnicode never fails. If any step fails, then the original input
// is returned immediately in that step.
// </quote>
// _internal_toUnicode will copy the label.
/*if(labelLen==0 && done==FALSE){
*status = U_IDNA_ZERO_LENGTH_LABEL_ERROR;
break;
}*/
labelReqLength = _internal_toUnicode(labelStart, labelLen,
currentDest, remainingDestCapacity,
options, nameprep,
parseError, status);
if(*status == U_BUFFER_OVERFLOW_ERROR){
*status = U_ZERO_ERROR; // reset error
remainingDestCapacity = 0;
}
if(U_FAILURE(*status)){
break;
}
reqLength +=labelReqLength;
// adjust the destination pointer
if(labelReqLength < remainingDestCapacity){
currentDest = currentDest + labelReqLength;
remainingDestCapacity -= labelReqLength;
}else{
// should never occur
remainingDestCapacity = 0;
}
if(done == TRUE){
break;
}
// add the label separator
// Unlike the ToASCII operation we don't normalize the label separators
if(remainingDestCapacity > 0){
*currentDest++ = *(labelStart + labelLen);
remainingDestCapacity--;
}
reqLength++;
labelStart = delimiter;
if(remainingLen >0 ){
remainingLen = (int32_t)(srcLength - (delimiter - src));
}
}
if(reqLength > MAX_DOMAIN_NAME_LENGTH){
*status = U_IDNA_DOMAIN_NAME_TOO_LONG_ERROR;
}
usprep_close(nameprep);
return u_terminateUChars(dest, destCapacity, reqLength, status);
}
U_CAPI int32_t U_EXPORT2
uidna_IDNToUnicode( const UChar* src, int32_t srcLength,
UChar* dest, int32_t destCapacity,
int32_t options,
UParseError* parseError,
UErrorCode* status) {
if(status == NULL || U_FAILURE(*status)) {
return 0;
}
if((src==NULL) || (srcLength < -1) || (destCapacity<0) || (!dest && destCapacity > 0)) {
*status = U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
int32_t reqLength = 0;
UStringPrepProfile* nameprep = usprep_open(NULL, DATA_FILE_NAME, status);
if(U_FAILURE(*status)) {
return 0;
}
//initialize pointers
UChar *delimiter = (UChar*)src;
UChar *labelStart = (UChar*)src;
UChar *currentDest = (UChar*) dest;
int32_t remainingLen = srcLength;
int32_t remainingDestCapacity = destCapacity;
int32_t labelLen = 0, labelReqLength = 0;
UBool done = FALSE;
for(;;) {
labelLen = getNextSeparator(labelStart,remainingLen, &delimiter,&done);
labelReqLength = _internal_toUnicode(labelStart, labelLen,
currentDest, remainingDestCapacity,
options, nameprep,
parseError, status);
if(*status == U_BUFFER_OVERFLOW_ERROR) {
*status = U_ZERO_ERROR; // reset error
remainingDestCapacity = 0;
}
if(U_FAILURE(*status)) {
break;
}
reqLength +=labelReqLength;
// adjust the destination pointer
if(labelReqLength < remainingDestCapacity) {
currentDest = currentDest + labelReqLength;
remainingDestCapacity -= labelReqLength;
} else {
// should never occur
remainingDestCapacity = 0;
}
if(done == TRUE) {
break;
}
// add the label separator
if(remainingDestCapacity > 0) {
*currentDest++ = FULL_STOP;
remainingDestCapacity--;
}
reqLength++;
labelStart = delimiter;
if(remainingLen >0 ) {
remainingLen = srcLength - (delimiter - src);
}
}
usprep_close(nameprep);
return u_terminateUChars(dest, destCapacity, reqLength, status);
}
