// returns the length of the label excluding the separator
// if *limit == separator then the length returned does not include
// the separtor.
static inline int32_t
getNextSeparator(UChar *src, int32_t srcLength,
UChar **limit, UBool *done){
if(srcLength == -1){
int32_t i;
for(i=0 ; ;i++){
if(src[i] == 0){
*limit = src + i; // point to null
*done = TRUE;
return i;
}
if(isLabelSeparator(src[i])){
*limit = src + (i+1); // go past the delimiter
return i;
}
}
}else{
int32_t i;
for(i=0;i<srcLength;i++){
if(isLabelSeparator(src[i])){
*limit = src + (i+1); // go past the delimiter
return i;
}
}
// we have not found the delimiter
// if(i==srcLength)
*limit = src+srcLength;
*done = TRUE;
return i;
}
}
static jstring NativeIDN_convertImpl(JNIEnv* env, jclass, jstring javaSrc, jint flags, jboolean toAscii) {
ScopedStringChars src(env, javaSrc);
if (src.get() == NULL) {
return NULL;
}
UChar dst[256];
UErrorCode status = U_ZERO_ERROR;
size_t resultLength = toAscii
? uidna_IDNToASCII(src.get(), src.size(), &dst[0], sizeof(dst), flags, NULL, &status)
: uidna_IDNToUnicode(src.get(), src.size(), &dst[0], sizeof(dst), flags, NULL, &status);
if (U_FAILURE(status)) {
jniThrowException(env, "java/lang/IllegalArgumentException", u_errorName(status));
return NULL;
}
if (!toAscii) {
// ICU only translates separators to ASCII for toASCII.
// Java expects the translation for toUnicode too.
// We may as well do this here, while the string is still mutable.
for (size_t i = 0; i < resultLength; ++i) {
if (isLabelSeparator(dst[i])) {
dst[i] = '.';
}
}
}
return env->NewString(&dst[0], resultLength);
}