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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "NativeIDN"
#include "JNIHelp.h"
#include "JniConstants.h"
#include "ScopedStringChars.h"
#include "unicode/uidna.h"
static bool isLabelSeparator(const UChar ch) {
switch (ch) {
case 0x3002: // ideographic full stop
case 0xff0e: // fullwidth full stop
case 0xff61: // halfwidth ideographic full stop
return true;
default:
return false;
}
}
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;
// We're stuck implementing IDNA-2003 for now since that's what we specify.
//
// TODO: Change our spec to IDNA-2008 + UTS-46 compatibility processing if
// it's safe enough.
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
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);
#pragma GCC diagnostic pop
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);
}
static JNINativeMethod gMethods[] = {
NATIVE_METHOD(NativeIDN, convertImpl, "(Ljava/lang/String;IZ)Ljava/lang/String;"),
};
void register_libcore_icu_NativeIDN(JNIEnv* env) {
jniRegisterNativeMethods(env, "libcore/icu/NativeIDN", gMethods, NELEM(gMethods));
}
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