1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include <string.h>
6
7#include "base/android/jni_android.h"
8#include "base/android/jni_string.h"
9#include "base/strings/string16.h"
10#include "base/strings/string_piece.h"
11#include "jni/IDNStringUtil_jni.h"
12#include "url/url_canon_internal.h"
13
14namespace url {
15
16// This uses the JDK's conversion function, which uses IDNA 2003, unlike the
17// ICU implementation.
18bool IDNToASCII(const base::char16* src, int src_len, CanonOutputW* output) {
19  DCHECK_EQ(0, output->length());  // Output buffer is assumed empty.
20
21  JNIEnv* env = base::android::AttachCurrentThread();
22  base::android::ScopedJavaLocalRef<jstring> java_src =
23      base::android::ConvertUTF16ToJavaString(
24          env, base::StringPiece16(src, src_len));
25  ScopedJavaLocalRef<jstring> java_result =
26      android::Java_IDNStringUtil_idnToASCII(env, java_src.obj());
27  // NULL indicates failure.
28  if (java_result.is_null())
29    return false;
30
31  base::string16 utf16_result =
32      base::android::ConvertJavaStringToUTF16(java_result);
33  output->Append(utf16_result.data(), static_cast<int>(utf16_result.size()));
34  return true;
35}
36
37bool RegisterIcuAlternativesJni(JNIEnv* env) {
38  return android::RegisterNativesImpl(env);
39}
40
41}  // namespace url
42