url/url_canon_icu_alternatives_android.cc

   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
  14 namespace url {
  15
  16 // This uses the JDK's conversion function, which uses IDNA 2003, unlike the
  17 // ICU implementation.
  18 bool 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
  37 bool RegisterIcuAlternativesJni(JNIEnv* env) {
  38   return android::RegisterNativesImpl(env);
  39 }
  40
  41 }  // namespace url