1// Copyright 2013 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 "base/android/important_file_writer_android.h"
6
7#include <string>
8
9#include "base/android/jni_string.h"
10#include "base/files/important_file_writer.h"
11#include "base/threading/thread_restrictions.h"
12#include "jni/ImportantFileWriterAndroid_jni.h"
13
14namespace base {
15namespace android {
16
17static jboolean WriteFileAtomically(JNIEnv* env,
18                                    jclass /* clazz */,
19                                    jstring file_name,
20                                    jbyteArray data) {
21  // This is called on the UI thread during shutdown to save tab data, so
22  // needs to enable IO.
23  base::ThreadRestrictions::ScopedAllowIO allow_io;
24  std::string native_file_name;
25  base::android::ConvertJavaStringToUTF8(env, file_name, &native_file_name);
26  base::FilePath path(native_file_name);
27  int data_length = env->GetArrayLength(data);
28  jbyte* native_data = env->GetByteArrayElements(data, NULL);
29  std::string native_data_string(reinterpret_cast<char *>(native_data),
30                                 data_length);
31  bool result = base::ImportantFileWriter::WriteFileAtomically(
32      path, native_data_string);
33  env->ReleaseByteArrayElements(data, native_data, JNI_ABORT);
34  return result;
35}
36
37bool RegisterImportantFileWriterAndroid(JNIEnv* env) {
38  return RegisterNativesImpl(env);
39}
40
41}  // namespace android
42}  // namespace base
43