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
14 namespace base {
15 namespace android {
16
WriteFileAtomically(JNIEnv * env,jclass,jstring file_name,jbyteArray data)17 static 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
RegisterImportantFileWriterAndroid(JNIEnv * env)37 bool RegisterImportantFileWriterAndroid(JNIEnv* env) {
38 return RegisterNativesImpl(env);
39 }
40
41 } // namespace android
42 } // namespace base
43