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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ANDROID_BASE_FILE_H
     18 #define ANDROID_BASE_FILE_H
     19 
     20 #include <sys/stat.h>
     21 #include <string>
     22 
     23 #if !defined(_WIN32) && !defined(O_BINARY)
     24 #define O_BINARY 0
     25 #endif
     26 
     27 namespace android {
     28 namespace base {
     29 
     30 bool ReadFdToString(int fd, std::string* content);
     31 bool ReadFileToString(const std::string& path, std::string* content);
     32 
     33 bool WriteStringToFile(const std::string& content, const std::string& path);
     34 bool WriteStringToFd(const std::string& content, int fd);
     35 
     36 #if !defined(_WIN32)
     37 bool WriteStringToFile(const std::string& content, const std::string& path,
     38                        mode_t mode, uid_t owner, gid_t group);
     39 #endif
     40 
     41 bool ReadFully(int fd, void* data, size_t byte_count);
     42 bool WriteFully(int fd, const void* data, size_t byte_count);
     43 
     44 bool RemoveFileIfExists(const std::string& path, std::string* err = nullptr);
     45 
     46 }  // namespace base
     47 }  // namespace android
     48 
     49 #endif // ANDROID_BASE_FILE_H
     50