| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef AAPT_IO_FILESTREAM_H |
| #define AAPT_IO_FILESTREAM_H |
| |
| #include "io/Io.h" |
| |
| #include <memory> |
| #include <string> |
| |
| #include "android-base/file.h" // for O_BINARY |
| #include "android-base/macros.h" |
| #include "android-base/unique_fd.h" |
| |
| namespace aapt { |
| namespace io { |
| |
| class FileInputStream : public InputStream { |
| public: |
| explicit FileInputStream(const std::string& path, size_t buffer_capacity = 4096); |
| |
| // Takes ownership of `fd`. |
| explicit FileInputStream(int fd, size_t buffer_capacity = 4096); |
| |
| bool Next(const void** data, size_t* size) override; |
| |
| void BackUp(size_t count) override; |
| |
| size_t ByteCount() const override; |
| |
| bool HadError() const override; |
| |
| std::string GetError() const override; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(FileInputStream); |
| |
| android::base::unique_fd fd_; |
| std::string error_; |
| std::unique_ptr<uint8_t[]> buffer_; |
| size_t buffer_capacity_; |
| size_t buffer_offset_; |
| size_t buffer_size_; |
| size_t total_byte_count_; |
| }; |
| |
| class FileOutputStream : public OutputStream { |
| public: |
| explicit FileOutputStream(const std::string& path, int mode = O_RDWR | O_CREAT | O_BINARY, |
| size_t buffer_capacity = 4096); |
| |
| // Takes ownership of `fd`. |
| explicit FileOutputStream(int fd, size_t buffer_capacity = 4096); |
| |
| ~FileOutputStream(); |
| |
| bool Next(void** data, size_t* size) override; |
| |
| // Immediately flushes out the contents of the buffer to disk. |
| bool Flush(); |
| |
| void BackUp(size_t count) override; |
| |
| size_t ByteCount() const override; |
| |
| bool HadError() const override; |
| |
| std::string GetError() const override; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(FileOutputStream); |
| |
| bool FlushImpl(); |
| |
| android::base::unique_fd fd_; |
| std::string error_; |
| std::unique_ptr<uint8_t[]> buffer_; |
| size_t buffer_capacity_; |
| size_t buffer_offset_; |
| size_t total_byte_count_; |
| }; |
| |
| } // namespace io |
| } // namespace aapt |
| |
| #endif // AAPT_IO_FILESTREAM_H |