| /* |
| * Copyright 2012, 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. |
| */ |
| |
| // Defines utility allowing files for bitcode input wrapping. |
| |
| #ifndef FILE_WRAPPER_INPUT_H__ |
| #define FILE_WRAPPER_INPUT_H__ |
| |
| #include <stdio.h> |
| |
| #include "bcinfo/Wrap/support_macros.h" |
| #include "bcinfo/Wrap/wrapper_input.h" |
| |
| // Define a class to wrap named files. |
| class FileWrapperInput : public WrapperInput { |
| public: |
| FileWrapperInput(const char* _name); |
| ~FileWrapperInput(); |
| // Tries to read the requested number of bytes into the buffer. Returns the |
| // actual number of bytes read. |
| virtual size_t Read(uint8_t* buffer, size_t wanted); |
| // Returns true if at end of file. Note: May return false |
| // until Read is called, and returns 0. |
| virtual bool AtEof(); |
| // Returns the size of the file (in bytes). |
| virtual off_t Size(); |
| // Moves to the given offset within the file. Returns |
| // false if unable to move to that position. |
| virtual bool Seek(uint32_t pos); |
| private: |
| // The name of the file. |
| const char* _name; |
| // True once eof has been encountered. |
| bool _at_eof; |
| // True if size has been computed. |
| bool _size_found; |
| // The size of the file. |
| off_t _size; |
| // The corresponding (opened) file. |
| FILE* _file; |
| private: |
| DISALLOW_CLASS_COPY_AND_ASSIGN(FileWrapperInput); |
| }; |
| |
| #endif // FILE_WRAPPER_INPUT_H__ |