Colobot
inputstreambuffer.h
1 /*
2  * This file is part of the Colobot: Gold Edition source code
3  * Copyright (C) 2001-2016, Daniel Roux, EPSITEC SA & TerranovaTeam
4  * http://epsitec.ch; http://colobot.info; http://github.com/colobot
5  *
6  * This program is free software: you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation, either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
14  * See the GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program. If not, see http://gnu.org/licenses
18  */
19 
20 #pragma once
21 
22 #include <cstddef>
23 #include <memory>
24 #include <streambuf>
25 #include <string>
26 
27 #include <physfs.h>
28 
29 class CInputStreamBuffer : public std::streambuf
30 {
31 public:
32  CInputStreamBuffer(std::size_t bufferSize = 512);
33  virtual ~CInputStreamBuffer();
34 
35  CInputStreamBuffer(const CInputStreamBuffer &) = delete;
36  CInputStreamBuffer &operator= (const CInputStreamBuffer &) = delete;
37 
38  void open(const std::string &filename);
39  void close();
40  bool is_open();
41  std::size_t size();
42 
43 private:
44  int_type underflow() override;
45 
46  std::streampos seekpos(std::streampos sp, std::ios_base::openmode which) override;
47  std::streampos seekoff(std::streamoff off, std::ios_base::seekdir way, std::ios_base::openmode which) override;
48 
49  const std::size_t m_bufferSize;
50  PHYSFS_File *m_file;
51  std::unique_ptr<char[]> m_buffer;
52 };
Definition: inputstreambuffer.h:29