00001 /* 00002 00003 Copyright (c) 2003, Arvid Norberg 00004 All rights reserved. 00005 00006 Redistribution and use in source and binary forms, with or without 00007 modification, are permitted provided that the following conditions 00008 are met: 00009 00010 * Redistributions of source code must retain the above copyright 00011 notice, this list of conditions and the following disclaimer. 00012 * Redistributions in binary form must reproduce the above copyright 00013 notice, this list of conditions and the following disclaimer in 00014 the documentation and/or other materials provided with the distribution. 00015 * Neither the name of the author nor the names of its 00016 contributors may be used to endorse or promote products derived 00017 from this software without specific prior written permission. 00018 00019 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00020 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00021 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00022 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 00023 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00024 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00025 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00026 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00027 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00028 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00029 POSSIBILITY OF SUCH DAMAGE. 00030 00031 */ 00032 00033 #ifndef TORRENT_FILE_HPP_INCLUDED 00034 #define TORRENT_FILE_HPP_INCLUDED 00035 00036 #include <memory> 00037 #include <stdexcept> 00038 00039 #ifdef _MSC_VER 00040 #pragma warning(push, 1) 00041 #endif 00042 00043 #include <boost/noncopyable.hpp> 00044 #include <boost/filesystem/path.hpp> 00045 00046 #ifdef _MSC_VER 00047 #pragma warning(pop) 00048 #endif 00049 00050 #include "libtorrent/size_type.hpp" 00051 #include "libtorrent/config.hpp" 00052 00053 namespace libtorrent 00054 { 00055 00056 struct TORRENT_EXPORT file_error: std::runtime_error 00057 { 00058 file_error(std::string const& msg): std::runtime_error(msg) {} 00059 }; 00060 00061 class TORRENT_EXPORT file: public boost::noncopyable 00062 { 00063 public: 00064 00065 class seek_mode 00066 { 00067 friend class file; 00068 private: 00069 seek_mode(int v): m_val(v) {} 00070 int m_val; 00071 }; 00072 00073 static const seek_mode begin; 00074 static const seek_mode end; 00075 00076 class open_mode 00077 { 00078 friend class file; 00079 public: 00080 00081 open_mode(): m_mask(0) {} 00082 00083 open_mode operator|(open_mode m) const 00084 { return open_mode(m.m_mask | m_mask); } 00085 00086 open_mode operator&(open_mode m) const 00087 { return open_mode(m.m_mask & m_mask); } 00088 00089 open_mode operator|=(open_mode m) 00090 { 00091 m_mask |= m.m_mask; 00092 return *this; 00093 } 00094 00095 bool operator==(open_mode m) const { return m_mask == m.m_mask; } 00096 bool operator!=(open_mode m) const { return m_mask != m.m_mask; } 00097 00098 private: 00099 00100 open_mode(int val): m_mask(val) {} 00101 int m_mask; 00102 }; 00103 00104 static const open_mode in; 00105 static const open_mode out; 00106 00107 file(); 00108 file(boost::filesystem::path const& p, open_mode m); 00109 ~file(); 00110 00111 void open(boost::filesystem::path const& p, open_mode m); 00112 void close(); 00113 00114 size_type write(const char*, size_type num_bytes); 00115 size_type read(char*, size_type num_bytes); 00116 00117 size_type seek(size_type pos, seek_mode m = begin); 00118 size_type tell(); 00119 00120 private: 00121 00122 struct impl; 00123 const std::auto_ptr<impl> m_impl; 00124 00125 }; 00126 00127 } 00128 00129 #endif // TORRENT_FILE_HPP_INCLUDED 00130
1.5.6