13 class file_not_found: public std::runtime_error
16 file_not_found(const std::string &fn): std::runtime_error(fn) { }
17 ~file_not_found() throw() override = default;
20 class file_already_exists: public std::runtime_error
23 file_already_exists(const std::string &fn): std::runtime_error(fn) { }
24 ~file_already_exists() throw() override = default;
29 A class for reading and writing files.
31 Non-blocking mode is not supported on Win32.
33 class File: public Seekable
41 C_OVERWRITE = C_CREATE+C_TRUNCATE,
43 C_NEW = C_CREATE+C_EXCLUSIVE
50 /** Creates a new file object and opens it. If the create flag is set and
51 write access is requested and the file does exist, it is created. Otherwise
52 a missing file is an error. */
53 File(const std::string &, Mode = M_READ, CreateMode = C_OVERWRITE);
55 void platform_init(const std::string &, CreateMode);
59 void set_block(bool) override;
60 void set_inherit(bool) override;
63 std::size_t do_write(const char *, std::size_t) override;
64 std::size_t do_read(char *, std::size_t) override;
69 SeekOffset seek(SeekOffset, SeekType) override;
70 SeekOffset tell() const override;
72 const Handle &get_handle(Mode) override;
75 inline File::CreateMode operator|(File::CreateMode m, File::CreateMode n)
76 { return File::CreateMode(static_cast<int>(m)|static_cast<int>(n)); }
78 inline File::CreateMode operator&(File::CreateMode m, File::CreateMode n)
79 { return File::CreateMode(static_cast<int>(m)&static_cast<int>(n)); }
81 inline File::CreateMode operator~(File::CreateMode m)
82 { return File::CreateMode(~static_cast<int>(m)); }
85 class BufferedFile: public Seekable
93 BufferedFile(const std::string &, Mode = M_READ, File::CreateMode = File::C_OVERWRITE);
95 void set_block(bool) override;
96 void set_inherit(bool) override;
99 std::size_t do_write(const char *, std::size_t) override;
100 std::size_t do_read(char *, std::size_t) override;
102 std::size_t put(char) override;
104 bool getline(std::string &) override;
107 const Handle &get_handle(Mode) override;
109 SeekOffset seek(SeekOffset, SeekType) override;
110 SeekOffset tell() const override { return position; }