| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2022 Vinnie Falco (vinnie.falco@gmail.com) | ||
| 3 | // | ||
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 6 | // | ||
| 7 | // Official repository: https://github.com/cppalliance/http_proto | ||
| 8 | // | ||
| 9 | |||
| 10 | #ifndef BOOST_HTTP_PROTO_FILE_STDIO_HPP | ||
| 11 | #define BOOST_HTTP_PROTO_FILE_STDIO_HPP | ||
| 12 | |||
| 13 | #include <boost/http_proto/detail/config.hpp> | ||
| 14 | #include <boost/http_proto/error.hpp> | ||
| 15 | #include <boost/http_proto/file_base.hpp> | ||
| 16 | #include <cstdio> | ||
| 17 | #include <cstdint> | ||
| 18 | |||
| 19 | namespace boost { | ||
| 20 | namespace http_proto { | ||
| 21 | |||
| 22 | /** An implementation of File which uses cstdio. | ||
| 23 | |||
| 24 | This class implements a file using the interfaces present | ||
| 25 | in the C++ Standard Library, in `<stdio>`. | ||
| 26 | */ | ||
| 27 | class file_stdio | ||
| 28 | { | ||
| 29 | std::FILE* f_ = nullptr; | ||
| 30 | |||
| 31 | public: | ||
| 32 | /** The type of the underlying file handle. | ||
| 33 | |||
| 34 | This is platform-specific. | ||
| 35 | */ | ||
| 36 | using native_handle_type = std::FILE*; | ||
| 37 | |||
| 38 | /** Destructor | ||
| 39 | |||
| 40 | If the file is open it is first closed. | ||
| 41 | */ | ||
| 42 | BOOST_HTTP_PROTO_DECL | ||
| 43 | ~file_stdio(); | ||
| 44 | |||
| 45 | /** Constructor | ||
| 46 | |||
| 47 | There is no open file initially. | ||
| 48 | */ | ||
| 49 | file_stdio() = default; | ||
| 50 | |||
| 51 | /** Constructor | ||
| 52 | |||
| 53 | The moved-from object behaves as if default constructed. | ||
| 54 | */ | ||
| 55 | BOOST_HTTP_PROTO_DECL | ||
| 56 | file_stdio( | ||
| 57 | file_stdio&& other) noexcept; | ||
| 58 | |||
| 59 | /** Assignment | ||
| 60 | |||
| 61 | The moved-from object behaves as if default constructed. | ||
| 62 | */ | ||
| 63 | BOOST_HTTP_PROTO_DECL | ||
| 64 | file_stdio& | ||
| 65 | operator=( | ||
| 66 | file_stdio&& other) noexcept; | ||
| 67 | |||
| 68 | /// Returns the native handle associated with the file. | ||
| 69 | std::FILE* | ||
| 70 | 2 | native_handle() const | |
| 71 | { | ||
| 72 | 2 | return f_; | |
| 73 | } | ||
| 74 | |||
| 75 | /** Set the native handle associated with the file. | ||
| 76 | |||
| 77 | If the file is open it is first closed. | ||
| 78 | |||
| 79 | @param f The native file handle to assign. | ||
| 80 | */ | ||
| 81 | BOOST_HTTP_PROTO_DECL | ||
| 82 | void | ||
| 83 | native_handle(std::FILE* f); | ||
| 84 | |||
| 85 | /// Returns `true` if the file is open | ||
| 86 | bool | ||
| 87 | 10 | is_open() const | |
| 88 | { | ||
| 89 | 10 | return f_ != nullptr; | |
| 90 | } | ||
| 91 | |||
| 92 | /** Close the file if open | ||
| 93 | |||
| 94 | @param ec Set to the error, if any occurred. | ||
| 95 | */ | ||
| 96 | BOOST_HTTP_PROTO_DECL | ||
| 97 | void | ||
| 98 | close(system::error_code& ec); | ||
| 99 | |||
| 100 | /** Open a file at the given path with the specified mode | ||
| 101 | |||
| 102 | @param path The utf-8 encoded path to the file | ||
| 103 | |||
| 104 | @param mode The file mode to use | ||
| 105 | |||
| 106 | @param ec Set to the error, if any occurred | ||
| 107 | */ | ||
| 108 | BOOST_HTTP_PROTO_DECL | ||
| 109 | void | ||
| 110 | open(char const* path, file_mode mode, system::error_code& ec); | ||
| 111 | |||
| 112 | /** Return the size of the open file | ||
| 113 | |||
| 114 | @param ec Set to the error, if any occurred | ||
| 115 | |||
| 116 | @return The size in bytes | ||
| 117 | */ | ||
| 118 | BOOST_HTTP_PROTO_DECL | ||
| 119 | std::uint64_t | ||
| 120 | size(system::error_code& ec) const; | ||
| 121 | |||
| 122 | /** Return the current position in the open file | ||
| 123 | |||
| 124 | @param ec Set to the error, if any occurred | ||
| 125 | |||
| 126 | @return The offset in bytes from the beginning of the file | ||
| 127 | */ | ||
| 128 | BOOST_HTTP_PROTO_DECL | ||
| 129 | std::uint64_t | ||
| 130 | pos(system::error_code& ec) const; | ||
| 131 | |||
| 132 | /** Adjust the current position in the open file | ||
| 133 | |||
| 134 | @param offset The offset in bytes from the beginning of the file | ||
| 135 | |||
| 136 | @param ec Set to the error, if any occurred | ||
| 137 | */ | ||
| 138 | BOOST_HTTP_PROTO_DECL | ||
| 139 | void | ||
| 140 | seek(std::uint64_t offset, system::error_code& ec); | ||
| 141 | |||
| 142 | /** Read from the open file | ||
| 143 | |||
| 144 | @param buffer The buffer for storing the result of the read | ||
| 145 | |||
| 146 | @param n The number of bytes to read | ||
| 147 | |||
| 148 | @param ec Set to the error, if any occurred | ||
| 149 | */ | ||
| 150 | BOOST_HTTP_PROTO_DECL | ||
| 151 | std::size_t | ||
| 152 | read(void* buffer, std::size_t n, system::error_code& ec) const; | ||
| 153 | |||
| 154 | /** Write to the open file | ||
| 155 | |||
| 156 | @param buffer The buffer holding the data to write | ||
| 157 | |||
| 158 | @param n The number of bytes to write | ||
| 159 | |||
| 160 | @param ec Set to the error, if any occurred | ||
| 161 | */ | ||
| 162 | BOOST_HTTP_PROTO_DECL | ||
| 163 | std::size_t | ||
| 164 | write(void const* buffer, std::size_t n, system::error_code& ec); | ||
| 165 | }; | ||
| 166 | |||
| 167 | } // http_proto | ||
| 168 | } // boost | ||
| 169 | |||
| 170 | #endif | ||
| 171 |