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|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2022 Vinnie Falco (vinnie dot falco at gmail dot 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_IMPL_FILE_STDIO_IPP | ||
| 11 | #define BOOST_HTTP_PROTO_IMPL_FILE_STDIO_IPP | ||
| 12 | |||
| 13 | #include <boost/http_proto/file_stdio.hpp> | ||
| 14 | #include <boost/http_proto/error.hpp> | ||
| 15 | #include <boost/http_proto/detail/win32_unicode_path.hpp> | ||
| 16 | #include <boost/config/workaround.hpp> | ||
| 17 | #include <boost/core/exchange.hpp> | ||
| 18 | #include <limits> | ||
| 19 | |||
| 20 | namespace boost { | ||
| 21 | namespace http_proto { | ||
| 22 | |||
| 23 | 23 | file_stdio:: | |
| 24 | 23 | ~file_stdio() | |
| 25 | { | ||
| 26 |
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23 | if(f_) |
| 27 | 11 | fclose(f_); | |
| 28 | 23 | } | |
| 29 | |||
| 30 | 1 | file_stdio:: | |
| 31 | file_stdio( | ||
| 32 | 1 | file_stdio&& other) noexcept | |
| 33 | 1 | : f_(boost::exchange(other.f_, nullptr)) | |
| 34 | { | ||
| 35 | 1 | } | |
| 36 | |||
| 37 | file_stdio& | ||
| 38 | 3 | file_stdio:: | |
| 39 | operator=( | ||
| 40 | file_stdio&& other) noexcept | ||
| 41 | { | ||
| 42 |
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3 | if(&other == this) |
| 43 | 1 | return *this; | |
| 44 |
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2 | if(f_) |
| 45 | 1 | fclose(f_); | |
| 46 | 2 | f_ = other.f_; | |
| 47 | 2 | other.f_ = nullptr; | |
| 48 | 2 | return *this; | |
| 49 | } | ||
| 50 | |||
| 51 | void | ||
| 52 | 1 | file_stdio:: | |
| 53 | native_handle(std::FILE* f) | ||
| 54 | { | ||
| 55 |
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1 | if(f_) |
| 56 | 1 | fclose(f_); | |
| 57 | 1 | f_ = f; | |
| 58 | 1 | } | |
| 59 | |||
| 60 | void | ||
| 61 | 4 | file_stdio:: | |
| 62 | close(error_code& ec) | ||
| 63 | { | ||
| 64 |
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4 | if(f_) |
| 65 | { | ||
| 66 | 4 | int failed = fclose(f_); | |
| 67 | 4 | f_ = nullptr; | |
| 68 |
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4 | if(failed) |
| 69 | { | ||
| 70 | ✗ | ec.assign(errno, generic_category()); | |
| 71 | ✗ | return; | |
| 72 | } | ||
| 73 | } | ||
| 74 | 4 | ec = {}; | |
| 75 | } | ||
| 76 | |||
| 77 | void | ||
| 78 | 21 | file_stdio:: | |
| 79 | open(char const* path, file_mode mode, error_code& ec) | ||
| 80 | { | ||
| 81 |
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21 | if(f_) |
| 82 | { | ||
| 83 | 1 | fclose(f_); | |
| 84 | 1 | f_ = nullptr; | |
| 85 | } | ||
| 86 | 21 | ec = {}; | |
| 87 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 88 | boost::winapi::WCHAR_ const* s; | ||
| 89 | detail::win32_unicode_path unicode_path(path, ec); | ||
| 90 | if (ec) | ||
| 91 | return; | ||
| 92 | #else | ||
| 93 | char const* s; | ||
| 94 | #endif | ||
| 95 |
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21 | switch(mode) |
| 96 | { | ||
| 97 | 2 | default: | |
| 98 | case file_mode::read: | ||
| 99 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 100 | s = L"rb"; | ||
| 101 | #else | ||
| 102 | 2 | s = "rb"; | |
| 103 | #endif | ||
| 104 | 2 | break; | |
| 105 | |||
| 106 | 1 | case file_mode::scan: | |
| 107 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 108 | s = L"rbS"; | ||
| 109 | #else | ||
| 110 | 1 | s = "rb"; | |
| 111 | #endif | ||
| 112 | 1 | break; | |
| 113 | |||
| 114 | 10 | case file_mode::write: | |
| 115 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 116 | s = L"wb+"; | ||
| 117 | #else | ||
| 118 | 10 | s = "wb+"; | |
| 119 | #endif | ||
| 120 | 10 | break; | |
| 121 | |||
| 122 | 2 | case file_mode::write_new: | |
| 123 | { | ||
| 124 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 125 | # if (defined(BOOST_MSVC) && BOOST_MSVC >= 1910) || (defined(_MSVC_STL_VERSION) && _MSVC_STL_VERSION >= 141) | ||
| 126 | s = L"wbx"; | ||
| 127 | # else | ||
| 128 | std::FILE* f0; | ||
| 129 | auto const ev = ::_wfopen_s(&f0, unicode_path.c_str(), L"rb"); | ||
| 130 | if(! ev) | ||
| 131 | { | ||
| 132 | std::fclose(f0); | ||
| 133 | ec = make_error_code(errc::file_exists); | ||
| 134 | return; | ||
| 135 | } | ||
| 136 | else if(ev != | ||
| 137 | errc::no_such_file_or_directory) | ||
| 138 | { | ||
| 139 | ec.assign(ev, generic_category()); | ||
| 140 | return; | ||
| 141 | } | ||
| 142 | s = L"wb"; | ||
| 143 | # endif | ||
| 144 | #else | ||
| 145 | 2 | s = "wbx"; | |
| 146 | #endif | ||
| 147 | 2 | break; | |
| 148 | } | ||
| 149 | |||
| 150 | 2 | case file_mode::write_existing: | |
| 151 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 152 | s = L"rb+"; | ||
| 153 | #else | ||
| 154 | 2 | s = "rb+"; | |
| 155 | #endif | ||
| 156 | 2 | break; | |
| 157 | |||
| 158 | 2 | case file_mode::append: | |
| 159 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 160 | s = L"ab"; | ||
| 161 | #else | ||
| 162 | 2 | s = "ab"; | |
| 163 | #endif | ||
| 164 | 2 | break; | |
| 165 | |||
| 166 | 2 | case file_mode::append_existing: | |
| 167 | { | ||
| 168 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 169 | std::FILE* f0; | ||
| 170 | auto const ev = | ||
| 171 | ::_wfopen_s(&f0, unicode_path.c_str(), L"rb+"); | ||
| 172 | if(ev) | ||
| 173 | { | ||
| 174 | ec.assign(ev, generic_category()); | ||
| 175 | return; | ||
| 176 | } | ||
| 177 | #else | ||
| 178 | auto const f0 = | ||
| 179 | 2 | std::fopen(path, "rb+"); | |
| 180 |
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2 | if(! f0) |
| 181 | { | ||
| 182 | 1 | ec.assign(errno, generic_category()); | |
| 183 | 1 | return; | |
| 184 | } | ||
| 185 | #endif | ||
| 186 | 1 | std::fclose(f0); | |
| 187 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 188 | s = L"ab"; | ||
| 189 | #else | ||
| 190 | 1 | s = "ab"; | |
| 191 | #endif | ||
| 192 | 1 | break; | |
| 193 | } | ||
| 194 | } | ||
| 195 | |||
| 196 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 197 | auto const ev = ::_wfopen_s(&f_, unicode_path.c_str(), s); | ||
| 198 | if(ev) | ||
| 199 | { | ||
| 200 | f_ = nullptr; | ||
| 201 | ec.assign(ev, generic_category()); | ||
| 202 | return; | ||
| 203 | } | ||
| 204 | #else | ||
| 205 | 20 | f_ = std::fopen(path, s); | |
| 206 |
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20 | if(! f_) |
| 207 | { | ||
| 208 | 2 | ec.assign(errno, generic_category()); | |
| 209 | 2 | return; | |
| 210 | } | ||
| 211 | #endif | ||
| 212 | } | ||
| 213 | |||
| 214 | std::uint64_t | ||
| 215 | 2 | file_stdio:: | |
| 216 | size(error_code& ec) const | ||
| 217 | { | ||
| 218 |
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2 | if(! f_) |
| 219 | { | ||
| 220 | 1 | ec = make_error_code(errc::bad_file_descriptor); | |
| 221 | 1 | return 0; | |
| 222 | } | ||
| 223 | 1 | long pos = std::ftell(f_); | |
| 224 |
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1 | if(pos == -1L) |
| 225 | { | ||
| 226 | ✗ | ec.assign(errno, generic_category()); | |
| 227 | ✗ | return 0; | |
| 228 | } | ||
| 229 | 1 | int result = std::fseek(f_, 0, SEEK_END); | |
| 230 |
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1 | if(result != 0) |
| 231 | { | ||
| 232 | ✗ | ec.assign(errno, generic_category()); | |
| 233 | ✗ | return 0; | |
| 234 | } | ||
| 235 | 1 | long size = std::ftell(f_); | |
| 236 |
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1 | if(size == -1L) |
| 237 | { | ||
| 238 | ✗ | ec.assign(errno, generic_category()); | |
| 239 | ✗ | std::fseek(f_, pos, SEEK_SET); | |
| 240 | ✗ | return 0; | |
| 241 | } | ||
| 242 | 1 | result = std::fseek(f_, pos, SEEK_SET); | |
| 243 |
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1 | if(result != 0) |
| 244 | ✗ | ec.assign(errno, generic_category()); | |
| 245 | else | ||
| 246 | 1 | ec = {}; | |
| 247 | 1 | return size; | |
| 248 | } | ||
| 249 | |||
| 250 | std::uint64_t | ||
| 251 | 3 | file_stdio:: | |
| 252 | pos(error_code& ec) const | ||
| 253 | { | ||
| 254 |
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3 | if(! f_) |
| 255 | { | ||
| 256 | 1 | ec = make_error_code(errc::bad_file_descriptor); | |
| 257 | 1 | return 0; | |
| 258 | } | ||
| 259 | 2 | long pos = std::ftell(f_); | |
| 260 |
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2 | if(pos == -1L) |
| 261 | { | ||
| 262 | ✗ | ec.assign(errno, generic_category()); | |
| 263 | ✗ | return 0; | |
| 264 | } | ||
| 265 | 2 | ec = {}; | |
| 266 | 2 | return pos; | |
| 267 | } | ||
| 268 | |||
| 269 | void | ||
| 270 | 2 | file_stdio:: | |
| 271 | seek(std::uint64_t offset, error_code& ec) | ||
| 272 | { | ||
| 273 |
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2 | if(! f_) |
| 274 | { | ||
| 275 | 1 | ec = make_error_code(errc::bad_file_descriptor); | |
| 276 | 1 | return; | |
| 277 | } | ||
| 278 |
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1 | if(offset > static_cast<std::uint64_t>((std::numeric_limits<long>::max)())) |
| 279 | { | ||
| 280 | ✗ | ec = make_error_code(errc::invalid_seek); | |
| 281 | ✗ | return; | |
| 282 | } | ||
| 283 | 1 | int result = std::fseek(f_, | |
| 284 | static_cast<long>(offset), SEEK_SET); | ||
| 285 |
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1 | if(result != 0) |
| 286 | ✗ | ec.assign(errno, generic_category()); | |
| 287 | else | ||
| 288 | 1 | ec = {}; | |
| 289 | } | ||
| 290 | |||
| 291 | std::size_t | ||
| 292 | 3 | file_stdio:: | |
| 293 | read(void* buffer, std::size_t n, error_code& ec) const | ||
| 294 | { | ||
| 295 |
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3 | if(! f_) |
| 296 | { | ||
| 297 | 1 | ec = make_error_code(errc::bad_file_descriptor); | |
| 298 | 1 | return 0; | |
| 299 | } | ||
| 300 | 2 | auto nread = std::fread(buffer, 1, n, f_); | |
| 301 |
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2 | if(std::ferror(f_)) |
| 302 | { | ||
| 303 | ✗ | ec.assign(errno, generic_category()); | |
| 304 | ✗ | return 0; | |
| 305 | } | ||
| 306 | 2 | return nread; | |
| 307 | } | ||
| 308 | |||
| 309 | std::size_t | ||
| 310 | 5 | file_stdio:: | |
| 311 | write(void const* buffer, std::size_t n, error_code& ec) | ||
| 312 | { | ||
| 313 |
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5 | if(! f_) |
| 314 | { | ||
| 315 | 1 | ec = make_error_code(errc::bad_file_descriptor); | |
| 316 | 1 | return 0; | |
| 317 | } | ||
| 318 | 4 | auto nwritten = std::fwrite(buffer, 1, n, f_); | |
| 319 |
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4 | if(std::ferror(f_)) |
| 320 | { | ||
| 321 | ✗ | ec.assign(errno, generic_category()); | |
| 322 | ✗ | return 0; | |
| 323 | } | ||
| 324 | 4 | return nwritten; | |
| 325 | } | ||
| 326 | |||
| 327 | } // http_proto | ||
| 328 | } // boost | ||
| 329 | |||
| 330 | #endif | ||
| 331 |