Mercurial > hg > orthanc-stone
annotate Resources/Orthanc/Core/SystemToolbox.cpp @ 39:9ee7e2f5f1a3
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 21 Dec 2016 14:19:38 +0100 |
| parents | a4a1e4033403 |
| children | 7207a407bcd8 |
| rev | line source |
|---|---|
| 15 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * | |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 10 * | |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 22 * | |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
| 33 #include "PrecompiledHeaders.h" | |
| 34 #include "SystemToolbox.h" | |
| 35 | |
| 36 | |
| 37 #if BOOST_HAS_DATE_TIME == 1 | |
| 23 | 38 # include <boost/date_time/posix_time/posix_time.hpp> |
| 15 | 39 #endif |
| 40 | |
| 41 | |
| 42 #if defined(_WIN32) | |
| 23 | 43 # include <windows.h> |
| 44 # include <process.h> // For "_spawnvp()" and "_getpid()" | |
| 15 | 45 #else |
| 23 | 46 # include <unistd.h> // For "execvp()" |
| 47 # include <sys/wait.h> // For "waitpid()" | |
| 15 | 48 #endif |
| 49 | |
| 23 | 50 |
| 15 | 51 #if defined(__APPLE__) && defined(__MACH__) |
| 23 | 52 # include <mach-o/dyld.h> /* _NSGetExecutablePath */ |
| 53 # include <limits.h> /* PATH_MAX */ | |
| 15 | 54 #endif |
| 55 | |
| 23 | 56 |
| 15 | 57 #if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) |
| 23 | 58 # include <limits.h> /* PATH_MAX */ |
| 59 # include <signal.h> | |
| 60 # include <unistd.h> | |
| 15 | 61 #endif |
| 62 | |
| 63 | |
|
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64 // Inclusions for UUID |
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65 // http://stackoverflow.com/a/1626302 |
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66 |
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67 extern "C" |
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68 { |
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69 #ifdef WIN32 |
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70 # include <rpc.h> |
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71 #else |
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72 # include <uuid/uuid.h> |
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73 #endif |
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74 } |
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75 |
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76 |
| 15 | 77 #include "Logging.h" |
| 78 #include "OrthancException.h" | |
| 79 #include "Toolbox.h" | |
| 80 | |
| 81 #include <boost/filesystem.hpp> | |
| 82 #include <boost/filesystem/fstream.hpp> | |
| 83 | |
| 84 | |
| 85 namespace Orthanc | |
| 86 { | |
| 87 static bool finish_; | |
| 88 static ServerBarrierEvent barrierEvent_; | |
| 89 | |
| 90 #if defined(_WIN32) | |
| 91 static BOOL WINAPI ConsoleControlHandler(DWORD dwCtrlType) | |
| 92 { | |
| 93 // http://msdn.microsoft.com/en-us/library/ms683242(v=vs.85).aspx | |
| 94 finish_ = true; | |
| 95 return true; | |
| 96 } | |
| 97 #else | |
| 98 static void SignalHandler(int signal) | |
| 99 { | |
| 100 if (signal == SIGHUP) | |
| 101 { | |
| 102 barrierEvent_ = ServerBarrierEvent_Reload; | |
| 103 } | |
| 104 | |
| 105 finish_ = true; | |
| 106 } | |
| 107 #endif | |
| 108 | |
| 109 | |
| 110 static ServerBarrierEvent ServerBarrierInternal(const bool* stopFlag) | |
| 111 { | |
| 112 #if defined(_WIN32) | |
| 113 SetConsoleCtrlHandler(ConsoleControlHandler, true); | |
| 114 #else | |
| 115 signal(SIGINT, SignalHandler); | |
| 116 signal(SIGQUIT, SignalHandler); | |
| 117 signal(SIGTERM, SignalHandler); | |
| 118 signal(SIGHUP, SignalHandler); | |
| 119 #endif | |
| 120 | |
| 121 // Active loop that awakens every 100ms | |
| 122 finish_ = false; | |
| 123 barrierEvent_ = ServerBarrierEvent_Stop; | |
| 124 while (!(*stopFlag || finish_)) | |
| 125 { | |
| 39 | 126 SystemToolbox::USleep(100 * 1000); |
| 15 | 127 } |
| 128 | |
| 129 #if defined(_WIN32) | |
| 130 SetConsoleCtrlHandler(ConsoleControlHandler, false); | |
| 131 #else | |
| 132 signal(SIGINT, NULL); | |
| 133 signal(SIGQUIT, NULL); | |
| 134 signal(SIGTERM, NULL); | |
| 135 signal(SIGHUP, NULL); | |
| 136 #endif | |
| 137 | |
| 138 return barrierEvent_; | |
| 139 } | |
| 140 | |
| 141 | |
| 142 ServerBarrierEvent SystemToolbox::ServerBarrier(const bool& stopFlag) | |
| 143 { | |
| 144 return ServerBarrierInternal(&stopFlag); | |
| 145 } | |
| 146 | |
| 147 | |
| 148 ServerBarrierEvent SystemToolbox::ServerBarrier() | |
| 149 { | |
| 150 const bool stopFlag = false; | |
| 151 return ServerBarrierInternal(&stopFlag); | |
| 152 } | |
| 153 | |
| 154 | |
| 39 | 155 void SystemToolbox::USleep(uint64_t microSeconds) |
| 156 { | |
| 157 #if defined(_WIN32) | |
| 158 ::Sleep(static_cast<DWORD>(microSeconds / static_cast<uint64_t>(1000))); | |
| 159 #elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) || defined(__native_client__) | |
| 160 usleep(microSeconds); | |
| 161 #else | |
| 162 #error Support your platform here | |
| 163 #endif | |
| 164 } | |
| 165 | |
| 166 | |
| 15 | 167 static std::streamsize GetStreamSize(std::istream& f) |
| 168 { | |
| 169 // http://www.cplusplus.com/reference/iostream/istream/tellg/ | |
| 170 f.seekg(0, std::ios::end); | |
| 171 std::streamsize size = f.tellg(); | |
| 172 f.seekg(0, std::ios::beg); | |
| 173 | |
| 174 return size; | |
| 175 } | |
| 176 | |
| 177 | |
| 178 void SystemToolbox::ReadFile(std::string& content, | |
| 179 const std::string& path) | |
| 180 { | |
| 181 if (!IsRegularFile(path)) | |
| 182 { | |
| 183 LOG(ERROR) << std::string("The path does not point to a regular file: ") << path; | |
| 184 throw OrthancException(ErrorCode_RegularFileExpected); | |
| 185 } | |
| 186 | |
| 187 boost::filesystem::ifstream f; | |
| 188 f.open(path, std::ifstream::in | std::ifstream::binary); | |
| 189 if (!f.good()) | |
| 190 { | |
| 191 throw OrthancException(ErrorCode_InexistentFile); | |
| 192 } | |
| 193 | |
| 194 std::streamsize size = GetStreamSize(f); | |
| 195 content.resize(size); | |
| 196 if (size != 0) | |
| 197 { | |
| 198 f.read(reinterpret_cast<char*>(&content[0]), size); | |
| 199 } | |
| 200 | |
| 201 f.close(); | |
| 202 } | |
| 203 | |
| 204 | |
| 205 bool SystemToolbox::ReadHeader(std::string& header, | |
| 206 const std::string& path, | |
| 207 size_t headerSize) | |
| 208 { | |
| 209 if (!IsRegularFile(path)) | |
| 210 { | |
| 211 LOG(ERROR) << std::string("The path does not point to a regular file: ") << path; | |
| 212 throw OrthancException(ErrorCode_RegularFileExpected); | |
| 213 } | |
| 214 | |
| 215 boost::filesystem::ifstream f; | |
| 216 f.open(path, std::ifstream::in | std::ifstream::binary); | |
| 217 if (!f.good()) | |
| 218 { | |
| 219 throw OrthancException(ErrorCode_InexistentFile); | |
| 220 } | |
| 221 | |
| 222 bool full = true; | |
| 223 | |
| 224 { | |
| 225 std::streamsize size = GetStreamSize(f); | |
| 226 if (size <= 0) | |
| 227 { | |
| 228 headerSize = 0; | |
| 229 full = false; | |
| 230 } | |
| 231 else if (static_cast<size_t>(size) < headerSize) | |
| 232 { | |
| 233 headerSize = size; // Truncate to the size of the file | |
| 234 full = false; | |
| 235 } | |
| 236 } | |
| 237 | |
| 238 header.resize(headerSize); | |
| 239 if (headerSize != 0) | |
| 240 { | |
| 241 f.read(reinterpret_cast<char*>(&header[0]), headerSize); | |
| 242 } | |
| 243 | |
| 244 f.close(); | |
| 245 | |
| 246 return full; | |
| 247 } | |
| 248 | |
| 249 | |
| 250 void SystemToolbox::WriteFile(const void* content, | |
| 251 size_t size, | |
| 252 const std::string& path) | |
| 253 { | |
| 254 boost::filesystem::ofstream f; | |
| 255 f.open(path, std::ofstream::out | std::ofstream::binary); | |
| 256 if (!f.good()) | |
| 257 { | |
| 258 throw OrthancException(ErrorCode_CannotWriteFile); | |
| 259 } | |
| 260 | |
| 261 if (size != 0) | |
| 262 { | |
| 263 f.write(reinterpret_cast<const char*>(content), size); | |
| 264 | |
| 265 if (!f.good()) | |
| 266 { | |
| 267 f.close(); | |
| 268 throw OrthancException(ErrorCode_FileStorageCannotWrite); | |
| 269 } | |
| 270 } | |
| 271 | |
| 272 f.close(); | |
| 273 } | |
| 274 | |
| 275 | |
| 276 void SystemToolbox::WriteFile(const std::string& content, | |
| 277 const std::string& path) | |
| 278 { | |
| 279 WriteFile(content.size() > 0 ? content.c_str() : NULL, | |
| 280 content.size(), path); | |
| 281 } | |
| 282 | |
| 283 | |
| 284 void SystemToolbox::RemoveFile(const std::string& path) | |
| 285 { | |
| 286 if (boost::filesystem::exists(path)) | |
| 287 { | |
| 288 if (IsRegularFile(path)) | |
| 289 { | |
| 290 boost::filesystem::remove(path); | |
| 291 } | |
| 292 else | |
| 293 { | |
| 294 throw OrthancException(ErrorCode_RegularFileExpected); | |
| 295 } | |
| 296 } | |
| 297 } | |
| 298 | |
| 299 | |
| 300 uint64_t SystemToolbox::GetFileSize(const std::string& path) | |
| 301 { | |
| 302 try | |
| 303 { | |
| 304 return static_cast<uint64_t>(boost::filesystem::file_size(path)); | |
| 305 } | |
| 306 catch (boost::filesystem::filesystem_error&) | |
| 307 { | |
| 308 throw OrthancException(ErrorCode_InexistentFile); | |
| 309 } | |
| 310 } | |
| 311 | |
| 312 | |
| 313 void SystemToolbox::MakeDirectory(const std::string& path) | |
| 314 { | |
| 315 if (boost::filesystem::exists(path)) | |
| 316 { | |
| 317 if (!boost::filesystem::is_directory(path)) | |
| 318 { | |
| 319 throw OrthancException(ErrorCode_DirectoryOverFile); | |
| 320 } | |
| 321 } | |
| 322 else | |
| 323 { | |
| 324 if (!boost::filesystem::create_directories(path)) | |
| 325 { | |
| 326 throw OrthancException(ErrorCode_MakeDirectory); | |
| 327 } | |
| 328 } | |
| 329 } | |
| 330 | |
| 331 | |
| 332 bool SystemToolbox::IsExistingFile(const std::string& path) | |
| 333 { | |
| 334 return boost::filesystem::exists(path); | |
| 335 } | |
| 336 | |
| 337 | |
| 338 #if defined(_WIN32) | |
| 339 static std::string GetPathToExecutableInternal() | |
| 340 { | |
| 341 // Yes, this is ugly, but there is no simple way to get the | |
| 342 // required buffer size, so we use a big constant | |
| 343 std::vector<char> buffer(32768); | |
| 344 /*int bytes =*/ GetModuleFileNameA(NULL, &buffer[0], static_cast<DWORD>(buffer.size() - 1)); | |
| 345 return std::string(&buffer[0]); | |
| 346 } | |
| 347 | |
| 348 #elif defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) | |
| 349 static std::string GetPathToExecutableInternal() | |
| 350 { | |
| 351 std::vector<char> buffer(PATH_MAX + 1); | |
| 352 ssize_t bytes = readlink("/proc/self/exe", &buffer[0], buffer.size() - 1); | |
| 353 if (bytes == 0) | |
| 354 { | |
| 355 throw OrthancException(ErrorCode_PathToExecutable); | |
| 356 } | |
| 357 | |
| 358 return std::string(&buffer[0]); | |
| 359 } | |
| 360 | |
| 361 #elif defined(__APPLE__) && defined(__MACH__) | |
| 362 static std::string GetPathToExecutableInternal() | |
| 363 { | |
| 364 char pathbuf[PATH_MAX + 1]; | |
| 365 unsigned int bufsize = static_cast<int>(sizeof(pathbuf)); | |
| 366 | |
| 367 _NSGetExecutablePath( pathbuf, &bufsize); | |
| 368 | |
| 369 return std::string(pathbuf); | |
| 370 } | |
| 371 | |
| 372 #else | |
| 373 #error Support your platform here | |
| 374 #endif | |
| 375 | |
| 376 | |
| 377 std::string SystemToolbox::GetPathToExecutable() | |
| 378 { | |
| 379 boost::filesystem::path p(GetPathToExecutableInternal()); | |
| 380 return boost::filesystem::absolute(p).string(); | |
| 381 } | |
| 382 | |
| 383 | |
| 384 std::string SystemToolbox::GetDirectoryOfExecutable() | |
| 385 { | |
| 386 boost::filesystem::path p(GetPathToExecutableInternal()); | |
| 387 return boost::filesystem::absolute(p.parent_path()).string(); | |
| 388 } | |
| 389 | |
| 390 | |
| 391 void SystemToolbox::ExecuteSystemCommand(const std::string& command, | |
| 392 const std::vector<std::string>& arguments) | |
| 393 { | |
| 394 // Convert the arguments as a C array | |
| 395 std::vector<char*> args(arguments.size() + 2); | |
| 396 | |
| 397 args.front() = const_cast<char*>(command.c_str()); | |
| 398 | |
| 399 for (size_t i = 0; i < arguments.size(); i++) | |
| 400 { | |
| 401 args[i + 1] = const_cast<char*>(arguments[i].c_str()); | |
| 402 } | |
| 403 | |
| 404 args.back() = NULL; | |
| 405 | |
| 406 int status; | |
| 407 | |
| 408 #if defined(_WIN32) | |
| 409 // http://msdn.microsoft.com/en-us/library/275khfab.aspx | |
| 410 status = static_cast<int>(_spawnvp(_P_OVERLAY, command.c_str(), &args[0])); | |
| 411 | |
| 412 #else | |
| 413 int pid = fork(); | |
| 414 | |
| 415 if (pid == -1) | |
| 416 { | |
| 417 // Error in fork() | |
| 418 #if ORTHANC_ENABLE_LOGGING == 1 | |
| 419 LOG(ERROR) << "Cannot fork a child process"; | |
| 420 #endif | |
| 421 | |
| 422 throw OrthancException(ErrorCode_SystemCommand); | |
| 423 } | |
| 424 else if (pid == 0) | |
| 425 { | |
| 426 // Execute the system command in the child process | |
| 427 execvp(command.c_str(), &args[0]); | |
| 428 | |
| 429 // We should never get here | |
| 430 _exit(1); | |
| 431 } | |
| 432 else | |
| 433 { | |
| 434 // Wait for the system command to exit | |
| 435 waitpid(pid, &status, 0); | |
| 436 } | |
| 437 #endif | |
| 438 | |
| 439 if (status != 0) | |
| 440 { | |
| 441 #if ORTHANC_ENABLE_LOGGING == 1 | |
| 442 LOG(ERROR) << "System command failed with status code " << status; | |
| 443 #endif | |
| 444 | |
| 445 throw OrthancException(ErrorCode_SystemCommand); | |
| 446 } | |
| 447 } | |
| 448 | |
| 449 | |
| 450 int SystemToolbox::GetProcessId() | |
| 451 { | |
| 452 #if defined(_WIN32) | |
| 453 return static_cast<int>(_getpid()); | |
| 454 #else | |
| 455 return static_cast<int>(getpid()); | |
| 456 #endif | |
| 457 } | |
| 458 | |
| 459 | |
| 460 bool SystemToolbox::IsRegularFile(const std::string& path) | |
| 461 { | |
| 462 namespace fs = boost::filesystem; | |
| 463 | |
| 464 try | |
| 465 { | |
| 466 if (fs::exists(path)) | |
| 467 { | |
| 468 fs::file_status status = fs::status(path); | |
| 469 return (status.type() == boost::filesystem::regular_file || | |
| 470 status.type() == boost::filesystem::reparse_file); // Fix BitBucket issue #11 | |
| 471 } | |
| 472 } | |
| 473 catch (fs::filesystem_error&) | |
| 474 { | |
| 475 } | |
| 476 | |
| 477 return false; | |
| 478 } | |
| 479 | |
| 480 | |
| 481 FILE* SystemToolbox::OpenFile(const std::string& path, | |
| 482 FileMode mode) | |
| 483 { | |
| 484 #if defined(_WIN32) | |
| 485 // TODO Deal with special characters by converting to the current locale | |
| 486 #endif | |
| 487 | |
| 488 const char* m; | |
| 489 switch (mode) | |
| 490 { | |
| 491 case FileMode_ReadBinary: | |
| 492 m = "rb"; | |
| 493 break; | |
| 494 | |
| 495 case FileMode_WriteBinary: | |
| 496 m = "wb"; | |
| 497 break; | |
| 498 | |
| 499 default: | |
| 500 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 501 } | |
| 502 | |
| 503 return fopen(path.c_str(), m); | |
| 504 } | |
| 505 | |
| 506 | |
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507 std::string SystemToolbox::GenerateUuid() |
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508 { |
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509 #ifdef WIN32 |
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510 UUID uuid; |
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511 UuidCreate ( &uuid ); |
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512 |
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513 unsigned char * str; |
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514 UuidToStringA ( &uuid, &str ); |
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515 |
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516 std::string s( ( char* ) str ); |
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517 |
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518 RpcStringFreeA ( &str ); |
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519 #else |
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520 uuid_t uuid; |
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521 uuid_generate_random ( uuid ); |
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522 char s[37]; |
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523 uuid_unparse ( uuid, s ); |
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524 #endif |
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525 return s; |
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526 } |
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527 |
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528 |
| 15 | 529 #if BOOST_HAS_DATE_TIME == 1 |
| 530 std::string SystemToolbox::GetNowIsoString() | |
| 531 { | |
| 532 boost::posix_time::ptime now = boost::posix_time::second_clock::local_time(); | |
| 533 return boost::posix_time::to_iso_string(now); | |
| 534 } | |
| 535 | |
| 536 void SystemToolbox::GetNowDicom(std::string& date, | |
| 537 std::string& time) | |
| 538 { | |
| 539 boost::posix_time::ptime now = boost::posix_time::second_clock::local_time(); | |
| 540 tm tm = boost::posix_time::to_tm(now); | |
| 541 | |
| 542 char s[32]; | |
| 543 sprintf(s, "%04d%02d%02d", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday); | |
| 544 date.assign(s); | |
| 545 | |
| 546 // TODO milliseconds | |
| 547 sprintf(s, "%02d%02d%02d.%06d", tm.tm_hour, tm.tm_min, tm.tm_sec, 0); | |
| 548 time.assign(s); | |
| 549 } | |
| 550 #endif | |
| 551 } |