| 15 | #endif |
| 16 | |
| 17 | bool cmFileTime::Load(std::string const& fileName) |
| 18 | { |
| 19 | #if !defined(_WIN32) || defined(__CYGWIN__) |
| 20 | // POSIX version. Use the stat function. |
| 21 | struct stat fst; |
| 22 | if (::stat(fileName.c_str(), &fst) != 0) { |
| 23 | return false; |
| 24 | } |
| 25 | # if CMake_STAT_HAS_ST_MTIM |
| 26 | // Nanosecond resolution |
| 27 | this->Time = fst.st_mtim.tv_sec * UtPerS + fst.st_mtim.tv_nsec; |
| 28 | # elif CMake_STAT_HAS_ST_MTIMESPEC |
| 29 | // Nanosecond resolution |
| 30 | this->Time = fst.st_mtimespec.tv_sec * UtPerS + fst.st_mtimespec.tv_nsec; |
| 31 | # else |
| 32 | // Second resolution |
| 33 | this->Time = fst.st_mtime * UtPerS; |
| 34 | # endif |
| 35 | #else |
| 36 | // Windows version. Get the modification time from extended file attributes. |
| 37 | WIN32_FILE_ATTRIBUTE_DATA fdata; |
| 38 | if (!GetFileAttributesExW(cmsys::Encoding::ToWide(fileName).c_str(), |
| 39 | GetFileExInfoStandard, &fdata)) { |
| 40 | return false; |
| 41 | } |
| 42 | |
| 43 | // Copy the file time to the output location. |
| 44 | using uint64 = unsigned long long; |
| 45 | |
| 46 | this->Time = static_cast<TimeType>( |
| 47 | (uint64(fdata.ftLastWriteTime.dwHighDateTime) << 32) + |
| 48 | fdata.ftLastWriteTime.dwLowDateTime); |
| 49 | #endif |
| 50 | return true; |
| 51 | } |