long long file::size() const { #ifdef _WIN32 // Use GetFileSize instead of GetFileSizeEx for the case when _WIN32_WINNT // is less than 0x0500 as is the case with some default MinGW builds. // Both functions support large file sizes. DWORD size_upper = 0; HANDLE handle = reinterpret_cast<HANDLE>(_get_osfhandle(fd_)); DWORD size_lower = FMT_SYSTEM(GetFileSize(handle, &size_upper)); if (size_lower == INVALID_FILE_SIZE) { DWORD error = GetLastError(); if (error != NO_ERROR) FMT_THROW(windows_error(GetLastError(), "cannot get file size")); } unsigned long long long_size = size_upper; return (long_size << sizeof(DWORD) * CHAR_BIT) | size_lower; #else typedef struct stat Stat; Stat file_stat = Stat(); if (FMT_POSIX_CALL(fstat(fd_, &file_stat)) == -1) FMT_THROW(system_error(errno, "cannot get file attributes")); static_assert(sizeof(long long) >= sizeof(file_stat.st_size), "return type of file::size is not large enough"); return file_stat.st_size; #endif }
void buffered_file::close() { if (!file_) return; int result = FMT_SYSTEM(fclose(file_)); file_ = FMT_NULL; if (result != 0) FMT_THROW(system_error(errno, "cannot close file")); }
void fmt::BufferedFile::close() { if (!file_) return; int result = FMT_SYSTEM(fclose(file_)); file_ = 0; if (result != 0) throw SystemError(errno, "cannot close file"); }
buffered_file::buffered_file(cstring_view filename, cstring_view mode) { FMT_RETRY_VAL(file_, FMT_SYSTEM(fopen(filename.c_str(), mode.c_str())), FMT_NULL); if (!file_) FMT_THROW(system_error(errno, "cannot open file {}", filename.c_str())); }
fmt::BufferedFile::BufferedFile( fmt::CStringRef filename, fmt::CStringRef mode) { FMT_RETRY_VAL(file_, FMT_SYSTEM(fopen(filename.c_str(), mode.c_str())), 0); if (!file_) throw SystemError(errno, "cannot open file {}", filename); }