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Use GetFileSize instead of GetFileSizeEx on Windows
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parent
c6d3a73201
commit
5aecd4947f
18
posix.cc
18
posix.cc
@ -140,13 +140,19 @@ void fmt::File::close() {
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fmt::LongLong fmt::File::size() const {
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#ifdef _WIN32
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LARGE_INTEGER filesize = {};
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// Use GetFileSize instead of GetFileSizeEx for the case when _WIN32_WINNT
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// is less than 0x0500 as is the case with some default MinGW builds.
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// Both functions support large file sizes.
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DWORD size_upper = 0;
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HANDLE handle = reinterpret_cast<HANDLE>(_get_osfhandle(fd_));
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if (!FMT_SYSTEM(GetFileSizeEx(handle, &filesize)))
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throw WindowsError(GetLastError(), "cannot get file size");
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FMT_STATIC_ASSERT(sizeof(fmt::LongLong) >= sizeof(filesize.QuadPart),
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"return type of File::size is not large enough");
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return filesize.QuadPart;
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DWORD size_lower = FMT_SYSTEM(GetFileSize(handle, &size_upper));
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if (size_lower == INVALID_FILE_SIZE) {
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DWORD error = GetLastError();
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if (error != NO_ERROR)
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throw WindowsError(GetLastError(), "cannot get file size");
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}
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fmt::ULongLong size = size_upper;
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return (size << sizeof(DWORD) * CHAR_BIT) | size_lower;
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#else
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typedef struct stat Stat;
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Stat file_stat = Stat();
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@ -105,15 +105,17 @@ errno_t test::sopen_s(
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static LONGLONG max_file_size() { return std::numeric_limits<LONGLONG>::max(); }
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BOOL test::GetFileSizeEx(HANDLE hFile, PLARGE_INTEGER lpFileSize) {
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DWORD test::GetFileSize(HANDLE hFile, LPDWORD lpFileSizeHigh) {
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if (fstat_sim == ERROR) {
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SetLastError(ERROR_ACCESS_DENIED);
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return FALSE;
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}
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BOOL result = ::GetFileSizeEx(hFile, lpFileSize);
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if (fstat_sim == MAX_SIZE)
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lpFileSize->QuadPart = max_file_size();
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return result;
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if (fstat_sim == MAX_SIZE) {
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DWORD max = std::numeric_limits<DWORD>::max();
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*lpFileSizeHig = max >> 1;
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return max;
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}
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return ::GetFileSize(hFile, lpFileSizeHigh);
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}
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#endif
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@ -51,7 +51,7 @@ typedef unsigned size_t;
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typedef int ssize_t;
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errno_t sopen_s(
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int* pfh, const char *filename, int oflag, int shflag, int pmode);
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BOOL GetFileSizeEx(HANDLE hFile, PLARGE_INTEGER lpFileSize);
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DWORD GetFileSize(HANDLE hFile, LPDWORD lpFileSizeHigh);
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#endif
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int close(int fildes);
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