Function SFileGetFileSize

extern/StormLib/src/SFileReadFile.cpp:769–814

// SFileGetFileSize

DWORD WINAPI SFileGetFileSize(HANDLE hFile, LPDWORD pdwFileSizeHigh)
{
    ULONGLONG FileSize;
    TMPQFile * hf = (TMPQFile *)hFile;

    // Validate the file handle before we go on
    if(IsValidFileHandle(hFile))
    {
        // Make sure that the variable is initialized
        FileSize = 0;

        // If the file is patched file, we have to get the size of the last version
        if(hf->hfPatch != NULL)
        {
            // Walk through the entire patch chain, take the last version
            while(hf != NULL)
            {
                // Get the size of the currently pointed version
                FileSize = hf->pFileEntry->dwFileSize;

                // Move to the next patch file in the hierarchy
                hf = hf->hfPatch;
            }
        }
        else
        {
            // Is it a local file ?
            if(hf->pStream != NULL)
            {
                FileStream_GetSize(hf->pStream, &FileSize);
            }
            else
            {
                FileSize = hf->dwDataSize;
            }
        }

        // If opened from archive, return file size
        if(pdwFileSizeHigh != NULL)
            *pdwFileSizeHigh = (DWORD)(FileSize >> 32);
        return (DWORD)FileSize;
    }

    SetLastError(ERROR_INVALID_HANDLE);
    return SFILE_INVALID_SIZE;
}

DWORD WINAPI SFileSetFilePointer(HANDLE hFile, LONG lFilePos, LONG * plFilePosHigh, DWORD dwMoveMethod)
{