/// <summary>Converts a <see cref="FileOpConstant"/> value to <see cref="FileMode"/>.</summary>
/// <param name="value">The value.</param>
/// <returns>The result.</returns>
public static FileMode ToFileMode(this FileOpConstant value)
{
// Note: This is not done in a switch because the order of tests matters.
if ((FileOpConstant._O_CREAT | FileOpConstant._O_EXCL) == (value & (FileOpConstant._O_CREAT | FileOpConstant._O_EXCL)))
{
return(FileMode.CreateNew);
}
else if ((FileOpConstant._O_CREAT | FileOpConstant._O_TRUNC) == (value & (FileOpConstant._O_CREAT | FileOpConstant._O_TRUNC)))
{
return(FileMode.OpenOrCreate);
}
else if (0 != (value & FileOpConstant._O_APPEND))
{
return(FileMode.Append);
}
else if (0 != (value & FileOpConstant._O_CREAT))
{
return(FileMode.Create);
}
else if (0 != (value & FileOpConstant._O_RDWR))
{
return(FileMode.Open);
}
else if (0 != (value & FileOpConstant._O_TRUNC))
{
return(FileMode.Truncate);
}
else
{
return(FileMode.OpenOrCreate); // This seemed the safest way to handled unrecognized types
}
}
/// <summary>Converts a <see cref="FileOpConstant"/> value to <see cref="FileOptions"/>.</summary>
/// <param name="value">The value.</param>
/// <returns>The result.</returns>
public static FileOptions ToFileOptions(this FileOpConstant value)
{
FileOptions ret = 0;
if ((value & FileOpConstant._O_RANDOM) != 0)
{
ret |= FileOptions.RandomAccess;
}
if ((value & FileOpConstant._O_TEMPORARY) != 0)
{
ret |= FileOptions.DeleteOnClose;
}
if ((value & FileOpConstant._O_SEQUENTIAL) != 0)
{
ret |= FileOptions.SequentialScan;
}
return(ret);
}
