A use case for fromStringz

[Andrej Mitrovic]

Actually, this still suffers from the problem when the returned char*
doesn't have a null terminator. It really sucks when C code does that,
and I've just experienced that. There is a solution though:

Since we can detect the length of the D array passed into
`fromStringz`, we can do the job of to!string ourselves and check for
a null terminator. If one isn't found, we return a string of length 0.
Here's an updated version which doesn't suffer from the missing null
terminator problem:

string fromStringz(T)(T value)
{
    static if (isArray!T)
    {
        if (value is null || value.length == 0)
        {
            return "";
        }

        auto nullPos = value.indexOf("\0");

        if (nullPos == -1)
            return "";

        return to!string(value[0..nullPos]);
    }
    else
    {
        return to!string(value);
    }
}