private static Atom ReadDirectory(Atom args, Context context)
{
Atom path = args?.atom;
if (path == null || !path.IsString())
{
throw new ArgumentException("Path must be string!");
}
string directory = (string)path.value;
Atom pattern = args?.next?.atom;
Atom mode = args?.next?.next?.atom;
SearchOption option = ArgUtils.GetEnum <SearchOption>(
mode, 3);
string[] dirs = null;
if (pattern == null)
{
dirs = Directory.GetDirectories(directory);
}
else
{
dirs = Directory.GetDirectories(directory, (string)pattern.value, option);
}
string[] files = null;
if (pattern == null)
{
files = Directory.GetFiles(directory);
}
else
{
files = Directory.GetFiles(directory, (string)pattern.value, option);
}
Atom[] elements = new Atom[dirs.Length + files.Length];
for (int i = 0; i < dirs.Length; i++)
{
elements[i] = new Atom(AtomType.String, dirs[i]);
}
for (int i = 0; i < files.Length; i++)
{
elements[i + dirs.Length] = new Atom(AtomType.String, files[i]);
}
return(Atom.List(elements));
}