//static StringBuilder StaticLevelBuilder = new StringBuilder(); // I chose this way in order not to have to allocate and release too much memory.... Slows things down, needlessly!
static public List <string> Tree(string Expression, CheckCase CC = CheckCase.Auto, Type t = Type.FilesOnly, bool hidden = false)
{
var ret = new List <string>();
var Ex = Dirry.AD(Expression);
var ExA = Ex.Split('/');
//var start = 0;
var root = false;
var drive = false;
/* Maybe this wasn't the right approach... It's always a puzzle :)
* string level(int l) {
* StaticLevelBuilder.Clear();
* for (int i = 0; i <= l && i < ExA.Length) {
* if (i > 0) StaticLevelBuilder.Append('/');
* StaticLevelBuilder.Append(ExA[i]);
* }
* return StaticLevelBuilder.ToString();
* } */
void ArrayPrefix(string[] d, string Prefix)
{
for (int i = 0; i < d.Length; i++)
{
d[i] = $"{Prefix}{d[i]}";
}
}
try {
string[] VL = null;
if (ExA.Length == 0)
{
return(ret); // No need to do anything!
}
if (ExA[0].Length == 2 && ExA[0][1] == ':')
{
ret.Add(ExA[0]); drive = true; /*start = 1;*/ VL = FileList.GetTree($"{ExA[0]}/", true, hidden);
}
else if (ExA[0].Length == 0)
{
root = true; /*start = 1;*/ VL = FileList.GetTree("/", true, hidden);
}
else //if ((!root) && (!drive)) {
{
Debug.WriteLine($"No root or drive, so let's get 'em ... Reading tree {Directory.GetCurrentDirectory()}");
VL = FileList.GetTree(Directory.GetCurrentDirectory(), true, hidden);
Debug.WriteLine($"{VL.Length} entries found");
}
foreach (string entry in VL)
{
//Debug.WriteLine($"Matching: {entry} / {Expression}");
if (Regex.IsMatch(entry, $"^{Expression}$"))
#if DEBUG
{
Debug.WriteLine($" MATCH FOR: {entry} / {Expression}");
#endif
{ ret.Add(entry); }
#if DEBUG
}
else
{
Debug.WriteLine($"NO MATCH FOR: {entry} / {Expression}");
}
#endif
}
} catch (Exception e) {
Console.Beep(); Console.Beep(); Console.Beep();
Debug.WriteLine($"RegExTree(\"{Expression}\",CheckCase.{CC},Type.{t},{hidden}): Exception thrown {e.Message}");
}
return(ret);
}