Autocomplétion console fail avec les caractéres spéciaux dans Windows.
Bonjour, j'ai un soucis avec avec ma class qui me sert auto complété le texte de mon application console. Le soucis c'est que je ne peux pas taper au clavier les caractères spéciaux comme le "-" ou "," ou "()". Du coup mon code est inutiles.
Une idée ? Merci d'avance.
Code:
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// Usage: :D
// var cac = new ConsoleAutoComplete("hallo", "halloween", "world", "worldwide", "www");
// var line = cac.Start();
internal class ConsoleAutoComplete
{
private readonly StringBuilder _result = new StringBuilder();
public ConsoleAutoComplete(List<string> values)
{
Values = values;
}
public List<string> Values { get; }
private IEnumerable<string> Suggestions { get; set; }
private int CurrentSuggestionIndex { get; set; }
public string Start()
{
var input = default(ConsoleKeyInfo);
do
{
input = Console.ReadKey(intercept: true);
if (CollectCharacter(input))
{
var suggestions = FindSuggestions();
Suggest(suggestions);
SuggestAutoComplete();
}
else
{
SelectSuggestion(input);
Suggest(Suggestions);
}
} while (input.Key != ConsoleKey.Enter);
return _result.ToString();
}
private static void ClearCurrentLine()
{
var row = Console.CursorTop;
var col = Console.CursorLeft;
Console.SetCursorPosition(col, row);
Console.Write(new string(' ', Console.WindowWidth));
Console.SetCursorPosition(col, row);
}
private void CompleteValue()
{
var currentInput = _result.ToString();
var match = Values.FirstOrDefault(item => item != currentInput && item.StartsWith(currentInput, true, CultureInfo.InvariantCulture));
if (string.IsNullOrEmpty(match))
{
return;
}
ClearCurrentLine();
_result.Clear();
Console.Write(match);
_result.Append(match);
}
private IEnumerable<string> FindSuggestions()
{
CurrentSuggestionIndex = -1;
var lastWord = _result.ToString().Split(new[] { ' ' }).Last();
if (string.IsNullOrEmpty(lastWord)) { return Enumerable.Empty<string>(); }
return (Suggestions = Values.Where(x => x != lastWord && x.StartsWith(lastWord, true, CultureInfo.InvariantCulture)));
}
private void Suggest(IEnumerable<string> suggestions)
{
ClearSuggestions();
using (new CursorPositionKeeper())
{
var topOffset = 1;
var left = _result.ToString().LastIndexOf(' ') + 1;
foreach (var suggestion in suggestions)
{
Console.ForegroundColor = ConsoleColor.DarkGray;
if (Console.CursorTop == CurrentSuggestionIndex) { Console.ForegroundColor = ConsoleColor.Green; }
Console.SetCursorPosition(left, Console.CursorTop + topOffset);
Console.Write(suggestion);
}
}
Console.ResetColor();
}
private void SuggestAutoComplete()
{
using (new CursorPositionKeeper())
{
var last = _result.ToString().Split(' ').LastOrDefault();
if (string.IsNullOrEmpty(last)) { return; }
var suggestion = Suggestions.ElementAtOrDefault(CurrentSuggestionIndex + 1);
if (string.IsNullOrEmpty(suggestion)) { return; }
Console.ForegroundColor = ConsoleColor.Yellow;
var autoComplete = Regex.Replace(suggestion, $"^{last}", string.Empty, RegexOptions.IgnoreCase);
Console.Write(autoComplete);
}
Console.ResetColor();
}
private void ClearSuggestions()
{
using (new CursorPositionKeeper())
{
for (var top = Console.CursorTop + 1; top < Console.WindowHeight; top++)
{
Debug.WriteLine($"top: {top}");
Console.SetCursorPosition(0, top);
Console.Write(new string(' ', Console.WindowWidth));
}
}
}
private void SelectSuggestion(ConsoleKeyInfo input)
{
if (input.Key == ConsoleKey.DownArrow)
{
CurrentSuggestionIndex++;
}
if (input.Key == ConsoleKey.UpArrow)
{
CurrentSuggestionIndex--;
}
}
private bool CollectCharacter(ConsoleKeyInfo input)
{
if (input.Key == ConsoleKey.Backspace && _result.Length > 0)
{
_result.Remove(_result.Length - 1, 1);
Console.SetCursorPosition(Console.CursorLeft - 1, Console.CursorTop);
using (new CursorPositionKeeper())
{
Console.Write(new string(' ', Console.WindowWidth));
}
return true;
}
if (char.IsLetterOrDigit(input.KeyChar) || input.KeyChar == ' ')
{
_result.Append(input.KeyChar);
Console.Write(input.KeyChar);
return true;
}
return false;
}
private class CursorPositionKeeper : IDisposable
{
private int Top { get; } = Console.CursorTop;
private int Left { get; } = Console.CursorLeft;
public void Dispose()
{
Console.SetCursorPosition(Left, Top);
}
}
} |
