/// <summary>
/// Reads input from user using hints. Commands history is supported.
/// </summary>
/// <param name="inputRegex"></param>
/// <returns></returns>
public string ReadLine(string inputRegex = ".*")
{
ConsoleKeyInfo input;
_currentDirectory = Directory.GetCurrentDirectory();
var userInput = string.Empty;
var fullInput = string.Empty;
var wasUserInput = false;
var length = string.IsNullOrEmpty(_options.InitialText)
? _currentDirectory.Length + ConsoleUtils.Prompt.Length
: _options.InitialText.Length;
var cursorPosition = new ConsoleCursorPosition(length, Console.CursorTop, Console.WindowWidth);
ClearConsoleLinesAndWriteInitialText(cursorPosition.StartTop, cursorPosition.Top);
Suggestion suggestion = InitialSuggestionAndHelp(cursorPosition.StartTop);
while ((input = Console.ReadKey()).Key != ConsoleKey.Enter)
{
var writeSuggestionToConsole = false;
int positionToDelete;
if (_previousPressedKey == ConsoleKey.Tab && input.Key != ConsoleKey.Tab)
{
_suggestionsForUserInput = null;
suggestion = null;
}
switch (input.Key)
{
case ConsoleKey.Delete:
positionToDelete = cursorPosition.InputLength;
if (positionToDelete >= 0 && positionToDelete < userInput.Length)
{
if (_currentDirectory.Length > cursorPosition.Left - cursorPosition.InputLength)
{
cursorPosition--;
}
userInput = userInput.Any() ? userInput.Remove(positionToDelete, 1) : string.Empty;
}
wasUserInput = !string.IsNullOrWhiteSpace(userInput);
UpdateSuggestionsForUserInput(userInput);
suggestion = GetFirstSuggestion();
break;
case ConsoleKey.Backspace:
positionToDelete = cursorPosition.InputLength - 1;
if (positionToDelete >= 0 && positionToDelete < userInput.Length)
{
userInput = userInput.Any() ? userInput.Remove(positionToDelete, 1) : string.Empty;
cursorPosition--;
}
if (cursorPosition.InputLength < 0)
{
cursorPosition = cursorPosition.SetLength(0);
}
wasUserInput = !string.IsNullOrWhiteSpace(userInput);
UpdateSuggestionsForUserInput(userInput);
suggestion = GetFirstSuggestion();
break;
case ConsoleKey.Tab:
if (_previousPressedKey == ConsoleKey.Tab)
{
suggestion = GetNextSuggestion();
if (suggestion != null)
{
writeSuggestionToConsole = true;
userInput = suggestion.Value + ' ';
}
}
else
{
if (suggestion != null)
{
writeSuggestionToConsole = true;
userInput = suggestion.Value + ' ';
////UpdateSuggestionsForUserInput(userInput);
suggestion = GetFirstSuggestion();
var tmp = fullInput.LastIndexOf(" ");
if (fullInput.EndsWith("="))
{
cursorPosition = cursorPosition.SetLength(fullInput.Length);
}
else if (tmp == -1)
{
cursorPosition = cursorPosition.SetLength(userInput.Length);
}
else
{
cursorPosition = cursorPosition.SetLength(tmp + userInput.Length);
}
}
}
break;
case ConsoleKey.Spacebar:
userInput = userInput.Insert(cursorPosition.InputLength, " ");
wasUserInput = true;
cursorPosition++;
if (userInput.StartsWith(InternalTerminalCommands.Cd))
{
UpdateDirectorySuggestionsForUserInput(userInput);
suggestion = GetFirstSuggestion();
}
else
{
_suggestionsForUserInput = null;
suggestion = null;
}
break;
case ConsoleKey.UpArrow:
if (!wasUserInput)
{
userInput = GetPreviousCommandFromHistory();
cursorPosition = cursorPosition.SetLength(userInput.Length);
}
else
{
suggestion = GetPreviousSuggestion();
}
break;
case ConsoleKey.DownArrow:
if (!wasUserInput)
{
userInput = GetNextCommandFromHistory();
cursorPosition = cursorPosition.SetLength(userInput.Length);
}
else
{
suggestion = GetNextSuggestion();
}
break;
case ConsoleKey.LeftArrow:
if (cursorPosition.InputLength > 0)
{
cursorPosition--;
}
break;
case ConsoleKey.RightArrow:
if (cursorPosition.InputLength < userInput.Length)
{
cursorPosition++;
}
break;
case ConsoleKey.Home:
cursorPosition = cursorPosition.SetLength(0);
break;
case ConsoleKey.End:
cursorPosition = cursorPosition.SetLength(userInput.Length);
break;
case ConsoleKey.F1:
case ConsoleKey.F2:
case ConsoleKey.F3:
case ConsoleKey.F4:
case ConsoleKey.F5:
case ConsoleKey.F6:
case ConsoleKey.F7:
case ConsoleKey.F8:
case ConsoleKey.F9:
case ConsoleKey.F10:
case ConsoleKey.F11:
case ConsoleKey.F12:
break;
default:
if (Regex.IsMatch(input.KeyChar.ToString(), inputRegex))
{
cursorPosition++;
userInput = userInput.Insert(cursorPosition.InputLength - 1,
input.KeyChar.ToString());
}
wasUserInput = true;
if (userInput.StartsWith(InternalTerminalCommands.Cd) || _options.OnlyDirectoriesSuggestions)
{
UpdateDirectorySuggestionsForUserInput(userInput);
}
else
{
UpdateSuggestionsForUserInput(userInput);
}
suggestion = GetFirstSuggestion();
break;
}
ClearConsoleLinesAndWriteInitialText(cursorPosition.StartTop, cursorPosition.Top);
var li = fullInput.TrimEnd().LastIndexOf(" ");
if (li == -1 && !fullInput.StartsWith(InternalTerminalCommands.Cd, StringComparison.OrdinalIgnoreCase) && !_options.OnlyDirectoriesSuggestions)
{
if (input.Key == ConsoleKey.Tab && _previousPressedKey == ConsoleKey.Tab && suggestion != null)
{
fullInput = userInput;
cursorPosition = cursorPosition.SetLength(fullInput.Length);
ConsoleUtils.Write(fullInput, ConsoleColor.Green);
}
else
{
ConsoleUtils.Write(userInput, ConsoleColor.Green);
fullInput = userInput;
}
}
else
{
if (!writeSuggestionToConsole)
{
ConsoleUtils.Write(userInput, ConsoleColor.Green);
fullInput = userInput;
}
else
{
userInput = WriteSugestionAsUserInput(userInput, suggestion, li, ref fullInput, ref cursorPosition);
}
}
if (userInput.Any())
{
if (suggestion != null && suggestion.Value != userInput && writeSuggestionToConsole == false)
{
WriteSuggestion(suggestion);
WriteOnBottomLine(suggestion.Help);
_lastSuggestion = suggestion;
}
else
{
var splitedUserInput = userInput.Split(' ');
var toCheck = splitedUserInput.Last().Split('=').First();
if (_lastSuggestion != null && toCheck.Equals(_lastSuggestion.Value))
{
WriteOnBottomLine(_lastSuggestion.Help);
}
else
{
WriteOnBottomLine(string.Empty);
}
}
}
else
{
WriteOnBottomLine(string.Empty);
}
Console.CursorLeft = cursorPosition.Left;
Console.CursorTop = cursorPosition.Top;
_previousPressedKey = input.Key;
}
Console.WriteLine(string.Empty);
AddCommandToHistory(fullInput);
return(fullInput);
}
private string WriteSugestionAsUserInput(string userInput, Suggestion suggestion, int li, ref string fullInput, ref ConsoleCursorPosition cursorPosition)
{
var suggestionValue = userInput;
suggestionValue = suggestionValue.TrimEnd();
if (li == -1)
{
li = fullInput.Length - 1;
}
bool startsWithCd = fullInput.StartsWith(InternalTerminalCommands.Cd, StringComparison.OrdinalIgnoreCase);
if (!suggestionValue.StartsWith("-") && !startsWithCd && !_options.OnlyDirectoriesSuggestions)
{
suggestionValue = $" {suggestionValue} ";
}
else
{
if (fullInput.Contains(@"\") && startsWithCd)
{
var splitedInputs = fullInput.Split(' ').Last().Split('\\');
foreach (var spllitedInput in splitedInputs)
{
li = li + spllitedInput.Length + 1;
}
}
else if (fullInput.Contains("/") && startsWithCd)
{
var splitedInputs = fullInput.Split(' ').Last().Split('/');
foreach (var spllitedInput in splitedInputs)
{
li = li + spllitedInput.Length + 1;
}
}
else
{
if (suggestion.SuggestionType != HintType.DirectoryOrFile)
{
suggestionValue = $" {suggestionValue}";
}
else if (startsWithCd)
{
li++;
}
else
{
if (fullInput.Contains("/") || fullInput.Contains(@"\"))
{
li++;
}
}
}
}
if (suggestion.SuggestionType == HintType.Value)
{
suggestionValue = $" -{suggestion.Key}={suggestionValue.Trim()}";
}
fullInput = $"{fullInput.Substring(0, li)}{suggestionValue}";
suggestionValue = fullInput;
ConsoleUtils.Write(fullInput, ConsoleColor.Green);
cursorPosition = cursorPosition.SetLength(fullInput.Length);
return(suggestionValue);
}
/// <summary>
/// Reads input from user using hints. Commands history is supported
/// </summary>
/// <param name="inputRegex"></param>
/// <param name="hintColor"></param>
/// <returns></returns>
public string ReadHintedLine(string inputRegex = ".*", ConsoleColor hintColor = ConsoleColor.DarkGray)
{
ConsoleKeyInfo input;
Suggestion suggestion = null;
var userInput = string.Empty;
var fullInput = string.Empty;
var readLine = string.Empty;
var wasUserInput = false;
var target = string.Empty;
var cursorPosition = new ConsoleCursorPosition(ConsoleUtils.Prompt.Length, Console.CursorTop, Console.WindowWidth);
ClearConsoleLines(cursorPosition.StartTop, cursorPosition.Top);
while ((input = Console.ReadKey()).Key != ConsoleKey.Enter)
{
var writeSugestionToConsole = false;
int positionToDelete;
switch (input.Key)
{
case ConsoleKey.Delete:
positionToDelete = cursorPosition.InputLength;
if (positionToDelete >= 0 && positionToDelete < userInput.Length)
{
cursorPosition--;
userInput = userInput.Any() ? userInput.Remove(positionToDelete, 1) : string.Empty;
}
wasUserInput = !string.IsNullOrWhiteSpace(userInput);
UpdateSuggestionsForUserInput(userInput);
suggestion = GetFirstSuggestion();
break;
case ConsoleKey.Backspace:
positionToDelete = cursorPosition.InputLength - 1;
if (positionToDelete >= 0 && positionToDelete < userInput.Length)
{
userInput = userInput.Any() ? userInput.Remove(positionToDelete, 1) : string.Empty;
cursorPosition--;
}
if (cursorPosition.InputLength < 0)
{
cursorPosition = cursorPosition.SetLength(0);
}
wasUserInput = !string.IsNullOrWhiteSpace(userInput);
UpdateSuggestionsForUserInput(userInput);
suggestion = GetFirstSuggestion();
break;
case ConsoleKey.Tab:
if (suggestion != null)
{
writeSugestionToConsole = true;
userInput = suggestion.Value + ' ';
UpdateSuggestionsForUserInput(userInput);
suggestion = GetFirstSuggestion();
var tmp = fullInput.LastIndexOf(" ");
if (tmp == -1)
{
cursorPosition = cursorPosition.SetLength(userInput.Length);
}
else
{
cursorPosition = cursorPosition.SetLength(tmp + userInput.Length);
}
}
break;
case ConsoleKey.Spacebar:
userInput = userInput + " ";
wasUserInput = true;
cursorPosition++;
////if (suggestion != null)
////{
//// userInput = suggestion.Value + ' ';
////}
////else if (Regex.IsMatch(input.KeyChar.ToString(), inputRegex))
////{
//// cursorPosition++;
//// userInput = userInput.Insert(cursorPosition.InputLength - 1, input.KeyChar.ToString());
//// UpdateSuggestionsForUserInput(userInput);
//// suggestion = GetFirstSuggestion();
//// cursorPosition = cursorPosition.SetLength(userInput.Length);
////}
break;
case ConsoleKey.UpArrow:
if (!wasUserInput)
{
userInput = GetPreviousCommandFromHistory();
cursorPosition = cursorPosition.SetLength(userInput.Length);
}
else
{
suggestion = GetPreviousSuggestion();
}
break;
case ConsoleKey.DownArrow:
if (!wasUserInput)
{
userInput = GetNextCommandFromHistory();
cursorPosition = cursorPosition.SetLength(userInput.Length);
}
else
{
suggestion = GetNextSuggestion();
}
break;
case ConsoleKey.LeftArrow:
if (cursorPosition.InputLength > 0)
{
cursorPosition--;
}
break;
case ConsoleKey.RightArrow:
if (cursorPosition.InputLength < userInput.Length)
{
cursorPosition++;
}
break;
case ConsoleKey.Home:
cursorPosition = cursorPosition.SetLength(0);
break;
case ConsoleKey.End:
cursorPosition = cursorPosition.SetLength(userInput.Length);
break;
case ConsoleKey.F1:
case ConsoleKey.F2:
case ConsoleKey.F3:
case ConsoleKey.F4:
case ConsoleKey.F5:
case ConsoleKey.F6:
case ConsoleKey.F7:
case ConsoleKey.F8:
case ConsoleKey.F9:
case ConsoleKey.F10:
case ConsoleKey.F11:
case ConsoleKey.F12:
break;
default:
if (Regex.IsMatch(input.KeyChar.ToString(), inputRegex))
{
cursorPosition++;
userInput = userInput.Insert(cursorPosition.InputLength - 1,
input.KeyChar.ToString());
}
wasUserInput = true;
UpdateSuggestionsForUserInput(userInput);
suggestion = GetFirstSuggestion();
break;
}
readLine = suggestion != null ? suggestion.Value : userInput.TrimEnd(' ');
ClearConsoleLines(cursorPosition.StartTop, cursorPosition.Top);
var li = fullInput.TrimEnd().LastIndexOf(" ");
if (li == -1)
{
ConsoleUtils.Write(userInput, ConsoleColor.Green);
fullInput = userInput;
}
else
{
if (!writeSugestionToConsole)
{
ConsoleUtils.Write(userInput, ConsoleColor.Green);
fullInput = userInput;
}
else
{
userInput = userInput.TrimEnd();
if (!userInput.StartsWith("-"))
{
userInput = $"{userInput} ";
}
fullInput = $"{fullInput.Substring(0, li)} {userInput}";
userInput = fullInput;
ConsoleUtils.Write(fullInput, ConsoleColor.Green);
cursorPosition = cursorPosition.SetLength(fullInput.Length);
}
}
if (userInput.Any())
{
if (suggestion != null && suggestion.Value != userInput && writeSugestionToConsole == false)
{
WriteSuggestion(suggestion, hintColor);
WriteOnBottomLine(suggestion.Help);
}
}
Console.CursorLeft = cursorPosition.Left;
Console.CursorTop = cursorPosition.Top;
}
//ClearConsoleLines();
Console.WriteLine(string.Empty);
AddCommandToHistory(readLine);
return(fullInput);
}
