65 lines
1.1 KiB
Plaintext
65 lines
1.1 KiB
Plaintext
unit UCRTHelper;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, crt;
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type
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TPromptMode = (pmNormal, pmPassword);
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function Prompt(ACaption: String; AMode: TPromptMode = pmNormal): String; overload;
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function Prompt(ACaption, ADefault: String; AMode: TPromptMode = pmNormal): String; overload;
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implementation
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function Prompt(ACaption: String; AMode: TPromptMode): String;
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begin
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Prompt(ACaption, '', AMode);
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end;
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function Prompt(ACaption, ADefault: String; AMode: TPromptMode): String;
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var
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c: Char;
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begin
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Write(ACaption);
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if ADefault <> '' then
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Write(' [', ADefault, ']');
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Write(': ');
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Result := '';
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repeat
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c := ReadKey;
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if (c = #8) and (Length(Result) > 0) then
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begin
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Write(#8, ' ', #8);
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end
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else if c > #31 then
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begin
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Result := Result + c;
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case AMode of
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pmNormal: Write(c);
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pmPassword: Write('*');
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end;
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end;
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until (c = #13) or (c = ^C);
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if (c = #13) and (Result = '') then
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begin
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Result := ADefault;
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Write(ADefault);
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end;
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if c = #13 then
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Writeln;
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if c = ^C then
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Result := ''; //Pretend that nothing happened.
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end;
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end.
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