public virtual int Write(string value)
{
var writtenLines = (CursorLeft + EastAsianWidth.GetWidth(value) + 1) / Console.BufferWidth;
Console.Write(value);
return(writtenLines);
}
public void WhenIaAsian()
{
var eastAsianWidth = new EastAsianWidth(new TestProvider());
string value = new string(new [] { (char)0, (char)3 });
Assert.Equal(3, eastAsianWidth.GetWidth(value, true));
}
public void WhenIsNotAsian()
{
var eastAsianWidth = new EastAsianWidth(new TestProvider());
string value = new string(new[] { (char)0, (char)3 });
Assert.Equal(2, eastAsianWidth.GetWidth(value, CultureInfo.GetCultureInfo("az-Cyrl-AZ")));
}
public void WhenIaAsian()
{
#if netcoreapp31
CultureInfo.CurrentUICulture = CultureInfo.GetCultureInfo("ja-JP");
#endif
var eastAsianWidth = new EastAsianWidth(new TestProvider());
string value = new string(new[] { (char)0, (char)3 });
Assert.Equal(3, eastAsianWidth.GetWidth(value));
}
protected override void InputTemplate(ScreenBuffer screenBuffer)
{
screenBuffer.WritePrompt(_message);
if (_defaultValue != null)
{
screenBuffer.Write($"({_defaultValue}) ");
}
var(left, top) = screenBuffer.GetCursorPosition();
var input = _inputBuffer.ToString();
screenBuffer.Write(input);
var width = EastAsianWidth.GetWidth(input.Take(_startIndex)) + left;
screenBuffer.SetCursorPosition(width % screenBuffer.BufferWidth, top + (width / screenBuffer.BufferWidth));
}
public virtual string ReadLine()
{
int startIndex = 0;
var inputBuffer = new StringBuilder();
while (true)
{
var keyInfo = ReadKey();
if (keyInfo.Key == ConsoleKey.Enter)
{
break;
}
if (keyInfo.Key == ConsoleKey.LeftArrow)
{
if (startIndex > 0)
{
startIndex -= 1;
var width = EastAsianWidth.GetWidth(inputBuffer[startIndex]);
if (Console.CursorLeft - width < 0)
{
Console.CursorTop -= 1;
Console.CursorLeft = Console.BufferWidth - width;
}
else
{
Console.CursorLeft -= width;
}
}
else
{
Beep();
}
}
else if (keyInfo.Key == ConsoleKey.RightArrow)
{
if (startIndex < inputBuffer.Length)
{
var width = EastAsianWidth.GetWidth(inputBuffer[startIndex]);
if (Console.CursorLeft + width >= Console.BufferWidth)
{
Console.CursorTop += 1;
Console.CursorLeft = 0;
}
else
{
Console.CursorLeft += width;
}
startIndex += 1;
}
else
{
Beep();
}
}
else if (keyInfo.Key == ConsoleKey.Backspace)
{
if (startIndex > 0)
{
startIndex -= 1;
var width = EastAsianWidth.GetWidth(inputBuffer[startIndex]);
if (Console.CursorLeft - width < 0)
{
Console.CursorTop -= 1;
Console.CursorLeft = Console.BufferWidth - 1;
}
else
{
Console.CursorLeft -= width;
}
inputBuffer.Remove(startIndex, 1);
var(left, top) = GetCursorPosition();
for (int i = startIndex; i < inputBuffer.Length; i++)
{
Console.Write(inputBuffer[i]);
}
Console.Write(width == 1 ? " " : " ");
SetCursorPosition(left, top);
}
else
{
Beep();
}
}
else if (keyInfo.Key == ConsoleKey.Delete)
{
if (startIndex < inputBuffer.Length)
{
var width = EastAsianWidth.GetWidth(inputBuffer[startIndex]);
inputBuffer.Remove(startIndex, 1);
var(left, top) = GetCursorPosition();
for (int i = startIndex; i < inputBuffer.Length; i++)
{
Console.Write(inputBuffer[i]);
}
Console.Write(width == 1 ? " " : " ");
SetCursorPosition(left, top);
}
else
{
Beep();
}
}
else if (!char.IsControl(keyInfo.KeyChar))
{
inputBuffer.Insert(startIndex, keyInfo.KeyChar);
var(left, top) = GetCursorPosition();
for (int i = startIndex; i < inputBuffer.Length; i++)
{
Console.Write(inputBuffer[i]);
}
left += EastAsianWidth.GetWidth(keyInfo.KeyChar);
if (left >= Console.BufferWidth)
{
left = 0;
top += 1;
if (top >= Console.BufferHeight)
{
Console.BufferHeight += 1;
}
}
SetCursorPosition(left, top);
startIndex += 1;
}
}
return(inputBuffer.ToString());
}
