private void WriteValueWithPadding(
IColoredTextWriter textWriter,
MessageTemplate.ArgumentToken arg,
string formatedValue,
Color?textForegroud,
Color?textBackground,
Color?valueForeground,
Color?valueBackground)
{
if (arg.Alignment > 0)
{
int padLeft = arg.Alignment - formatedValue.Length;
textWriter.Write(textForegroud, textBackground, ' ', padLeft);
}
textWriter.Write(
valueForeground ?? textForegroud,
valueBackground ?? textBackground,
formatedValue);
if (arg.Alignment < 0)
{
int padRight = -arg.Alignment - formatedValue.Length;
textWriter.Write(textForegroud, textBackground, ' ', padRight);
}
}
private void RenderLine()
{
int written = 0;
string line = ToString();
var highlights = _textHighlighter.Highlight(line);
int lastUnchanged = IndexOfLastUnchanged(_prevHighlights, highlights);
if (lastUnchanged >= 0)
{
written = highlights[lastUnchanged].Span.End;
}
_consoleCursor.Move(written - Position);
int initialLeft = _console.CursorLeft - written;
if (initialLeft < 0)
{
initialLeft = _console.BufferWidth + initialLeft % _console.BufferWidth;
}
for (int i = lastUnchanged + 1; i < highlights.Count; i++)
{
var highlight = highlights[i];
var style = highlight.Style;
var span = highlight.Span;
_coloredTextWriter.Write(style?.Foreground, style?.Background, span.Text);
written += span.Length;
}
if (written != line.Length)
{
throw new IndexOutOfRangeException(); // TODO: add error message
}
int clearSpace = WriteBlank(_prevLength - written);
int currentLeft = (initialLeft + written + clearSpace) % _console.BufferWidth;
if (currentLeft == 0 && _console.CursorLeft == _console.BufferWidth - 1)
{
_console.Write(' ');
_console.Write('\b');
}
_consoleCursor.Move(Position - written - clearSpace);
_prevLength = written;
_prevHighlights = highlights;
if (written > _maxPosition)
{
_maxPosition = written;
}
}
public static void Write(this IColoredTextWriter textWriter, Color?foreground, Color?background, char value, int count)
{
if (count <= 0)
{
return;
}
textWriter.SetColors(foreground, background);
textWriter.Write(value, count);
textWriter.ResetColors();
}
public void Write(
Colored <MessageTemplate> messageTemplate,
IReadOnlyList <Colored <object> > args,
IColoredTextWriter textWriter,
IFormatProvider formatProvider = null)
{
if (messageTemplate == null)
{
throw new ArgumentNullException(nameof(messageTemplate));
}
if (args == null)
{
throw new ArgumentNullException(nameof(args));
}
if (textWriter == null)
{
throw new ArgumentNullException(nameof(textWriter));
}
var formatter = GetFormatter(formatProvider);
var textForegroud = messageTemplate.Foreground;
var textBackground = messageTemplate.Background;
foreach (var token in messageTemplate.Value.Tokens)
{
switch (token)
{
case MessageTemplate.TextToken text:
textWriter.Write(textForegroud, textBackground, text.Text);
break;
case MessageTemplate.ArgumentToken arg:
var coloredValue = args[arg.Index];
string formatedValue = _valueFormatter.Format(coloredValue.Value, arg.Format, formatProvider, formatter);
WriteValueWithPadding(
textWriter, arg, formatedValue,
textForegroud, textBackground,
coloredValue.Foreground, coloredValue.Background);
break;
default:
throw new FormatException($"Unknown format token `{token?.GetType().Name}`.");
}
}
}
public static void Write(this IColoredTextWriter textWriter, Color?foreground, Color?background, char value)
{
textWriter.SetColors(foreground, background);
textWriter.Write(value);
textWriter.ResetColors();
}
public void Write(IColoredTextWriter writer)
{
writer.Write(_options.Foreground, _options.Background, _options.Message);
}
public void Write(Color foreground, char value)
{
_lock.ThrowIfLocked();
_coloredTextWriter.Write(foreground, null, value);
}