public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
var elements = Convert.ToString(value).Trim('(', ')').Split(',', StringSplitOptions.RemoveEmptyEntries);
ColoredString result = new ColoredString(elements.Length / 3);
for (int i = 0; i + 2 < elements.Length; i += 3)
{
result[i / 3] = new ColoredGlyphEffect()
{
Foreground = new Color(uint.Parse(elements[i])),
Background = new Color(uint.Parse(elements[i + 1])),
Glyph = (int)uint.Parse(elements[i + 2])
};
}
return(result);
}
/// <summary>
/// Creates a colored string by parsing commands embedded in the string.
/// </summary>
/// <param name="value">The string to parse.</param>
/// <param name="surfaceIndex">Index of where this string will be printed.</param>
/// <param name="surface">The surface the string will be printed to.</param>
/// <param name="initialBehaviors">Any initial defaults.</param>
/// <returns>The finalized string.</returns>
public static ColoredString Parse(string value, int surfaceIndex = -1, ICellSurface surface = null, ParseCommandStacks initialBehaviors = null)
{
ParseCommandStacks commandStacks = initialBehaviors ?? new ParseCommandStacks();
List <ColoredGlyphEffect> glyphs = new List <ColoredGlyphEffect>(value.Length);
for (int i = 0; i < value.Length; i++)
{
ColoredGlyphEffect[] existingGlyphs = glyphs.ToArray();
if (value[i] == '`' && i + 1 < value.Length && value[i + 1] == '[')
{
continue;
}
if (value[i] == '[' && (i == 0 || value[i - 1] != '`'))
{
try
{
if (i + 4 < value.Length && value[i + 1] == 'c' && value[i + 2] == ':' && value.IndexOf(']', i + 2) != -1)
{
int commandExitIndex = value.IndexOf(']', i + 2);
string command = value.Substring(i + 3, commandExitIndex - (i + 3));
string commandParams = "";
if (command.Contains(" "))
{
string[] commandSections = command.Split(new char[] { ' ' }, 2);
command = commandSections[0].ToLower();
commandParams = commandSections[1];
}
// Check for custom command
ParseCommandBase commandObject = CustomProcessor?.Invoke(command, commandParams, existingGlyphs, surface, commandStacks);
// No custom command found, run build in ones
if (commandObject == null)
{
switch (command)
{
case "recolor":
case "r":
commandObject = new ParseCommandRecolor(commandParams);
break;
case "mirror":
case "m":
commandObject = new ParseCommandMirror(commandParams);
break;
case "undo":
case "u":
commandObject = new ParseCommandUndo(commandParams, commandStacks);
break;
case "grad":
case "g":
commandObject = new ParseCommandGradient(commandParams);
break;
case "blink":
case "b":
commandObject = new ParseCommandBlink(commandParams, existingGlyphs, commandStacks, surface);
break;
case "sglyph":
case "sg":
commandObject = new ParseCommandSetGlyph(commandParams);
break;
case "ceffect":
case "ce":
commandObject = new ParseCommandClearEffect(commandParams, commandStacks);
break;
default:
break;
}
}
if (commandObject != null && commandObject.CommandType != CommandTypes.Invalid)
{
commandStacks.AddSafe(commandObject);
i = commandExitIndex;
continue;
}
}
}
catch (Exception e1)
{
#if DEBUG
// Helps track down parsing bugs
System.Diagnostics.Debugger.Break();
#endif
}
}
int fixedSurfaceIndex;
if (surfaceIndex == -1 || surface == null)
{
fixedSurfaceIndex = -1;
}
else
{
fixedSurfaceIndex = i + surfaceIndex < surface.Count ? i + surfaceIndex : -1;
}
ColoredGlyphEffect newGlyph;
if (fixedSurfaceIndex != -1)
{
newGlyph = new ColoredGlyphEffect();
surface[i + surfaceIndex].CopyAppearanceTo(newGlyph);
newGlyph.Glyph = value[i];
}
else
{
newGlyph = new ColoredGlyphEffect()
{
Glyph = value[i]
};
}
// Foreground
if (commandStacks.Foreground.Count != 0)
{
commandStacks.Foreground.Peek().Build(ref newGlyph, existingGlyphs, fixedSurfaceIndex, surface, ref i, value, commandStacks);
}
// Background
if (commandStacks.Background.Count != 0)
{
commandStacks.Background.Peek().Build(ref newGlyph, existingGlyphs, fixedSurfaceIndex, surface, ref i, value, commandStacks);
}
// Glyph
if (commandStacks.Glyph.Count != 0)
{
commandStacks.Glyph.Peek().Build(ref newGlyph, existingGlyphs, fixedSurfaceIndex, surface, ref i, value, commandStacks);
}
// Mirror
if (commandStacks.Mirror.Count != 0)
{
commandStacks.Mirror.Peek().Build(ref newGlyph, existingGlyphs, fixedSurfaceIndex, surface, ref i, value, commandStacks);
}
// Effect
if (commandStacks.Effect.Count != 0)
{
commandStacks.Effect.Peek().Build(ref newGlyph, existingGlyphs, fixedSurfaceIndex, surface, ref i, value, commandStacks);
}
glyphs.Add(newGlyph);
}
return(new ColoredString(glyphs.ToArray())
{
IgnoreEffect = !commandStacks.TurnOnEffects
});
}
