static void PaintLines(TextReader reader, Color defaultColor, IEnumerable <Marker> markers)
{
markers = markers.ToArray();
var colors = new Color[1024];
for (var line = reader.ReadLine(); line != null; line = reader.ReadLine())
{
if (colors.Length < line.Length)
{
colors = new Color[line.Length];
}
{
// ReSharper disable once AccessToModifiedClosure
var markups = markers.SelectMany(m => m(line));
var count = 0;
foreach (var markup in markups)
{
count++;
for (var i = markup.Run.Index; i < markup.Run.End; i++)
{
colors[i] = new Color(markup.Color.Foreground ?? colors[i].Foreground,
markup.Color.Background ?? colors[i].Background);
}
}
if (count == 0)
{
Console.WriteLine(line);
continue;
}
}
{
var anchor = 0;
var cc = default(Color);
for (var i = 0; i < line.Length; i++)
{
var color = colors[i];
if (color != cc)
{
cc.ApplyToConsole();
Console.Write(line.Substring(anchor, i - anchor));
anchor = i;
cc = color;
}
}
if (anchor < line.Length)
{
cc.ApplyToConsole();
Console.Write(line.Substring(anchor, line.Length - anchor));
}
defaultColor.ApplyToConsole();
Console.WriteLine();
}
}
}
static void Wain(string[] args)
{
bool PopSwitch(string name1, string name2 = null, string name3 = null)
{
var i = Array.FindIndex(args, arg => arg == name1 ||
arg == name2 ||
arg == name3);
var found = i >= 0;
if (found)
{
args = args.Splice(i, 1);
}
return(found);
}
var debug = PopSwitch("--debug");
if (debug)
{
Debugger.Launch();
}
var verbose = PopSwitch("--verbose", "-v");
if (PopSwitch("-?", "-h", "--help"))
{
ShowHelp(Console.Out);
return;
}
var tail = Enumerable.ToArray(
from arg in args
select !arg.StartsWith("@")
? new[] { arg }.AsEnumerable()
: arg.Length == 1
? Enumerable.Empty <string>()
: ParseResponseFile(arg.Substring(1)) into argz
from arg in argz
select arg);
if (verbose && tail.Any())
{
Console.Error.WriteLine(FormattableString.Invariant($"Command-line arguments ({tail.Length}):"));
foreach (var arg in tail)
{
Console.Error.WriteLine("- " + arg);
}
}
var defaultColor = new Color(Console.ForegroundColor, Console.BackgroundColor);
var markers =
from arg in tail
let tokens = arg.TrimStart()
.Split(StringSeparatorStock.Equal, 2, StringSplitOptions.RemoveEmptyEntries)
where tokens.Length > 1
select new
{
Color = tokens[0],
Regex = new Regex(tokens[1]),
}
into arg
let all = arg.Color.EndsWith("*")
let color = Color.Parse(all ? arg.Color.Slice(0, -1) : arg.Color)
select CreateMarker(arg.Regex, all, color);
try
{
PaintLines(Console.In, defaultColor, markers.Prepend(line => new[] { new Markup(0, line.Length, defaultColor) }));
}
finally
{
defaultColor.ApplyToConsole();
}
}