Crayon

An easy peasy tiny library for coloring console output in inline strings using ANSI escape codes.

Examples

Console.WriteLine(Output.Green($"green {Output.Red($"{Output.Bold("bold")} red")} green"));
Console.WriteLine($"The difference {"between bold".Bold()}, {"bright green".BrightGreen()} and {"dim".Dim()}".Green());
Console.WriteLine("normal");
Console.WriteLine(Output.BrightBlue($"Bright {Output.Green("and normal green")}"));
Console.WriteLine(Output.Green($"The difference {Output.Bold("between bold")} and {Output.BrightGreen("bright green")}"));
Console.WriteLine(Output.Green().Bold().Underline().Reversed().Text("hoi!"));
Console.WriteLine(Output.Bold().Green().Text($"starting green {Output.Red("then red")} must be green again"));

Two modes

The static methods accepting string input Output.Red("input") return formatted string output. This also works with nested interpolated strings Output.Red($"input {Output.Bold("bold")}"). Or as extension methods (on string) "input".Red().Bold().

Or building up a formatter using Output.Bold().Red().Text("input") where the string is only returned after closing with the Text method. This can also be mixed with interpolated strings.

Rainbows 🌈

Thanks to DevinR528 we now have rainbows!

var rainbow = new Rainbow(0.5);
for(var i = 0; i < 15; i++)
{
    Console.WriteLine(rainbow.Next().Bold().Text("rainbow"));
}

How compatible is it?

It works fine on everything except for older Windows versions.

Credits

My journey for using ANSI codes in C# first brought me here: https://www.jerriepelser.com/blog/using-ansi-color-codes-in-net-console-apps/

The ANSI coloring details was inspired by this blog post: http://www.lihaoyi.com/post/BuildyourownCommandLinewithANSIescapecodes.html

The code for enabling ANSI colors feature on Windows was borrowed from this issue: microsoft/WSL#1873

No greater compliment than someone taking your work for inspiration. In return I peaked into his code for the RGB support!

enusbaum / crayon