tui markup

This crate provides a markup language to quickly write colorful and styled terminal text in plain text.

Usage

use ansi_term::{ANSIStrings, Color, Style};
use tui_markup::{compile, compile_with, generator::ANSIStringsGenerator};

// Parse markup into some final result for showing
let result = compile::<ANSIStringsGenerator>("You got a <yellow Coin>").unwrap();
// Show it
println!("{}", ANSIStrings(&result));

// With custom tag
let gen = ANSIStringsGenerator::new(|tag: &str| match tag {
    "keyboard" => Some(Style::default().fg(Color::Blue).on(Color::Black).bold()),
    _ => None,
});
let result = compile_with("Press <keyboard Space> to jump", gen).unwrap();
println!("{}", ANSIStrings(&result));

Result:

Notice the result type and how to show it is vary depends on what Generator you use.

Current available built-in generators:

• ansi: ANSIStringsGenerator for directly print result in any ASNI compliant terminal.
• ratatui: RatatuiTextGenerator for create Text struct of ratatui crate to show the result.
• crossterm: CrosstermCommandsGenerator for create a series of Command of crossterm crate to print the result.

There is also a macro(tui-markup-ansi-macro crate) to compile markup source into ANSI sequence at compile time, check it if you need.

You can add this markup support for other terminal/library/application easily by create you own generator.

Examples

The example is shown in Windows Terminal, using the following command:

cargo run --example ratatui --features ratatui,crossterm -- examples/help.txt

The source markup text of this article can be found in examples/help.txt.

you can change the last argument to your file to render other article, for example examples/indexed.txt for a full xterm256 color chart:

Those two screenshot are using built-in ratatui generator.

Markup syntax

Only one syntax <taglist content> to add style to content.

taglist is a tag list sep by ,.

tag has format of mode:value, available mode are:

• fg: for foreground color.
• bg: for background color.
• mod: for modifiers.

Mode and : is optional except for bg:, so 66ccff = fg:66ccf , and b = mod:b.

Some examples:

• <green text> for a green color text, <66ccff text> for a #66ccff color text.
• <bg:blue text> for a blue background text, <bg:66ccff text> for a #66ccff background text.
• <b text> for a bold text, <i text> for a italic/slant text.
• <bg:blue one<green two>>, is a blue background one followed by a blue background and green foreground two.
• <bg:blue,green,b,i text> is a blue background, green foreground, bold, italic text.

And you can define your own tag, like example code above.

The formal syntax spec can be found in docs/syntax.ebnf.

Color and modifier supports vary by generator you want to use, see their document for details.

TODO

• Generator for termion
• Generator for ncurses

LICENSE

BSD-3-Clause-Clear, See LICENSE.