// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license. /** * A module to print ANSI terminal colors. Inspired by chalk, kleur, and colors * on npm. * * ``` * import { bgBlue, red, bold } from "https://deno.land/std/fmt/colors.ts"; * console.log(bgBlue(red(bold("Hello world!")))); * ``` * * This module supports `NO_COLOR` environmental variable disabling any coloring * if `NO_COLOR` is set. */ const { noColor } = Deno; interface Code { open: string; close: string; regexp: RegExp; } let enabled = !noColor; export function setColorEnabled(value: boolean): void { if (noColor) { return; } enabled = value; } export function getColorEnabled(): boolean { return enabled; } function code(open: number, close: number): Code { return { open: `\x1b[${open}m`, close: `\x1b[${close}m`, regexp: new RegExp(`\\x1b\\[${close}m`, "g"), }; } function run(str: string, code: Code): string { return enabled ? `${code.open}${str.replace(code.regexp, code.open)}${code.close}` : str; } export function reset(str: string): string { return run(str, code(0, 0)); } export function bold(str: string): string { return run(str, code(1, 22)); } export function dim(str: string): string { return run(str, code(2, 22)); } export function italic(str: string): string { return run(str, code(3, 23)); } export function underline(str: string): string { return run(str, code(4, 24)); } export function inverse(str: string): string { return run(str, code(7, 27)); } export function hidden(str: string): string { return run(str, code(8, 28)); } export function strikethrough(str: string): string { return run(str, code(9, 29)); } export function black(str: string): string { return run(str, code(30, 39)); } export function red(str: string): string { return run(str, code(31, 39)); } export function green(str: string): string { return run(str, code(32, 39)); } export function yellow(str: string): string { return run(str, code(33, 39)); } export function blue(str: string): string { return run(str, code(34, 39)); } export function magenta(str: string): string { return run(str, code(35, 39)); } export function cyan(str: string): string { return run(str, code(36, 39)); } export function white(str: string): string { return run(str, code(37, 39)); } export function gray(str: string): string { return run(str, code(90, 39)); } export function bgBlack(str: string): string { return run(str, code(40, 49)); } export function bgRed(str: string): string { return run(str, code(41, 49)); } export function bgGreen(str: string): string { return run(str, code(42, 49)); } export function bgYellow(str: string): string { return run(str, code(43, 49)); } export function bgBlue(str: string): string { return run(str, code(44, 49)); } export function bgMagenta(str: string): string { return run(str, code(45, 49)); } export function bgCyan(str: string): string { return run(str, code(46, 49)); } export function bgWhite(str: string): string { return run(str, code(47, 49)); }