git.r.bdr.sh - rbdr/tomato-sauce/blob - lib/renderers/256_colors.js

   1 'use strict';
   2
   3 /**
   4  * Returns a 256 color, see https://en.wikipedia.org/wiki/ANSI_escape_code#Colors
   5  * for more info.
   6  *
   7  * @function 256ColorsRenderer
   8  * @implements IRenderer
   9  */
  10 module.exports = function (red, blue, green) {
  11
  12   const redValue = Math.round(red * 5 / 255);
  13   const blueValue = Math.round(blue * 5 / 255);
  14   const greenValue = Math.round(green * 5 / 255);
  15
  16   const colorNumber = 16 + 36 * redValue + 6 * greenValue + blueValue;
  17
  18   return `\x1B[48;5;${colorNumber}m`;
  19 };