ansi256css.js

// Generated by CoffeeScript 1.7.1
(function() {
  var cssToAnsi, fromHex, __doc__;

  __doc__ = "A module that returns an ANSI color code given either a CSS color name, a hex string,\nor an ANSI color code as a number\n";

  cssToAnsi = require('./css-to-ansi');

  fromHex = function(hex) {
    "Maps a 6 digit hex string describing a CSS color onto the ANSI 256 color palette";
    var blue, green, red, x, _ref;
    _ref = (function() {
      var _i, _len, _ref, _results;
      _ref = [hex.slice(0, 2), hex.slice(2, 4), hex.slice(4, 6)];
      _results = [];
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        x = _ref[_i];
        _results.push(Math.round(parseInt(x, 16) / 255 * 5));
      }
      return _results;
    })(), red = _ref[0], green = _ref[1], blue = _ref[2];
    return 16 + red * 36 + green * 6 + blue;
  };

  module.exports = function(code) {
    "Returns an ANSI color number given an ANSI color number, CSS color name, or CSS hex color";
    switch (typeof code) {
      case 'number':
        return code;
      case 'string':
        if (/^#?(?:[0-9a-f]{3}){1,2}$/i.test(code)) {
          if (code[0] === '#') {
            code = code.slice(1);
          }
          if (code.length < 6) {
            return fromHex(code[0] + code[0] + code[1] + code[1] + code[2] + code[2]);
          } else {
            return fromHex(code);
          }
        } else {
          return cssToAnsi[code.toLowerCase()];
        }
        break;
      default:
        return void 0;
    }
  };

}).call(this);