rrggbbaa/lib/parse.js

Color code utility and converter library for NodeJS.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.parse = undefined;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

var _regexp = require("./regexp");

var _rrggbbaa = require("./rrggbbaa");

var _rrggbbaa2 = _interopRequireDefault(_rrggbbaa);

var _converters = require("./converters");

var _webcolors = require("./webcolors");

var _webcolors2 = _interopRequireDefault(_webcolors);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var parse = function parse(input) {
  // if not value, default to black
  if (!input) {
    return {
      r: 0,
      g: 0,
      b: 0,
      a: 100
    };
  }

  // try to identify
  if ((typeof input === "undefined" ? "undefined" : _typeof(input)) === "object" && input instanceof _rrggbbaa2.default) {
    return {
      r: input.red(),
      g: input.green(),
      b: input.blue(),
      a: input.alpha()
    };
  } else if (typeof input === "string") {
    // test for rgb
    var rgbMatch = input.match(_regexp.RegExpForRGB);
    if (rgbMatch) {
      return {
        r: parseInt(rgbMatch[1], 10),
        g: parseInt(rgbMatch[2], 10),
        b: parseInt(rgbMatch[3], 10),
        a: rgbMatch[4] ? parseFloat(rgbMatch[4]) * 100 : 100
      };
    }

    // test for hex(a) - both #FFF and #FFFFFF syntaxes
    var hexMatch = input.match(_regexp.RegExpForHEX);
    if (hexMatch && (hexMatch[1] || hexMatch[5])) {
      if (hexMatch[1]) {
        // short syntax
        return {
          r: (0, _converters.hexToInteger)(hexMatch[1]),
          g: (0, _converters.hexToInteger)(hexMatch[2]),
          b: (0, _converters.hexToInteger)(hexMatch[3]),
          a: hexMatch[4] ? (0, _converters.scale255To100)((0, _converters.hexToInteger)(hexMatch[4])) : 100
        };
      } else {
        // long syntax
        return {
          r: (0, _converters.hexToInteger)(hexMatch[5]),
          g: (0, _converters.hexToInteger)(hexMatch[6]),
          b: (0, _converters.hexToInteger)(hexMatch[7]),
          a: hexMatch[8] ? (0, _converters.scale255To100)((0, _converters.hexToInteger)(hexMatch[8])) : 100
        };
      }
    }

    // test web colors
    for (var i = 0; i < _webcolors2.default.length; i += 1) {
      if (_webcolors2.default[i].name.toLowerCase() === input.toLowerCase()) {
        return parse("#" + _webcolors2.default[i].hex);
      }
    }
  }

  // nothing matched, throw an error
  throw new Error("input could not be parsed as a color");
};

exports.default = parse;
exports.parse = parse;