color: function()

in seriously.js [5341:5460]
108 lines of code
33 McCabe index (conditional complexity)

		color: function (value, input, defaultValue, oldValue) {
			var s, a, i, computed, bg;

			a = oldValue || [];

			if (typeof value === 'string') {
				//todo: support percentages, decimals
				s = (/^(rgb|hsl)a?\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(,\s*(\d+(\.\d*)?)\s*)?\)/i).exec(value);
				if (s && s.length) {
					if (s.length < 3) {
						a[0] = a[1] = a[2] = a[3] = 0;
						return a;
					}

					a[3] = 1;
					for (i = 0; i < 3; i++) {
						a[i] = parseFloat(s[i+2]) / 255;
					}
					if (!isNaN(s[6])) {
						a[3] = parseFloat(s[6]);
					}
					if (s[1].toLowerCase() === 'hsl') {
						return hslToRgb(a[0], a[1], a[2], a[3], a);
					}
					return a;
				}

				s = (/^#(([0-9a-fA-F]{3,8}))/).exec(value);
				if (s && s.length) {
					s = s[1];
					if (s.length === 3) {
						a[0] = parseInt(s[0], 16) / 15;
						a[1] = parseInt(s[1], 16) / 15;
						a[2] = parseInt(s[2], 16) / 15;
						a[3] = 1;
					} else if (s.length === 4) {
						a[0] = parseInt(s[0], 16) / 15;
						a[1] = parseInt(s[1], 16) / 15;
						a[2] = parseInt(s[2], 16) / 15;
						a[3] = parseInt(s[3], 16) / 15;
					} else if (s.length === 6) {
						a[0] = parseInt(s.substr(0, 2), 16) / 255;
						a[1] = parseInt(s.substr(2, 2), 16) / 255;
						a[2] = parseInt(s.substr(4, 2), 16) / 255;
						a[3] = 1;
					} else if (s.length === 8) {
						a[0] = parseInt(s.substr(0, 2), 16) / 255;
						a[1] = parseInt(s.substr(2, 2), 16) / 255;
						a[2] = parseInt(s.substr(4, 2), 16) / 255;
						a[3] = parseInt(s.substr(6, 2), 16) / 255;
					} else {
						a[0] = a[1] = a[2] = a[3] = 0;
					}
					return a;
				}

				s = colorNames[value.toLowerCase()];
				if (s) {
					for (i = 0; i < 4; i++) {
						a[i] = s[i];
					}
					return a;
				}

				if (!colorElement) {
					colorElement = document.createElement('a');
				}
				colorElement.style.backgroundColor = '';
				colorElement.style.backgroundColor = value;
				computed = window.getComputedStyle(colorElement);
				bg = computed.getPropertyValue('background-color') ||
					computed.getPropertyValue('backgroundColor') ||
					colorElement.style.backgroundColor;
				if (bg && bg !== value) {
					return Seriously.inputValidators.color(bg, input, oldValue);
				}

				a[0] = a[1] = a[2] = a[3] = 0;
				return a;
			}

			if (isArrayLike(value)) {
				a = value;
				if (a.length < 3) {
					a[0] = a[1] = a[2] = a[3] = 0;
					return a;
				}
				for (i = 0; i < 3; i++) {
					if (isNaN(a[i])) {
						a[0] = a[1] = a[2] = a[3] = 0;
						return a;
					}
				}
				if (a.length < 4) {
					a.push(1);
				}
				return a;
			}

			if (typeof value === 'number') {
				a[0] = a[1] = a[2] = value;
				a[3] = 1;
				return a;
			}

			if (typeof value === 'object') {
				for (i = 0; i < 4; i++) {
					s = colorFields[i];
					if (value[s] === null || isNaN(value[s])) {
						a[i] = i === 3 ? 1 : 0;
					} else {
						a[i] = value[s];
					}
				}
				return a;
			}

			a[0] = a[1] = a[2] = a[3] = 0;
			return a;
		},