Handle.js

var parse = require('css-parse');

var Handle = function (css) {
	this.styleSheet = parse(css);
	this.handles = [];
	this.finalHandle = new Function();
};


Handle.prototype.use = function (properties, func) {
	if (arguments.length == 1) {
		this.handles.push({
			properties: '*',
			func: arguments[0]
		});
		return;
	}

	this.handles.push(
		{
			properties: properties,
			func: func
		}
	);
};

Handle.prototype.do = function () {
	var json = {};
	var self = this;
	this.styleSheet.stylesheet.rules.forEach(function (rule) {
			if (rule.type !== 'rule') return;

			rule.selectors.forEach(function (selector) {
				selector = selector.replace(/\.|#/g, '');
				var styles = (json[selector] = json[selector] || {});

				rule.declarations.forEach(function (declaration) {
					if (declaration.type !== 'declaration') return;
					var keys = [{
						key: declaration.property,
						value: declaration.value
					}];

					for (var i = 0; i < self.handles.length; i++) {
						var properties = self.handles[i].properties;
						if (properties == "*") {
							self.handles[i].func(keys);
						}
						if (_indexOf(declaration.property, properties)) {
							keys = self.handles[i].func(keys);
						}
					}
					self.finalHandle(styles, keys);

				});
			});
		}
	);
	return JSON.stringify(json, null, 4);
};

Handle.prototype.final = function (func) {
	this.finalHandle = func;
};

function _indexOf(value, arr) {
	var flag = false;
	for (var i = 0; i < arr.length; i++) {
		if (value === arr[i]) {
			return true
		}
	}
	return flag;
}

module.exports = Handle;