less parsing

'use strict';

var less=require('less');
var fs = require('fs');

var getTree = function(filePath, callback) {
	var parser = new(less.Parser)();
	fs.readFile(filePath, function (err, data) {
	  	if (err) callback(err);

  		parser.parse(data.toString(), function (err, tree) {
		  callback(err, tree);
		});
	});
};

var getRGBValueFor = function(variableName, tree) {
	var value = tree.variable(variableName).value.eval();
	return value.rgb;
};

module.exports.getTree = getTree;
module.exports.getRGBValueFor = getRGBValueFor;