gistfile1.js

function fn_akamai() {};
fn_akamai.prototype.tmexpr = function() {
	return "sid=`mist-session` && mist-source $sid -m calc.in | mist-decode -l";
};

function fn_count(s) { this.s = s; }
fn_count.prototype.tmexpr = function() {
	return this.s.tmexpr() + " | " + " count-lines ";
};

function fn_filter(s, f, v) { this.s = s; this.f = f; this.v = v; }
fn_filter.prototype.tmexpr = function() {
	return this.s.tmexpr() + " | grep '" + this.f + "=" + this.v + "' ";
};

	var evaluate = function(formula, sheetname, cellcoord) {
		var AKAMAI = function() {
			console.log("AKAMAI");
			return new fn_akamai();
		};
		var COUNT = function(source) {
			console.log("COUNT");
			return new fn_count(source);
		};
		var FILTER = function(source, field, value) {
			console.log("FILTER");
			return new fn_filter(source, field, value);
		};
		return eval(formula).tmexpr() + " | update-sheet " + URL_BASE + "/_/" + sheetname + " " + cellcoord;
	};