Flatten Object

flatten-object.js

//converts this:

//{ counters:
//   { 'statsdbad_lines_seen': 0,
//     'statsdpackets_received': 98,
//     bucket: 26 },
//  timers: {},
//  gauges: { gaugor: 303 },
//  timer_data: {},
//  counter_rates:
//   { 'statsdbad_lines_seen': 0,
//     'statsdpackets_received': 9.8,
//     bucket: 2.6 },
//  sets: [ [ '5' ] ],
//  pctThreshold: [ 90 ]
//}

//into this:

//counters.statsdbad_lines_seen=0
//counters.statsdpackets_received=98
//counters.bucket=26
//gauges.gaugor=303
//counter_rates.statsdbad_lines_seen=0
//counter_rates.statsdpackets_received=9.8
//counter_rates.bucket=2.6
//sets.0.0=5
//pctThreshold.0=90
  
var flatten = function(obj, line, lines) {
    if(!lines) lines = [];
    if(!line) line = '';
    if(!_.isArray(obj) && !_.isObject(obj))
        return lines.push(line + '=' + obj); 
    for(var k in obj)
        flatten(obj[k],line+(line.length?'.':'')+k,lines);
    return lines;
}

print(flatten(obj).join('\n'));

//TODO: dots and equals in keys need to be escaped...