import groovy.json.*

if (args.size() == 0) {
  println("missing argument")
  System.exit(1)
}

def f = new File(args[0])
if (!f.exists()) {
  println("file doesn't exist")
  System.exit(1)
}

def lines = f.readLines()
def keys = lines[0].split(',')
def rows = lines[1..-1].collect { line ->
  def i = 0, vals = line.split(',')
  keys.inject([:]) { map, key -> map << ["$key": vals[i++]] }
}

println(JsonOutput.toJson(rows))