Umama-at-Bluchip/Quick-UI

1'use strict'2 3exports.parse = parse4exports.stringify = stringify5 6var comma = ','7var space = ' '8var empty = ''9 10// Parse comma-separated tokens to an array.11function parse(value) {12  var values = []13  var input = String(value || empty)14  var index = input.indexOf(comma)15  var lastIndex = 016  var end = false17  var val18 19  while (!end) {20    if (index === -1) {21      index = input.length22      end = true23    }24 25    val = input.slice(lastIndex, index).trim()26 27    if (val || !end) {28      values.push(val)29    }30 31    lastIndex = index + 132    index = input.indexOf(comma, lastIndex)33  }34 35  return values36}37 38// Compile an array to comma-separated tokens.39// `options.padLeft` (default: `true`) pads a space left of each token, and40// `options.padRight` (default: `false`) pads a space to the right of each token.41function stringify(values, options) {42  var settings = options || {}43  var left = settings.padLeft === false ? empty : space44  var right = settings.padRight ? space : empty45 46  // Ensure the last empty entry is seen.47  if (values[values.length - 1] === empty) {48    values = values.concat(empty)49  }50 51  return values.join(right + comma + left).trim()52}53