module.exports = pathsort
module.exports.standalone = standalone

function pathsort(paths, sep) {
  sep = sep || '/'

  return paths.map(function(el) {
    return el.split(sep)
  }).sort(sorter).map(function(el) {
    return el.join(sep)
  })
}

function sorter(a, b) {
  var l = Math.max(a.length, b.length)
  for (var i = 0; i < l; i += 1) {
    if (!(i in a)) return -1
    if (!(i in b)) return +1
    if (a[i].toUpperCase() > b[i].toUpperCase()) return +1
    if (a[i].toUpperCase() < b[i].toUpperCase()) return -1
    if (a.length < b.length) return -1
    if (a.length > b.length) return +1
  }
}

function standalone(sep) {
  sep = sep || '/'
  return function pathsort(a, b) {
    return sorter(a.split(sep), b.split(sep))
  }
}