Generates a duration expression from an ISO 8601 duration pattern

openehr_duration_generator.groovy

def p = "PYMDTHMS"

Random random = new Random()
def gen = ""
def is_time = false
def util_date = new Date()
p.each { c ->

  switch (c)
  {
    case 'P':
      gen += c
    break
    case 'T':
      gen += c
      is_time = true
    break
    case 'Y':
      gen += (1900 + util_date.getYear()) + 'Y'
    break
    case 'M':
      if (is_time)
        gen += random.nextInt(60) + 'M'
      else
        gen += (util_date.getMonth()+1) + 'M'
    break
    case 'D':
      gen += util_date.getDate() + 'D'
    break
    case ['H', 'S']:
      gen += random.nextInt(60) + c
    break
  }
}

println gen