#!/bin/sh

# SortableDate.sh
# Wed Apr 15 23:36:48 PDT 2009
# Chieh Cheng
# http://www.CynosureX.com/

# GNU General Public License (GPL) Version 2, June 1991

  scriptName=`basename "$0"`

  usage ()
  {
    echo "  Usage:   ${scriptName} [ -f ] [ -u ]"
  }

  if [ $# -lt 3 ]
  then
    flag=""
    formatFlag=""

    for arg
    do
      case "${arg}" in
        "-u") flag="${flag}-u";;
        "-f") formatFlag="-f";;
        *)  flag="bad";;
      esac
    done

    if [ "${flag}" = "" ] || [ "${flag}" = "-u" ]
    then
      current=`date ${flag}`
      year=`echo "${current}" | Token.sh 6`
      monthStr=`echo "${current}" | Token.sh 2`
      month=`MonthToNumeric.sh -p "${monthStr}"`
      dayStr=`echo "${current}" | Token.sh 3`
      day=`NumberToString.sh ${dayStr} 2`
      time=`echo "${current}" | Token.sh 4`

      if [ "${formatFlag}" = "-f" ]
      then
        echo "${year}${month}${day}_${time}"
      else
        echo "${year}/${month}/${day} ${time}"
      fi
    else
      usage
    fi
  else
    usage
  fi