#!/bin/sh
#
# today - returns the date, depending on $LANG, e.g. 24oct2012
#
# $Id$

Usage()
{
  cat 1>&2 <<ZZ

Usage:

   $0 [-m|-n]

to print the current date, using date(1).

Options:

  -m  Use format %Y%m%c.
  -c  Use format %d%b%Y.
  -l  Translate letters (bytes) to lowercase.

Options cannot be combined (e.g. -mc is invalid).

By default, the format used is %F.

ZZ
  exit 0
}

format=+%F
lc=0

while :
do
  case "$1" in
  -h) Usage;;
  -m) format=+%Y%m%d; shift;;
  -c) format=+%d%b%Y; shift;;
  -l) lc=1; shift;;
  -*) Usage;;
  *) break;;
  esac
done

if [ $# -eq 0 ]
then
  date $format
else
  date $format -d "$*"
fi |
if [ $lc = 0 ]
then
  cat
else
  sed 's/.*/\L&/'
fi