#! /bin/sh -f
#
# Author: Maurizio Loreti, aka MLO or (HAM) I3NOO
# Work:   University of Padova - Department of Physics
#         Via F. Marzolo, 8 - 35131 PADOVA - Italy
# Phone:  +39 (049) 827-7216   FAX: +39 (049) 827-7102
# EMail:  loreti@pd.infn.it
# WWW:    http://www.pd.infn.it/~loreti/mlo.html
#
# $Id: month,v 1.1 2001/12/07 16:00:34 loreti Exp $

if [ "$#" != "2" ]
then echo "Usage: `basename $0` m y:"
     echo "  \"m\" is an integer between 1 and 12 (month number);"
     echo "  \"y\" is an integer bigger than 1800 (year number)."
     echo "Purpose: PostScript code for a calendar will be printed on stdout."
     exit
fi

if [ $[$1] -lt 1 -o $[$1] -gt 12 ]
then echo "The month number ($1) should be an integer between 1 and 12."
     exit
fi

if [ $[$2] -le 1800 ]
then echo "The year number ($2) should be an integer bigger than 1800."
     exit
fi

# The following awk script copies the file given as argument to stdout,
# changing the first occurrence of the definition of "month" and "year"
# accorging to the parameters $1 and $2.

awk -v month=$1 -v year=$2 '
  /^\/month.*def/ { if (!m) { m++;  $0 = "/month " month " def";} }
  /^\/year.*def/  { if (!y) { y++;  $0 = "/year " year " def"; } }
             { print }
' month_it.ps