#!/bin/sh
#
# Display help information.
#
# File:		hpcm_help
# Author:	Bob Walton <walton@deas.harvard.edu>
# Date:		Thu May  4 10:53:20 EDT 2006
#
# The authors have placed this program in the public
# domain; they make no warranty and accept no liability
# for this program.
#
# RCS Info (may not be true date or author):
#
#   $Author: hc3 $
#   $Date: 2006/05/04 15:01:48 $
#   $RCSfile: hpcm_help,v $
#   $Revision: 1.1 $

case "$1" in
     -doc* )
     		echo "
help [topic]

    Displays the help information for the given topic.
    If the topic is not given, it defaults to \`this_
    contest'.

    This program actually displays a readable file named
    help/topic in the contest directory, where the
    contest directory is the current directory or the
    first ancestor of the current directory that has the
    HPCM_ADDRESS file."
    		exit 1
		;;
esac

case "$1" in
     "")
     		item=this_contest
    		;;
     *)
		item=$1
		;;
esac

# Look for HPCM_ADDRESS file to fine home.
#
if test -r HPCM_ADDRESS
then
    home=.
elif test -r ../HPCM_ADDRESS
then
    home=..
elif test -r ../../HPCM_ADDRESS
then
    home=../..
elif test -r ../../../HPCM_ADDRESS
then
    home=../../..
else
    echo "ERROR: Cannot find HPCM_ADDRESS file"
    exit 1
fi

if test -r $home/help/$item
then
    less $home/help/$item
    exit 0
else
    echo cannot read $home/help/$item
    exit 1
fi