#!/bin/bash
#<pre><b>
# Script     : log
# Version    : 2.1
# Author     : Roland Rashleigh-Berry
# Date       : 11-Mar-2007
# Purpose    : View the .log file of the program defined to the exported
#              variable "prog".
# SubScripts : none
# Notes      : You must have set up the system environment variable "prog"
#              to your sas program name (no extension) and have exported it
#              like this:
#              $ prog=progname  # no extension
#              $ export prog
# Usage      : log 
#===============================================================================
# PARAMETERS:
#-pos- -------------------------------description-------------------------------
# N/A  Do not supply any parameters
#===============================================================================
# AMENDMENT HISTORY:
# init --date-- mod-id ----------------------description------------------------
# rrb  22Feb07         "less" used to view log
# rrb  11Mar07         Whatever defined to VISUAL used as viewer else "less"
#===============================================================================
# This is public domain software. No guarantee as to suitability or accuracy is
# given or implied. User uses this code entirely at their own risk.
#===============================================================================

# No parameters allowed
if [ $# -gt 0 ] ; then
  echo "Error: (log) Do not supply any parameters" 1>&2
  exit 2
fi


if [ -z $prog ] ; then
  echo "You have to set \"prog\" equal to your sas program name and export it" 1>&2
  exit 1
fi


if [ -n "$VISUAL" ] ; then
  if [ "$VISUAL" == "less" ] || [ "$VISUAL" == "vi" ] ; then
    # done in current terminal window for "less" and "vi"
    $VISUAL ${prog%.*}.log
  else
    # done as a background task
    $VISUAL ${prog%.*}.log &
  fi
else
  # default is to use "less" in current terminal window
  less ${prog%.*}.log
fi