#!/bin/bash
#
# Syntax:  figl2eps [-h] [-c] [-d ps_dir] [n]
#
# Purpose: Transforms the n most recently changed .fig files into .eps
#          files using fig2eps.
#          The .eps files are placed in ~/fig/ps or, if the -d flag is
#          specified, in ps_dir (where ps_dir is an absolute or relative
#          path name).
#          By default the fig files are taken from ~/fig/xfig.
#          However, if the -c flag is given, then the fig files are taken
#          from the current directory and the output is placed into the
#          current directory; if in addition -d is specified the .eps files
#          are created in the ps_dir subdirectory of the current directory.
#          The -h flag shows the help info for this command.
#
# See also: fig2eps, figl2ps

# Created: May 19, 1995       by Bart De Schutter
# Last revised: Jan  2, 2011  by Bart De Schutter
#
# See http://www.deschutter.info/util/scripts.html for the latest version of
# this script.

# Status: public
# Category: xfig

#
#  Process input arguments.
#
fig_dir=~/fig/xfig
fig2eps_options=""
while getopts :hcd: option
do
   case "$option" in
      h) sed '/^$/q;/^#!/d;s/^# //;s/^#//' $0 >&2
         exit 1
         ;;
      c) fig_dir=$(pwd)
         fig2eps_options="$fig2eps_options -c"
         ;;
      d) fig2eps_options="$fig2eps_options -d ${OPTARG}"
         ;;
      :) echo >&2
         echo >&2 "Option -$OPTARG requires an argument."
         echo >&2
         sed '/^$/q;/^#!/d;s/^# //;s/^#//' $0 >&2
         echo >&2
         exit 1
         ;;
     \?) echo >&2
         echo >&2 "Unknown option: $OPTARG"
         echo >&2
         sed '/^$/q;/^#!/d;s/^# //;s/^#//' $0 >&2
         exit 1
         ;;
   esac
done
shift $(($OPTIND-1))

if [ $# -eq 0 ]
then
   n=1
else
   n=$1
   case $n in
     [0-9]* )
         ;;
     * )
       echo >&2
       echo >&2 "ERROR: n should be a number."
       echo >&2
       exit 1
  esac
fi

#
# Find the $n most recent fig files, and do some processing in order
# to be able to deal with files that contain a space in their name.
#
fig_files=$( cd "$fig_dir" ; ls -t *.fig 2>/dev/null | \
             head -n $n | sed -e 's/ /\\ /g' | tr "\n" " " )
if [ -z "$fig_files" ]
then
   echo "No fig files found."
else
   eval fig2eps -v $fig2eps_options $fig_files
fi