#!/bin/bash
#
# Syntax:  fig2pdf [-h] [-c] [-d pdf_dir] [-v] filename [...]
#
# Purpose: Transforms .fig files into .pdf files using fig2dev.
#          The resulting .pdf files are placed in ~/fig/pdf except
#          when the -d or the -c flag is specified. 
#          If the -d flag is specified, then the .pdf files are placed in
#          pdf_dir.
#          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 the -v flag is specified, extra information about succesful
#          transformations is displayed.
#          The -h flag shows the help info for this command.

# Created: Jun 20, 2009       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 options.
#
long_pdf_dir=~/fig/pdf
short_pdf_dir=$long_pdf_dir
fig_dir=~/fig/xfig
verbatim=0
while getopts :hvcd: option
do
   case "$option" in
      h) sed '/^$/q;/^#!/d;s/^# //;s/^#//' $0 >&2
         exit 1
         ;;
      c) fig_dir=$(pwd)
         long_pdf_dir=$(pwd)
         short_pdf_dir="."
         ;;
      d) short_pdf_dir=${OPTARG}
         # Create absolute path name.
         long_pdf_dir=$(cd "$short_pdf_dir" >/dev/null 2>&1 && pwd)
         ;;
      v) verbatim=1
         ;;
      :) 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 [ ! -d "$short_pdf_dir" ];
then
   echo >&2
   echo >&2 "ERROR: The destination directory $short_pdf_dir does not exist."
   echo >&2
   exit 1
fi

if [ $# -eq 0 ];
then 
   echo >&2
   echo >&2 "ERROR: ${0##*/} requires at least 1 input argument."
   echo >&2
   sed '/^$/q;/^#!/d;s/^# //;s/^#//' $0 >&2
   exit 1
fi

#
# Process fig files.
#
cd "$fig_dir"
for fname in "$@"
do
   filename=${fname%.fig}
   basename=${filename##*/}
   if [ -f "${filename}.fig" ];
   then
      fig2dev -L pdf -c "${filename}.fig" > "${long_pdf_dir}/${basename}.pdf"
      if [[ ( $verbatim -eq 1 ) && ( $? -eq 0 ) ]]
      then
         echo "${filename}.fig exported to ${short_pdf_dir}/${filename}.pdf"
      fi
   else
      echo >&2
      echo >&2 "ERROR: file ${filename}.fig not found."
      echo >&2
   fi
done