#!/bin/sh
# Copyright (c) 2001 Alcove (Yann Dirson <yann.dirson@fr.alcove.com>) - http://www.alcove.com/
# Copyright (C) 2011 Michael Gilbert <michael.s.gilbert@gmail.com>
# Copyright (C) 2011 Osamu Aoki <osamu@debian.org>
# Copyright (C) 2013 Jörg-Volker Peetz <jvpeetz@web.de>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

set -e

file=""
cmd="/usr/lib/mupdf/mupdf-x11"
while [ "$#" -gt "0" ]; do
    case "$1" in
    -p|-r|-b)
	cmd="$cmd $1 "$2"" && shift ;;
    *)
        test -f "$1" && file="$1" && break ||
            ( echo "error: \"$1\" file not found" && false ) ;;
    esac
    shift
done

tmp=$(tempfile -s .pdf)
case "$file" in
    *.gz|*.Z)  zcat "$file" > "$tmp" && exec 3< "$tmp" && file="/dev/fd/3";;
    *.xz)     xzcat "$file" > "$tmp" && exec 3< "$tmp" && file="/dev/fd/3";;
    *.bz2)    bzcat "$file" > "$tmp" && exec 3< "$tmp" && file="/dev/fd/3";;
esac
rm -f "$tmp"

if [ "$file" = "" ]; then
    exec $cmd || true
else
    exec $cmd "$file" || true
fi
