#!/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>
#
# 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=""
many=""
pages=""
cmd="xpdf.real"
while [ "$#" -gt "0" ]; do
    case "$1" in
    # options that take a value, in manpage order (obsolete options trailing)
    -g|-geometry|-rgb|-papercolor|-mattecolor|-z|-ps|-paper|-paperw|-paperh|-enc|-opw|-upw|-pagecmd|-remote|-exec|-cfg|-display|-fg|-foreground|-bg|-background|-font|-fn|-aa|-aaVector|-eol|-freetype|-t1lib)
	cmd="$cmd $1 "$2"" && shift ;;
    -title)
        title="$2" && shift ;;
    -m)
        shift
        while [ "$#" -gt "0" ]; do
            case "$1" in
                -*) break ;;
                *) many=$(printf "%s\n%s" "$1" "$many") ;;
            esac
            shift
        done
        break ;;
    -*)
        cmd="$cmd $1" ;;
    *)
        test -f "$1" && file="$1" && shift && pages="$@" && break ||
            (
                if [ -d "$1" ]; then
                    echo "error: \"$1\" is a directory" && false
                else
                    echo "error: \"$1\" file not found" && false
                fi
            ) ;;
    esac
    shift
done

if [ "$many" != "" ]; then
    cmd=$(echo "$cmd" | sed s/xpdf\.real/xpdf/g)
    printf "%s\n" "$many" | while read -r file; do
        test ! -f "$file" || $cmd "$file" &
    done
else
    tmp=$(mktemp --suffix=.pdf)
    case "$file" in
        *.gz|*.Z|*.xz|*.lzma|*.bz2) test "$title" != "" || title="Xpdf: $file";;
    esac
    case "$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";;
        *.lzma)   lzcat "$file" > "$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 $cmd || true
    elif [ "$title" = "" ]; then
        exec $cmd "$file" $pages || true
    else
        exec $cmd -title "$title" "$file" $pages || true
    fi
fi