#!/bin/bash
#
# Command-line interface to dpkg-www.
#
# Copyright (C) 1999-2001  Massimo Dal Zotto <dz@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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.

usage() {
    echo "Usage:  ${0##*/} [--stdout] [--] [<query>]"
}

urlencode() {
    perl -e '
        $s=join(" ",@ARGV);
        $s=~s/([^a-zA-Z0-9 _\.*@-])/uc sprintf("%%%02x",ord($1))/eg;
        $s=~s/ /+/g;
        print $s . "\n";
    ' "$*"
}

DPKG_WWW_URL="http://localhost/cgi-bin/dpkg"
X11_BROWSERS="\
    sensible-browser
    x-www-browser
    mozilla galeon gzilla arena chimera chimera2 amaya gnome-help-browser
    opera netscape"
TXT_BROWSERS="\
    sensible-browser
    www-browser lynx lynx-ssl links w3m"

browser=
browser_args=
while [ "${1#-}" != "$1" ]; do
    case "$1" in
	-\?|-h|-help|--help)
	    usage
	    exit
	    ;;
	-x|-xtrace|--xtrace)
	    shift 1
	    set -x
	    ;;
	-s|-stdout|--stdout)
	    shift 1
	    export DISPLAY=""
	    noheader="&noheader=true"
	    if [ -x /usr/bin/lynx ]; then
		browser="lynx"
		browser_args="-dump -nolist"
	    elif [ -x /usr/bin/lynx-ssl ]; then
		browser="lynx"
		browser_args="-dump -nolist"
	    elif  [ -x /usr/bin/links ]; then
		browser="links"
		browser_args=""
	    elif  [ -x /usr/bin/w3m ]; then
		browser="w3m"
		browser_args=""
	    fi
	    ;;
	--|*)
	    break
	    ;;
    esac
done

# Source optional local and user configuration files
test -e /etc/dpkg-www.conf && . /etc/dpkg-www.conf 2>/dev/null
test -e ~/.dpkg-www && . ~/.dpkg-www 2>/dev/null

if [ "$DISPLAY" ]; then
    for f in $browser $DPKG_WWW_BROWSER $X11_BROWSERS $TXT_BROWSERS; do
	if which $f >/dev/null 2>&1; then
	    browser=$f
	    break
	fi
    done
else
    for f in $browser $DPKG_WWW_BROWSER $TXT_BROWSERS; do
	echo $X11_BROWSERS | grep -qw "$f" && continue	# skip X11 $BROWSER
	if which $f >/dev/null 2>&1; then
	    browser=$f
	    break
	fi
    done
fi

if [ ! "$browser" ]; then
    echo "dpkg-www: no WWW browser found" >&2
    exit 1
fi

query=$(urlencode "$*")
if [ "$DEBUG" = 1 -o "$DEBUG" = true ]; then
    echo $browser $browser_args "$DPKG_WWW_URL?query=$query$noheader"
fi
exec $browser $browser_args "$DPKG_WWW_URL?query=$query$noheader"

# end of file
