dman

#!/bin/sh -e
#    dman - download and read manpages from the web, rather than
#           your local system
#
#    Copyright (C) 2008-2010 Dustin Kirkland <kirkland@ubuntu.com>
#
#    Authors:
#        Dustin Kirkland <kirkland@ubuntu.com>
#
#    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 3 of the License.
#
#    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/>.

. /etc/lsb-release
while true; do
	case "$1" in
		--release)
			DISTRIB_CODENAME="$2"
			shift 2
			;;
		*)
			break
			;;
	esac
done
PAGE=`echo "$@" | awk '{print $NF}'`
MAN_ARGS=`echo "$@" | sed "s/\$PAGE$//"`

# Mirror support of man's languages
if [ ! -z "$LANG" ]; then
	LOCALE="$LANG"
fi
if [ ! -z "$LC_MESSAGES" ]; then
	LOCALE="$LC_MESSAGES"
fi
if [ "$LOCALE" = C ]; then
	LOCALE=""
elif [ ! -z "$LOCALE" ]; then
	LOCALE="${LOCALE%%_*}"
fi

URL="http://manpages.ubuntu.com/manpages.gz/"

mandir=`mktemp -d dman.XXXXXX`
trap "rm -rf $mandir" EXIT HUP INT QUIT TERM
for i in `seq 1 9`; do
	man="$mandir/$i"
	if wget -O "$man" "$URL/$DISTRIB_CODENAME/$LOCALE/man$i/$PAGE.$i.gz" 2>/dev/null; then
		man $MAN_ARGS -l "$man" || true
	elif [ ! -z "$LOCALE" -a "$LOCALE" != en ]; then
		if wget -O "$man" "$URL/$DISTRIB_CODENAME//man$i/$PAGE.$i.gz" 2>/dev/null; then
			man $MAN_ARGS -l "$man" || true
		fi
	fi
	rm -f "$man"
done