gsgp/util/inv-rm

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#!/bin/bash
#
# Removes an item from the inventory
#
# Copyright (C) 2011 Mike Gerwitz
#
# This file is part of gsgp. 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, 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/>.
##
mypath=$( dirname $0 )
. "$mypath/common-inv"
if [ $# -lt 1 ]; then
echo "Usage: $0 ITEM"
fi
item_id="$1"
inv_item_file="$( $mypath/getinvpath )/$item_id"
count=$( "$mypath/inv-count" $item_id )
# can't remove an item that's not in the inventory
if [ $count -eq 0 ]; then
echo "$item_id: not in inventory" >&2
exit 1
fi
# remove an item from the item inventory
sed -i '1d' "$inv_item_file"
# if all the items have been removed, then remove the file to speed up inventory
# scanning and to keep the filesystem clean
(( count-- ))
if [ $count -eq 0 ]; then
rm "$inv_item_file"
fi