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#!/bin/bash
# Copyright (c) 2005 Gentoo Foundation.
# $Id$
# This file is part of the 'eselect' tools framework.
#
# eselect 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.
#
# eselect 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
# eselect. If not, see <http://www.gnu.org/licenses/>.
DESCRIPTION="No description available"
VERSION="No version available"
DEFAULT_ACTION="usage"
describe_usage() {
echo "Display usage information"
}
do_usage() {
show_usage_message
if is_function show_extra_help_text ; then
echo
echo "Additional help is available via the 'help' action."
fi
true
}
show_usage_message() {
echo "Usage: ${ESELECT_COMMAND} <action> <options>"
echo
write_list_start "Standard actions:"
for action in "help" "usage" "version" ; do
local desc=""
is_function "describe_${action}" && desc=$(describe_${action} )
write_kv_list_entry "${action}" "${desc:-(no description)}"
done
echo
write_list_start "Extra actions:"
# FIXME: can we do this using expansion somehow?
for action in $(set | \
sed -n -e '/^do_\S\+ ()\s*$/s/^do_\(\S\+\).*/\1/p' | \
grep -v 'action' | \
sort ) ; do
case "${action}" in
help|usage|version)
continue
;;
?*)
local desc="" line="" ifs_save="${IFS}" action_text=""
is_function "describe_${action}" && desc=$(describe_${action} )
if is_function "describe_${action}_parameters" ; then
action_text="${action} $(describe_${action}_parameters)"
else
action_text="${action}"
fi
write_kv_list_entry "${action_text}" "${desc:-(no description)}"
if is_function "describe_${action}_options" ; then
IFS=$'\n'
for line in $(describe_${action}_options) ; do
write_kv_list_entry -p \
" ${line%%*( ):*}" \
" ${line##+([^:]):*( )}"
done
IFS="${ifs_save}"
fi
;;
esac
done
true
}
describe_version() {
echo "Display version information"
}
do_version() {
echo "Version ${VERSION}"
}
describe_help() {
echo "Display help text"
}
do_help() {
echo "${DESCRIPTION}"
show_usage_message
if is_function show_extra_help_text ; then
echo
show_extra_help_text
fi
true
}
# vim: set sw=4 et sts=4 tw=80 :
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