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#!/bin/bash
#
# **** License ****
# Version: VPL 1.0
#
# The contents of this file are subject to the Vyatta Public License
# Version 1.0 ("License"); you may not use this file except in
# compliance with the License. You may obtain a copy of the License at
# http://www.vyatta.com/vpl
#
# Software distributed under the License is distributed on an "AS IS"
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
# the License for the specific language governing rights and limitations
# under the License.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2006, 2007 Vyatta, Inc.
# All Rights Reserved.
#
# Author: Tom Grennan
# Date: 2007
# Description: setup bash completion for Vyatta operational commands
#
# **** End License ****
# first set vars per args of the "source ...vyatta-op VAR=FOO"
_vyatta_extglob=$(shopt -p extglob)
shopt -s extglob
for e ; do
if [[ $e == *=* ]] ; then
eval $e
fi
done
eval $_vyatta_extglob
unset _vyatta_extglob
test -f /etc/default/vyatta && source /etc/default/vyatta
: ${vyatta_op_templates:=/opt/vyatta/share/vyatta-op/templates}
declare -a _vyatta_op_comp_words
declare -a _vyatta_op_allowed
declare _vyatta_op_node_def
declare -x OFR_PAGER
declare -x OFR_DEFAULT_PAGER
_vyatta_op_get_node_def_field ()
{
local file=$1 field=$2
sed -n '/^'"$field"':/,$ {
# strip field name and hold rest of line
s/[a-z]*: *//
h
:b
# at EOF, print hold buffer and quit
$ { x; p; q }
# input next line
n
# if start of another field def, print hold buf and quit
/^[a-z]*:/ { x; p; q }
# add to hold buf and branch to input next line
H
bb
}' $file
}
_vyatta_op_set_allowed_subdirs ()
{
local dir=$1
_vyatta_op_allowed=(
$( find ${vyatta_op_templates}$1/* -maxdepth 0 -type d -printf %f\\n ))
}
_vyatta_op_set_allowed ()
{
local nullglob=$( shopt -p nullglob )
shopt -s nullglob
_vyatta_op_allowed=($(
eval "$( _vyatta_op_get_node_def_field $_vyatta_op_node_def allowed )" ))
eval $nullglob
}
_vyatta_op_is_allowed ()
{
local arg=$1 allowed
# return immediately if nothing allowed
[ ${#_vyatta_op_allowed[@]} -ne 0 ] || return
# -- is wildcard that allows anything
[ ${_vyatta_op_allowed[0]} == -- ] && return
for allowed in ${_vyatta_op_allowed[@]} ; do
[ "$arg" == $allowed ] && return
done
false
}
_vyatta_op_scan ()
{
local -a argv=( $@ )
local -i i=0 argc=$#
local arg dir node_def
local -a allowed
while true ; do
if [ -d ${vyatta_op_templates}${dir}/node.tag ] ; then
node_def=${vyatta_op_templates}${dir}/node.tag/node.def
if [ ! -f $node_def ] ; then
echo -e \\ninvalid template, missing: >&2
echo -e \\t$_vyatta_op_node_def >&2
return 1
fi
_vyatta_op_node_def=$node_def
_vyatta_op_set_allowed $@
[[ $i -eq $argc ]] && return 0
arg=${argv[i]}; let i++
if _vyatta_op_is_allowed $arg ; then
dir+=/node.tag
_vyatta_op_set_allowed_subdirs $dir
continue
elif [[ $i -ne $argc ]] ; then
echo -e \\ninvalid option: $arg >&2
return 1
fi
fi
[[ $i -eq $argc ]] && return 0
arg=${argv[i]}; let i++
node_def=${vyatta_op_templates}${dir}/${arg}/node.def
if [ -f $node_def ] ; then
dir+=/${arg}
_vyatta_op_node_def=$node_def
_vyatta_op_set_allowed_subdirs $dir
continue
elif [[ $i -ne $argc ]] ; then
echo -e \\ninvalid template, missing node.\{def,tag\} >&2
echo -e \\t${vyatta_op_templates}$dir/$arg >&2
return 1
fi
done
}
_vyatta_op_expand ()
{
local cur=${COMP_WORDS[COMP_CWORD]}
if _vyatta_op_scan "${COMP_WORDS[@]}" ; then
COMPREPLY=($( compgen -W "${_vyatta_op_allowed[*]}" -- $cur ))
_vyatta_op_comp_words=( ${COMP_WORDS[@]} )
fi
}
_vyatta_op_help ()
{
local help
if _vyatta_op_scan ${_vyatta_op_comp_words[@]} ; then
eval help=$( _vyatta_op_get_node_def_field $_vyatta_op_node_def help )
echo -e "$help"
fi
}
_vyatta_op_run ()
{
if _vyatta_op_scan $@ ; then
eval "$( _vyatta_op_get_node_def_field $_vyatta_op_node_def run )"
fi
}
for p in $PAGER pager most less more cat ; do
if type -t $p &>/dev/null ; then
OFR_DEFAULT_PAGER=$p
break
fi
done
: ${OFR_PAGER:=${OFR_DEFAULT_PAGER}}
if [[ -d $vyatta_op_templates ]]
then
for xd in ${vyatta_op_templates}/!(README|*~|*.bak|*.swp|\#*\#) ; do
if [ -d $xd ] ; then
cmd=${xd##*/}
complete -F _vyatta_op_expand -o nospace $cmd
eval alias $cmd=\'_vyatta_op_run $cmd\'
fi
done
fi
bind -x '"\e?": _vyatta_op_help'
shopt -s histverify
### Local Variables:
### mode: shell-script
### End:
|
