rcedit.subr revision 244675 
1if [ ! "$_STARTUP_RCEDIT_SUBR" ]; then _STARTUP_RCEDIT_SUBR=1
2#
3# Copyright (c) 2012 Devin Teske
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10#    notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12#    notice, this list of conditions and the following disclaimer in the
13#    documentation and/or other materials provided with the distribution.
14#
15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25# SUCH DAMAGE.
26#
27# $FreeBSD: head/usr.sbin/bsdconfig/startup/share/rcedit.subr 244675 2012-12-25 10:47:45Z dteske $
28#
29############################################################ INCLUDES
30
31BSDCFG_SHARE="/usr/share/bsdconfig"
32. $BSDCFG_SHARE/common.subr || exit 1
33f_dprintf "%s: loading includes..." startup/rcedit.subr
34f_include $BSDCFG_SHARE/dialog.subr
35f_include $BSDCFG_SHARE/sysrc.subr
36
37BSDCFG_LIBE="/usr/libexec/bsdconfig" APP_DIR="140.startup"
38f_include_lang $BSDCFG_LIBE/$APP_DIR/include/messages.subr
39
40############################################################ FUNCTIONS
41
42# f_dialog_rcedit $var [[--] $init ...]
43#
44# Allow the user to enter a new value for a given rc.conf(5) variable. If the
45# user does not cancel or press ESC, the variable will be saved without
46# confirmation.
47#
48# If the second argument is non-NULL, it will be processed as the initial text
49# to be displayed, overriding the default behavior to display the currently
50# configured value as the initial text.
51#
52# If instead the second argument is "--", then the third argument (NULL or
53# otherwise) will be treated as the initial text.
54#
55f_dialog_rcedit()
56{
57	local msg var="$1" _input
58
59	msg=$( printf "$msg_please_enter_a_new_value" \
60	              "$var" "$( f_sysrc_get_default "$var" )" )
61
62	shift 1 # var
63	if [ "$1" ]; then
64		[ "$1" = "--" ] && shift 1 # --
65		_input="$1"
66	else
67		_input=$( f_sysrc_get "$var" )
68	fi
69
70	# Return if user has either pressed ESC or chosen Cancel/No
71	_input=$( f_dialog_input "$msg" "$_input" \
72	                         "$hline_alnum_punc_tab_enter"
73	        ) || return
74
75	# Return if the value has not changed from current
76	local cur_val="$( f_sysrc_get "$var" )"
77	[ "$_input" = "$cur_val" ] && return $SUCCESS
78
79	f_dprintf "%s: [%s]->[%s]" "$var" "$cur_val" "$_input"
80
81	err=$( f_sysrc_set "$var" "$_input" 2>&1 ) ||
82		f_show_msg "$err"
83}
84
85############################################################ MAIN
86
87f_dprintf "%s: Successfully loaded." startup/rcedit.subr
88
89fi # ! $_STARTUP_RCEDIT_SUBR
90