rcedit.subr revision 244675 
181147Stmmif [ ! "$_STARTUP_RCEDIT_SUBR" ]; then _STARTUP_RCEDIT_SUBR=1
281147Stmm#
381147Stmm# Copyright (c) 2012 Devin Teske
481147Stmm# All rights reserved.
581147Stmm#
681147Stmm# Redistribution and use in source and binary forms, with or without
781147Stmm# modification, are permitted provided that the following conditions
881147Stmm# are met:
981147Stmm# 1. Redistributions of source code must retain the above copyright
1081147Stmm#    notice, this list of conditions and the following disclaimer.
1181147Stmm# 2. Redistributions in binary form must reproduce the above copyright
1281147Stmm#    notice, this list of conditions and the following disclaimer in the
1381392Sjake#    documentation and/or other materials provided with the distribution.
1481147Stmm#
1581147Stmm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
1681392Sjake# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1781147Stmm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1881147Stmm# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
1981147Stmm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
2081147Stmm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2181147Stmm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2281147Stmm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
2381147Stmm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
2481147Stmm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2581147Stmm# SUCH DAMAGE.
2681147Stmm#
2781147Stmm# $FreeBSD: head/usr.sbin/bsdconfig/startup/share/rcedit.subr 244675 2012-12-25 10:47:45Z dteske $
2881147Stmm#
2981147Stmm############################################################ INCLUDES
3086530Sjake
3186530SjakeBSDCFG_SHARE="/usr/share/bsdconfig"
3281147Stmm. $BSDCFG_SHARE/common.subr || exit 1
33112920Sjakef_dprintf "%s: loading includes..." startup/rcedit.subr
34112920Sjakef_include $BSDCFG_SHARE/dialog.subr
3581147Stmmf_include $BSDCFG_SHARE/sysrc.subr
36112920Sjake
3781147StmmBSDCFG_LIBE="/usr/libexec/bsdconfig" APP_DIR="140.startup"
3886530Sjakef_include_lang $BSDCFG_LIBE/$APP_DIR/include/messages.subr
3981147Stmm
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