freebsd-dev/usr.sbin/bsdconfig/console/screenmap
Devin Teske d4ae33f072 Performance and debugging enhancements:
+ Remove UNAME_P=$(...) from startup/misc -- already supplied by common.subr
+ Use f_getvar instead of $(eval echo \$$var) -- f_getvar is sub-shell free
+ Add `-e' and `-k var' options to f_eval_catch -- increasing use-cases
+ Use f_eval_catch to display errors on failure -- reducing duplicated code
+ Use f_eval_catch when we need output from a command -- improving debugging
+ Optimize f_isinter of strings.subr for performance -- now sub-shell free
+ Improve error checking on pidfiles -- using f_eval_catch and f_isinteger
+ Use $var_to_set arg of f_ifconfig_{inet,netmask} -- eliminate sub-shells
+ Use f_sprintf instead of $(printf ...) -- consolidate sub-shells
+ Use $var_to_set arg of f_route_get_default -- eliminate sub-shells
+ Add f_count to replace $(set -- ...;echo $#) -- eliminate sub-shells
+ Add f_count_ifs to replace $(IFS=x;set -- ...;echo $#) -- no sub-shells
+ Replace var="$var${var:+ }..." in loops with var="$var ..." with a follow-
  up var="${var# }" to trim leading whitespace -- optimize loops
+ Use $var_to_set arg of f_resolv_conf_nameservers -- eliminate sub-shells
+ Comments for the f_eval_catch function
+ Remove a duplicate `local ... desc ...' in f_device_get_all of device.subr
+ Use $var_to_set arg of f_device_capacity -- eliminate sub-shells
+ Whitespace fixes in f_dialog_init of dialog.subr
+ Optimize f_inet_atoi of media/tcpip.subr for performance -- sub-shell free
+ In several cases, send stderr to /dev/null -- clean up runtime execution
+ Change f_err of common.subr to go to program stderr not terminal stderr,
  allowing redirection of output from functions that use f_err
+ Disable debugging when using f_getvar to get variable argument to
  f_startup_rcconf_map_expand of startup/rcconf.subr
+ Use f_replace_all instead of $(echo ... | tr | sed) -- performance
+ Add a $var_to_set option to f_index_{file,menusel_{command,keyword}} of
  common.subr -- centralize sub-shells
2013-12-07 00:31:01 +00:00

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#!/bin/sh
#-
# Copyright (c) 2012-2013 Devin Teske
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
#
############################################################ INCLUDES
BSDCFG_SHARE="/usr/share/bsdconfig"
. $BSDCFG_SHARE/common.subr || exit 1
f_dprintf "%s: loading includes..." "$0"
f_include $BSDCFG_SHARE/dialog.subr
f_include $BSDCFG_SHARE/mustberoot.subr
f_include $BSDCFG_SHARE/sysrc.subr
BSDCFG_LIBE="/usr/libexec/bsdconfig" APP_DIR="080.console"
f_include_lang $BSDCFG_LIBE/$APP_DIR/include/messages.subr
f_index_menusel_keyword $BSDCFG_LIBE/$APP_DIR/INDEX "$pgm" ipgm &&
pgm="${ipgm:-$pgm}"
############################################################ FUNCTIONS
# dialog_menu_main
#
# Display the dialog(1)-based application main menu.
#
dialog_menu_main()
{
local prompt="$msg_screenmap_menu_text"
local menu_list="
'1 $msg_none' '$msg_none_screenmap_desc'
'2 $msg_iso_8859_1_to_ibm437' '$msg_iso_8859_1_to_ibm437_desc'
'3 $msg_iso_8859_7_to_ibm437' '$msg_iso_8859_7_to_ibm437_desc'
'4 $msg_us_ascii_to_ibm327' '$msg_us_ascii_to_ibm327_desc'
'5 $msg_koi8_r_to_ibm866' '$msg_koi8_r_to_ibm866_desc'
'6 $msg_koi8_u_to_ibm866u' '$msg_koi8_u_to_ibm866u_desc'
" # END-QUOTE
local defaultitem= # Calculated below
local hline="$hline_choose_a_screen_map"
local height width rows
eval f_dialog_menu_size height width rows \
\"\$DIALOG_TITLE\" \
\"\$DIALOG_BACKTITLE\" \
\"\$prompt\" \
\"\$hline\" \
$menu_list
case "$( f_sysrc_get scrnmap )" in
[Nn][Oo]|'') defaultitem="1 $msg_none" ;;
iso-8859-1_to_cp437) defaultitem="2 $msg_iso_8859_1_to_ibm437" ;;
iso-8859-7_to_cp437) defaultitem="3 $msg_iso_8859_7_to_ibm437" ;;
us-ascii_to_cp437) defaultitem="4 $msg_us_ascii_to_ibm327" ;;
koi8-r2cp866) defaultitem="5 $msg_koi8_r_to_ibm866" ;;
koi8-u2cp866u) defaultitem="6 $msg_koi8_u_to_ibm866u" ;;
esac
local menu_choice
menu_choice=$( eval $DIALOG \
--title \"\$DIALOG_TITLE\" \
--backtitle \"\$DIALOG_BACKTITLE\" \
--hline \"\$hline\" \
--ok-label \"\$msg_ok\" \
--cancel-label \"\$msg_cancel\" \
--default-item \"\$defaultitem\" \
--menu \"\$prompt\" \
$height $width $rows \
$menu_list \
2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD
)
local retval=$?
f_dialog_menutag_store -s "$menu_choice"
return $retval
}
############################################################ MAIN
# Incorporate rc-file if it exists
[ -f "$HOME/.bsdconfigrc" ] && f_include "$HOME/.bsdconfigrc"
#
# Process command-line arguments
#
while getopts h$GETOPTS_STDARGS flag; do
case "$flag" in
h|\?) f_usage $BSDCFG_LIBE/$APP_DIR/USAGE "PROGRAM_NAME" "$pgm" ;;
esac
done
shift $(( $OPTIND - 1 ))
#
# Initialize
#
f_dialog_title "$msg_system_console_screenmap"
f_dialog_backtitle "${ipgm:+bsdconfig }$pgm"
f_mustberoot_init
#
# Launch application main menu
#
dialog_menu_main || f_die
f_dialog_menutag_fetch mtag
scrnmap_to_set=
case "$mtag" in
"1 $msg_none") # No screenmap, don't touch font
scrnmap_to_set="NO" ;;
"2 $msg_iso_8859_1_to_ibm437") # W-Europe ISO 8859-1 to IBM 437 scrnmap
scrnmap_to_set="iso-8859-1_to_cp437" ;;
"3 $msg_iso_8859_7_to_ibm437") # Greek ISO 8859-7 to IBM 437 screenmap
scrnmap_to_set="iso-8859-7_to_cp437" ;;
"4 $msg_us_ascii_to_ibm327") # US-ASCII to IBM 437 screenmap
scrnmap_to_set="us-ascii_to_cp437" ;;
"5 $msg_koi8_r_to_ibm866") # Russian KOI8-R to IBM 866 screenmap
scrnmap_to_set="koi8-r2cp866" ;;
"6 $msg_koi8_u_to_ibm866u") # Ukrainian KOI8-U to IBM 866u screenmap
scrnmap_to_set="koi8-u2cp866u" ;;
esac
if [ "$scrnmap_to_set" ]; then
f_eval_catch "$0" f_sysrc_set \
'f_sysrc_set scrnmap "%s"' "$scrnmap_to_set" || f_die
break
else
f_die 1 "$msg_unknown_screenmap_selection"
fi
exit $SUCCESS
################################################################################
# END
################################################################################