From 44392705fac485378e053936384e4a310469eb77 Mon Sep 17 00:00:00 2001
From: Devin Teske <dteske@FreeBSD.org>
Date: Tue, 4 Jun 2013 03:47:21 +0000
Subject: [PATCH] Use f_shell_escape() instead of forking to awk. In this case,
 the replacement comes with a great performance increase (as f_shell_escape()
 uses the built-in based f_replaceall() which out-performs forking to awk(1)).
 This should also improve readability slightly.

---
 usr.sbin/bsdconfig/bsdconfig           | 5 ++---
 usr.sbin/bsdconfig/share/device.subr   | 4 +---
 usr.sbin/bsdconfig/share/variable.subr | 5 +++--
 3 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/usr.sbin/bsdconfig/bsdconfig b/usr.sbin/bsdconfig/bsdconfig
index cecedb3eb789..340beb80d2b8 100755
--- a/usr.sbin/bsdconfig/bsdconfig
+++ b/usr.sbin/bsdconfig/bsdconfig
@@ -167,7 +167,6 @@ dialog_menu_main()
 	local defaultitem= # Calculated below
 	local hline=
 
-	local sanitize_awk="{ gsub(/'/, \"'\\\\''\"); print }"
 	local menuitem menu_title menu_help menu_selection index=2
 	for menuitem in $( cd $BSDCFG_LIBE && ls -d [0-9][0-9][0-9].* ); do
 		[ $index -lt ${#DIALOG_MENU_TAGS} ] || break
@@ -185,8 +184,8 @@ dialog_menu_main()
 			menu_program="$menuitem/$menu_program"
 		esac
 
-		menu_title=$( echo "$menu_title" | awk "$sanitize_awk" )
-		menu_help=$( echo "$menu_help" | awk "$sanitize_awk" )
+		f_shell_escape "$menu_title" menu_title
+		f_shell_escape "$menu_help" menu_help
 		setvar "menu_program$tag" "$menu_program"
 		menu_list="$menu_list '$tag' '$menu_title' '$menu_help'"
 
diff --git a/usr.sbin/bsdconfig/share/device.subr b/usr.sbin/bsdconfig/share/device.subr
index f724af47fd28..28e3ee8f914b 100644
--- a/usr.sbin/bsdconfig/share/device.subr
+++ b/usr.sbin/bsdconfig/share/device.subr
@@ -598,12 +598,10 @@ f_device_menu()
 	done
 	[ "$devs" ] || return $FAILURE
 
-	local sanitize_awk="{ gsub(/'/, \"'\\\\''\"); print }"
-
 	local desc menu_list=
 	for dev in $devs; do
 		device_$dev get desc desc
-		desc=$( echo "$desc" | awk "$sanitize_awk" )
+		f_shell_escape "$desc" desc
 		menu_list="$menu_list '$dev' '$desc'"
 	done
 
diff --git a/usr.sbin/bsdconfig/share/variable.subr b/usr.sbin/bsdconfig/share/variable.subr
index 079c5643f379..879eece7ba32 100644
--- a/usr.sbin/bsdconfig/share/variable.subr
+++ b/usr.sbin/bsdconfig/share/variable.subr
@@ -32,6 +32,7 @@ BSDCFG_SHARE="/usr/share/bsdconfig"
 . $BSDCFG_SHARE/common.subr || exit 1
 f_dprintf "%s: loading includes..." variable.subr
 f_include $BSDCFG_SHARE/dialog.subr
+f_include $BSDCFG_SHARE/strings.subr
 
 ############################################################ GLOBALS
 
@@ -130,12 +131,12 @@ f_variable_set_defaults()
 #
 f_dump_variables()
 {
-	local err sanitize_awk="{ gsub(/'/, \"'\\\\''\"); print }"
+	local err
 	if ! err=$(
 		( for handle in $VARIABLES; do
 			f_getvar $handle var || continue
 			f_getvar $var value || continue
-			value=$( echo "$value" | awk "$sanitize_awk" )
+			f_shell_escape "$value" value
 			printf "%s='%s'\n" "$var" "$value"
 		  done > "$VARIABLE_DUMPFILE" ) 2>&1
 	); then