Add a switch that skips tarball extraction

gentoostrap.sh

@@ -11,7 +11,9 @@ set -e
 # Read-only set-once variables
 declare -r _name="$(basename -- "$0")"
 # Options
+declare -i _optconfigure
 declare -i _optchroot
+declare -i _optchroot2
 declare _optdest="/mnt"
 declare _optprofile="desktop"
 declare -i _opthelp
@@ -78,6 +80,7 @@ printhelp() {
 Usage: $_name [OPTION]...
 
   -h			Print this help text
+  -b			Perform the host half of installation. Should invoke as root
   -c			Perform the Gentoo half of installation. Must be invoked from a chroot
   -d			Perform the second Gentoo half of installation from a chroot
   -v			Print more status messages. Stacks
@@ -125,7 +128,9 @@ build-gentoo() {
 		sudo tar xf "$stage3file" -C "$_optdest"
 	fi
 	unset shouldextract
-
+	configure-gentoo
+}
+configure-gentoo() {
 	# Now we do some pre-chroot configuration
 	pushd "$_optdest" > /dev/null 2>&1
 	# These is a very generic make.conf to get the system up and running
@@ -322,12 +327,15 @@ main() {
 		# Parse out flags
 		while getopts ":cdhv" opt; do
 			case $opt in
-				d)
-					_optchroot2=1
+				b)
+					_optconfigure=1
 					;;
 				c)
 					_optchroot=1
 					;;
+				d)
+					_optchroot2=1
+					;;
 				h)
 					_opthelp=1
 					;;
@@ -365,6 +373,8 @@ main() {
 		build-gentoo-chroot2
 	elif [ -n "$_optchroot" ]; then
 		build-gentoo-chroot
+	elif [ -n "$_optconfigure" ]; then
+		configure-gentoo
 	else
 		build-gentoo
 	fi