moved code into library

images/lib.sh

@@ -0,0 +1,82 @@
+# Declares helpers for image building
+
+set -e
+[ "$DEBUG" = "1" ] && set -x
+
+
+prepare_nbd_volume() {
+    device=$1
+    if ! `mountpoint -q "$TARGET"`; then
+	sudo mkfs.ext4 "$device"
+	sudo mkdir -p "$TARGET"
+	sudo mount "$device" "$TARGET"
+    fi
+}
+
+require_debootstrap() {
+    type -P debootstrap >/dev/null && return
+    sudo apt-get update
+    sudo apt-get -y install debootstrap
+}
+
+clean_workspace() {
+    sudo rm -rf $TARGET/* $TARGET/.??*
+}
+
+debootstrap() {
+    sudo debootstrap \
+	--arch="$ARCH" \
+	--variant="$VARIANT" \
+	--components="$COMPONENTS" \
+	--include="$PKGS_INCLUDE" \
+	--foreign \
+	"$VERSION" \
+	"$TARGET" \
+	"$MIRROR" \
+	"$SCRIPT"
+}
+
+secondstage() {
+    # This step could be done directly by removing 
+    sudo chroot "$TARGET" /debootstrap/debootstrap --second-stage
+}
+
+patch_target() {
+    patches_dir=$1
+    for file in $(find "$patches_dir" -type f | sed -n "s|^$patches_dir/||p"); do
+	sudo mkdir -p "$TARGET/$(dirname $file)"
+	sudo cp "$patches_dir/$file" "$TARGET/$file"
+    done
+}
+
+clean_target() {
+    clean_paths=$1
+    for path in $clean_paths; do
+	if [ -e "$TARGET/$path" ]; then
+	    sudo rm -rf "$TARGET/$path"
+	fi
+    done
+    echo apt-get clean | sudo chroot "$TARGET"
+}
+
+archive_target() {
+    sudo tar -C "$TARGET" -czf "$NAME.tar.gz" .
+}
+
+cli() {
+    case $1 in
+	"tarball")
+	    build_image
+	    archive_target
+	    exit 0
+	    ;;
+	"image")
+	    NBD_DEVICE=$2
+	    prepare_nbd_volume $NBD_DEVICE
+	    build_image
+	    exit 0
+	    ;;
+    esac
+    echo >&2 "usage: [DEBUG=1] $0 (tarball|image)"
+    exit 1
+}