opensuse: support pkg-map in bin/install-packages

Updates the opensuse element's bin/install-packages script
so that if supports using pkg-map instead of map-packages
for package mapping. To make use of the new change
simply add the -m <element name> to allow install-packages
to know which element namespace to use when installing packages.

Use of the new -m option is off by default.

As part of this change we also updated install-packages
to use getopt for in script argument parsing.

Change-Id: I56da8adf6c445c50c7642e221c6c11ba59330404

elements/opensuse/bin/install-packages

@@ -17,31 +17,65 @@
 set -eu
 set -o pipefail
 
+EXTRA_ARGS=""
+MAP_ELEMENT=""
+
+SCRIPTNAME=$(basename $0)
+function show_options () {
+    echo "Usage: $SCRIPTNAME [package ...]"
+    echo
+    echo "Options:"
+    echo "    -u          -- update all packages"
+    echo "    -d          -- download the packages only"
+    echo "    -m          -- use custom element package map (Example: -m nova)"
+    exit 0
+}
+
 function run_zypper() {
     # TODO: Uncertain if this can ever block wanting input from user
     zypper --non-interactive --gpg-auto-import-keys "$@"
 }
 
-if [ "$1" = "-u" ] ; then
-    run_zypper dist-upgrade
-    exit 0
-elif [ "$1" = "-d" ] ; then
-    EXTRA_ARGS="--download-only"
-    shift
-fi
+TEMP=$(getopt -o hudem: -n $SCRIPTNAME -- "$@")
+if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
+eval set -- "$TEMP"
+
+while true ; do
+    case "$1" in
+        -u) run_zypper dist-upgrade; exit 0;;
+        -d) EXTRA_ARGS="--download-only"; shift;;
+        -m) MAP_ELEMENT=$2; shift 2;;
+        -h) show_options;;
+        --) shift; break ;;
+        *) echo "Error: unsupported option $1."; exit 1;;
+    esac
+done
 
 # Packages that aren't available in the distro but requested for installation
 # can be ignored by adding them to the exclude list
 BLACKLIST=(dkms)
-WHITELIST=()
+WHITELIST=""
 for i in "$@"
 do
-    if [[ ! ${BLACKLIST[*]} =~ $i ]]; then
+    PKG_NAME=$i
+    if [ -n "$MAP_ELEMENT" ]; then
+        PKG_NAME=$(pkg-map --element $MAP_ELEMENT $i)
+    fi
+    if [[ ! ${BLACKLIST[*]} =~ $PKG_NAME ]]; then
         WHITELIST+="$i "
     else
         echo "The package $i is not available and will not be installed"
     fi
 done
+
 if [ -n "$WHITELIST" ]; then
-    run_zypper install $EXTRA_ARGS $(map-packages $WHITELIST)
+    if [ -n "$MAP_ELEMENT" ]; then
+        if ! PKGS=$(pkg-map --element $MAP_ELEMENT $WHITELIST); then
+            echo "bin/pkg-map error. $PKGS"
+            exit 1
+        fi
+    else
+        PKGS=$(map-packages $WHITELIST)
+    fi
+    run_zypper install $EXTRA_ARGS $PKGS
 fi