contrib/*: Support the "--help" and "--version" options

Add "--help"/"-h" and "--version"/"-V" support to all contrib scripts.
Also, update scripts that used "-v" as a short option for "--version"
and use "-V" for the sake of consistency.

Additionally:

* Move version and usage messages to separate convenience functions in
  all scripts.

* Add a workaround to paccache to support "--help" and "--version". This
  should be replaced by a proper POSIX-compliant command line parser
  that supports long options in a future patch.

* Add a "$myver" variable to all scripts and use it whenever we refer to
  the program version (e.g. in version messages). Also, use the pacman
  version number everywhere instead of using a different versioning
  scheme for each contrib script. This is achieved by adding a
  "PACKAGE_VERSION" placeholder that is replaced by sed(1) when the
  script is built.

* Ensure we always return with exit status 0 if "--help" is used and
  return with exit status 1 if we display the usage message due to
  invalid arguments.

* Add "AUTOMAKE_OPTIONS = std-options" and add all scripts to
  "bin_SCRIPTS" to make `make installcheck` check that installed scripts
  actually support the "--help" and "--version" options.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 8 insertions, 2 deletions

diff --git a/contrib/pacscripts.in b/contrib/pacscripts.in
index 967f7826..84687145 100755
--- a/contrib/pacscripts.in
+++ b/contrib/pacscripts.in
@@ -25,7 +25,7 @@ set -o nounset
 set -o errexit
 
 declare -r myname='pacscripts'
-progver="0.4"
+declare -r myver='@PACKAGE_VERSION@'
 
 conf="@sysconfdir@/pacman.conf"
 
@@ -57,6 +57,12 @@ usage() {
 	echo "Example: $myname gconf-editor-2.24.1-1-x86_64.pkg.tar.gz"
 }
 
+version() {
+	printf "%s %s\n" "$myname" "$myver"
+	echo 'Copyright (c) 2009 Giulio "giulivo" Fidente <giulivo.navigante@gmail.com>'
+	echo 'Copyright (c) 2009 Xavier Chantry <shiningxc@gmail.com>'
+}
+
 spacman() {
 	if [ $EUID -eq 0 ]; then
 		pacman "$@"
@@ -127,6 +133,6 @@ fi
 
 case "$1" in
 	--help|-h) usage; exit 0 ;;
-	--version|-v) echo "$myname version $progver"; exit 0 ;;
+	--version|-V) version; exit 0 ;;
 	*) print_scriptlet $1 ;;
 esac