download script: Don't download if argument is invalid

1 files changed, 23 insertions, 34 deletions

diff --git a/download b/download
index 82f7894..3e003a3 100755
--- a/download
+++ b/download
@@ -4,6 +4,7 @@
 #                   aren't distributed in the git repository.
 #
 #	Copyright (C) 2014, 2015 Francis Rowe <info@gluglug.org.uk>
+#	Copyright (C) 2015 Klemens Nanni <contact@autoboot.org>
 #
 #    This program is free software: you can redistribute it and/or modify
 #    it under the terms of the GNU General Public License as published by
@@ -22,40 +23,28 @@
 [ "x${DEBUG+set}" = 'xset' ] && set -v
 set -u -e
 
-download="./resources/scripts/helpers/download"
-programmes="unknown"
+download=./resources/scripts/helpers/download
+availableprogrammes=$(ls ${download}/)
 
-usage="./download programme(s) # programmes are space separated, if specifing multiple programmes"
-availableprogrammes="$(ls ${download}/)"
-
-# User specified no or too few/many parameters
-if [ $# -lt 1 ]; then
-	printf "%s\n\n" "${usage}"
-	printf "possible values for 'programmes':\nall:\n%s\n\n" "${availableprogrammes}"
-	printf "Example (download everything): ./download all\n"
-	printf "Example (download flashrom): ./download flashrom\n"
-	printf "Example (download coreboot): ./download coreboot\n"
-	printf "Example (download coreboot and flashrom): ./download coreboot flashrom\n"
-	printf "Example (lists all available downloadable components): ./download list\n"
-	exit 1
-fi
-programmes="$@"
-
-if [ "${programmes}" = "list" ]; then
-	printf "Available programmes are:\nall\n%s\n" "${availableprogrammes}"
-elif [ "${programmes}" = "all" ]; then
-	for programme in ${availableprogrammes}; do
-		${download}/${programme}
-	done
-else
-	for programme in ${programmes}; do
-		printf "\"%s\"\n" "${programme}"
-		if [ -f "${download}/${programme}" ]; then
+case ${@} in
+	all)
+		for programme in ${availableprogrammes}; do
 			${download}/${programme}
-		else
-			printf "download: WARNING: Invalid programme '%s'. Available programmes are:\nall\n%s\n" "${programmes}" "${availableprogrammes}"
-		fi
-	done
-fi
-
+		done;;
+	list)
+		printf "possible values for 'programmes':\nall:\n%s\n\n" "${availableprogrammes}";;
+	help)
+		printf "%s\n\n" "./download programme(s) # programmes are space separated, if specifing multiple programmes"
+		printf "possible values for 'programmes':\nall:\n%s\n\n" "${availableprogrammes}"
+		printf "Example (download everything): ./download all\n"
+		printf "Example (download flashrom): ./download flashrom\n"
+		printf "Example (download coreboot): ./download coreboot\n"
+		printf "Example (download coreboot and flashrom): ./download coreboot flashrom\n"
+		printf "Example (lists all available downloadable components): ./download list\n";;
+	*)
+		for programme in ${@}; do
+			echo ${availableprogrammes} | grep -wq ${programme} || (printf "ERROR: Invalid programme '${programme}'. See ./download help.\n"; exit 1)
+		done
+		${download}/${@};;
+esac
 # ------------------- DONE ----------------------