[misc] 01/02: prebuilder: Add usage message (-h option).

[Daniel Shahaf]

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danielsh-guest pushed a commit to branch master
in repository misc.

commit 9c45486a659b71a87eadebff5c54a41aeb8087fa
Author: Daniel Shahaf <danielsh at apache.org>
Date:   Mon May 22 10:33:55 2017 +0000

    prebuilder: Add usage message (-h option).
---
 prebuilder/rebuild.sh | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/prebuilder/rebuild.sh b/prebuilder/rebuild.sh
index 9131cf1..a85cc6a 100755
--- a/prebuilder/rebuild.sh
+++ b/prebuilder/rebuild.sh
@@ -2,6 +2,7 @@
 
 SCRIPT_PATH="$(realpath $(which "$0"))"
 SCRIPT_DIR="$(dirname $SCRIPT_PATH)"
+MYNAME=`basename -- "$0"`
 
 [ -f "$SCRIPT_DIR/config" ] && . "$SCRIPT_DIR/config"
 
@@ -10,12 +11,26 @@ USE_COWBUILDER=
 NUM_CPU="$(grep -c '^processor' /proc/cpuinfo)"
 ARCH="$(dpkg --print-architecture)"
 
-while getopts b:c o; do
+usage() {
+    echo "$MYNAME: build a package twice with variations"
+    echo ""
+    echo "Synopsis:"
+    echo "    $MYNAME [-b BASETGZ] [-c] [-h] PACKAGENAME"
+    echo ""
+    echo "Options:"
+    echo "  -b BASETGZ    Specify path to pbuilder's --basetgz."
+    echo "  -c            Use cowbuilder."
+    echo "  -h            Show this usage message."
+    echo "  PACKAGENAME   Name of a *.dsc source package file, up to the underscore."
+}
+
+while getopts b:ch o; do
 	case $o in
 	b )	BASEPATH="$OPTARG"
 		[ "${BASEPATH%.cow}" != "${BASEPATH}" ] && USE_COWBUILDER=true
 		;;
 	c )	USE_COWBUILDER=true;;
+	h )	usage; exit 0;;
 	esac
 done
 shift "$(expr $OPTIND - 1)"

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