From 97036aeae73cc2a63219c7b792ab5f18c7d98cd1 Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Fri, 1 Feb 2013 09:28:18 +0100
Subject: libexec/app-resolver-maven: Better argument checking. lib/common:
 Starting a way to have a common usage/help semantics.

---
 lib/common | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'lib')

diff --git a/lib/common b/lib/common
index e90f77b..63f712a 100755
--- a/lib/common
+++ b/lib/common
@@ -40,6 +40,21 @@ assert_is_app() {
   fi
 }
 
+usage() {
+  message=${1-}
+
+  if [[ $message != "" ]]
+  then
+    echo $message
+  fi
+
+  if [ "`declare -f usage_inner >/dev/null; echo $?`" = 0 ]
+  then
+    usage_inner >&2
+  fi
+  exit 1
+}
+
 debug() {
   [[ $echo_debug == no ]] || echo "D: $usage_app: $@" 2>&1
 }
-- 
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