Merge branch 'release/0.6.7' into wdtk

Conflicts:
  config/general.yml-example

1 files changed, 26 insertions, 0 deletions

diff --git a/lib/tasks/usage.rb b/lib/tasks/usage.rb
new file mode 100644
index 000000000..d6aac454d
--- /dev/null
+++ b/lib/tasks/usage.rb
@@ -0,0 +1,26 @@
+module Usage
+
+    def usage_message message
+        puts ''
+        puts message
+        puts ''
+        exit 0
+    end
+
+    def check_for_env_vars(env_vars, example)
+        missing = []
+        env_vars.each do |env_var|
+            unless ENV[env_var]
+                missing << env_var
+            end
+        end
+        if !missing.empty?
+            usage = "Usage: This task requires #{env_vars.to_sentence} - missing #{missing.to_sentence}"
+            if example
+                usage += "\nExample: #{example}"
+            end
+            usage_message usage
+        end
+    end
+
+end
\ No newline at end of file