base.rb in inch-0.7.0

- old
+ new

@@ -34,10 +34,12 @@
       #
       # @abstract Subclass and override #run to implement a new command
       # @note This was adapted from YARD
       #   https://github.com/lsegal/yard/blob/master/lib/yard/cli/command.rb
       class Base
+        EXIT_STATUS_SUCCESS = 0
+
         include TraceHelper
 
         attr_reader :codebase # @return [Codebase::Proxy]
 
         # Helper method to run an instance with the given +args+
@@ -68,9 +70,17 @@
         # Returns a description of the command
         #
         # @return [String]
         def description
           ''
+        end
+
+        # Returns the exit status of the running command.
+        # This can be overridden to customize exit statusses.
+        #
+        # @return [Fixnum] zero (by default)
+        def exit_status
+          EXIT_STATUS_SUCCESS
         end
 
         # Returns the name of the command by which it is referenced
         # in the command list
         #