Add --version option to lb-describe-platform

LbPlatformUtils/describe.py

@@ -103,11 +103,28 @@ def main(args=None):
             lambda self, *args, **kwargs: self.parse_args_(*args, **kwargs)[0])
         ArgumentParser = optparse.OptionParser
 
+    from LbPlatformUtils import __version__
+
     parser = ArgumentParser()
+
+    if not hasattr(parser, 'add_option'):  # pragma no cover
+        # this is valid only for ArgumentParser
+        parser.add_argument(
+            '--version',
+            action='version',
+            version='%(prog)s {0}'.format(__version__))
+    else:  # pragma no cover
+        # this is the OptionParser
+        parser.version = '%prog {0}'.format(__version__)
+        parser.add_argument(
+            '--version',
+            action='version',
+            help="show program's version number and exit")
+
     parser.add_argument(
         '--platforms-list',
         help='path to a file containing the list of '
-        'platforms (see {} for the format)'.format(BINARY_TAGS_URL))
+        'platforms (see {0} for the format)'.format(BINARY_TAGS_URL))
     parser.add_argument(
         '--flags',
         action='store_true',

shell-completion/bash/_lb-describe-platform

@@ -16,7 +16,7 @@ _lb-describe-platform()
   _split_longopt && split=true
 
   case $prev in
-    --help|-h)
+    --help|-h|--version)
       return 0
       ;;
     --platforms-list)
@@ -24,6 +24,6 @@ _lb-describe-platform()
       return 0
       ;;
   esac
-  COMPREPLY=($(compgen -W "--help --platforms-list --flags --raw --no-platforms" -- $cur))
+  COMPREPLY=($(compgen -W "--help --version --platforms-list --flags --raw --no-platforms" -- $cur))
 }
 complete -F _lb-describe-platform lb-describe-platform