From: Zane Bitter <zbitter@redhat.com>
Date: Mon, 14 May 2012 15:56:33 +0000 (+0200)
Subject: Make 'heat help' show a list of commands
X-Git-Tag: 2014.1~1827
X-Git-Url: https://review.fuel-infra.org/gitweb?a=commitdiff_plain;h=7a28ec601e5da452f6f8395b8f809acd89bbea19;p=openstack-build%2Fheat-build.git

Make 'heat help' show a list of commands

Previously we just printed an error message about not specifying a command
to get help about, and no hint about how to work out which commands even
existed.

Signed-off-by: Zane Bitter <zbitter@redhat.com>
---

diff --git a/bin/heat b/bin/heat
index e574ff1d..b67d824e 100755
--- a/bin/heat
+++ b/bin/heat
@@ -434,14 +434,14 @@ def print_help(options, args):
     """
     Print help specific to a command
     """
-    if len(args) != 1:
-        sys.exit("Please specify a command")
-
     parser = options.__parser
-    command_name = args.pop()
-    command = lookup_command(parser, command_name)
 
-    print command.__doc__ % {'prog': os.path.basename(sys.argv[0])}
+    if not args:
+        parser.print_usage()
+
+    subst = {'prog': os.path.basename(sys.argv[0])}
+    docs = [lookup_command(parser, cmd).__doc__ % subst for cmd in args]
+    print '\n\n'.join(docs)
 
 
 def lookup_command(parser, command_name):