Add the scaffold argument.

This is part of issue #38.

handroll/command.py

@@ -6,7 +6,7 @@
 import os
 import sys
 
-from handroll import logger
+from handroll import logger, scaffolder
 from handroll.configuration import build_config
 from handroll.director import Director
 from handroll.exceptions import AbortError
@@ -60,6 +60,11 @@ def parse_args(argv):
         '-w', '--watch', action='store_true',
         help=_('watch the site for changes and'
                ' run a web server in the output directory'))
+    parser.add_argument(
+        '-s', '--scaffold', action='store',
+        nargs='?', const=scaffolder.LIST_SCAFFOLDS, metavar='scaffold',
+        help=_('make a new handroll site from a scaffold '
+               'or list the available scaffolds'))
     parser.add_argument(
         '-v', '--verbose', action='store_true', help=_('use verbose messages'))
     parser.add_argument(

handroll/scaffolder.py

@@ -0,0 +1,3 @@
+# Copyright (c) 2015, Matt Layman
+
+LIST_SCAFFOLDS = 1

handroll/tests/test_command.py

@@ -6,8 +6,7 @@
 
 import mock
 
-from handroll import logger
-from handroll import command
+from handroll import command, logger, scaffolder
 from handroll.tests import TestCase
 
 
@@ -107,6 +106,25 @@ def test_force_argument(self):
         args = command.parse_args(argv)
         self.assertTrue(args.force)
 
+    def test_scaffold_argument(self):
+        args = command.parse_args(self.arguments)
+        self.assertIsNone(args.scaffold)
+
+        argv = list(self.arguments)
+        argv.append('-s')
+        args = command.parse_args(argv)
+        self.assertEqual(scaffolder.LIST_SCAFFOLDS, args.scaffold)
+
+        argv = list(self.arguments)
+        argv.append('--scaffold')
+        args = command.parse_args(argv)
+        self.assertEqual(scaffolder.LIST_SCAFFOLDS, args.scaffold)
+
+        argv = list(self.arguments)
+        argv.extend(['--scaffold', 'default'])
+        args = command.parse_args(argv)
+        self.assertEqual('default', args.scaffold)
+
 
 class TestMain(TestCase):