Move CLI code into it's own module

This makes pypkg2mod more like a conventional library/module by moving
the cli code into it's own module.  Making room for additional command
line interfaces

Change-Id: If15b85ac3230adf9cf2bc8a9c1c7a9ac9f31eda9

pymod2pkg/__init__.py

@@ -10,8 +10,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import argparse
-import distro
 import re
 
 
@@ -414,40 +412,3 @@ def module2upstream(mod):
         if pkglist:
             return pkglist[0]
     return mod
-
-
-def main():
-    """for resolving names from command line"""
-    parser = argparse.ArgumentParser(description='Python module name to'
-                                     'package name')
-    group = parser.add_mutually_exclusive_group()
-    group.add_argument(
-        '--dist', help='distribution style (default: %(default)s)',
-        default=distro.LinuxDistribution().id().partition(' ')[0])
-    group.add_argument('--upstream', help='map to OpenStack project name',
-                       action='store_true')
-    parser.add_argument('--pyver', help='Python versions to return. "py" is '
-                        'the unversioned name',
-                        action='append', choices=['py', 'py2', 'py3'],
-                        default=[])
-    parser.add_argument('modulename', help='python module name')
-    args = vars(parser.parse_args())
-
-    pyversions = args['pyver'] if args['pyver'] else ['py']
-
-    if args['upstream']:
-        print(module2upstream(args['modulename']))
-    else:
-        pylist = module2package(args['modulename'], args['dist'],
-                                py_vers=pyversions)
-        # When only 1 version is requested, it will be returned as a string,
-        # for backwards compatibility. Else, it will be a list.
-        if type(pylist) is list:
-            print(' '.join(pylist))
-        else:
-            print(pylist)
-
-
-# for debugging to call the file directly
-if __name__ == "__main__":
-    main()

pymod2pkg/cli/pymod2pkg.py

@@ -0,0 +1,48 @@
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import argparse
+import distro
+
+import pymod2pkg
+
+
+def main():
+    """for resolving names from command line"""
+    parser = argparse.ArgumentParser(description='Python module name to'
+                                     'package name')
+    group = parser.add_mutually_exclusive_group()
+    group.add_argument(
+        '--dist', help='distribution style (default: %(default)s)',
+        default=distro.LinuxDistribution().id().partition(' ')[0])
+    group.add_argument('--upstream', help='map to OpenStack project name',
+                       action='store_true')
+    parser.add_argument('--pyver', help='Python versions to return. "py" is '
+                        'the unversioned name',
+                        action='append', choices=['py', 'py2', 'py3'],
+                        default=[])
+    parser.add_argument('modulename', help='python module name')
+    args = vars(parser.parse_args())
+
+    pyversions = args['pyver'] if args['pyver'] else ['py']
+
+    if args['upstream']:
+        print(pymod2pkg.module2upstream(args['modulename']))
+    else:
+        pylist = pymod2pkg.module2package(args['modulename'], args['dist'],
+                                          py_vers=pyversions)
+        # When only 1 version is requested, it will be returned as a string,
+        # for backwards compatibility. Else, it will be a list.
+        if type(pylist) is list:
+            print(' '.join(pylist))
+        else:
+            print(pylist)

requirements.txt

@@ -3,3 +3,4 @@
 # process, which may cause wedges in the gate later.
 distro
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
+packaging

setup.cfg

@@ -19,7 +19,7 @@ classifier =
 
 [entry_points]
 console_scripts =
-    pymod2pkg = pymod2pkg:main
+    pymod2pkg = pymod2pkg.cli.pymod2pkg:main
 
 [files]
 packages =