Move cli abstraction

src/phi/cli.py

@@ -0,0 +1,47 @@
+import sys
+import argparse
+import inspect
+from phi.logging import setup_logging, get_logger
+
+log = get_logger(__name__)
+
+parser = argparse.ArgumentParser()
+subparses = parser.add_subparsers(title='actions', dest='action')
+
+cli_callbacks = {}
+
+
+def register(action_info='', param_infos=[]):
+    def decorator(action):
+        # Get function name and arguments
+        action_name = action.__name__
+        param_names = inspect.getfullargspec(action)[0]
+
+        # Create subparser for specific action
+        subparser = subparses.add_parser(action_name, help=action_info)
+
+        for i, name in enumerate(param_names):
+            info = param_infos[i] if i<len(param_infos) else ''
+            subparser.add_argument(dest=name, help=info)
+
+        # Register action
+        cli_callbacks[action_name] = action, param_names
+        return action
+
+    return decorator
+
+
+def run(args):
+    for action_name, (action, param_names) in cli_callbacks.items():
+        if args['action'] == action_name:
+            action(**{pname: args[pname] for pname in param_names})
+
+
+def add_arg(name, example, info):
+    parser.add_argument(name, metavar=example, help=info)
+
+
+def get_args():
+    namespace = parser.parse_args(sys.argv[1:])
+    args = namespace.__dict__
+    return args

src/phicli

@@ -1,64 +1,24 @@
 #!/usr/bin/env python3
 from pprint import pformat as pp
-import sys
-import argparse
-import inspect
 
-import phi.ldap.client
 from phi.config import get_config
 from phi.logging import setup_logging, get_logger
-
+from phi import cli
+import phi.ldap.client
 from phi.ldap.user import get_user_by_uid
 
 log = get_logger(__name__)
 
-parser = argparse.ArgumentParser()
-parser.add_argument(
-    '--config', metavar='config.yml', help='custom configuration file')
-subparses = parser.add_subparsers(title='actions', dest='action')
 
-cli_callbacks = {}
-
-
-def cli_register(action_info='', param_infos=[]):
-    def decorator(action):
-        # Get function name and arguments
-        action_name = action.__name__
-        param_names = inspect.getfullargspec(action)[0]
-
-        # Create subparser for specific action
-        subparser = subparses.add_parser(action_name, help=action_info)
-
-        for name, info in zip(param_names, param_infos):
-            subparser.add_argument(dest=name, help=info)
-
-        # Register action
-        cli_callbacks[action_name] = action, param_names
-        return action
-
-    return decorator
-
-
-def cli_run(args):
-    for action_name, (action, param_names) in cli_callbacks.items():
-        if args['action'] == action_name:
-            action(**{pname: args[pname] for pname in param_names})
-
-
-def cli_get_args():
-    namespace = parser.parse_args(sys.argv[1:])
-    args = namespace.__dict__
-    return args
-
-
-@cli_register('dispaly user field', ['user identifier'])
+@cli.register('dispaly user field', ['user identifier'])
 def showuser(uid):
     user = get_user_by_uid(client, uid)
     print('\nuid: {}\n{}\n\n'.format(uid, pp(user)))
 
 
 if __name__ == '__main__':
-    args = cli_get_args()
+    cli.add_arg('--config', 'config.yml', 'custom configuration file')
+    args = cli.get_args()
 
     config_file = args['config']
 
@@ -75,7 +35,7 @@ if __name__ == '__main__':
 
     log.info('Arguments: {}'.format(pp(args)))
 
-    cli_run(args)
+    cli.run(args)
 
     log.info('Closing LDAP client')
     client.close()