added a argument for accepting the log file name

Signed-off-by: Tanishq Chaudhary <[email protected]>

Author: Tanishq30052002

ros2launch/ros2launch/command/launch.py

@@ -14,8 +14,10 @@
 
 import os
 import sys
+from email.policy import default
 
 from ament_index_python.packages import PackageNotFoundError
+
 try:
     from argcomplete.completers import FilesCompleter
 except ImportError:
@@ -27,16 +29,14 @@
     # argcomplete < 1.9.0
     SuppressCompleter = object
 from ros2cli.command import CommandExtension
-from ros2launch.api import get_share_file_path_from_package
-from ros2launch.api import is_launch_file
-from ros2launch.api import launch_a_launch_file
-from ros2launch.api import LaunchFileNameCompleter
-from ros2launch.api import MultipleLaunchFilesError
-from ros2launch.api import print_a_launch_file
-from ros2launch.api import print_arguments_of_launch_file
-from ros2launch.option import get_option_extensions
 from ros2pkg.api import package_name_completer
 
+from ros2launch.api import (LaunchFileNameCompleter, MultipleLaunchFilesError,
+                            get_share_file_path_from_package, is_launch_file,
+                            launch_a_launch_file, print_a_launch_file,
+                            print_arguments_of_launch_file)
+from ros2launch.option import get_option_extensions
+
 
 class SuppressCompleterWorkaround(SuppressCompleter):
     """Workaround https://github.com/kislyuk/argcomplete/pull/289 ."""
@@ -79,6 +79,8 @@ def add_arguments(self, parser, cli_name):
         parser.add_argument(
             '-d', '--debug', default=False, action='store_true',
             help='Put the launch system in debug mode, provides more verbose output.')
+        parser.add_argument('-f', '--log-file-name', default=None,
+            help='Name of the logging file')
         command_group = parser.add_mutually_exclusive_group()
         command_group.add_argument(
             '-p', '--print', '--print-description', default=False, action='store_true',