Add overwrite argument

link-tool.py

@@ -65,8 +65,13 @@ def load_config(conf_path: str) -> Tuple[Conf, List[Link]]:
 
     return conf, links
 
-def make_link(links: List[Link], dry_run=False):
+def make_link(links: List[Link], dry_run=False, overwrite=False):
     for link in links:
+        if os.path.exists(link.dst):
+            if not overwrite:
+                logger.info('dst exists, skipping: {}'.format(link.dst))
+                return
+
         if os.path.exists(link.dst):
             logger.warning('dst exists, removing: {}'.format(link.dst))
             if not dry_run:
@@ -86,6 +91,8 @@ def main():
     parser = argparse.ArgumentParser()
     parser.add_argument('-c', '--config', required=True,
                         help='configuration file')
+    parser.add_argument('-o', '--overwrite', action='store_true',
+                        help='overwrite dst when exists')
     parser.add_argument('-n', '--dry-run', action='store_true',
                         help='dry run without actually create link')
     parser.add_argument('-v', '--verbose', action='store_true',
@@ -96,6 +103,7 @@ def main():
     config_path = args.config
     verbose = args.verbose
     dry_run = args.dry_run
+    overwrite = args.overwrite
 
     logging.basicConfig(level=logging.DEBUG if verbose else logging.INFO)
 
@@ -115,7 +123,7 @@ def main():
     logger.info('the CWD realpath: {}'.format(os.path.realpath(chdir_target)))
     os.chdir(chdir_target)
 
-    make_link(links, dry_run=dry_run)
+    make_link(links, dry_run=dry_run, overwrite=overwrite)
 
 if __name__ == '__main__':
     main()