Merge branch '2411-check-copyright'

[arvados.git] / sdk / python / arvados / commands / ls.py

diff --git a/sdk/python/arvados/commands/ls.py b/sdk/python/arvados/commands/ls.py
old mode 100755 (executable)
new mode 100644 (file)
index cff7b55..86e728e
--- a/sdk/python/arvados/commands/ls.py
+++ b/sdk/python/arvados/commands/ls.py
@@ -1,9 +1,14 @@
-#!/usr/bin/env python
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 from __future__ import print_function
+from __future__ import division
 
 import argparse
 import collections
+import logging
+import re
 import sys
 
 import arvados
@@ -19,7 +24,7 @@ def parse_args(args):
         parents=[arv_cmd.retry_opt])
 
     parser.add_argument('locator', type=str,
-                        help="""Collection UUID or locator""")
+                        help="""Collection UUID or locator, optionally with a subdir path.""")
     parser.add_argument('-s', action='store_true',
                         help="""List file sizes, in KiB.""")
     parser.add_argument('--version', action='version',
@@ -29,24 +34,43 @@ def parse_args(args):
     return parser.parse_args(args)
 
 def size_formatter(coll_file):
-    return "{:>10}".format((coll_file.size + 1023) / 1024)
+    return "{:>10}".format((coll_file.size + 1023) // 1024)
 
 def name_formatter(coll_file):
     return "{}/{}".format(coll_file.stream_name, coll_file.name)
 
-def main(args, stdout, stderr, api_client=None):
+def main(args, stdout, stderr, api_client=None, logger=None):
     args = parse_args(args)
 
     if api_client is None:
         api_client = arvados.api('v1')
 
+    if logger is None:
+        logger = logging.getLogger('arvados.arv-ls')
+
     try:
-        cr = arvados.CollectionReader(args.locator, api_client=api_client,
+        r = re.search(r'^(.*?)(/.*)?$', args.locator)
+        collection = r.group(1)
+        get_prefix = r.group(2)
+
+        cr = arvados.CollectionReader(collection, api_client=api_client,
                                       num_retries=args.retries)
-    except (arvados.errors.ArgumentError,
+        if get_prefix:
+            if get_prefix[-1] == '/':
+                get_prefix = get_prefix[:-1]
+            stream_name = '.' + get_prefix
+            reader = cr.find(stream_name)
+            if not (isinstance(reader, arvados.CollectionReader) or
+                    isinstance(reader, arvados.collection.Subcollection)):
+                logger.error("'{}' is not a subdirectory".format(get_prefix))
+                return 1
+        else:
+            stream_name = '.'
+            reader = cr
+    except (arvados.errors.ApiError,
+            arvados.errors.ArgumentError,
             arvados.errors.NotFoundError) as error:
-        print("arv-ls: error fetching collection: {}".format(error),
-              file=stderr)
+        logger.error("error fetching collection: {}".format(error))
         return 1
 
     formatters = []
@@ -54,7 +78,7 @@ def main(args, stdout, stderr, api_client=None):
         formatters.append(size_formatter)
     formatters.append(name_formatter)
 
-    for f in files_in_collection(cr):
+    for f in files_in_collection(reader, stream_name):
         print(*(info_func(f) for info_func in formatters), file=stdout)
 
     return 0