Revert "Add gsutil 4.13 to telemetry/third_party"

tools/telemetry/third_party/gsutil/gslib/addlhelp/subdirs.py

-# -*- coding: utf-8 -*-
-# Copyright 2012 Google Inc. All Rights Reserved.
-#
-# 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.
-"""Additional help about subdirectory handling in gsutil."""
-
-from __future__ import absolute_import
-
-from gslib.help_provider import HelpProvider
-
-_DETAILED_HELP_TEXT = ("""
-<B>OVERVIEW</B>
-  This section provides details about how subdirectories work in gsutil.
-  Most users probably don't need to know these details, and can simply use
-  the commands (like cp -r) that work with subdirectories. We provide this
-  additional documentation to help users understand how gsutil handles
-  subdirectories differently than most GUI / web-based tools (e.g., why
-  those other tools create "dir_$folder$" objects), and also to explain cost and
-  performance implications of the gsutil approach, for those interested in such
-  details.
-
-  gsutil provides the illusion of a hierarchical file tree atop the "flat"
-  name space supported by the Google Cloud Storage service. To the service,
-  the object gs://your-bucket/abc/def/ghi.txt is just an object that happens to
-  have "/" characters in its name. There are no "abc" or "abc/def" directories;
-  just a single object with the given name. This
-  `diagram <https://cloud.google.com/storage/images/gsutil-subdirectories-thumb.png>`
-  illustrates how gsutil provides a hierarchical view of objects in a bucket.
-
-  gsutil achieves the hierarchical file tree illusion by applying a variety of
-  rules, to try to make naming work the way users would expect. For example, in
-  order to determine whether to treat a destination URI as an object name or the
-  root of a directory under which objects should be copied gsutil uses these
-  rules:
-
-  1. If the destination object ends with a "/" gsutil treats it as a directory.
-     For example, if you run the command:
-
-       gsutil cp your-file gs://your-bucket/abc/
-
-     gsutil will create the object gs://your-bucket/abc/file.
-
-  2. If the destination object is XYZ and an object exists called XYZ_$folder$
-     gsutil treats XYZ as a directory. For example, if you run the command:
-
-       gsutil cp your-file gs://your-bucket/abc
-
-     and there exists an object called abc_$folder$, gsutil will create the
-     object gs://your-bucket/abc/file.
-
-  3. If you attempt to copy multiple source files to a destination URI, gsutil
-     treats the destination URI as a directory. For example, if you run
-     the command:
-
-       gsutil cp -r your-dir gs://your-bucket/abc
-
-     gsutil will create objects like gs://your-bucket/abc/your-dir/file1, etc.
-     (assuming file1 is a file under the source directory).
-
-  4. If none of the above rules applies, gsutil performs a bucket listing to
-     determine if the target of the operation is a prefix match to the
-     specified string. For example, if you run the command:
-
-       gsutil cp your-file gs://your-bucket/abc
-
-     gsutil will make a bucket listing request for the named bucket, using
-     delimiter="/" and prefix="abc". It will then examine the bucket listing
-     results and determine whether there are objects in the bucket whose path
-     starts with gs://your-bucket/abc/, to determine whether to treat the target
-     as an object name or a directory name. In turn this impacts the name of the
-     object you create: If the above check indicates there is an "abc" directory
-     you will end up with the object gs://your-bucket/abc/file; otherwise you
-     will end up with the object gs://your-bucket/abc. (See
-     "HOW NAMES ARE CONSTRUCTED" under "gsutil help cp" for more details.)
-
-  This rule-based approach stands in contrast to the way many tools work, which
-  create objects to mark the existence of folders (such as "dir_$folder$").
-  gsutil understands several conventions used by such tools but does not
-  require such marker objects to implement naming behavior consistent with
-  UNIX commands.
-
-  A downside of the gsutil approach is it requires an extra bucket listing
-  before performing the needed cp or mv command. However those listings are
-  relatively inexpensive, because they use delimiter and prefix parameters to
-  limit result data. Moreover, gsutil makes only one bucket listing request
-  per cp/mv command, and thus amortizes the bucket listing cost across all
-  transferred objects (e.g., when performing a recursive copy of a directory
-  to the cloud).
-""")
-
-
-class CommandOptions(HelpProvider):
-  """Additional help about subdirectory handling in gsutil."""
-
-  # Help specification. See help_provider.py for documentation.
-  help_spec = HelpProvider.HelpSpec(
-      help_name='subdirs',
-      help_name_aliases=[
-          'dirs', 'directory', 'directories', 'folder', 'folders', 'hierarchy',
-          'subdir', 'subdirectory', 'subdirectories'],
-      help_type='additional_help',
-      help_one_line_summary='How Subdirectories Work',
-      help_text=_DETAILED_HELP_TEXT,
-      subcommand_help_text={},
-  )