blob: 99c1f802708a2907f306a7292ac19d57efec049a [file] [log] [blame] [edit]
# Copyright 2017 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""This module contains Google Storage utilities.
TODO(ayatane): This should be merged into chromite.lib.gs
"""
import re
# See https://cloud.google.com/storage/docs/bucket-naming#objectnames
# Banned characters: []*?#
# and control characters (hex): 00-1f, 7f-84, 86-ff
_INVALID_GS_PATTERN = r'[[\]*?#\x00-\x1f\x7f-\x84\x86-\xff]'
def escape(name):
"""Escape GS object name.
@param name: Name string.
@return: Escaped name string.
"""
return re.sub(_INVALID_GS_PATTERN,
lambda x: _percent_escape(x.group(0)), name)
def _percent_escape(char):
"""Percent escape a character.
@param char: character to escape.
@return: Escaped string.
"""
return '%{:02x}'.format(ord(char))