| # 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)) |
