Project import generated by Copybara.
GitOrigin-RevId: d9e9e3fb4e31372ec1fb43b178994ca78fa8fe70
diff --git a/project/project_constants.py b/project/project_constants.py
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+++ b/project/project_constants.py
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+# Copyright 2020 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://developers.google.com/open-source/licenses/bsd
+
+"""Some constants used for managing Monorail Projects."""
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+
+import re
+
+PROJECT_NAME_PATTERN = '[a-z0-9][-a-z0-9]*[a-z0-9]'
+
+MAX_PROJECT_NAME_LENGTH = 63
+
+# Pattern to match a valid project name. Users of this pattern MUST use
+# the re.VERBOSE flag or the whitespace and comments we be considered
+# significant and the pattern will not work. See "re" module documentation.
+_RE_PROJECT_NAME_PATTERN_VERBOSE = r"""
+ (?=[-a-z0-9]*[a-z][-a-z0-9]*) # Lookahead to make sure there is at least
+ # one letter in the whole name.
+ [a-z0-9] # Start with a letter or digit.
+ [-a-z0-9]* # Follow with any number of valid characters.
+ [a-z0-9] # End with a letter or digit.
+"""
+
+# Compiled regexp to match the project name and nothing more before or after.
+RE_PROJECT_NAME = re.compile(
+ '^%s$' % _RE_PROJECT_NAME_PATTERN_VERBOSE, re.VERBOSE)