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# Copyright (C) 2009-2023 by the Free Software Foundation, Inc.
#
# This file is part of mailman.client
#
# mailman.client is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by the
# Free Software Foundation, version 3 of the License.
#
# mailman.client is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with mailman.client. If not, see <http://www.gnu.org/licenses/>.
"""setup.py helper functions."""
from __future__ import absolute_import, print_function, unicode_literals
import os
import re
import sys
import codecs
__metaclass__ = type
__all__ = [
'description',
'find_doctests',
'get_version',
'long_description',
'require_python',
]
DEFAULT_VERSION_RE = re.compile(r'(?P<version>\d+\.\d(?:\.\w+)?)')
NL = '\n'
def require_python(minimum):
"""Require at least a minimum Python version.
The version number is expressed in terms of `sys.hexversion`. E.g. to
require a minimum of Python 2.6, use::
>>> require_python(0x206000f0)
:param minimum: Minimum Python version supported.
:type minimum: integer
"""
if sys.hexversion < minimum:
hversion = hex(minimum)[2:]
if len(hversion) % 2 != 0:
hversion = '0' + hversion
split = list(hversion)
parts = []
while split:
parts.append(int(''.join((split.pop(0), split.pop(0))), 16))
major, minor, micro, release = parts
if release == 0xf0:
print('Python {0}.{1}.{2} or better is required'.format(
major, minor, micro))
else:
print('Python {0}.{1}.{2} ({3}) or better is required'.format(
major, minor, micro, hex(release)[2:]))
sys.exit(1)
def get_version(filename, pattern=None):
"""Extract the __version__ from a file without importing it.
While you could get the __version__ by importing the module, the very act
of importing can cause unintended consequences. For example, Distribute's
automatic 2to3 support will break. Instead, this searches the file for a
line that starts with __version__, and extract the version number by
regular expression matching.
By default, two or three dot-separated digits are recognized, but by
passing a pattern parameter, you can recognize just about anything. Use
the `version` group name to specify the match group.
:param filename: The name of the file to search.
:type filename: string
:param pattern: Optional alternative regular expression pattern to use.
:type pattern: string
:return: The version that was extracted.
:rtype: string
"""
if pattern is None:
cre = DEFAULT_VERSION_RE
else:
cre = re.compile(pattern)
with open(filename) as fp:
for line in fp:
if line.startswith('__version__'):
mo = cre.search(line)
assert mo, 'No valid __version__ string found'
return mo.group('version')
raise AssertionError('No __version__ assignment found')
def find_doctests(start='.', extension='.txt'):
"""Find separate-file doctests in the package.
This is useful for Distribute's automatic 2to3 conversion support. The
`setup()` keyword argument `convert_2to3_doctests` requires file names,
which may be difficult to track automatically as you add new doctests.
:param start: Directory to start searching in (default is cwd)
:type start: string
:param extension: Doctest file extension (default is .txt)
:type extension: string
:return: The doctest files found.
:rtype: list
"""
doctests = []
for dirpath, _, filenames in os.walk(start):
doctests.extend(os.path.join(dirpath, filename)
for filename in filenames
if filename.endswith(extension))
return doctests
def long_description(*filenames):
"""Provide a long description."""
res = []
for value in filenames:
base, ext = os.path.splitext(value)
if ext in ('.txt', '.rst'):
with codecs.open(value, 'r', encoding='utf-8') as fp:
value = fp.read()
res.append(value)
if not value.endswith(NL):
res.append('')
return NL.join(res)
def description(filename):
"""Provide a short description."""
with codecs.open(filename, 'r', encoding='utf-8') as fp:
for line in fp:
return line.strip()
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