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# -*- coding: utf-8 -*-
# utils.py
# Copyright (C) 2013 LEAP
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Utils to help in the setup process
"""
import os
import re
import sys
def get_reqs_from_files(reqfiles):
"""
Returns the contents of the top requirement file listed as a
string list with the lines
@param reqfiles: requirement files to parse
@type reqfiles: list of str
"""
for reqfile in reqfiles:
if os.path.isfile(reqfile):
return open(reqfile, 'r').read().split('\n')
def parse_requirements(reqfiles=['requirements.txt',
'requirements.pip',
'pkg/requirements.pip']):
"""
Parses the requirement files provided.
Checks the value of LEAP_VENV_SKIP_PYSIDE to see if it should
return PySide as a dep or not. Don't set, or set to 0 if you want
to install it through pip.
@param reqfiles: requirement files to parse
@type reqfiles: list of str
"""
requirements = []
skip_pyside = os.getenv("LEAP_VENV_SKIP_PYSIDE", "0") != "0"
for line in get_reqs_from_files(reqfiles):
# -e git://foo.bar/baz/master#egg=foobar
if re.match(r'\s*-e\s+', line):
pass
# do not try to do anything with externals on vcs
#requirements.append(re.sub(r'\s*-e\s+.*#egg=(.*)$', r'\1',
#line))
# http://foo.bar/baz/foobar/zipball/master#egg=foobar
elif re.match(r'\s*https?:', line):
requirements.append(re.sub(r'\s*https?:.*#egg=(.*)$', r'\1',
line))
# -f lines are for index locations, and don't get used here
elif re.match(r'\s*-f\s+', line):
pass
# argparse is part of the standard library starting with 2.7
# adding it to the requirements list screws distro installs
elif line == 'argparse' and sys.version_info >= (2, 7):
pass
elif line == 'PySide' and skip_pyside:
pass
# do not include comments
elif line.lstrip().startswith('#'):
pass
else:
if line != '':
requirements.append(line)
return requirements
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