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# Copyright © 2012 Piotr Ożarowski <piotr@debian.org>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
import logging
from os import environ, walk
from os.path import abspath, isfile, join
from subprocess import Popen, PIPE
from debpython import PUBLIC_DIR_RE
log = logging.getLogger(__name__)
def from_directory(dname, extensions=('.py',)):
"""Generate *.py file names available in given directory."""
extensions = tuple(extensions) # .endswith doesn't like list
if isinstance(dname, (list, tuple)):
for item in dname:
for fn in from_directory(item, extensions):
yield fn
elif isfile(dname) and dname.endswith(extensions):
yield dname
else:
for root, dirs, file_names in walk(abspath(dname)):
for fn in file_names:
if fn.endswith(extensions):
yield join(root, fn)
def from_package(package_name, extensions=('.py',)):
"""Generate *.py file names available in given package."""
extensions = tuple(extensions) # .endswith doesn't like list
env = environ.copy()
env["LC_ALL"] = "C.UTF-8"
process = Popen(('/usr/bin/dpkg', '-L', package_name), stdout=PIPE,
stderr=PIPE, env=env)
stdout, stderr = process.communicate()
if process.returncode != 0:
raise Exception("cannot get content of %s" % package_name)
stdout = stdout.decode('utf-8', errors='replace')
for line in stdout.splitlines():
if line.endswith(extensions):
yield line
def filter_directory(files, dname):
"""Generate *.py file names that match given directory."""
for fn in files:
if fn.startswith(dname):
yield fn
def filter_public(files, versions):
"""Generate *.py file names that match given versions."""
vstr = set("%d.%d" % i for i in versions)
shared_vstr = set(str(i[0]) for i in versions)
for fn in files:
public_dir = PUBLIC_DIR_RE.match(fn)
if public_dir:
vers = public_dir.group(1)
if vers in shared_vstr or vers in vstr:
yield fn
def filter_out_ext(files, extensions):
"""Removes files with matching extensions from given generator."""
extensions = tuple(extensions) # .endswith doesn't like list
for fn in files:
if not fn.endswith(extensions):
yield fn
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