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#!/usr/bin/python
# vim: fileencoding=utf8 foldmethod=marker
# {{{ License header: GPLv2+
# This file is part of cnucnu.
#
# Cnucnu 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 2 of the License, or
# (at your option) any later version.
#
# Cnucnu 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 cnucnu. If not, see <http://www.gnu.org/licenses/>.
# }}}
""" :author: Till Maas
:contact: opensource@till.name
:license: GPLv2+
"""
__docformat__ = "restructuredtext"
from twisted.web.client import getPage
#from twisted.internet import reactor
import pprint as pprint_module
pp = pprint_module.PrettyPrinter(indent=4)
pprint = pp.pprint
def get_html(url, callback=None, errback=None):
if url.startswith("ftp://"):
import urllib
req = urllib.urlopen(url)
data = req.read()
if callback:
try:
for cb in callback:
cb(data)
except TypeError:
callback(data)
return data
else:
if callback:
df = getPage(url)
try:
for cb in callback:
df.addCallback(cb)
except TypeError:
df.addCallback(callback)
if errback:
try:
for eb in errback:
df.addErrback(eb)
except TypeError:
df.addErrback(errback)
else:
import StringIO
import pycurl
res = StringIO.StringIO()
c = pycurl.Curl()
c.setopt(pycurl.URL, url.encode("ascii"))
c.setopt(pycurl.WRITEFUNCTION, res.write)
c.setopt(pycurl.FOLLOWLOCATION, 1)
c.setopt(pycurl.MAXREDIRS, 10)
c.perform()
c.close()
# this causes a hangug if reactor.run() was already called once
#df = getPage(url)
#df.addCallback(res.write)
#df.addCallback(lambda ignore: reactor.stop())
#reactor.run()
data = res.getvalue()
res.close()
return data
def rpm_cmp(v1, v2):
import rpm
diff = rpm.labelCompare((None, v1, None), (None, v2, None))
return diff
def rpm_max(list):
list.sort(cmp=rpm_cmp)
return list[-1]
def upstream_cmp(v1, v2):
""" Compare two upstream versions
:Parameters:
v1 : str
Upstream version string 1
v2 : str
Upstream version string 2
:return:
- -1 - second version newer
- 0 - both are the same
- 1 - first version newer
:rtype: int
"""
v1, rc1 = split_rc(v1)
v2, rc2 = split_rc(v2)
diff = rpm_cmp(v1, v2)
# base versions are the same, check for rc-status
if diff == 0:
# both are rc, higher rc is newer
if rc1 and rc2:
return cmp(rc1, rc2)
# only first is rc, then second is newer
elif rc1:
return -1
# only second is rc, then first is newer
elif rc2:
return 1
# none is rc, both are the same
else:
return 0
# base versions are different, ignore rc-status
else:
return diff
def split_rc(version):
""" Split version into version and release candidate string if possible
"""
import re
RC = re.compile("([^-rp]*)(-?(([Rr][Cc]|[Pp][Rr][Ee])[0-9]?))?")
match = RC.match(version)
v = match.groups()[0]
rc = match.groups()[2]
if rc:
return (v, rc)
else:
# if version contains a dash, but no release candidate string is found, v != version, therfore use version here
# Example version: 1.8.23-20100128-r1100
# Then: v=1.8.23, but rc=""
return (version, "")
def get_rc(release):
import re
RC = re.compile(r'0\.[0-9]*\.(([Rr][Cc]|[Pp][Rr][Ee])[0-9])')
match = RC.match(release)
if match:
rc = match.groups()[0]
return rc
else:
return ""
def upstream_max(list):
list.sort(cmp=upstream_cmp)
return list[-1]
def cmp_upstream_repo(upstream_v, repo_vr):
repo_rc = get_rc(repo_vr[1])
repo_version = "%s%s" % (repo_vr[0], repo_rc)
return upstream_cmp(upstream_v, repo_version)
""" return a dict that only contains keys that are in key_list
"""
def filter_dict(d, key_list):
return dict([v for v in d.items() if v[0] in key_list])
def secure_download(url, cainfo=""):
import pycurl
import StringIO
c = pycurl.Curl()
c.setopt(pycurl.URL, url.encode("ascii"))
# -k / --insecure
# c.setopt(pycurl.SSL_VERIFYPEER, 0)
# Verify certificate
c.setopt(pycurl.SSL_VERIFYPEER, 1)
# Verify CommonName or Subject Alternate Name
c.setopt(pycurl.SSL_VERIFYHOST, 2)
# --cacert
if cainfo:
c.setopt(pycurl.CAINFO, cainfo)
res = StringIO.StringIO()
c.setopt(pycurl.WRITEFUNCTION, res.write)
# follow up to 10 http location: headers
c.setopt(pycurl.FOLLOWLOCATION, 1)
c.setopt(pycurl.MAXREDIRS, 10)
c.perform()
c.close()
data = res.getvalue()
res.close()
return data
def match_interval(text, regex, begin_marker, end_marker):
""" returns a list of match.groups() for all lines after a line
like begin_marker and before a line like end_marker
"""
res = []
inside = False
for line in text.splitlines():
if not inside:
if line == begin_marker:
inside = True
else:
match = regex.match(line)
if match:
yield match.groups()
elif line == end_marker:
inside = False
break
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