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#!/usr/bin/env python
#
# distinfo.py - provide meta information for distro repositories
#
# Copyright (c) 2005 Gustavo Noronha Silva
# 2006-2007 Sebastian Heinlein
#
# Author: Gustavo Noronha Silva <kov@debian.org>
# Sebastian Heinlein <glatzor@ubuntu.com>
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
import os
import gettext
from os import getenv
import ConfigParser
import string
from gettext import gettext as _
import re
class Template:
def __init__(self):
self.name = None
self.child = False
self.match_name = None
self.description = None
self.base_uri = None
self.type = None
self.components = []
self.children = []
self.match_uri = None
self.mirror_set = {}
self.distribution = None
self.available = True
def has_component(self, comp):
''' Check if the distribution provides the given component '''
return comp in map(lambda c: c.name, self.components)
def is_mirror(self, url):
''' Check if a given url of a repository is a valid mirror '''
proto, hostname, dir = split_url(url)
if self.mirror_set.has_key(hostname):
return self.mirror_set[hostname].has_repository(proto, dir)
else:
return False
class Component:
def __init__(self, name, desc=None, long_desc=None):
self.name = name
self.description = desc
self.description_long = long_desc
def get_description(self):
if self.description_long != None:
return self.description_long
elif self.description != None:
return self.description
else:
return None
def set_description(self, desc):
self.description = desc
def set_description_long(self, desc):
self.description_long = desc
def get_description_long(self):
return self.description_long
class Mirror:
''' Storage for mirror related information '''
def __init__(self, proto, hostname, dir, location=None):
self.hostname = hostname
self.repositories = []
self.add_repository(proto, dir)
self.location = location
def add_repository(self, proto, dir):
self.repositories.append(Repository(proto, dir))
def get_repositories_for_proto(self, proto):
return filter(lambda r: r.proto == proto, self.repositories)
def has_repository(self, proto, dir):
return len(filter(lambda r: (r.proto == proto) and dir in r.dir,
self.repositories)) > 0
def get_repo_urls(self):
return map(lambda r: r.get_url(self.hostname), self.repositories)
def get_location(self):
return self.location
def set_location(self, location):
self.location = location
class Repository:
def __init__(self, proto, dir):
self.proto = proto
self.dir = dir
def get_info(self):
return self.proto, self.dir
def get_url(self, hostname):
return "%s://%s/%s" % (self.proto, hostname, self.dir)
def split_url(url):
''' split a given URL into the protocoll, the hostname and the dir part '''
return map(lambda a,b: a, re.split(":*\/+", url, maxsplit=2),
[None, None, None])
class DistInfo:
def __init__(self,
dist = None,
base_dir = "/usr/share/python-apt/templates"):
self.metarelease_uri = ''
self.templates = []
location = None
match_loc = re.compile(r"^#LOC:(.+)$")
match_mirror_line = re.compile(r"^(#LOC:.+)|(((http)|(ftp)|(rsync)|(file)|(https))://[A-Za-z/\.:\-_]+)$")
#match_mirror_line = re.compile(r".+")
if not dist:
pipe = os.popen("lsb_release -i -s")
dist = pipe.read().strip()
pipe.close()
del pipe
self.dist = dist
map_mirror_sets = {}
dist_fname = "%s/%s.info" % (base_dir, dist)
dist_file = open (dist_fname)
if not dist_file:
return
template = None
component = None
for line in dist_file:
tokens = line.split (':', 1)
if len (tokens) < 2:
continue
field = tokens[0].strip ()
value = tokens[1].strip ()
if field == 'ChangelogURI':
self.changelogs_uri = _(value)
elif field == 'MetaReleaseURI':
self.metarelease_uri = value
elif field == 'Suite':
if template:
if component and not template.has_component(component.name):
template.components.append(component)
component = None
self.templates.append(template)
template = Template()
template.name = value
template.distribution = dist
template.match_name = "^%s$" % value
elif field == 'MatchName':
template.match_name = value
elif field == 'ParentSuite':
template.child = True
for nanny in self.templates:
if nanny.name == value:
nanny.children.append(template)
# reuse some properties of the parent template
if template.match_uri == None:
template.match_uri = nanny.match_uri
if template.mirror_set == {}:
template.mirror_set = nanny.mirror_set
if template.base_uri == None:
template.base_uri = nanny.base_uri
elif field == 'Available':
template.available = value
elif field == 'RepositoryType':
template.type = value
elif field == 'BaseURI':
template.base_uri = value
template.match_uri = value
elif field == 'MatchURI':
template.match_uri = value
elif field == 'MirrorsFile':
if not map_mirror_sets.has_key(value):
mirror_set = {}
try:
mirror_data = filter(match_mirror_line.match,
map(string.strip, open(value)))
except:
print "ERROR: Failed to read mirror file"
mirrors = []
for line in mirror_data:
if line.startswith("#LOC:"):
location = match_loc.sub(r"\1", line)
continue
(proto, hostname, dir) = split_url(line)
if mirror_set.has_key(hostname):
mirror_set[hostname].add_repository(proto, dir)
else:
mirror_set[hostname] = Mirror(proto, hostname, dir, location)
map_mirror_sets[value] = mirror_set
template.mirror_set = map_mirror_sets[value]
elif field == 'Description':
template.description = _(value)
elif field == 'Component':
if component and not template.has_component(component.name):
template.components.append(component)
component = Component(value)
elif field == 'CompDescription':
component.set_description(_(value))
elif field == 'CompDescriptionLong':
component.set_description_long(_(value))
if template:
if component:
template.components.append(component)
component = None
self.templates.append(template)
template = None
if __name__ == "__main__":
d = DistInfo ("Ubuntu", "/usr/share/python-apt/templates")
print d.changelogs_uri
for template in d.templates:
print "\nSuite: %s" % template.name
print "Desc: %s" % template.description
print "BaseURI: %s" % template.base_uri
print "MatchURI: %s" % template.match_uri
if template.mirror_set != {}:
print "Mirrors: %s" % template.mirror_set.keys()
for comp in template.components:
print " %s -%s -%s" % (comp.name,
comp.description,
comp.description_long)
for child in template.children:
print " %s" % child.description
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