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# Copyright (C) 2010 Canonical
#
# Authors:
# Michael Vogt
#
# 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; version 3.
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
import sys
if 'gobject' in sys.modules:
import gobject as GObject
GObject #pyflakes
else:
from gi.repository import GObject
class _Version:
@property
def description(self):
pass
@property
def downloadable(self):
pass
@property
def summary(self):
pass
@property
def size(self):
return self.pkginfo.get_size(self.name)
@property
def installed_size(self):
return 0
@property
def version(self):
pass
@property
def origins(self):
return []
class _Package:
def __init__(self, name, pkginfo):
self.name = name
self.pkginfo = pkginfo
@property
def installed(self):
""" returns a _Version object """
if not self.pkginfo.is_installed(self.name):
return None
return self.pkginfo.get_installed(self.name)
@property
def candidate(self):
""" returns a _Version object """
return self.pkginfo.get_candidate(self.name)
@property
def versions(self):
""" a list of available versions (as _Version) to install """
return self.pkginfo.get_versions(self.name)
@property
def is_installed(self):
return self.pkginfo.is_installed(self.name)
@property
def section(self):
return self.pkginfo.get_section(self.name)
@property
def website(self):
return self.pkginfo.get_website(self.name)
@property
def installed_files(self):
return self.pkginfo.get_installed_files(self.name)
class PackageInfo(GObject.GObject):
""" abstract interface for the packageinfo information """
__gsignals__ = {'cache-ready': (GObject.SIGNAL_RUN_FIRST,
GObject.TYPE_NONE,
()),
'cache-invalid':(GObject.SIGNAL_RUN_FIRST,
GObject.TYPE_NONE,
()),
'cache-broken':(GObject.SIGNAL_RUN_FIRST,
GObject.TYPE_NONE,
()),
}
def __getitem__(self, k):
return _Package(k, self)
def __contains__(self, pkgname):
return False
@staticmethod
def version_compare(v1, v2):
""" compare two versions """
return cmp(v1, v2)
@staticmethod
def upstream_version_compare(v1, v2):
""" compare two versions, but ignore the distro specific revisions """
return cmp(v1, v2)
@staticmethod
def upstream_version(v):
""" Return the "upstream" version number of the given version """
return v
def is_installed(self, pkgname):
pass
def is_available(self, pkgname):
pass
def get_installed(self, pkgname):
pass
def get_candidate(self, pkgname):
pass
def get_versions(self, pkgname):
return []
def get_section(self, pkgname):
pass
def get_summary(self, pkgname):
pass
def get_description(self, pkgname):
pass
def get_website(self, pkgname):
pass
def get_installed_files(self, pkgname):
return []
def get_size(self, pkgname):
return -1
def get_installed_size(self, pkgname):
return -1
def get_origins(self, pkgname):
return []
def get_addons(self, pkgname, ignore_installed=False):
""" :return: a tuple of pkgnames (recommends, suggests) """
return ([], [])
def get_packages_removed_on_remove(self, pkg):
""" Returns a package names list of reverse dependencies
which will be removed if the package is removed."""
return []
def get_packages_removed_on_install(self, pkg):
""" Returns a package names list of dependencies
which will be removed if the package is installed."""
return []
def get_total_size_on_install(self, pkgname, addons_install=None,
addons_remove=None):
""" Returns a tuple (download_size, installed_size)
with disk size in KB calculated for pkgname installation
plus addons change.
"""
return (0, 0)
def open(self):
"""
(re)open the cache, this sends cache-invalid, cache-ready signals
"""
pass
@property
def ready(self):
pass
# singleton
pkginfo = None
def get_pkg_info():
global pkginfo
if pkginfo is None:
from softwarecenter.enums import USE_PACKAGEKIT_BACKEND
if not USE_PACKAGEKIT_BACKEND:
from softwarecenter.db.pkginfo_impl.aptcache import AptCache
pkginfo = AptCache()
else:
from softwarecenter.db.pkginfo_impl.packagekit import PackagekitInfo
pkginfo = PackagekitInfo()
return pkginfo
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