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- #!/usr/bin/env python
- # Copyright (c) 2005-2007 Canonical
- #
- # AUTHOR:
- # Michael Vogt <mvo@ubuntu.com>
- #
- # This file is part of GDebi
- #
- # GDebi 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.
- #
- # GDebi 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 GDebi; if not, write to the Free Software
- # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- #
-
-
- import sys
- import os
- import string
- import warnings
- warnings.filterwarnings("ignore", "apt API not stable yet", FutureWarning)
-
- import apt
- import apt_pkg
-
- from DebPackage import DebPackage, Cache
- import gettext
-
- #def utf8(str):
- # return unicode(str, 'latin1').encode('utf-8')
- def _(str):
- return unicode(gettext.gettext(str), 'UTF-8')
-
- def utf8(str):
- if isinstance(str, unicode):
- return str
- return unicode(str, 'UTF-8')
-
-
- class GDebiCommon(object):
- # cprogress may be different in child classes
- def __init__(self, datadir, options, file=""):
- self.cprogress = None
- self.deps = ""
- self.version_info_title = ""
- self.version_info_msg = ""
- self._deb = None
- self._options = options
- self.install = []
- self.remove = []
- self.unauthenticated = 0
-
- def openCache(self):
- self._cache = Cache(self.cprogress)
- if self._cache._depcache.BrokenCount > 0:
- self.error_header = _("Broken dependencies")
- self.error_body = _("Your system has broken dependencies. "
- "This application can not continue until "
- "this is fixed. "
- "To fix it run 'sudo synaptic' or "
- "'sudo apt-get install -f' "
- "in a terminal window.")
- return False
- return True
-
- def open(self, file):
- # open the package
- try:
- self._deb = DebPackage(self._cache, file)
- except (IOError,SystemError),e:
- self.error_header = _("Could not open '%s'" % os.path.basename(file))
- self.error_body = _("The package might be corrupted or you are not "
- "allowed to open the file. Check the permissions "
- "of the file.")
- return False
-
- def compareDebWithCache(self):
- # check if the package is available in the normal sources as well
- res = self._deb.compareToVersionInCache(useInstalled=False)
- if not self._options.non_interactive and res != DebPackage.NO_VERSION:
- pkg = self._cache[self._deb.pkgName]
-
- # FIXME: make this strs better, improve the dialog by
- # providing a option to install from repository directly
- # (when possible)
- if res == DebPackage.VERSION_SAME:
- if self._cache.downloadable(pkg,useCandidate=True):
- self.version_info_title = _("Same version is available in a software channel")
- self.version_info_msg = _("You are recommended to install the software "
- "from the channel instead.")
- elif res == DebPackage.VERSION_IS_NEWER:
- if self._cache.downloadable(pkg,useCandidate=True):
- self.version_info_title = _("An older version is available in a software channel")
- self.version_info_msg = _("Generally you are recommended to install "
- "the version from the software channel, since "
- "it is usually better supported.")
- elif res == DebPackage.VERSION_OUTDATED:
- if self._cache.downloadable(pkg,useCandidate=True):
- self.version_info_title = _("A later version is available in a software "
- "channel")
- self.version_info_msg = _("You are strongly advised to install "
- "the version from the software channel, since "
- "it is usually better supported.")
-
- def getChanges(self):
- (self.install, self.remove, self.unauthenticated) = self._deb.requiredChanges
- self.deps = ""
- if len(self.remove) == len(self.install) == 0:
- self.deps = _("All dependencies are satisfied")
- if len(self.remove) > 0:
- # FIXME: use ngettext here
- self.deps += _("Requires the <b>removal</b> of %s packages\n") % len(self.remove)
- if len(self.install) > 0:
- self.deps += _("Requires the installation of %s packages") % len(self.install)
- return True
-
- def try_acquire_lock(self):
- " check if we can lock the apt database "
- try:
- apt_pkg.PkgSystemLock()
- except SystemError:
- self.error_header = _("Only one software management tool is allowed to"
- " run at the same time")
- self.error_body = _("Please close the other application e.g. 'Update "
- "Manager', 'aptitude' or 'Synaptic' first.")
- return False
- apt_pkg.PkgSystemUnLock()
- return True
-
- def acquire_lock(self):
- " lock the pkgsystem for install "
- # sanity check ( moved here )
- if self._deb is None:
- return False
-
- # check if we can lock the apt database
- try:
- apt_pkg.PkgSystemLock()
- except SystemError:
- self.error_header = _("Only one software management tool is allowed to"
- " run at the same time")
- self.error_body = _("Please close the other application e.g. 'Update "
- "Manager', 'aptitude' or 'Synaptic' first.")
- return False
- return True
-
- def release_lock(self):
- " release the pkgsystem lock "
- apt_pkg.PkgSystemLock()
- return True
-
-