Filename: ///usr//share/apt-listchanges///ALCApt.py

# vim:set fileencoding=utf-8 et ts=4 sts=4 sw=4: # # apt-listchanges - Show changelog entries between the installed versions # of a set of packages and the versions contained in # corresponding .deb files # # Copyright (C) 2000-2006 Matt Zimmerman <mdz@debian.org> # Copyright (C) 2006 Pierre Habouzit <madcoder@debian.org> # Copyright (C) 2016 Robert Luberda <robert@debian.org> # # 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. # import os import ALCLog from ALChacks import _ def _parse_apt_bool(value): # Based on StringToBool() from apt-pkg/contrib/strutl.cc in apt source # and should return same result as StringToBool(value, false) return value.lower() in [ '1', 'yes', 'true', 'with', 'on', 'enable' ] def _parse_apt_int(value): # This function should match Configuration::FindI() from apt's # apt-pkg/contrib/configuration.cc, except for values like '1something' try: return int(value) except Exception: return 0 class AptPipelineError(Exception): pass class AptPipeline(object): def __init__(self, config): super().__init__() self._config = config def read(self): if self._config.debug: ALCLog.debug(_("APT pipeline messages:")) with self._open_apt_fd() as fd: self._read_version(fd) self._read_options(fd) debs = self._read_packages(fd) if self._config.debug: ALCLog.debug(_("Packages list:")) for d in debs: ALCLog.debug("\t%s" % d) ALCLog.debug("") return debs def _open_apt_fd(self): if 'APT_HOOK_INFO_FD' not in os.environ: raise AptPipelineError(_("APT_HOOK_INFO_FD environment variable is not defined\n" "(is Dpkg::Tools::Options::/usr/bin/apt-listchanges::InfoFD set to 20?)")) try: apt_hook_info_fd_val = int(os.environ['APT_HOOK_INFO_FD']) except Exception as ex: raise AptPipelineError(_("Invalid (non-numeric) value of APT_HOOK_INFO_FD" " environment variable")) from ex if self._config.debug: ALCLog.debug(_("Will read apt pipeline messages from file descriptor %d") % apt_hook_info_fd_val) if apt_hook_info_fd_val == 0: # TODO: remove this backward compatibility code in Debian 10 (Buster) ALCLog.warning(_("Incorrect value (0) of APT_HOOK_INFO_FD environment variable.\n" "If the warning persists after restart of the package manager (e.g. aptitude),\n" "please check if the /etc/apt/apt.conf.d/20listchanges file was properly updated.")) elif apt_hook_info_fd_val < 3: raise AptPipelineError(_("APT_HOOK_INFO_FD environment variable is incorrectly defined\n" "(Dpkg::Tools::Options::/usr/bin/apt-listchanges::InfoFD should be greater than 2).")) try: return os.fdopen(apt_hook_info_fd_val, 'rt') except Exception as ex: raise AptPipelineError(_("Cannot read from file descriptor %(fd)d: %(errmsg)s") % {'fd': apt_hook_info_fd_val, 'errmsg': str(ex) }) from ex def _read_version(self, fd): version = fd.readline().rstrip() if version != "VERSION 2": raise AptPipelineError(_("Wrong or missing VERSION from apt pipeline\n" "(is Dpkg::Tools::Options::/usr/bin/apt-listchanges::Version set to 2?)")) if self._config.debug: ALCLog.debug("\t%s" % version) def _read_options(self, fd): while True: line = fd.readline().rstrip() if self._config.debug: ALCLog.debug("\t%s" % line) if not line: return if (not self._config.ignore_apt_assume and line.startswith('APT::Get::Assume-Yes=') and _parse_apt_bool(line[len('APT::Get::Assume-Yes='):]) ): self._config.confirm = False # Set self._config.quiet as well to force non-interactive frontend self._config.quiet = max(1, self._config.quiet) elif line.startswith('quiet='): self._config.quiet = max(_parse_apt_int(line[len('quiet='):]), self._config.quiet) def _read_packages(self, fd): filenames = {} toconfig = [] toremove = [] hasupgrade = False for pkgline in fd.readlines(): pkgline = pkgline.rstrip() if self._config.debug: ALCLog.debug("\t%s" % pkgline) if not pkgline: break (pkgname, oldversion, compare, newversion, filename) = pkgline.split(None, 4) if compare != '<': # ignore downgrades or re-installations continue if filename == '**REMOVE**' or filename == '**ERROR**': toremove.append(pkgname) continue # New installs (oldversion equal to '-') are not ignored to support # a case when changelog is moved from one package to a dependent # package built from the same source (see p7zip-full 15.09+dfsg-3). if oldversion != '-': hasupgrade = True if filename == '**CONFIGURE**': toconfig.append(pkgname) else: filenames[pkgname] = filename # Quit early if no package has been upgraded (e.g. only new installs or removals) if not hasupgrade: return [] # Sort by configuration order. THIS IS IMPORTANT. Sometimes, a # situation exists where package X contains changelog.gz (upstream # changelog) and depends on package Y which contains # changelog.Debian.gz (Debian changelog). Until we have a more # reliable method for determining whether a package is Debian # native, this allows things to work, since Y will always be # configured first. # apt doesn't explicitly configure everything anymore, so sort # the things to be configured first, and then do everything else # in alphabetical order. Also, drop from the list everything # that's to be removed. for pkg in toremove: if pkg in filenames: del filenames[pkg] ordered_filenames = [] for pkg in toconfig: if pkg in filenames: ordered_filenames.append(filenames[pkg]) del filenames[pkg] ordered_filenames.extend(sorted(filenames.values())) return ordered_filenames

./Ninja\.