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portage.py
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/
portage.py
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#
# Copyright 2016 Free Software Foundation, Inc.
#
# This file is part of PyBOMBS
#
# PyBOMBS 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 3, or (at your option)
# any later version.
#
# PyBOMBS 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 PyBOMBS; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
"""
Packager: portage
"""
from pybombs.packagers.extern import ExternCmdPackagerBase, ExternPackager
from pybombs.utils import subproc
from pybombs.utils import sysutils
class ExternalPortage(ExternPackager):
"""
Wrapper for portage
"""
def __init__(self, logger):
ExternPackager.__init__(self, logger)
self.available = False
try:
from _emerge import search
from _emerge import actions
from _emerge.actions import load_emerge_config
self.portage = __import__('portage')
self.re = __import__('re')
emerge_config = load_emerge_config()
self.root_config = emerge_config.running_config
# search init args:
# (self,root_config,spinner,searchdesc,verbose,usepkg,usepkgconly,search_index=True)
self.search = search.search(self.root_config,False,False,False,True,False)
self.search._vardb.cp_all()
self.available = True
except ImportError :
self.available = False
def get_available_version(self, pkgname):
"""
Return a version that we can install through this package manager.
"""
try:
ver = None
pkg = []
self.search.searchre = self.re.compile(pkgname+"$", self.re.I)
for package in self.search._cp_all():
match_string = package[:]
if self.search.searchre.search(match_string):
pkg += [package]
full_package = []
for p in pkg:
# match-visible always returns a list
full_package.extend(self.search._xmatch('match-visible',p))
versions = []
for p in full_package:
versions += [self.portage.catpkgsplit(p, True)[2]]
if len(versions) > 1:
ver_string = ", ".join(versions)
self.log.debug("Package {0} has ".format(pkgname)+"versions "+ver_string.format(*versions)+" in portage")
ver = versions[-1]
elif len(versions) == 1:
self.log.debug("Package {0} has version {1} in portage".format(pkgname, ver))
ver = versions[0]
else:
self.log.debug("Package {0} is not available in portage".format(pkgname))
return ver
except Exception as ex:
self.log.error("Error: {0}".format(ex))
return False
def get_installed_version(self, pkgname):
"""
Return the currently installed version. If pkgname is not installed,
return None.
"""
try:
installed_package = self.search._vardb.match(pkgname)
if installed_package:
try:
self._vardb.match_unordered
except AttributeError:
installed_package = installed_package[-1]
else:
installed_package = self.portage.best(installed_package)
else:
installed_package = ""
if installed_package:
ver = self.portage.catpkgsplit(installed_package,True)[2]
self.log.debug("Package {0} has version {1}".format(pkgname, ver))
else:
ver = None
return ver
except Exception as ex:
self.log.error("Error: '{0}'".format(ex))
self.log.trace(str(ex))
return False
def install(self, pkgname):
"""
emerge =pkgname-ver
"""
ver = self.get_available_version(pkgname)
return self._run_cmd('='+pkgname+'-'+ver, '')
def update(self, pkgname):
"""
emerge --update =pkgname-ver
"""
ver = self.get_available_version(pkgname)
return self._run_cmd('='+pkgname+'-'+ver,'--update')
def _run_cmd(self, pkgname, cmd):
try:
if cmd:
subproc.monitor_process(["emerge","--quiet-build","y","--ask","n",cmd,pkgname], elevate=True )
else:
subproc.monitor_process(["emerge","--quiet-build","y","--ask","n",pkgname], elevate=True )
return True
except Exception as e:
self.log.error("Running `emerge {0}` failed.".format(cmd))
self.log.trace(str(e))
return False
class Portage(ExternCmdPackagerBase):
"""
portage install xyz
"""
name = 'portage'
pkgtype = 'portage'
def __init__(self):
ExternCmdPackagerBase.__init__(self)
self.packager = ExternalPortage(self.log)
def supported(self):
"""
Check if we have portage python bindings.
Return True if so.
"""
return self.packager.available