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# Copyright 2005-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
import portage
from portage import os
class WorldHandler(object):
short_desc = "Fix problems in the world file"
def name():
return "world"
name = staticmethod(name)
def __init__(self):
self.invalid = []
self.not_installed = []
self.okay = []
from portage._sets import load_default_config
setconfig = load_default_config(portage.settings,
portage.db[portage.settings['EROOT']])
self._sets = setconfig.getSets()
def _check_world(self, onProgress):
eroot = portage.settings['EROOT']
self.world_file = os.path.join(eroot, portage.const.WORLD_FILE)
self.found = os.access(self.world_file, os.R_OK)
vardb = portage.db[eroot]["vartree"].dbapi
from portage._sets import SETPREFIX
sets = self._sets
world_atoms = list(sets["selected"])
maxval = len(world_atoms)
if onProgress:
onProgress(maxval, 0)
for i, atom in enumerate(world_atoms):
if not isinstance(atom, portage.dep.Atom):
if atom.startswith(SETPREFIX):
s = atom[len(SETPREFIX):]
if s in sets:
self.okay.append(atom)
else:
self.not_installed.append(atom)
else:
self.invalid.append(atom)
if onProgress:
onProgress(maxval, i+1)
continue
okay = True
if not vardb.match(atom):
self.not_installed.append(atom)
okay = False
if okay:
self.okay.append(atom)
if onProgress:
onProgress(maxval, i+1)
def check(self, **kwargs):
onProgress = kwargs.get('onProgress', None)
self._check_world(onProgress)
errors = []
if self.found:
errors += ["'%s' is not a valid atom" % x for x in self.invalid]
errors += ["'%s' is not installed" % x for x in self.not_installed]
else:
errors.append(self.world_file + " could not be opened for reading")
return errors
def fix(self, **kwargs):
onProgress = kwargs.get('onProgress', None)
world_set = self._sets["selected"]
world_set.lock()
try:
world_set.load() # maybe it's changed on disk
before = set(world_set)
self._check_world(onProgress)
after = set(self.okay)
errors = []
if before != after:
try:
world_set.replace(self.okay)
except portage.exception.PortageException:
errors.append("%s could not be opened for writing" % \
self.world_file)
return errors
finally:
world_set.unlock()
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