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# -*- coding: utf-8 -*-
#
# File: portato/db/dict.py
# This file is part of the Portato-Project, a graphical portage-frontend.
#
# Copyright (C) 2009 René 'Necoro' Neumann
# This is free software. You may redistribute copies of it under the terms of
# the GNU General Public License version 2.
# There is NO WARRANTY, to the extent permitted by law.
#
# Written by René 'Necoro' Neumann <necoro@necoro.net>
from __future__ import absolute_import, with_statement
import re
from collections import defaultdict
from threading import RLock
from ..backend import system
from .database import Database, PkgData
class DictDatabase (Database):
"""An internal database which holds a simple dictionary cat -> [package_list]."""
lock = Database.lock
def __init__ (self, session):
"""Constructor."""
Database.__init__(self)
self.session = session
self.__initialize()
self.populate()
def __initialize (self):
self._db = defaultdict(list)
self.inst_cats = set([self.ALL])
self._restrict = None
def __sort_key (self, x):
return x.pkg.lower()
@lock
def populate (self, category = None):
# get the lists
packages = system.find_packages(category, with_version = False)
installed = system.find_packages(category, system.SET_INSTALLED, with_version = False)
# cycle through packages
for p in packages:
cat, pkg = p.split("/")
inst = p in installed
t = PkgData(cat, pkg, inst, False)
self._db[cat].append(t)
self._db[self.ALL].append(t)
if inst:
self.inst_cats.add(cat)
for key in self._db: # sort alphabetically
self._db[key].sort(key = self.__sort_key)
@lock
def get_cat (self, cat = None, byName = True, showDisabled = False):
if not cat:
cat = self.ALL
def get_pkgs():
if byName:
for pkg in self._db[cat]:
if showDisabled or not pkg.disabled:
yield pkg
else:
ninst = []
for pkg in self._db[cat]:
if not showDisabled and pkg.disabled: continue
if pkg.inst:
yield pkg
else:
ninst.append(pkg)
for pkg in ninst:
yield pkg
try:
if self.restrict:
return (pkg for pkg in get_pkgs() if self.restrict.search(pkg.pkg))#if pkg[1].find(self.restrict) != -1)
else:
return get_pkgs()
except KeyError: # cat is in category list - but not in portage
info(_("Catched KeyError => %s seems not to be an available category. Have you played with rsync-excludes?"), cat)
@lock
def get_categories (self, installed = False):
if not self.restrict:
if installed:
cats = self.inst_cats
else:
cats = self._db.iterkeys()
else:
if installed:
cats = set((pkg.cat for pkg in self.get_cat(self.ALL) if pkg.inst))
else:
cats = set((pkg.cat for pkg in self.get_cat(self.ALL)))
if len(cats)>1:
cats.add(self.ALL)
return (cat for cat in cats)
@lock
def reload (self, cat = None):
if cat:
del self._db[cat]
try:
self.inst_cats.remove(cat)
except KeyError: # not in inst_cats - can be ignored
pass
self._db[self.ALL] = filter(lambda x: x.cat != cat, self._db[self.ALL])
self.populate(cat+"/*")
else:
self.__initialize()
self.populate()
@lock
def disable (self, cpv):
cat, pkg = cpv.split("/")
c = self._db[cat]
p = c[c.index(PkgData(cat, pkg))]
p.disabled = True
def get_restrict (self):
return self._restrict
@lock
def set_restrict (self, restrict):
if not restrict:
self._restrict = None
else:
try:
regex = re.compile(restrict, re.I)
except re.error, e:
info(_("Error while compiling search expression: '%s'."), str(e))
else: # only set self._restrict if no error occurred
self._restrict = regex
restrict = property(get_restrict, set_restrict)
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