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-rw-r--r--portato/db/database.py99
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diff --git a/portato/db/database.py b/portato/db/database.py
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+# -*- coding: utf-8 -*-
+#
+# File: portato/db/database.py
+# This file is part of the Portato-Project, a graphical portage-frontend.
+#
+# Copyright (C) 2006-2009 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
+
+from threading import RLock
+from functools import wraps
+
+class PkgData (object):
+ __slots__ = ("cat", "pkg", "inst", "disabled")
+
+ def __init__ (self, cat, pkg, inst = False, disabled = False):
+ self.cat = cat
+ self.pkg = pkg
+ self.inst = inst
+ self.disabled = disabled
+
+ def __iter__ (self):
+ return iter((self.cat, self.pkg, self.inst, self.disabled))
+
+ def __cmp__ (self, other):
+ return cmp(self.pkg.lower(), other.pkg.lower())
+
+ def __repr__ (self):
+ return "<Package (%(cat)s, %(pkg)s, %(inst)s)>" % {"cat" : self.cat, "pkg" : self.pkg, "inst" : self.inst}
+
+class Database (object):
+
+ ALL = _("ALL")
+
+ def __init__ (self):
+ self._lock = RLock()
+
+ @staticmethod
+ def lock (f):
+ @wraps(f)
+ def wrapper (self, *args, **kwargs):
+ with self._lock:
+ r = f(self, *args, **kwargs)
+
+ return r
+
+ return wrapper
+
+ def populate (self, category = None):
+ """Populates the database.
+
+ @param category: An optional category - so only packages of this category are inserted.
+ @type category: string
+ """
+ raise NotImplentedError
+
+ def get_cat (self, cat = None, byName = True, showDisabled = False):
+ """Returns the packages in the category.
+
+ @param cat: category to return the packages from; if None it defaults to C{ALL}
+ @type cat: string
+ @param byName: selects whether to return the list sorted by name or by installation
+ @type byName: boolean
+ @param showDisabled: should disabled packages be returned
+ @type showDisabled: boolean
+ @return: an iterator over the packages
+ @rtype: L{PkgData}<iterator>
+ """
+ raise NotImplentedError
+
+ def get_categories (self, installed = False):
+ """Returns all categories.
+
+ @param installed: Only return these with at least one installed package.
+ @type installed: boolean
+ @returns: the list of categories
+ @rtype: string<iterator>
+ """
+ raise NotImplentedError
+
+ def disable (self, cpv):
+ """Marks the CPV as disabled.
+
+ @param cpv: the cpv to mark
+ """
+ raise NotImplentedError
+
+ def reload (self, cat = None):
+ """Reloads the given category.
+
+ @param cat: category
+ @type cat: string
+ """
+ raise NotImplentedError