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# Copyright 2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$
import os
from portage.const import PRIVATE_PATH, USER_CONFIG_PATH
from portage.exception import InvalidAtom
from portage.dep import isvalidatom, match_from_list, best_match_to_list, dep_getkey, use_reduce, paren_reduce
from portage import flatten
OPERATIONS = ["merge", "unmerge"]
DEFAULT_SETS = ["world", "system", "everything", "security"] \
+["package_"+x for x in ["mask", "unmask", "use", "keywords"]]
class PackageSet(object):
# Set this to operations that are supported by your subclass. While
# technically there is no difference between "merge" and "unmerge" regarding
# package sets, the latter doesn't make sense for some sets like "system"
# or "security" and therefore isn't supported by them.
_operations = ["merge"]
_atommap = {}
description = "generic package set"
def __init__(self, name):
self.name = name
self._atoms = set()
self._atommap = {}
self._loaded = False
self._loading = False
def __contains__(self, atom):
return atom in self.getAtoms()
def __iter__(self):
for x in self.getAtoms():
yield x
def supportsOperation(self, op):
if not op in OPERATIONS:
raise ValueError(op)
return op in self._operations
def getAtoms(self):
if not self._loaded and not self._loading:
self._loading = True
self.load()
self._loaded = True
self._loading = False
return self._atoms
def _setAtoms(self, atoms):
atoms = map(str.strip, atoms)
for a in atoms[:]:
if a == "":
atoms.remove(a)
elif not isvalidatom(a):
raise InvalidAtom(a)
self._atoms = atoms
self._updateAtomMap()
def load(self):
# This method must be overwritten by subclasses
# Editable sets should use the value of self._mtime to determine if they
# need to reload themselves
raise NotImplementedError()
def containsCPV(self, cpv):
for a in self.getAtoms():
if match_from_list(a, [cpv]):
return True
return False
def getMetadata(self, key):
if hasattr(self, key.lower()):
return getattr(self, key.lower())
else:
return ""
def _updateAtomMap(self):
for a in self.getAtoms():
cp = dep_getkey(a)
self._atommap.setdefault(cp, set())
self._atommap[cp].add(a)
# Not sure if this one should really be in PackageSet
def findAtomForPackage(self, cpv, metadata):
"""Return the best match for a given package from the arguments, or
None if there are no matches. This matches virtual arguments against
the PROVIDE metadata. This can raise an InvalidDependString exception
if an error occurs while parsing PROVIDE."""
cpv_slot = "%s:%s" % (cpv, metadata["SLOT"])
cp = dep_getkey(cpv)
atoms = self._atommap.get(cp)
if atoms:
best_match = best_match_to_list(cpv_slot, atoms)
if best_match:
return best_match
if not metadata["PROVIDE"]:
return None
provides = flatten(use_reduce(paren_reduce(metadata["PROVIDE"]),
uselist=metadata["USE"].split()))
for provide in provides:
provided_cp = dep_getkey(provide)
atoms = self._atommap.get(provided_cp)
if atoms:
atoms = list(atoms)
transformed_atoms = [atom.replace(provided_cp, cp) for atom in atoms]
best_match = best_match_to_list(cpv_slot, transformed_atoms)
if best_match:
return atoms[transformed_atoms.index(best_match)]
return None
class EditablePackageSet(PackageSet):
def getAtoms(self):
self.load()
return self._atoms
def update(self, atoms):
self.load()
self._atoms.update(atoms)
self._updateAtomMap()
self.write()
def add(self, atom):
self.update([atom])
def replace(self, atoms):
self._setAtoms(atoms)
self.write()
def remove(self, atom):
self.load()
self._atoms.discard(atom)
self._updateAtomMap()
self.write()
def removePackageAtoms(self, cp):
self.load()
for a in self.getAtoms():
if dep_getkey(a) == cp:
self.remove(a)
self.write()
def write(self):
# This method must be overwritten in subclasses that should be editable
raise NotImplementedError()
class InternalPackageSet(EditablePackageSet):
def __init__(self, initial_atoms=None):
super(InternalPackageSet, self).__init__("")
if initial_atoms != None:
self.update(initial_atoms)
def clear(self):
self._atoms.clear()
self._updateAtomMap()
def load(self):
pass
def write(self):
pass
def make_default_sets(configroot, root, profile_paths, settings=None,
vdbapi=None, portdbapi=None):
from portage.sets.files import StaticFileSet, ConfigFileSet
from portage.sets.profiles import PackagesSystemSet
from portage.sets.security import NewAffectedSet
from portage.sets.dbapi import EverythingSet
rValue = set()
worldset = StaticFileSet("world", os.path.join(root, PRIVATE_PATH, "world"))
worldset.description = "Set of packages that were directly installed"
rValue.add(worldset)
for suffix in ["mask", "unmask", "keywords", "use"]:
myname = "package_"+suffix
myset = ConfigFileSet(myname, os.path.join(configroot, USER_CONFIG_PATH.lstrip(os.sep), "package."+suffix))
rValue.add(myset)
rValue.add(PackagesSystemSet("system", profile_paths))
if settings != None and portdbapi != None:
rValue.add(NewAffectedSet("security", settings, vdbapi, portdbapi))
else:
rValue.add(InternalPackageSet("security"))
if vdbapi != None:
rValue.add(EverythingSet("everything", vdbapi))
else:
rValue.add(InternalPackageSet("everything"))
return rValue
def make_extra_static_sets(configroot):
from portage.sets.files import StaticFileSet
rValue = set()
mydir = os.path.join(configroot, USER_CONFIG_PATH.lstrip(os.sep), "sets")
try:
mysets = os.listdir(mydir)
except (OSError, IOError):
return rValue
for myname in mysets:
if myname in DEFAULT_SETS:
continue
rValue.add(StaticFileSet(fname, os.path.join(mydir, myname)))
return rValue
def make_category_sets(portdbapi, settings, only_visible=True):
from portage.sets.dbapi import CategorySet
rValue = set()
for c in settings.categories:
rValue.add(CategorySet("category_%s" % c, c, portdbapi, only_visible=only_visible))
return rValue
# adhoc test code
if __name__ == "__main__":
import portage, sys, os
from portage.sets.dbapi import CategorySet
from portage.sets.files import StaticFileSet
l = make_default_sets("/", "/", portage.settings.profiles, portage.settings, portage.db["/"]["vartree"].dbapi, portage.db["/"]["porttree"].dbapi)
l.update(make_extra_static_sets("/"))
if len(sys.argv) > 1:
for s in sys.argv[1:]:
if s.startswith("category_"):
c = s[9:]
l.add(CategorySet("category_%s" % c, c, portdbapi, only_visible=only_visible))
elif os.path.exists(s):
l.add(StaticFileSet(os.path.basename(s), s))
elif s != "*":
print "ERROR: could not create set '%s'" % s
if not "*" in sys.argv:
l = [s for s in l if s.name in sys.argv[1:]]
for x in l:
print x.name+":"
print "DESCRIPTION = %s" % x.getMetadata("Description")
for n in sorted(x.getAtoms()):
print "- "+n
print
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