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# Copyright 2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$
import errno
import os
from portage.util import grabfile, write_atomic, ensure_dirs
from portage.const import PRIVATE_PATH
from portage.locks import lockfile, unlockfile
from portage import portage_gid
from portage.sets import PackageSet, EditablePackageSet
from portage.env.loaders import ItemFileLoader, KeyListFileLoader
from portage.env.validators import ValidAtomValidator
class StaticFileSet(EditablePackageSet):
_operations = ["merge", "unmerge"]
def __init__(self, filename):
super(StaticFileSet, self).__init__()
self._filename = filename
self._mtime = None
self.description = "Package set loaded from file %s" % self._filename
self.loader = ItemFileLoader(self._filename, ValidAtomValidator)
metadata = grabfile(self._filename + ".metadata")
key = None
value = []
for line in metadata:
line = line.strip()
if len(line) == 0 and key != None:
setattr(self, key, " ".join(value))
key = None
elif line[-1] == ":" and key == None:
key = line[:-1].lower()
value = []
elif key != None:
value.append(line)
else:
pass
else:
if key != None:
setattr(self, key, " ".join(value))
def write(self):
write_atomic(self._filename, "\n".join(sorted(self._atoms))+"\n")
def load(self):
try:
mtime = os.stat(self._filename).st_mtime
except (OSError, IOError):
mtime = None
if (not self._loaded or self._mtime != mtime):
try:
data, errors = self.loader.load()
except EnvironmentError, e:
if e.errno != errno.ENOENT:
raise
del e
data = {}
self._setAtoms(data.keys())
self._mtime = mtime
class ConfigFileSet(PackageSet):
def __init__(self, filename):
super(ConfigFileSet, self).__init__()
self._filename = filename
self.description = "Package set generated from %s" % self._filename
self.loader = KeyListFileLoader(self._filename, ValidAtomValidator)
def load(self):
data, errors = self.loader.load()
self._setAtoms(data.keys())
class WorldSet(StaticFileSet):
description = "Set of packages that were directly installed by the user"
def __init__(self, root):
super(WorldSet, self).__init__(os.path.join(os.sep, root, PRIVATE_PATH, "world"))
self._lock = None
def _ensure_dirs(self):
ensure_dirs(os.path.dirname(self._filename), gid=portage_gid, mode=02750, mask=02)
def lock(self):
self._ensure_dirs()
self._lock = lockfile(self._filename, wantnewlockfile=1)
def unlock(self):
unlockfile(self._lock)
self._lock = None
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