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# Copyright 2007-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
from __future__ import print_function
__all__ = ["SETPREFIX", "get_boolean", "SetConfigError",
"SetConfig", "load_default_config"]
import io
import logging
import sys
try:
from configparser import NoOptionError, ParsingError
if sys.hexversion >= 0x3020000:
from configparser import ConfigParser as SafeConfigParser
else:
from configparser import SafeConfigParser
except ImportError:
from ConfigParser import SafeConfigParser, NoOptionError, ParsingError
from portage import os
from portage import load_mod
from portage import _unicode_decode
from portage import _unicode_encode
from portage import _encodings
from portage.const import USER_CONFIG_PATH, GLOBAL_CONFIG_PATH
from portage.const import _ENABLE_SET_CONFIG
from portage.exception import PackageSetNotFound
from portage.localization import _
from portage.util import writemsg_level
SETPREFIX = "@"
def get_boolean(options, name, default):
if not name in options:
return default
elif options[name].lower() in ("1", "yes", "on", "true"):
return True
elif options[name].lower() in ("0", "no", "off", "false"):
return False
else:
raise SetConfigError(_("invalid value '%(value)s' for option '%(option)s'") % {"value": options[name], "option": name})
class SetConfigError(Exception):
pass
class SetConfig(object):
def __init__(self, paths, settings, trees):
self._parser = SafeConfigParser(
defaults={
"EPREFIX" : settings["EPREFIX"],
"EROOT" : settings["EROOT"],
"PORTAGE_CONFIGROOT" : settings["PORTAGE_CONFIGROOT"],
"ROOT" : settings["ROOT"],
})
if _ENABLE_SET_CONFIG:
# use read_file/readfp in order to control decoding of unicode
try:
# Python >=3.2
read_file = self._parser.read_file
except AttributeError:
read_file = self._parser.readfp
for p in paths:
f = None
try:
f = io.open(_unicode_encode(p,
encoding=_encodings['fs'], errors='strict'),
mode='r', encoding=_encodings['repo.content'],
errors='replace')
except EnvironmentError:
pass
else:
try:
read_file(f)
except ParsingError as e:
writemsg_level(_unicode_decode(
_("!!! Error while reading sets config file: %s\n")
) % e, level=logging.ERROR, noiselevel=-1)
finally:
if f is not None:
f.close()
else:
self._create_default_config()
self.errors = []
self.psets = {}
self.trees = trees
self.settings = settings
self._parsed = False
self.active = []
def _create_default_config(self):
"""
Create a default hardcoded set configuration for a portage version
that does not support set configuration files. This is only used
in the current branch of portage if _ENABLE_SET_CONFIG is False.
Even if it's not used in this branch, keep it here in order to
minimize the diff between branches.
[world]
class = portage.sets.base.DummyPackageSet
packages = @selected @system
[selected]
class = portage.sets.files.WorldSelectedSet
[system]
class = portage.sets.profiles.PackagesSystemSet
"""
parser = self._parser
parser.remove_section("world")
parser.add_section("world")
parser.set("world", "class", "portage.sets.base.DummyPackageSet")
parser.set("world", "packages", "@selected @system")
parser.remove_section("selected")
parser.add_section("selected")
parser.set("selected", "class", "portage.sets.files.WorldSelectedSet")
parser.remove_section("system")
parser.add_section("system")
parser.set("system", "class", "portage.sets.profiles.PackagesSystemSet")
parser.remove_section("usersets")
parser.add_section("usersets")
parser.set("usersets", "class", "portage.sets.files.StaticFileSet")
parser.set("usersets", "multiset", "true")
parser.set("usersets", "directory", "%(PORTAGE_CONFIGROOT)setc/portage/sets")
parser.set("usersets", "world-candidate", "true")
def update(self, setname, options):
parser = self._parser
self.errors = []
if not setname in self.psets:
options["name"] = setname
options["world-candidate"] = "False"
# for the unlikely case that there is already a section with the requested setname
import random
while setname in parser.sections():
setname = "%08d" % random.randint(0, 10**10)
parser.add_section(setname)
for k, v in options.items():
parser.set(setname, k, v)
else:
section = self.psets[setname].creator
if parser.has_option(section, "multiset") and \
parser.getboolean(section, "multiset"):
self.errors.append(_("Invalid request to reconfigure set '%(set)s' generated "
"by multiset section '%(section)s'") % {"set": setname, "section": section})
return
for k, v in options.items():
parser.set(section, k, v)
self._parse(update=True)
def _parse(self, update=False):
if self._parsed and not update:
return
parser = self._parser
for sname in parser.sections():
# find classname for current section, default to file based sets
if not parser.has_option(sname, "class"):
classname = "portage._sets.files.StaticFileSet"
else:
classname = parser.get(sname, "class")
if classname.startswith('portage.sets.'):
# The module has been made private, but we still support
# the previous namespace for sets.conf entries.
classname = classname.replace('sets', '_sets', 1)
# try to import the specified class
try:
setclass = load_mod(classname)
except (ImportError, AttributeError):
try:
setclass = load_mod("portage._sets." + classname)
except (ImportError, AttributeError):
self.errors.append(_("Could not import '%(class)s' for section "
"'%(section)s'") % {"class": classname, "section": sname})
continue
# prepare option dict for the current section
optdict = {}
for oname in parser.options(sname):
optdict[oname] = parser.get(sname, oname)
# create single or multiple instances of the given class depending on configuration
if parser.has_option(sname, "multiset") and \
parser.getboolean(sname, "multiset"):
if hasattr(setclass, "multiBuilder"):
newsets = {}
try:
newsets = setclass.multiBuilder(optdict, self.settings, self.trees)
except SetConfigError as e:
self.errors.append(_("Configuration error in section '%s': %s") % (sname, str(e)))
continue
for x in newsets:
if x in self.psets and not update:
self.errors.append(_("Redefinition of set '%s' (sections: '%s', '%s')") % (x, self.psets[x].creator, sname))
newsets[x].creator = sname
if parser.has_option(sname, "world-candidate") and \
parser.getboolean(sname, "world-candidate"):
newsets[x].world_candidate = True
self.psets.update(newsets)
else:
self.errors.append(_("Section '%(section)s' is configured as multiset, but '%(class)s' "
"doesn't support that configuration") % {"section": sname, "class": classname})
continue
else:
try:
setname = parser.get(sname, "name")
except NoOptionError:
setname = sname
if setname in self.psets and not update:
self.errors.append(_("Redefinition of set '%s' (sections: '%s', '%s')") % (setname, self.psets[setname].creator, sname))
if hasattr(setclass, "singleBuilder"):
try:
self.psets[setname] = setclass.singleBuilder(optdict, self.settings, self.trees)
self.psets[setname].creator = sname
if parser.has_option(sname, "world-candidate") and \
parser.getboolean(sname, "world-candidate"):
self.psets[setname].world_candidate = True
except SetConfigError as e:
self.errors.append(_("Configuration error in section '%s': %s") % (sname, str(e)))
continue
else:
self.errors.append(_("'%(class)s' does not support individual set creation, section '%(section)s' "
"must be configured as multiset") % {"class": classname, "section": sname})
continue
self._parsed = True
def getSets(self):
self._parse()
return self.psets.copy()
def getSetAtoms(self, setname, ignorelist=None):
"""
This raises PackageSetNotFound if the give setname does not exist.
"""
self._parse()
try:
myset = self.psets[setname]
except KeyError:
raise PackageSetNotFound(setname)
myatoms = myset.getAtoms()
if ignorelist is None:
ignorelist = set()
ignorelist.add(setname)
for n in myset.getNonAtoms():
if n.startswith(SETPREFIX):
s = n[len(SETPREFIX):]
if s in self.psets:
if s not in ignorelist:
myatoms.update(self.getSetAtoms(s,
ignorelist=ignorelist))
else:
raise PackageSetNotFound(s)
return myatoms
def load_default_config(settings, trees):
if not _ENABLE_SET_CONFIG:
return SetConfig(None, settings, trees)
global_config_path = GLOBAL_CONFIG_PATH
if settings['EPREFIX']:
global_config_path = os.path.join(settings['EPREFIX'],
GLOBAL_CONFIG_PATH.lstrip(os.sep))
def _getfiles():
for path, dirs, files in os.walk(os.path.join(global_config_path, "sets")):
for f in files:
if not f.startswith(b'.'):
yield os.path.join(path, f)
dbapi = trees["porttree"].dbapi
for repo in dbapi.getRepositories():
path = dbapi.getRepositoryPath(repo)
yield os.path.join(path, "sets.conf")
yield os.path.join(settings["PORTAGE_CONFIGROOT"],
USER_CONFIG_PATH, "sets.conf")
return SetConfig(_getfiles(), settings, trees)
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