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# Copyright 2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$
from __future__ import print_function
__all__ = ["SETPREFIX", "get_boolean", "SetConfigError",
"SetConfig", "load_default_config"]
try:
from configparser import SafeConfigParser, NoOptionError
except ImportError:
from ConfigParser import SafeConfigParser, NoOptionError
from portage import os
from portage import load_mod
from portage.const import USER_CONFIG_PATH, GLOBAL_CONFIG_PATH
from portage.exception import PackageSetNotFound
from portage.localization import _
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()
self._parser.read(paths)
self.errors = []
self.psets = {}
self.trees = trees
self.settings = settings
self._parsed = False
self.active = []
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")
# 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 \
not parser.getboolean(sname, "world-candidate"):
newsets[x].world_candidate = False
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 \
not parser.getboolean(sname, "world-candidate"):
self.psets[setname].world_candidate = False
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()
parser = self._parser
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):
setconfigpaths = [os.path.join(GLOBAL_CONFIG_PATH, "sets.conf")]
setconfigpaths.append(os.path.join(settings["PORTDIR"], "sets.conf"))
setconfigpaths += [os.path.join(x, "sets.conf") for x in settings["PORTDIR_OVERLAY"].split()]
setconfigpaths.append(os.path.join(settings["PORTAGE_CONFIGROOT"],
USER_CONFIG_PATH, "sets.conf"))
return SetConfig(setconfigpaths, settings, trees)
# adhoc test code
if __name__ == "__main__":
import portage
sc = load_default_config(portage.settings, portage.db["/"])
l, e = sc.getSets()
for x in l:
print(x+":")
print("DESCRIPTION = %s" % l[x].getMetadata("Description"))
for n in sorted(l[x].getAtoms()):
print("- "+n)
print()
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