102 lines
3.8 KiB
Python
102 lines
3.8 KiB
Python
# DistUpgradeConfigParser.py
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#
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# Copyright (c) 2004-2014 Canonical
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#
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# Author: Michael Vogt <michael.vogt@ubuntu.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 2 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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# USA
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from configparser import NoOptionError, NoSectionError
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from configparser import ConfigParser as SafeConfigParser
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import subprocess
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import os.path
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import logging
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import glob
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CONFIG_OVERRIDE_DIR = "/etc/update-manager/release-upgrades.d"
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class DistUpgradeConfig(SafeConfigParser):
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def __init__(self, datadir, name="DistUpgrade.cfg",
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override_dir=None, defaults_dir=None):
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SafeConfigParser.__init__(self)
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# we support a config overwrite, if DistUpgrade.cfg.dapper exists
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# and the user runs dapper, that one will be used
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from_release = subprocess.Popen(
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["lsb_release", "-c", "-s"], stdout=subprocess.PIPE,
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universal_newlines=True).communicate()[0].strip()
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self.datadir = datadir
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maincfg = os.path.join(datadir, name)
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if os.path.exists(maincfg + "." + from_release):
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maincfg += "." + from_release
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# defaults are read first
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self.config_files = []
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if defaults_dir:
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for cfg in glob.glob(defaults_dir + "/*.cfg"):
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self.config_files.append(cfg)
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# our config file
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self.config_files += [maincfg]
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# overrides are read later
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if override_dir is None:
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override_dir = CONFIG_OVERRIDE_DIR
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if override_dir is not None:
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for cfg in glob.glob(override_dir + "/*.cfg"):
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self.config_files.append(cfg)
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self.read(self.config_files)
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def getWithDefault(self, section, option, default):
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try:
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if isinstance(default, bool):
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return self.getboolean(section, option)
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elif isinstance(default, float):
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return self.getfloat(section, option)
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elif isinstance(default, int):
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return self.getint(section, option)
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return self.get(section, option)
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except (NoSectionError, NoOptionError):
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return default
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def getlist(self, section, option):
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try:
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tmp = self.get(section, option)
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except (NoSectionError, NoOptionError):
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return []
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items = [x.strip() for x in tmp.split(",")]
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return items
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def getListFromFile(self, section, option):
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try:
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filename = self.get(section, option)
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except NoOptionError:
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return []
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p = os.path.join(self.datadir, filename)
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if not os.path.exists(p):
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logging.error("getListFromFile: no '%s' found" % p)
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with open(p) as f:
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items = [x.strip() for x in f]
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return [s for s in items if not s.startswith("#") and not s == ""]
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if __name__ == "__main__":
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c = DistUpgradeConfig(".")
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print(c.getlist("Distro", "MetaPkgs"))
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print(c.getlist("Distro", "ForcedPurges"))
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print(c.getListFromFile("Sources", "ValidMirrors"))
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print(c.getWithDefault("Distro", "EnableApport", True))
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print(c.set("Distro", "Foo", "False"))
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print(c.getWithDefault("Distro", "Foo", True))
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