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#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
LAYMAN CONFIGURATION
File: config.py
Handles Basic layman configuration
Copyright:
(c) 2005 - 2009 Gunnar Wrobel
(c) 2009 Sebastian Pipping
(c) 2010 - 2011 Brian Dolbec
Distributed under the terms of the GNU General Public License v2
Author(s):
Gunnar Wrobel <wrobel@gentoo.org>
Sebastian Pipping <sebastian@pipping.org>
Brian Dolbec <brian.dolbec@gmail.com>
"""
'''Defines the configuration options.'''
__version__ = "0.2"
import sys
import os
import ConfigParser
from layman.output import Message
def read_layman_config(config=None, defaults=None):
"""reads the config file defined in defaults['config']
and updates the config
@param config: ConfigParser.ConfigParser(self.defaults) instance
@param defaults: dict
@modifies config['MAIN']['overlays']
"""
config.read(defaults['config'])
if config.get('MAIN', 'overlay_defs'):
try:
filelist = os.listdir(config.get('MAIN', 'overlay_defs'))
except OSError:
return
filelist = [f for f in filelist if f.endswith('.xml')]
overlays = set(config.get('MAIN', 'overlays').split('\n'))
for _file in filelist:
path = os.path.join(config.get('MAIN', 'overlay_defs'), _file)
if os.path.isfile(path):
overlays.update(["file://" + path])
config.set('MAIN', 'overlays', '\n'.join(overlays))
# establish the eprefix, initially set so eprefixify can
# set it on install
EPREFIX = "@GENTOO_PORTAGE_EPREFIX@"
# check and set it if it wasn't
if "GENTOO_PORTAGE_EPREFIX" in EPREFIX:
EPREFIX = ''
class BareConfig(object):
'''Handles the configuration only.'''
def __init__(self, output=None, stdout=None, stdin=None, stderr=None,
config=None, read_configfile=False, quiet=False, quietness=4,
verbose=False, nocolor=False, width=0
):
'''
Creates a bare config with defaults and a few output options.
>>> a = BareConfig()
>>> a['overlays']
'http://www.gentoo.org/proj/en/overlays/repositories.xml'
>>> sorted(a.keys())
['bzr_addopts', 'bzr_command', 'bzr_postsync', 'bzr_syncopts', 'cache', 'config', 'configdir', 'cvs_addopts', 'cvs_command', 'cvs_postsync', 'cvs_syncopts', 'darcs_addopts', 'darcs_command', 'darcs_postsync', 'darcs_syncopts', 'g-common_command', 'g-common_generateopts', 'g-common_postsync', 'g-common_syncopts', 'git_addopts', 'git_command', 'git_postsync', 'git_syncopts', 'installed', 'local_list', 'make_conf', 'mercurial_addopts', 'mercurial_command', 'mercurial_postsync', 'mercurial_syncopts', 'nocheck', 'nocolor', 'output', 'overlay_defs', 'overlays', 'proxy', 'quiet', 'quietness', 'rsync_command', 'rsync_postsync', 'rsync_syncopts', 'stderr', 'stdin', 'stdout', 'storage', 'svn_addopts', 'svn_command', 'svn_postsync', 'svn_syncopts', 't/f_options', 'tar_command', 'tar_postsync', 'umask', 'verbose', 'width']
>>> a.get_option('nocheck')
True
'''
self._defaults = {
'configdir': EPREFIX + '/etc/layman',
'config' : '%(configdir)s/layman.cfg',
'storage' : EPREFIX + '/var/lib/layman',
'cache' : '%(storage)s/cache',
'local_list': '%(storage)s/overlays.xml',
'installed': '%(storage)s/installed.xml',
'make_conf' : '%(storage)s/make.conf',
'nocheck' : 'yes',
'proxy' : '',
'umask' : '0022',
'news_reporter': 'portage',
'custom_news_pkg': '',
'overlays' :
'http://www.gentoo.org/proj/en/overlays/repositories.xml',
'overlay_defs': '%(configdir)s/overlays',
'bzr_command': EPREFIX +'/usr/bin/bzr',
'cvs_command': EPREFIX +'/usr/bin/cvs',
'darcs_command': EPREFIX +'/usr/bin/darcs',
'git_command': EPREFIX +'/usr/bin/git',
'g-common_command': EPREFIX +'/usr/bin/g-common',
'mercurial_command': EPREFIX +'/usr/bin/hg',
'rsync_command': EPREFIX +'/usr/bin/rsync',
'svn_command': EPREFIX +'/usr/bin/svn',
'tar_command': EPREFIX +'/bin/tar',
't/f_options': ['nocheck'],
'bzr_addopts' : '',
'bzr_syncopts' : '',
'cvs_addopts' : '',
'cvs_syncopts' : '',
'darcs_addopts' : '',
'darcs_syncopts' : '',
'git_addopts' : '',
'git_syncopts' : '',
'mercurial_addopts' : '',
'mercurial_syncopts' : '',
'rsync_syncopts' : '',
'svn_addopts' : '',
'svn_syncopts' : '',
'g-common_generateopts' : '',
'g-common_syncopts' : '',
'bzr_postsync' : '',
'cvs_postsync' : '',
'darcs_postsync' : '',
'git_postsync' : '',
'mercurial_postsync' : '',
'rsync_postsync' : '',
'svn_postsync' : '',
'tar_postsync' : '',
'g-common_postsync' : '',
}
self._options = {
'config': config if config else self._defaults['config'],
'stdout': stdout if stdout else sys.stdout,
'stdin': stdin if stdin else sys.stdin,
'stderr': stderr if stderr else sys.stderr,
'output': output if output else Message(),
'quietness': quietness,
'nocolor': nocolor,
'width': width,
'verbose': verbose,
'quiet': quiet,
'custom_news_func': None,
}
self._set_quietness(quietness)
self.config = None
if read_configfile:
defaults = self.get_defaults()
if "%(configdir)s" in defaults['config']:
# fix the config path
defaults['config'] = defaults['config'] \
% {'configdir': defaults['configdir']}
self.read_config(defaults)
def read_config(self, defaults):
self.config = ConfigParser.ConfigParser(defaults)
self.config.add_section('MAIN')
read_layman_config(self.config, defaults)
def keys(self):
'''Special handler for the configuration keys.
'''
self._options['output'].debug(
'Retrieving %s options' % self.__class__.__name__, 9)
keys = [i for i in self._options]
self._options['output'].debug(
'Retrieving %s defaults' % self.__class__.__name__, 9)
keys += [i for i in self._defaults
if not i in keys]
self._options['output'].debug(
'Retrieving %s done...' % self.__class__.__name__, 9)
return keys
def get_defaults(self):
"""returns our defaults dictionary"""
_defaults = self._defaults.copy()
_defaults['config'] = self._options['config']
return _defaults
def get_option(self, key):
"""returns the current option's value"""
return self._get_(key)
def set_option(self, option, value):
"""Sets an option to the value """
self._options[option] = value
# handle quietness
if option == 'quiet':
if self._options['quiet']:
self._set_quietness(1)
self._options['quietness'] = 1
else:
self._set_quietness(4)
if option == 'quietness':
self._set_quietness(value)
def _set_quietness(self, value):
self._options['output'].set_info_level(value)
self._options['output'].set_warn_level(value)
def __getitem__(self, key):
return self._get_(key)
def _get_(self, key):
self._options['output'].debug(
'Retrieving %s option: %s' % (self.__class__.__name__, key), 9)
if key == 'overlays':
overlays = ''
if (key in self._options
and not self._options[key] is None):
overlays = '\n'.join(self._options[key])
if self.config and self.config.has_option('MAIN', 'overlays'):
overlays += '\n' + self.config.get('MAIN', 'overlays')
if overlays:
return overlays
if (key in self._options
and not self._options[key] is None):
return self._options[key]
if self.config and self.config.has_option('MAIN', key):
if key in self._defaults['t/f_options']:
return self.t_f_check(self.config.get('MAIN', key))
return self.config.get('MAIN', key)
self._options['output'].debug('Retrieving BareConfig default', 9)
if key in self._defaults['t/f_options']:
return self.t_f_check(self._defaults[key])
if key in self._defaults:
if '%(storage)s' in self._defaults[key]:
return self._defaults[key] %{'storage': self._defaults['storage']}
return self._defaults[key]
return None
@staticmethod
def t_f_check(option):
"""evaluates the option and returns
True or False
"""
return option.lower() in ['yes', 'true', 'y', 't']
class OptionConfig(BareConfig):
"""This subclasses BareCongig adding functions to make overriding
or resetting defaults and/or setting options much easier
by using dictionaries.
"""
def __init__(self, options=None, defaults=None):
"""
@param options: dictionary of {'option': value, ...}
@rtype OptionConfig class instance.
>>> options = {"overlays": ["http://www.gentoo-overlays.org/repositories.xml"]}
>>> new_defaults = {"configdir": "/etc/test-dir"}
>>> a = OptionConfig(options=options, defaults=new_defaults)
>>> a['overlays']
'http://www.gentoo-overlays.org/repositories.xml'
>>> a["configdir"]
'/etc/test-dir'
>>> sorted(a.keys())
['bzr_addopts', 'bzr_command', 'bzr_postsync', 'bzr_syncopts', 'cache', 'config', 'configdir', 'cvs_addopts', 'cvs_command', 'cvs_postsync', 'cvs_syncopts', 'darcs_addopts', 'darcs_command', 'darcs_postsync', 'darcs_syncopts', 'g-common_command', 'g-common_generateopts', 'g-common_postsync', 'g-common_syncopts', 'git_addopts', 'git_command', 'git_postsync', 'git_syncopts', 'installed', 'local_list', 'make_conf', 'mercurial_addopts', 'mercurial_command', 'mercurial_postsync', 'mercurial_syncopts', 'nocheck', 'nocolor', 'output', 'overlay_defs', 'overlays', 'proxy', 'quiet', 'quietness', 'rsync_command', 'rsync_postsync', 'rsync_syncopts', 'stderr', 'stdin', 'stdout', 'storage', 'svn_addopts', 'svn_command', 'svn_postsync', 'svn_syncopts', 't/f_options', 'tar_command', 'tar_postsync', 'umask', 'verbose', 'width']
"""
BareConfig.__init__(self)
self.update_defaults(defaults)
self.update(options)
return
def update(self, options):
"""update the options with new values passed in via options
@param options
"""
if options is not None:
keys = sorted(options)
if 'quiet' in keys:
self.set_option('quiet', options['quiet'])
options.pop('quiet')
if 'quietness' in keys and not options['quiet']:
self._set_quietness(options['quietness'])
options.pop('quietness')
self._options.update(options)
return
def update_defaults(self, new_defaults):
"""update the options with new values passed in via options
@param options
"""
if new_defaults is not None:
self._defaults.update(new_defaults)
return
#===============================================================================
#
# Testing
#
#-------------------------------------------------------------------------------
if __name__ == '__main__':
import doctest
doctest.testmod(sys.modules[__name__])
|
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