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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))
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']
'\\nhttp://www.gentoo.org/proj/en/overlays/repositories.xml'
>>> sorted(a.keys())
['bzr_command', 'cache', 'config', 'cvs_command', 'darcs_command',
'git_command', 'local_list', 'make_conf', 'mercurial_command',
'nocheck', 'overlays', 'proxy', 'quietness', 'rsync_command', 'storage',
'svn_command', 'tar_command', 'umask', 'width']
'''
self._defaults = {'config' : '/etc/layman/layman.cfg',
'storage' : '/var/lib/layman',
'cache' : '%(storage)s/cache',
'local_list': '%(storage)s/overlays.xml',
'make_conf' : '%(storage)s/make.conf',
'nocheck' : 'yes',
'proxy' : '',
'umask' : '0022',
'overlays' :
'http://www.gentoo.org/proj/en/overlays/repositories.xml',
'overlay_defs': '/etc/layman/overlays',
'bzr_command': '/usr/bin/bzr',
'cvs_command': '/usr/bin/cvs',
'darcs_command': '/usr/bin/darcs',
'git_command': '/usr/bin/git',
'g-common_command': '/usr/bin/g-common',
'mercurial_command': '/usr/bin/hg',
'rsync_command': '/usr/bin/rsync',
'svn_command': '/usr/bin/svn',
'tar_command': '/bin/tar',
'T/F_options': ['nocheck']
}
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': 4,
'nocolor': False,
'width': 0,
'verbose': False,
'quiet': False,
}
self.config = None
if read_configfile:
self.read_config(self.get_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 BareConfig options', 8)
keys = [i for i in self._options]
self._options['output'].debug('Retrieving BareConfig defaults', 8)
keys += [i for i in self._defaults
if not i in keys]
self._options['output'].debug('Retrieving BareConfig done...', 8)
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'] = 0
else:
self._set_quietness(4)
if option == 'quietness':
self._set_quietness(value)
def _set_quietness(self, value):
self._options['output'].set_info_level(int(self['quietness']))
self._options['output'].set_warn_level(int(self['quietness']))
def __getitem__(self, key):
return self._get_(key)
def _get_(self, key):
self._options['output'].debug(
'Retrieving BareConfig option: %s' % key, 8)
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 t_f_check(self.config.get('MAIN', key))
return self.config.get('MAIN', key)
self._options['output'].debug('Retrieving BareConfig default', 8)
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']
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