c2624fb48e
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@2927 fd906abe-77d9-0310-91a1-e0d9ade77398
146 lines
4.3 KiB
Python
146 lines
4.3 KiB
Python
#
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# Copyright (c) 2007 Helmut Merz helmutm@cy55.de
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (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 USA
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#
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"""
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Formulating configuration options.
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$Id$
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"""
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import os
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from zope.interface import implements
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from cybertools.util.jeep import Jeep
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_not_found = object()
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class Configurator(dict):
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filenamePrefix = 'cybertools'
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def __init__(self, *sections, **kw):
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for s in sections:
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setattr(self, s, ConfigSection(s))
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self.filename = kw.get('filename')
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def __getitem__(self, key):
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return getattr(self, key)
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def __getattr__(self, key):
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item = ConfigSection(key)
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setattr(self, key, item)
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return item
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def load(self, p=None, filename=None):
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if p is None:
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fn = self.getConfigFile(filename)
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if fn is not None:
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f = open(fn, 'r')
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p = f.read()
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f.close()
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if p is None:
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return
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exec p in self
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def save(self, filename=None):
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fn = self.getConfigFile(filename)
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if fn is None:
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fn = self.getDefaultConfigFile()
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if fn is not None:
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f = open(fn, 'w')
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f.write(repr(self))
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f.close()
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def __repr__(self):
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result = []
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for name, value in self.__dict__.items():
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if isinstance(value, ConfigSection):
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value.collect(name, result)
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return '\n'.join(sorted(result))
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def getConfigFile(self, filename=None):
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if filename is not None:
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self.filename = filename
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if self.filename is None:
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fn = self.getDefaultConfigFile()
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if os.path.isfile(fn):
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self.filename = fn
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return self.filename
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def getDefaultConfigFile(self):
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return os.path.join(os.path.expanduser('~'),
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'.%s.cfg' % self.filenamePrefix)
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class ConfigSection(list):
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__name__ = '???'
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def __init__(self, name=None):
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if name is not None:
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self.__name__ = name
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def __getattr__(self, attr):
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value = ConfigSection(attr)
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setattr(self, attr, value)
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return value
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def __getitem__(self, idx):
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while idx >= len(self):
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self.append(ConfigSection())
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return list.__getitem__(self, idx)
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def setdefault(self, attr, value):
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if attr not in self.__dict__:
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setattr(self, attr, value)
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return value
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return getattr(self, attr)
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def items(self):
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for name, value in self.__dict__.items():
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if isinstance(value, (str, int)):
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yield name, value
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def __call__(self, *args, **kw):
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for s in args:
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if isinstance(s, ConfigSection):
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# should we update an existing entry?
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#old = getattr(self, s.__name__, None)
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#if old is not None: # this would have to be done recursively
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# old.__dict__.update(s.__dict__)
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# for elem in s:
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# old.append(elem)
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#else:
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# or just keep the new one?
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setattr(self, s.__name__, s)
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for k, v in kw.items():
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setattr(self, k, v)
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return self
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def collect(self, ident, result):
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for idx, element in enumerate(self):
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element.collect('%s[%i]' % (ident, idx), result)
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for name, value in self.__dict__.items():
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if isinstance(value, ConfigSection):
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value.collect('%s.%s' % (ident, name), result)
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elif name != '__name__' and isinstance(value, (str, int, list, tuple)):
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result.append('%s.%s = %r' % (ident, name, value))
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