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"""
Copyright 2008-2011 Free Software Foundation, Inc.
This file is part of GNU Radio
GNU Radio Companion is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
GNU Radio Companion is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
"""
from UserDict import DictMixin
class odict(DictMixin):
def __init__(self, d={}):
self._keys = list(d.keys())
self._data = dict(d.copy())
def __setitem__(self, key, value):
if key not in self._data:
self._keys.append(key)
self._data[key] = value
def __getitem__(self, key):
return self._data[key]
def __delitem__(self, key):
del self._data[key]
self._keys.remove(key)
def keys(self):
return list(self._keys)
def copy(self):
copy_dict = odict()
copy_dict._data = self._data.copy()
copy_dict._keys = list(self._keys)
return copy_dict
def insert_after(self, pos_key, key, val):
"""
Insert the new key, value entry after the entry given by the position key.
If the positional key is None, insert at the end.
Args:
pos_key: the positional key
key: the key for the new entry
val: the value for the new entry
"""
index = (pos_key is None) and len(self._keys) or self._keys.index(pos_key)
if key in self._keys: raise KeyError('Cannot insert, key "%s" already exists'%str(key))
self._keys.insert(index+1, key)
self._data[key] = val
def insert_before(self, pos_key, key, val):
"""
Insert the new key, value entry before the entry given by the position key.
If the positional key is None, insert at the begining.
Args:
pos_key: the positional key
key: the key for the new entry
val: the value for the new entry
"""
index = (pos_key is not None) and self._keys.index(pos_key) or 0
if key in self._keys: raise KeyError('Cannot insert, key "%s" already exists'%str(key))
self._keys.insert(index, key)
self._data[key] = val
def find(self, key):
"""
Get the value for this key if exists.
Args:
key: the key to search for
Returns:
the value or None
"""
if self.has_key(key): return self[key]
return None
def findall(self, key):
"""
Get a list of values for this key.
Args:
key: the key to search for
Returns:
a list of values or empty list
"""
obj = self.find(key)
if obj is None: obj = list()
if isinstance(obj, list): return obj
return [obj]
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