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author | Lars Wirzenius <liw@liw.fi> | 2016-08-14 09:56:20 +0300 |
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committer | Lars Wirzenius <liw@liw.fi> | 2016-08-14 10:08:35 +0300 |
commit | 7d461c35e49f8f0c9922fc4f52d306a186e44106 (patch) | |
tree | 6a6b898d83be41af2795694f06f65e7d45e2d1e3 /obnamlib/fmt_ga/leaf.py | |
parent | 5bfc5d1667ca2fec3f1cdc0da7ab32ac0e8ef44a (diff) | |
download | obnam-7d461c35e49f8f0c9922fc4f52d306a186e44106.tar.gz |
Add CowLeaf to be used by CowTree
Diffstat (limited to 'obnamlib/fmt_ga/leaf.py')
-rw-r--r-- | obnamlib/fmt_ga/leaf.py | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/obnamlib/fmt_ga/leaf.py b/obnamlib/fmt_ga/leaf.py new file mode 100644 index 00000000..6522a6a9 --- /dev/null +++ b/obnamlib/fmt_ga/leaf.py @@ -0,0 +1,43 @@ +# Copyright 2016 Lars Wirzenius +# +# This program 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 3 of the License, or +# (at your option) any later version. +# +# This program 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, see <http://www.gnu.org/licenses/>. +# +# =*= License: GPL-3+ =*= + + +import copy + + +class CowLeaf(object): + + def __init__(self): + self._dict = {} + + def __len__(self): + return len(self._dict) + + def keys(self): + return self._dict.keys() + + def lookup(self, key): + return self._dict.get(key, None) + + def insert(self, key, value): + self._dict[key] = value + + def as_dict(self): + return copy.deepcopy(self._dict) + + def from_dict(self, a_dict): + self._dict = a_dict |