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Diffstat (limited to 'source4/lib/tdb/swig/Tdb.py')
-rw-r--r-- | source4/lib/tdb/swig/Tdb.py | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/source4/lib/tdb/swig/Tdb.py b/source4/lib/tdb/swig/Tdb.py new file mode 100644 index 0000000000..ef0165ed8b --- /dev/null +++ b/source4/lib/tdb/swig/Tdb.py @@ -0,0 +1,115 @@ +"""Provide a more Pythonic and object-oriented interface to tdb.""" + +# +# Swig interface to Samba +# +# Copyright (C) Tim Potter 2006 +# +# 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 2 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, write to the Free Software +# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +# + +import tdb, os + +# Open flags + +DEFAULT = tdb.TDB_DEFAULT +CLEAR_IF_FIRST = tdb.TDB_CLEAR_IF_FIRST +INTERNAL = tdb.TDB_INTERNAL +NOLOCK = tdb.TDB_NOLOCK +NOMMAP = tdb.TDB_NOMMAP + +# Class representing a TDB file + +class Tdb: + + # Create and destroy Tdb objects + + def __init__(self, name, hash_size = 0, flags = tdb.TDB_DEFAULT, + open_flags = os.O_RDWR | os.O_CREAT, mode = 0600): + self.tdb = tdb.open(name, hash_size, flags, open_flags, mode) + if self.tdb is None: + raise IOError, tdb.errorstr(self.tdb) + + def __del__(self): + self.close() + + def close(self): + if hasattr(self, 'tdb') and self.tdb is not None: + if tdb.close(self.tdb) == -1: + raise IOError, tdb.errorstr(self.tdb) + self.tdb = None + + # Random access to keys, values + + def __getitem__(self, key): + result = tdb.fetch(self.tdb, key) + if result is None: + raise KeyError, '%s: %s' % (key, tdb.errorstr(self.tdb)) + return result + + def __setitem__(self, key, item): + if tdb.store(self.tdb, key, item) == -1: + raise IOError, tdb.errorstr(self.tdb) + + def __delitem__(self, key): + if not tdb.exists(self.tdb, key): + raise KeyError, '%s: %s' % (key, tdb.errorstr(self.tdb)) + tdb.delete(self.tdb, key) + + def has_key(self, key): + return tdb.exists(self.tdb, key) + + # Tdb iterator + + class TdbIterator: + def __init__(self, tdb): + self.tdb = tdb + self.key = None + + def __iter__(self): + return self + + def next(self): + if self.key is None: + self.key = tdb.firstkey(self.tdb) + if self.key is None: + raise StopIteration + return self.key + else: + self.key = tdb.nextkey(self.tdb, self.key) + if self.key is None: + raise StopIteration + return self.key + + def __iter__(self): + return Tdb.TdbIterator(self.tdb) + + # Implement other dict functions using TdbIterator + + def keys(self): + return [k for k in iter(self)] + + def values(self): + return [self[k] for k in iter(self)] + + def items(self): + return [(k, self[k]) for k in iter(self)] + + def __len__(self): + return len(self.keys()) + + def clear(self): + for k in iter(self): + del(self[k]) |