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# Text wrapper for tdb bindings
#
# Copyright (C) 2015 Petr Viktorin <pviktori@redhat.com>
# Published under the GNU LGPLv3 or later
import sys
import tdb
class TdbTextWrapper(object):
"""Text interface for a TDB file"""
def __init__(self, tdb):
self._tdb = tdb
@property
def raw(self):
return self._tdb
def get(self, key):
key = key.encode('utf-8')
result = self._tdb.get(key)
if result is not None:
return result.decode('utf-8')
def append(self, key, value):
key = key.encode('utf-8')
value = value.encode('utf-8')
self._tdb.append(key, value)
def firstkey(self):
result = self._tdb.firstkey()
if result:
return result.decode('utf-8')
def nextkey(self, key):
key = key.encode('utf-8')
result = self._tdb.nextkey(key)
if result is not None:
return result.decode('utf-8')
def delete(self, key):
key = key.encode('utf-8')
self._tdb.delete(key)
def store(self, key, value):
key = key.encode('utf-8')
value = value.encode('utf-8')
self._tdb.store(key, value)
def __iter__(self):
for key in iter(self._tdb):
yield key.decode('utf-8')
def __getitem__(self, key):
key = key.encode('utf-8')
result = self._tdb[key]
return result.decode('utf-8')
def __contains__(self, key):
key = key.encode('utf-8')
return key in self._tdb
def __repr__(self):
return '<TdbTextWrapper for %r>' % self._tdb
def __setitem__(self, key, value):
key = key.encode('utf-8')
value = value.encode('utf-8')
self._tdb[key] = value
def __delitem__(self, key):
key = key.encode('utf-8')
del self._tdb[key]
if sys.version_info > (3, 0):
keys = __iter__
else:
iterkeys = __iter__
has_key = __contains__
## Add wrappers for functions and getters that don't deal with text
def _add_wrapper(name):
orig = getattr(tdb.Tdb, name)
def wrapper(self, *args, **kwargs):
return orig(self._tdb, *args, **kwargs)
wrapper.__name__ = orig.__name__
wrapper.__doc__ = orig.__doc__
setattr(TdbTextWrapper, name, wrapper)
for name in ("transaction_cancel",
"transaction_commit",
"transaction_prepare_commit",
"transaction_start",
"reopen",
"lock_all",
"unlock_all",
"read_lock_all",
"read_unlock_all",
"close",
"add_flags",
"remove_flags",
"clear",
"repack",
"enable_seqnum",
"increment_seqnum_nonblock",
):
_add_wrapper(name)
def _add_getter(name):
orig = getattr(tdb.Tdb, name)
doc = orig.__doc__
def getter(self):
return getattr(self._tdb, name)
def setter(self, value):
return setattr(self._tdb, name, value)
setattr(TdbTextWrapper, name, property(getter, setter, doc=doc))
for name in ("hash_size",
"map_size",
"freelist_size",
"flags",
"max_dead",
"filename",
"seqnum",
"text",
):
_add_getter(name)