mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-11-22 10:58:10 +01:00
85 lines
2.8 KiB
Python
85 lines
2.8 KiB
Python
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import collections.abc
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import notmuch2._base as base
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import notmuch2._capi as capi
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import notmuch2._errors as errors
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__all__ = ['ConfigMapping']
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class ConfigIter(base.NotmuchIter):
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def __init__(self, parent, iter_p):
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super().__init__(
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parent, iter_p,
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fn_destroy=capi.lib.notmuch_config_list_destroy,
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fn_valid=capi.lib.notmuch_config_list_valid,
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fn_get=capi.lib.notmuch_config_list_key,
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fn_next=capi.lib.notmuch_config_list_move_to_next)
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def __next__(self):
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item = super().__next__()
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return base.BinString.from_cffi(item)
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class ConfigMapping(base.NotmuchObject, collections.abc.MutableMapping):
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"""The config key/value pairs stored in the database.
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The entries are exposed as a :class:`collections.abc.MutableMapping` object.
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Note that setting a value to an empty string is the same as deleting it.
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:param parent: the parent object
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:param ptr_name: the name of the attribute on the parent which will
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return the memory pointer. This allows this object to
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access the pointer via the parent's descriptor and thus
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trigger :class:`MemoryPointer`'s memory safety.
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"""
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def __init__(self, parent, ptr_name):
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self._parent = parent
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self._ptr = lambda: getattr(parent, ptr_name)
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@property
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def alive(self):
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return self._parent.alive
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def _destroy(self):
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pass
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def __getitem__(self, key):
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if isinstance(key, str):
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key = key.encode('utf-8')
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val_pp = capi.ffi.new('char**')
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ret = capi.lib.notmuch_database_get_config(self._ptr(), key, val_pp)
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if ret != capi.lib.NOTMUCH_STATUS_SUCCESS:
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raise errors.NotmuchError(ret)
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if val_pp[0] == "":
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capi.lib.free(val_pp[0])
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raise KeyError
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val = base.BinString.from_cffi(val_pp[0])
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capi.lib.free(val_pp[0])
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return val
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def __setitem__(self, key, val):
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if isinstance(key, str):
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key = key.encode('utf-8')
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if isinstance(val, str):
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val = val.encode('utf-8')
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ret = capi.lib.notmuch_database_set_config(self._ptr(), key, val)
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if ret != capi.lib.NOTMUCH_STATUS_SUCCESS:
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raise errors.NotmuchError(ret)
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def __delitem__(self, key):
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self[key] = ""
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def __iter__(self):
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"""Return an iterator over the config items.
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:raises NullPointerError: If the iterator can not be created.
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"""
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configlist_pp = capi.ffi.new('notmuch_config_list_t**')
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ret = capi.lib.notmuch_database_get_config_list(self._ptr(), b'', configlist_pp)
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if ret != capi.lib.NOTMUCH_STATUS_SUCCESS:
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raise errors.NotmuchError(ret)
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return ConfigIter(self._parent, configlist_pp[0])
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def __len__(self):
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return sum(1 for t in self)
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