class Cls:
ptr = base.MemoryPointer()
class Thread(base.NotmuchObject, collections.abc.Iterable):
_thread_p = base.MemoryPointer()
def __init__(self, parent, thread_p, *, db):
self._parent = parent
self._thread_p = thread_p
self._db = db
@property
def alive(self):
if not self._parent.alive:
return False
try:
self._thread_p
except errors.ObjectDestroyedError:
return False
else:
return True
def __del__(self):
self._destroy()
def _destroy(self):
if self.alive:
capi.lib.notmuch_thread_destroy(self._thread_p)
self._thread_p = None
@property
def threadid(self):
"""The thread ID as a :class:`BinString`.
:raises ObjectDestroyedError: if used after destoryed.
"""
ret = capi.lib.notmuch_thread_get_thread_id(self._thread_p)
return base.BinString.from_cffi(ret)
def __len__(self):
"""Return the number of messages in the thread.
:raises ObjectDestroyedError: if used after destoryed.
"""
return capi.lib.notmuch_thread_get_total_messages(self._thread_p)
def toplevel(self):
"""Return an iterator of the toplevel messages.
:returns: An iterator yielding :class:`Message` instances.
:raises ObjectDestroyedError: if used after destoryed.
"""
msgs_p = capi.lib.notmuch_thread_get_toplevel_messages(self._thread_p)
return message.MessageIter(self, msgs_p, db=self._db)
def __iter__(self):
"""Return an iterator over all the messages in the thread.
:returns: An iterator yielding :class:`Message` instances.
:raises ObjectDestroyedError: if used after destoryed.
"""
msgs_p = capi.lib.notmuch_thread_get_messages(self._thread_p)
return message.MessageIter(self, msgs_p, db=self._db)
@property
def matched(self):
"""The number of messages in this thread which matched the query.
Of the messages in the thread this gives the count of messages
which did directly match the search query which this thread
originates from.
:raises ObjectDestroyedError: if used after destoryed.
"""
return capi.lib.notmuch_thread_get_matched_messages(self._thread_p)
@property
def authors(self):
"""A comma-separated string of all authors in the thread.
Authors of messages which matched the query the thread was
retrieved from will be at the head of the string, ordered by
date of their messages. Following this will be the authors of
the other messages in the thread, also ordered by date of
their messages. Both groups of authors are separated by the
``|`` character.
:returns: The stringified list of authors.
:rtype: BinString
:raises ObjectDestroyedError: if used after destoryed.
"""
ret = capi.lib.notmuch_thread_get_authors(self._thread_p)
return base.BinString.from_cffi(ret)
@property
def subject(self):
"""The subject of the thread, taken from the first message.
The thread's subject is taken to be the subject of the first
message according to query sort order.
:returns: The thread's subject.
:rtype: BinString
:raises ObjectDestroyedError: if used after destoryed.
"""
ret = capi.lib.notmuch_thread_get_subject(self._thread_p)
return base.BinString.from_cffi(ret)
@property
def first(self):
"""Return the date of the oldest message in the thread.
The time the first message was sent as an integer number of
seconds since the *epoch*, 1 Jan 1970.
:raises ObjectDestroyedError: if used after destoryed.
"""
return capi.lib.notmuch_thread_get_oldest_date(self._thread_p)
@property
def last(self):
"""Return the date of the newest message in the thread.
The time the last message was sent as an integer number of
seconds since the *epoch*, 1 Jan 1970.
:raises ObjectDestroyedError: if used after destoryed.
"""
return capi.lib.notmuch_thread_get_newest_date(self._thread_p)
@property
def tags(self):
"""Return an immutable set with all tags used in this thread.
This returns an immutable set-like object implementing the
collections.abc.Set Abstract Base Class. Due to the
underlying libnotmuch implementation some operations have
different performance characteristics then plain set objects.
Mainly any lookup operation is O(n) rather then O(1).
Normal usage treats tags as UTF-8 encoded unicode strings so
they are exposed to Python as normal unicode string objects.
If you need to handle tags stored in libnotmuch which are not
valid unicode do check the :class:`ImmutableTagSet` docs for
how to handle this.
:rtype: ImmutableTagSet
:raises ObjectDestroyedError: if used after destoryed.
"""
try:
ref = self._cached_tagset
except AttributeError:
tagset = None
else:
tagset = ref()
if tagset is None:
tagset = tags.ImmutableTagSet(
self, '_thread_p', capi.lib.notmuch_thread_get_tags)
self._cached_tagset = weakref.ref(tagset)
return tagset
class Query(base.NotmuchObject):
"""Private, minimal query object.
This is not meant for users and is not a full implementation of
the query API. It is only an intermediate used internally to
match libnotmuch's memory management.
"""
_query_p = base.MemoryPointer()
def __init__(self, db, query_p):
self._db = db
self._query_p = query_p
@property
def alive(self):
if not self._db.alive:
return False
try:
self._query_p
except errors.ObjectDestroyedError:
return False
else:
return True
def __del__(self):
self._destroy()
def _destroy(self):
if self.alive:
capi.lib.notmuch_query_destroy(self._query_p)
self._query_p = None
@property
def query(self):
"""The query string as seen by libnotmuch."""
q = capi.lib.notmuch_query_get_query_string(self._query_p)
return base.BinString.from_cffi(q)
def messages(self):
"""Return an iterator over all the messages found by the query.
This executes the query and returns an iterator over the
:class:`Message` objects found.
"""
msgs_pp = capi.ffi.new('notmuch_messages_t**')
ret = capi.lib.notmuch_query_search_messages(self._query_p, msgs_pp)
if ret != capi.lib.NOTMUCH_STATUS_SUCCESS:
raise errors.NotmuchError(ret)
return message.MessageIter(self, msgs_pp[0], db=self._db)
def count_messages(self):
"""Return the number of messages matching this query."""
count_p = capi.ffi.new('unsigned int *')
ret = capi.lib.notmuch_query_count_messages(self._query_p, count_p)
if ret != capi.lib.NOTMUCH_STATUS_SUCCESS:
raise errors.NotmuchError(ret)
return count_p[0]
def threads(self):
"""Return an iterator over all the threads found by the query."""
threads_pp = capi.ffi.new('notmuch_threads_t **')
ret = capi.lib.notmuch_query_search_threads(self._query_p, threads_pp)
if ret != capi.lib.NOTMUCH_STATUS_SUCCESS:
raise errors.NotmuchError(ret)
return thread.ThreadIter(self, threads_pp[0], db=self._db)
def count_threads(self):
"""Return the number of threads matching this query."""
count_p = capi.ffi.new('unsigned int *')
ret = capi.lib.notmuch_query_count_threads(self._query_p, count_p)
if ret != capi.lib.NOTMUCH_STATUS_SUCCESS:
raise errors.NotmuchError(ret)
return count_p[0]
class Message(base.NotmuchObject):
"""An email message stored in the notmuch database.
This should not be directly created, instead it will be returned
by calling methods on :class:`Database`. A message keeps a
reference to the database object since the database object can not
be released while the message is in use.
Note that this represents a message in the notmuch database. For
full email functionality you may want to use the :mod:`email`
package from Python's standard library. You could e.g. create
this as such::
notmuch_msg = db.get_message(msgid) # or from a query
parser = email.parser.BytesParser(policy=email.policy.default)
with notmuch_msg.path.open('rb) as fp:
email_msg = parser.parse(fp)
Most commonly the functionality provided by notmuch is sufficient
to read email however.
Messages are considered equal when they have the same message ID.
This is how libnotmuch treats messages as well, the
:meth:`pathnames` function returns multiple results for
duplicates.
:param parent: The parent object. This is probably one off a
:class:`Database`, :class:`Thread` or :class:`Query`.
:type parent: NotmuchObject
:param db: The database instance this message is associated with.
This could be the same as the parent.
:type db: Database
:param msg_p: The C pointer to the ``notmuch_message_t``.
:type msg_p: <cdata>
:param dup: Whether the message was a duplicate on insertion.
:type dup: None or bool
"""
_msg_p = base.MemoryPointer()
def __init__(self, parent, msg_p, *, db):
self._parent = parent
self._msg_p = msg_p
self._db = db
@property
def alive(self):
if not self._parent.alive:
return False
try:
self._msg_p
except errors.ObjectDestroyedError:
return False
else:
return True
def __del__(self):
self._destroy()
def _destroy(self):
if self.alive:
capi.lib.notmuch_message_destroy(self._msg_p)
self._msg_p = None
@property
def messageid(self):
"""The message ID as a string.
The message ID is decoded with the ignore error handler. This
is fine as long as the message ID is well formed. If it is
not valid ASCII then this will be lossy. So if you need to be
able to write the exact same message ID back you should use
:attr:`messageidb`.
Note that notmuch will decode the message ID value and thus
strip off the surrounding ``<`` and ``>`` characters. This is
different from Python's :mod:`email` package behaviour which
leaves these characters in place.
:returns: The message ID.
:rtype: :class:`BinString`, this is a normal str but calling
bytes() on it will return the original bytes used to create
it.
:raises ObjectDestroyedError: if used after destoryed.
"""
ret = capi.lib.notmuch_message_get_message_id(self._msg_p)
return base.BinString(capi.ffi.string(ret))
@property
def threadid(self):
"""The thread ID.
The thread ID is decoded with the surrogateescape error
handler so that it is possible to reconstruct the original
thread ID if it is not valid UTF-8.
:returns: The thread ID.
:rtype: :class:`BinString`, this is a normal str but calling
bytes() on it will return the original bytes used to create
it.
:raises ObjectDestroyedError: if used after destoryed.
"""
ret = capi.lib.notmuch_message_get_thread_id(self._msg_p)
return base.BinString(capi.ffi.string(ret))
@property
def path(self):
"""A pathname of the message as a pathlib.Path instance.
If multiple files in the database contain the same message ID
this will be just one of the files, chosen at random.
:raises ObjectDestroyedError: if used after destoryed.
"""
ret = capi.lib.notmuch_message_get_filename(self._msg_p)
return pathlib.Path(os.fsdecode(capi.ffi.string(ret)))
@property
def pathb(self):
"""A pathname of the message as a bytes object.
See :attr:`path` for details, this is the same but does return
the path as a bytes object which is faster but less convenient.
:raises ObjectDestroyedError: if used after destoryed.
"""
ret = capi.lib.notmuch_message_get_filename(self._msg_p)
return capi.ffi.string(ret)
def filenames(self):
"""Return an iterator of all files for this message.
If multiple files contained the same message ID they will all
be returned here. The files are returned as intances of
:class:`pathlib.Path`.
:returns: Iterator yielding :class:`pathlib.Path` instances.
:rtype: iter
:raises ObjectDestroyedError: if used after destoryed.
"""
fnames_p = capi.lib.notmuch_message_get_filenames(self._msg_p)
return PathIter(self, fnames_p)
def filenamesb(self):
"""Return an iterator of all files for this message.
This is like :meth:`pathnames` but the files are returned as
byte objects instead.
:returns: Iterator yielding :class:`bytes` instances.
:rtype: iter
:raises ObjectDestroyedError: if used after destoryed.
"""
fnames_p = capi.lib.notmuch_message_get_filenames(self._msg_p)
return FilenamesIter(self, fnames_p)
@property
def ghost(self):
"""Indicates whether this message is a ghost message.
A ghost message if a message which we know exists, but it has
no files or content associated with it. This can happen if
it was referenced by some other message. Only the
:attr:`messageid` and :attr:`threadid` attributes are valid
for it.
:raises ObjectDestroyedError: if used after destoryed.
"""
ret = capi.lib.notmuch_message_get_flag(
self._msg_p, capi.lib.NOTMUCH_MESSAGE_FLAG_GHOST)
return bool(ret)
@property
def excluded(self):
"""Indicates whether this message was excluded from the query.
When a message is created from a search, sometimes messages
that where excluded by the search query could still be
returned by it, e.g. because they are part of a thread
matching the query. the :meth:`Database.query` method allows
these messages to be flagged, which results in this property
being set to *True*.
:raises ObjectDestroyedError: if used after destoryed.
"""
ret = capi.lib.notmuch_message_get_flag(
self._msg_p, capi.lib.NOTMUCH_MESSAGE_FLAG_EXCLUDED)
return bool(ret)
@property
def date(self):
"""The message date as an integer.
The time the message was sent as an integer number of seconds
since the *epoch*, 1 Jan 1970. This is derived from the
message's header, you can get the original header value with
:meth:`header`.
:raises ObjectDestroyedError: if used after destoryed.
"""
return capi.lib.notmuch_message_get_date(self._msg_p)
def header(self, name):
"""Return the value of the named header.
Returns the header from notmuch, some common headers are
stored in the database, others are read from the file.
Headers are returned with their newlines stripped and
collapsed concatenated together if they occur multiple times.
You may be better off using the standard library email
package's ``email.message_from_file(msg.path.open())`` if that
is not sufficient for you.
:param header: Case-insensitive header name to retrieve.
:type header: str or bytes
:returns: The header value, an empty string if the header is
not present.
:rtype: str
:raises LookupError: if the header is not present.
:raises NullPointerError: For unexpected notmuch errors.
:raises ObjectDestroyedError: if used after destoryed.
"""
# The returned is supposedly guaranteed to be UTF-8. Header
# names must be ASCII as per RFC x822.
if isinstance(name, str):
name = name.encode('ascii')
ret = capi.lib.notmuch_message_get_header(self._msg_p, name)
if ret == capi.ffi.NULL:
raise errors.NullPointerError()
hdr = capi.ffi.string(ret)
if not hdr:
raise LookupError
return hdr.decode(encoding='utf-8')
@property
def tags(self):
"""The tags associated with the message.
This behaves as a set. But removing and adding items to the
set removes and adds them to the message in the database.
:raises ReadOnlyDatabaseError: When manipulating tags on a
database opened in read-only mode.
:raises ObjectDestroyedError: if used after destoryed.
"""
try:
ref = self._cached_tagset
except AttributeError:
tagset = None
else:
tagset = ref()
if tagset is None:
tagset = tags.MutableTagSet(self, '_msg_p',
capi.lib.notmuch_message_get_tags)
self._cached_tagset = weakref.ref(tagset)
return tagset
@contextlib.contextmanager
def frozen(self):
"""Context manager to freeze the message state.
This allows you to perform atomic tag updates::
with msg.frozen():
msg.tags.clear()
msg.tags.add('foo')
Using This would ensure the message never ends up with no tags
applied at all.
It is safe to nest calls to this context manager.
:raises ReadOnlyDatabaseError: if the database is opened in
read-only mode.
:raises UnbalancedFreezeThawError: if you somehow managed to
call __exit__ of this context manager more than once. Why
did you do that?
:raises ObjectDestroyedError: if used after destoryed.
"""
ret = capi.lib.notmuch_message_freeze(self._msg_p)
if ret != capi.lib.NOTMUCH_STATUS_SUCCESS:
raise errors.NotmuchError(ret)
self._frozen = True
try:
yield
except Exception:
# Only way to "rollback" these changes is to destroy
# ourselves and re-create. Behold.
msgid = self.messageid
self._destroy()
with contextlib.suppress(Exception):
new = self._db.find(msgid)
self._msg_p = new._msg_p
new._msg_p = None
del new
raise
else:
ret = capi.lib.notmuch_message_thaw(self._msg_p)
if ret != capi.lib.NOTMUCH_STATUS_SUCCESS:
raise errors.NotmuchError(ret)
self._frozen = False
@property
def properties(self):
"""A map of arbitrary key-value pairs associated with the message.
Be aware that properties may be used by other extensions to
store state in. So delete or modify with care.
The properties map is somewhat special. It is essentially a
multimap-like structure where each key can have multiple
values. Therefore accessing a single item using
:meth:`PropertiesMap.get` or :meth:`PropertiesMap.__getitem__`
will only return you the *first* item if there are multiple
and thus are only recommended if you know there to be only one
value.
Instead the map has an additional :meth:`PropertiesMap.all`
method which can be used to retrieve all properties of a given
key. This method also allows iterating of a a subset of the
keys starting with a given prefix.
"""
try:
ref = self._cached_props
except AttributeError:
props = None
else:
props = ref()
if props is None:
props = PropertiesMap(self, '_msg_p')
self._cached_props = weakref.ref(props)
return props
def replies(self):
"""Return an iterator of all replies to this message.
This method will only work if the message was created from a
thread. Otherwise it will yield no results.
:returns: An iterator yielding :class:`Message` instances.
:rtype: MessageIter
"""
# The notmuch_messages_valid call accepts NULL and this will
# become an empty iterator, raising StopIteration immediately.
# Hence no return value checking here.
msgs_p = capi.lib.notmuch_message_get_replies(self._msg_p)
return MessageIter(self, msgs_p, db=self._db)
def __hash__(self):
return hash(self.messageid)
def __eq__(self, other):
if isinstance(other, self.__class__):
return self.messageid == other.messageid
class TagsIter(base.NotmuchObject, collections.abc.Iterator):
"""Iterator over tags.
This is only an interator, not a container so calling
:meth:`__iter__` does not return a new, replenished iterator but
only itself.
:param parent: The parent object to keep alive.
:param tags_p: The CFFI pointer to the C-level tags iterator.
:param encoding: Which codec to use. The default *None* does not
decode at all and will return the unmodified bytes.
Otherwise this is passed on to :func:`str.decode`.
:param errors: If using a codec, this is the error handler.
See :func:`str.decode` to which this is passed on.
:raises ObjectDestoryedError: if used after destroyed.
"""
_tags_p = base.MemoryPointer()
def __init__(self, parent, tags_p, *, encoding=None, errors='strict'):
self._parent = parent
self._tags_p = tags_p
self._encoding = encoding
self._errors = errors
def __del__(self):
self._destroy()
@property
def alive(self):
if not self._parent.alive:
return False
try:
self._tags_p
except errors.ObjectDestroyedError:
return False
else:
return True
def _destroy(self):
if self.alive:
try:
capi.lib.notmuch_tags_destroy(self._tags_p)
except errors.ObjectDestroyedError:
pass
self._tags_p = None
def __iter__(self):
"""Return the iterator itself.
Note that as this is an iterator and not a container this will
not return a new iterator. Thus any elements already consumed
will not be yielded by the :meth:`__next__` method anymore.
"""
return self
def __next__(self):
if not capi.lib.notmuch_tags_valid(self._tags_p):
self._destroy()
raise StopIteration()
tag_p = capi.lib.notmuch_tags_get(self._tags_p)
tag = capi.ffi.string(tag_p)
if self._encoding:
tag = tag.decode(encoding=self._encoding, errors=self._errors)
capi.lib.notmuch_tags_move_to_next(self._tags_p)
return tag
def __repr__(self):
try:
self._tags_p
except errors.ObjectDestroyedError:
return '<TagsIter (exhausted)>'
else:
return '<TagsIter>'