"""
from ctypes import c_char_p, c_long, c_int
-from notmuch.globals import (nmlib, STATUS,
- NotmuchError, NotmuchThreadP, NotmuchThreadsP, NotmuchMessagesP,
- NotmuchTagsP, Python3StringMixIn)
-from notmuch.message import Messages
+from notmuch.globals import (
+ nmlib,
+ NotmuchThreadP,
+ NotmuchMessagesP,
+ NotmuchTagsP,
+)
+from .errors import (
+ NullPointerError,
+ NotInitializedError,
+)
+from .messages import Messages
from notmuch.tag import Tags
from datetime import date
-
-class Threads(Python3StringMixIn):
- """Represents a list of notmuch threads
-
- This object provides an iterator over a list of notmuch threads
- (Technically, it provides a wrapper for the underlying
- *notmuch_threads_t* structure). Do note that the underlying
- library only provides a one-time iterator (it cannot reset the
- iterator to the start). Thus iterating over the function will
- "exhaust" the list of threads, and a subsequent iteration attempt
- will raise a :exc:`NotmuchError` STATUS.NOT_INITIALIZED. Also
- note, that any function that uses iteration will also
- exhaust the messages. So both::
-
- for thread in threads: print thread
-
- as well as::
-
- number_of_msgs = len(threads)
-
- will "exhaust" the threads. If you need to re-iterate over a list of
- messages you will need to retrieve a new :class:`Threads` object.
-
- Things are not as bad as it seems though, you can store and reuse
- the single Thread objects as often as you want as long as you
- keep the parent Threads object around. (Recall that due to
- hierarchical memory allocation, all derived Threads objects will
- be invalid when we delete the parent Threads() object, even if it
- was already "exhausted".) So this works::
-
- db = Database()
- threads = Query(db,'').search_threads() #get a Threads() object
- threadlist = []
- for thread in threads:
- threadlist.append(thread)
-
- # threads is "exhausted" now and even len(threads) will raise an
- # exception.
- # However it will be kept around until all retrieved Thread() objects are
- # also deleted. If you did e.g. an explicit del(threads) here, the
- # following lines would fail.
-
- # You can reiterate over *threadlist* however as often as you want.
- # It is simply a list with Thread objects.
-
- print (threadlist[0].get_thread_id())
- print (threadlist[1].get_thread_id())
- print (threadlist[0].get_total_messages())
- """
-
- #notmuch_threads_get
- _get = nmlib.notmuch_threads_get
- _get.argtypes = [NotmuchThreadsP]
- _get.restype = NotmuchThreadP
-
- def __init__(self, threads_p, parent=None):
- """
- :param threads_p: A pointer to an underlying *notmuch_threads_t*
- structure. These are not publically exposed, so a user
- will almost never instantiate a :class:`Threads` object
- herself. They are usually handed back as a result,
- e.g. in :meth:`Query.search_threads`. *threads_p* must be
- valid, we will raise an :exc:`NotmuchError`
- (STATUS.NULL_POINTER) if it is `None`.
- :type threads_p: :class:`ctypes.c_void_p`
- :param parent: The parent object
- (ie :class:`Query`) these tags are derived from. It saves
- a reference to it, so we can automatically delete the db
- object once all derived objects are dead.
- :TODO: Make the iterator work more than once and cache the tags in
- the Python object.(?)
- """
- if threads_p is None:
- raise NotmuchError(STATUS.NULL_POINTER)
-
- self._threads = threads_p
- #store parent, so we keep them alive as long as self is alive
- self._parent = parent
-
- def __iter__(self):
- """ Make Threads an iterator """
- return self
-
- _valid = nmlib.notmuch_threads_valid
- _valid.argtypes = [NotmuchThreadsP]
- _valid.restype = bool
-
- _move_to_next = nmlib.notmuch_threads_move_to_next
- _move_to_next.argtypes = [NotmuchThreadsP]
- _move_to_next.restype = None
-
- def __next__(self):
- if self._threads is None:
- raise NotmuchError(STATUS.NOT_INITIALIZED)
-
- if not self._valid(self._threads):
- self._threads = None
- raise StopIteration
-
- thread = Thread(Threads._get(self._threads), self)
- self._move_to_next(self._threads)
- return thread
- next = __next__ # python2.x iterator protocol compatibility
-
- def __len__(self):
- """len(:class:`Threads`) returns the number of contained Threads
-
- .. note:: As this iterates over the threads, we will not be able to
- iterate over them again! So this will fail::
-
- #THIS FAILS
- threads = Database().create_query('').search_threads()
- if len(threads) > 0: #this 'exhausts' threads
- # next line raises NotmuchError(STATUS.NOT_INITIALIZED)!!!
- for thread in threads: print thread
- """
- if self._threads is None:
- raise NotmuchError(STATUS.NOT_INITIALIZED)
-
- i = 0
- # returns 'bool'. On out-of-memory it returns None
- while self._valid(self._threads):
- self._move_to_next(self._threads)
- i += 1
- # reset self._threads to mark as "exhausted"
- self._threads = None
- return i
-
- def __nonzero__(self):
- """Check if :class:`Threads` contains at least one more valid thread
-
- The existence of this function makes 'if Threads: foo' work, as
- that will implicitely call len() exhausting the iterator if
- __nonzero__ does not exist. This function makes `bool(Threads())`
- work repeatedly.
-
- :return: True if there is at least one more thread in the
- Iterator, False if not. None on a "Out-of-memory" error.
- """
- return self._threads is not None and \
- self._valid(self._threads) > 0
-
- _destroy = nmlib.notmuch_threads_destroy
- _destroy.argtypes = [NotmuchThreadsP]
- _destroy.argtypes = None
-
- def __del__(self):
- """Close and free the notmuch Threads"""
- if self._threads is not None:
- self._destroy(self._threads)
-
-
class Thread(object):
"""Represents a single message thread."""
will almost never instantiate a :class:`Thread` object
herself. They are usually handed back as a result,
e.g. when iterating through :class:`Threads`. *thread_p*
- must be valid, we will raise an :exc:`NotmuchError`
- (STATUS.NULL_POINTER) if it is `None`.
+ must be valid, we will raise an :exc:`NullPointerError`
+ if it is `None`.
:param parent: A 'parent' object is passed which this message is
derived from. We save a reference to it, so we can
automatically delete the parent object once all derived
objects are dead.
"""
- if thread_p is None:
- raise NotmuchError(STATUS.NULL_POINTER)
+ if not thread_p:
+ raise NullPointerError()
self._thread = thread_p
#keep reference to parent, so we keep it alive
self._parent = parent
for as long as the thread is valid.
:returns: String with a message ID
- :exception: :exc:`NotmuchError` STATUS.NOT_INITIALIZED if the thread
+ :raises: :exc:`NotInitializedError` if the thread
is not initialized.
"""
- if self._thread is None:
- raise NotmuchError(STATUS.NOT_INITIALIZED)
+ if not self._thread:
+ raise NotInitializedError()
return Thread._get_thread_id(self._thread).decode('utf-8', 'ignore')
_get_total_messages = nmlib.notmuch_thread_get_total_messages
:returns: The number of all messages in the database
belonging to this thread. Contrast with
:meth:`get_matched_messages`.
- :exception: :exc:`NotmuchError` STATUS.NOT_INITIALIZED if the thread
+ :raises: :exc:`NotInitializedError` if the thread
is not initialized.
"""
- if self._thread is None:
- raise NotmuchError(STATUS.NOT_INITIALIZED)
+ if not self._thread:
+ raise NotInitializedError()
return self._get_total_messages(self._thread)
def get_toplevel_messages(self):
messages, etc.).
:returns: :class:`Messages`
- :exception: :exc:`NotmuchError`
-
- * STATUS.NOT_INITIALIZED if query is not inited
- * STATUS.NULL_POINTER if search_messages failed
+ :raises: :exc:`NotInitializedError` if query is not initialized
+ :raises: :exc:`NullPointerError` if search_messages failed
"""
- if self._thread is None:
- raise NotmuchError(STATUS.NOT_INITIALIZED)
+ if not self._thread:
+ raise NotInitializedError()
msgs_p = Thread._get_toplevel_messages(self._thread)
- if msgs_p is None:
- raise NotmuchError(STATUS.NULL_POINTER)
+ if not msgs_p:
+ raise NullPointerError()
return Messages(msgs_p, self)
:returns: The number of all messages belonging to this thread that
matched the :class:`Query`from which this thread was created.
Contrast with :meth:`get_total_messages`.
- :exception: :exc:`NotmuchError` STATUS.NOT_INITIALIZED if the thread
+ :raises: :exc:`NotInitializedError` if the thread
is not initialized.
"""
- if self._thread is None:
- raise NotmuchError(STATUS.NOT_INITIALIZED)
+ if not self._thread:
+ raise NotInitializedError()
return self._get_matched_messages(self._thread)
def get_authors(self):
The returned string belongs to 'thread' and will only be valid for
as long as this Thread() is not deleted.
"""
- if self._thread is None:
- raise NotmuchError(STATUS.NOT_INITIALIZED)
+ if not self._thread:
+ raise NotInitializedError()
authors = Thread._get_authors(self._thread)
- if authors is None:
+ if not authors:
return None
return authors.decode('UTF-8', 'ignore')
The returned string belongs to 'thread' and will only be valid for
as long as this Thread() is not deleted.
"""
- if self._thread is None:
- raise NotmuchError(STATUS.NOT_INITIALIZED)
+ if not self._thread:
+ raise NotInitializedError()
subject = Thread._get_subject(self._thread)
- if subject is None:
+ if not subject:
return None
return subject.decode('UTF-8', 'ignore')
:returns: A time_t timestamp.
:rtype: c_unit64
- :exception: :exc:`NotmuchError` STATUS.NOT_INITIALIZED if the message
+ :raises: :exc:`NotInitializedError` if the message
is not initialized.
"""
- if self._thread is None:
- raise NotmuchError(STATUS.NOT_INITIALIZED)
+ if not self._thread:
+ raise NotInitializedError()
return Thread._get_newest_date(self._thread)
def get_oldest_date(self):
:returns: A time_t timestamp.
:rtype: c_unit64
- :exception: :exc:`NotmuchError` STATUS.NOT_INITIALIZED if the message
+ :raises: :exc:`NotInitializedError` if the message
is not initialized.
"""
- if self._thread is None:
- raise NotmuchError(STATUS.NOT_INITIALIZED)
+ if not self._thread:
+ raise NotInitializedError()
return Thread._get_oldest_date(self._thread)
def get_tags(self):
query from which it derived is explicitely deleted).
:returns: A :class:`Tags` iterator.
- :exception: :exc:`NotmuchError`
-
- * STATUS.NOT_INITIALIZED if the thread
- is not initialized.
- * STATUS.NULL_POINTER, on error
+ :raises: :exc:`NotInitializedError` if query is not initialized
+ :raises: :exc:`NullPointerError` if search_messages failed
"""
- if self._thread is None:
- raise NotmuchError(STATUS.NOT_INITIALIZED)
+ if not self._thread:
+ raise NotInitializedError()
tags_p = Thread._get_tags(self._thread)
if tags_p == None:
- raise NotmuchError(STATUS.NULL_POINTER)
+ raise NullPointerError()
return Tags(tags_p, self)
def __unicode__(self):
projects / notmuch / blobdiff