2 This file is part of notmuch.
4 Notmuch is free software: you can redistribute it and/or modify it
5 under the terms of the GNU General Public License as published by the
6 Free Software Foundation, either version 3 of the License, or (at your
7 option) any later version.
9 Notmuch is distributed in the hope that it will be useful, but WITHOUT
10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License
15 along with notmuch. If not, see <http://www.gnu.org/licenses/>.
17 Copyright 2010 Sebastian Spaeth <Sebastian@SSpaeth.de>'
21 from ctypes import c_int, c_char_p, c_void_p, c_uint, c_long, byref
22 from notmuch.globals import nmlib, STATUS, NotmuchError, Enum
23 from notmuch.thread import Threads
24 from notmuch.message import Messages, Message
25 from notmuch.tag import Tags
27 class Database(object):
28 """Represents a notmuch database (wraps notmuch_database_t)
30 .. note:: Do remember that as soon as we tear down this object,
31 all underlying derived objects such as queries, threads,
32 messages, tags etc will be freed by the underlying library
33 as well. Accessing these objects will lead to segfaults and
34 other unexpected behavior. See above for more details.
37 """Class attribute to cache user's default database"""
39 MODE = Enum(['READ_ONLY','READ_WRITE'])
40 """Constants: Mode in which to open the database"""
42 """notmuch_database_get_directory"""
43 _get_directory = nmlib.notmuch_database_get_directory
44 _get_directory.restype = c_void_p
46 """notmuch_database_get_path"""
47 _get_path = nmlib.notmuch_database_get_path
48 _get_path.restype = c_char_p
50 """notmuch_database_get_version"""
51 _get_version = nmlib.notmuch_database_get_version
52 _get_version.restype = c_uint
54 """notmuch_database_open"""
55 _open = nmlib.notmuch_database_open
56 _open.restype = c_void_p
58 """notmuch_database_upgrade"""
59 _upgrade = nmlib.notmuch_database_upgrade
60 _upgrade.argtypes = [c_void_p, c_void_p, c_void_p]
62 """ notmuch_database_find_message"""
63 _find_message = nmlib.notmuch_database_find_message
64 _find_message.restype = c_void_p
66 """notmuch_database_get_all_tags"""
67 _get_all_tags = nmlib.notmuch_database_get_all_tags
68 _get_all_tags.restype = c_void_p
70 """notmuch_database_create"""
71 _create = nmlib.notmuch_database_create
72 _create.restype = c_void_p
74 def __init__(self, path=None, create=False, mode= 0):
75 """If *path* is `None`, we will try to read a users notmuch
76 configuration and use his configured database. The location of the
77 configuration file can be specified through the environment variable
78 *NOTMUCH_CONFIG*, falling back to the default `~/.notmuch-config`.
80 If *create* is `True`, the database will always be created in
81 :attr:`MODE`.READ_WRITE mode. Default mode for opening is READ_ONLY.
83 :param path: Directory to open/create the database in (see
84 above for behavior if `None`)
85 :type path: `str` or `None`
86 :param create: Pass `False` to open an existing, `True` to create a new
89 :param mode: Mode to open a database in. Is always
90 :attr:`MODE`.READ_WRITE when creating a new one.
91 :type mode: :attr:`MODE`
93 :exception: :exc:`NotmuchError` in case of failure.
97 # no path specified. use a user's default database
98 if Database._std_db_path is None:
99 #the following line throws a NotmuchError if it fails
100 Database._std_db_path = self._get_user_default_db()
101 path = Database._std_db_path
103 assert isinstance(path, basestring), 'Path needs to be a string or None.'
105 self.open(path, mode)
109 def _verify_initialized_db(self):
110 """Raises a NotmuchError in case self._db is still None"""
112 raise NotmuchError(STATUS.NOT_INITIALIZED)
114 def create(self, path):
115 """Creates a new notmuch database
117 This function is used by __init__() and usually does not need
118 to be called directly. It wraps the underlying
119 *notmuch_database_create* function and creates a new notmuch
120 database at *path*. It will always return a database in :attr:`MODE`
121 .READ_WRITE mode as creating an empty database for
122 reading only does not make a great deal of sense.
124 :param path: A directory in which we should create the database.
127 :exception: :exc:`NotmuchError` in case of any failure
128 (after printing an error message on stderr).
130 if self._db is not None:
132 message="Cannot create db, this Database() already has an open one.")
134 res = Database._create(path, Database.MODE.READ_WRITE)
138 message="Could not create the specified database")
141 def open(self, path, mode= 0):
142 """Opens an existing database
144 This function is used by __init__() and usually does not need
145 to be called directly. It wraps the underlying
146 *notmuch_database_open* function.
148 :param status: Open the database in read-only or read-write mode
149 :type status: :attr:`MODE`
151 :exception: Raises :exc:`NotmuchError` in case
152 of any failure (after printing an error message on stderr).
155 res = Database._open(path, mode)
159 message="Could not open the specified database")
163 """Returns the file path of an open database
165 Wraps *notmuch_database_get_path*."""
166 # Raise a NotmuchError if not initialized
167 self._verify_initialized_db()
169 return Database._get_path(self._db)
171 def get_version(self):
172 """Returns the database format version
174 :returns: The database version as positive integer
175 :exception: :exc:`NotmuchError` with STATUS.NOT_INITIALIZED if
176 the database was not intitialized.
178 # Raise a NotmuchError if not initialized
179 self._verify_initialized_db()
181 return Database._get_version (self._db)
183 def needs_upgrade(self):
184 """Does this database need to be upgraded before writing to it?
186 If this function returns `True` then no functions that modify the
187 database (:meth:`add_message`,
188 :meth:`Message.add_tag`, :meth:`Directory.set_mtime`,
189 etc.) will work unless :meth:`upgrade` is called successfully first.
191 :returns: `True` or `False`
192 :exception: :exc:`NotmuchError` with STATUS.NOT_INITIALIZED if
193 the database was not intitialized.
195 # Raise a NotmuchError if not initialized
196 self._verify_initialized_db()
198 return notmuch_database_needs_upgrade(self._db)
201 """Upgrades the current database
203 After opening a database in read-write mode, the client should
204 check if an upgrade is needed (notmuch_database_needs_upgrade) and
205 if so, upgrade with this function before making any modifications.
207 NOT IMPLEMENTED: The optional progress_notify callback can be
208 used by the caller to provide progress indication to the
209 user. If non-NULL it will be called periodically with
210 'progress' as a floating-point value in the range of [0.0..1.0]
211 indicating the progress made so far in the upgrade process.
213 :TODO: catch exceptions, document return values and etc...
215 # Raise a NotmuchError if not initialized
216 self._verify_initialized_db()
218 status = Database._upgrade (self._db, None, None)
219 #TODO: catch exceptions, document return values and etc
222 def get_directory(self, path):
223 """Returns a :class:`Directory` of path,
224 (creating it if it does not exist(?))
226 .. warning:: This call needs a writeable database in
227 Database.MODE.READ_WRITE mode. The underlying library will exit the
228 program if this method is used on a read-only database!
230 :param path: A str containing the path relative to the path of database
231 (see :meth:`get_path`), or else should be an absolute path
232 with initial components that match the path of 'database'.
233 :returns: :class:`Directory` or raises an exception.
234 :exception: :exc:`NotmuchError`
236 STATUS.NOT_INITIALIZED
237 If the database was not intitialized.
240 If path is not relative database or absolute with initial
241 components same as database.
244 # Raise a NotmuchError if not initialized
245 self._verify_initialized_db()
247 # sanity checking if path is valid, and make path absolute
248 if path[0] == os.sep:
249 # we got an absolute path
250 if not path.startswith(self.get_path()):
251 # but its initial components are not equal to the db path
252 raise NotmuchError(STATUS.FILE_ERROR,
253 message="Database().get_directory() called with a wrong absolute path.")
256 #we got a relative path, make it absolute
257 abs_dirpath = os.path.abspath(os.path.join(self.get_path(),path))
259 dir_p = Database._get_directory(self._db, path);
261 # return the Directory, init it with the absolute path
262 return Directory(abs_dirpath, dir_p, self)
264 def add_message(self, filename):
265 """Adds a new message to the database
267 `filename` should be a path relative to the path of the open
268 database (see :meth:`get_path`), or else should be an absolute
269 filename with initial components that match the path of the
272 The file should be a single mail message (not a multi-message mbox)
273 that is expected to remain at its current location, since the
274 notmuch database will reference the filename, and will not copy the
275 entire contents of the file.
277 If the message contains Maildir flags, we will -depending on the
278 notmuch configuration- sync those tags to initial notmuch tags.
280 :returns: On success, we return
282 1) a :class:`Message` object that can be used for things
283 such as adding tags to the just-added message.
284 2) one of the following STATUS values:
287 Message successfully added to database.
288 STATUS.DUPLICATE_MESSAGE_ID
289 Message has the same message ID as another message already
290 in the database. The new filename was successfully added
291 to the message in the database.
293 :rtype: 2-tuple(:class:`Message`, STATUS)
295 :exception: Raises a :exc:`NotmuchError` with the following meaning.
296 If such an exception occurs, nothing was added to the database.
299 An error occurred trying to open the file, (such as
300 permission denied, or file not found, etc.).
301 STATUS.FILE_NOT_EMAIL
302 The contents of filename don't look like an email message.
303 STATUS.READ_ONLY_DATABASE
304 Database was opened in read-only mode so no message can
306 STATUS.NOT_INITIALIZED
307 The database has not been initialized.
309 # Raise a NotmuchError if not initialized
310 self._verify_initialized_db()
313 status = nmlib.notmuch_database_add_message(self._db,
317 if not status in [STATUS.SUCCESS, STATUS.DUPLICATE_MESSAGE_ID]:
318 raise NotmuchError(status)
320 #construct Message(), sync initial tags from Maildir flags and return
321 msg = Message(msg_p, self)
322 msg.maildir_flags_to_tags()
325 def remove_message(self, filename):
326 """Removes a message from the given notmuch database
328 Note that only this particular filename association is removed from
329 the database. If the same message (as determined by the message ID)
330 is still available via other filenames, then the message will
331 persist in the database for those filenames. When the last filename
332 is removed for a particular message, the database content for that
333 message will be entirely removed.
335 :returns: A STATUS value with the following meaning:
338 The last filename was removed and the message was removed
340 STATUS.DUPLICATE_MESSAGE_ID
341 This filename was removed but the message persists in the
342 database with at least one other filename.
344 :exception: Raises a :exc:`NotmuchError` with the following meaning.
345 If such an exception occurs, nothing was removed from the database.
347 STATUS.READ_ONLY_DATABASE
348 Database was opened in read-only mode so no message can be
350 STATUS.NOT_INITIALIZED
351 The database has not been initialized.
353 # Raise a NotmuchError if not initialized
354 self._verify_initialized_db()
356 return nmlib.notmuch_database_remove_message(self._db,
359 def find_message(self, msgid):
360 """Returns a :class:`Message` as identified by its message ID
362 Wraps the underlying *notmuch_database_find_message* function.
364 :param msgid: The message ID
366 :returns: :class:`Message` or `None` if no message is found or
367 if any xapian exception or out-of-memory situation
368 occurs. Do note that Xapian Exceptions include
369 "Database modified" situations, e.g. when the
370 notmuch database has been modified by
371 another program in the meantime. A return value of
372 `None` is therefore no guarantee that the message
374 :exception: :exc:`NotmuchError` with STATUS.NOT_INITIALIZED if
375 the database was not intitialized.
377 # Raise a NotmuchError if not initialized
378 self._verify_initialized_db()
380 msg_p = Database._find_message(self._db, msgid)
383 return Message(msg_p, self)
385 def get_all_tags(self):
386 """Returns :class:`Tags` with a list of all tags found in the database
388 :returns: :class:`Tags`
389 :execption: :exc:`NotmuchError` with STATUS.NULL_POINTER on error
391 # Raise a NotmuchError if not initialized
392 self._verify_initialized_db()
394 tags_p = Database._get_all_tags (self._db)
396 raise NotmuchError(STATUS.NULL_POINTER)
397 return Tags(tags_p, self)
399 def create_query(self, querystring):
400 """Returns a :class:`Query` derived from this database
402 This is a shorthand method for doing::
405 # Automatically frees the Database() when 'q' is deleted
407 q = Database(dbpath).create_query('from:"Biene Maja"')
409 # long version, which is functionally equivalent but will keep the
410 # Database in the 'db' variable around after we delete 'q':
412 db = Database(dbpath)
413 q = Query(db,'from:"Biene Maja"')
415 This function is a python extension and not in the underlying C API.
417 # Raise a NotmuchError if not initialized
418 self._verify_initialized_db()
420 return Query(self, querystring)
423 return "'Notmuch DB " + self.get_path() + "'"
426 """Close and free the notmuch database if needed"""
427 if self._db is not None:
428 nmlib.notmuch_database_close(self._db)
430 def _get_user_default_db(self):
431 """ Reads a user's notmuch config and returns his db location
433 Throws a NotmuchError if it cannot find it"""
434 from ConfigParser import SafeConfigParser
435 config = SafeConfigParser()
436 conf_f = os.getenv('NOTMUCH_CONFIG',
437 os.path.expanduser('~/.notmuch-config'))
439 if not config.has_option('database','path'):
440 raise NotmuchError(message=
441 "No DB path specified and no user default found")
442 return config.get('database','path')
446 """Property returning a pointer to `notmuch_database_t` or `None`
448 This should normally not be needed by a user (and is not yet
449 guaranteed to remain stable in future versions).
453 #------------------------------------------------------------------------------
455 """Represents a search query on an opened :class:`Database`.
457 A query selects and filters a subset of messages from the notmuch
458 database we derive from.
460 Query() provides an instance attribute :attr:`sort`, which
461 contains the sort order (if specified via :meth:`set_sort`) or
464 Technically, it wraps the underlying *notmuch_query_t* struct.
466 .. note:: Do remember that as soon as we tear down this object,
467 all underlying derived objects such as threads,
468 messages, tags etc will be freed by the underlying library
469 as well. Accessing these objects will lead to segfaults and
470 other unexpected behavior. See above for more details.
473 SORT = Enum(['OLDEST_FIRST','NEWEST_FIRST','MESSAGE_ID', 'UNSORTED'])
474 """Constants: Sort order in which to return results"""
476 """notmuch_query_create"""
477 _create = nmlib.notmuch_query_create
478 _create.restype = c_void_p
480 """notmuch_query_search_threads"""
481 _search_threads = nmlib.notmuch_query_search_threads
482 _search_threads.restype = c_void_p
484 """notmuch_query_search_messages"""
485 _search_messages = nmlib.notmuch_query_search_messages
486 _search_messages.restype = c_void_p
489 """notmuch_query_count_messages"""
490 _count_messages = nmlib.notmuch_query_count_messages
491 _count_messages.restype = c_uint
493 def __init__(self, db, querystr):
495 :param db: An open database which we derive the Query from.
496 :type db: :class:`Database`
497 :param querystr: The query string for the message.
503 self.create(db, querystr)
505 def create(self, db, querystr):
506 """Creates a new query derived from a Database
508 This function is utilized by __init__() and usually does not need to
511 :param db: Database to create the query from.
512 :type db: :class:`Database`
513 :param querystr: The query string
516 :exception: :exc:`NotmuchError`
518 * STATUS.NOT_INITIALIZED if db is not inited
519 * STATUS.NULL_POINTER if the query creation failed
523 raise NotmuchError(STATUS.NOT_INITIALIZED)
524 # create reference to parent db to keep it alive
527 # create query, return None if too little mem available
528 query_p = Query._create(db.db_p, querystr)
530 NotmuchError(STATUS.NULL_POINTER)
531 self._query = query_p
533 def set_sort(self, sort):
534 """Set the sort order future results will be delivered in
536 Wraps the underlying *notmuch_query_set_sort* function.
538 :param sort: Sort order (see :attr:`Query.SORT`)
540 :exception: :exc:`NotmuchError` STATUS.NOT_INITIALIZED if query has not
543 if self._query is None:
544 raise NotmuchError(STATUS.NOT_INITIALIZED)
547 nmlib.notmuch_query_set_sort(self._query, sort)
549 def search_threads(self):
550 """Execute a query for threads
552 Execute a query for threads, returning a :class:`Threads` iterator.
553 The returned threads are owned by the query and as such, will only be
554 valid until the Query is deleted.
556 The method sets :attr:`Message.FLAG`\.MATCH for those messages that
557 match the query. The method :meth:`Message.get_flag` allows us
558 to get the value of this flag.
560 Technically, it wraps the underlying
561 *notmuch_query_search_threads* function.
563 :returns: :class:`Threads`
564 :exception: :exc:`NotmuchError`
566 * STATUS.NOT_INITIALIZED if query is not inited
567 * STATUS.NULL_POINTER if search_threads failed
569 if self._query is None:
570 raise NotmuchError(STATUS.NOT_INITIALIZED)
572 threads_p = Query._search_threads(self._query)
574 if threads_p is None:
575 NotmuchError(STATUS.NULL_POINTER)
577 return Threads(threads_p,self)
579 def search_messages(self):
580 """Filter messages according to the query and return
581 :class:`Messages` in the defined sort order
583 Technically, it wraps the underlying
584 *notmuch_query_search_messages* function.
586 :returns: :class:`Messages`
587 :exception: :exc:`NotmuchError`
589 * STATUS.NOT_INITIALIZED if query is not inited
590 * STATUS.NULL_POINTER if search_messages failed
592 if self._query is None:
593 raise NotmuchError(STATUS.NOT_INITIALIZED)
595 msgs_p = Query._search_messages(self._query)
598 NotmuchError(STATUS.NULL_POINTER)
600 return Messages(msgs_p,self)
602 def count_messages(self):
603 """Estimate the number of messages matching the query
605 This function performs a search and returns Xapian's best
606 guess as to the number of matching messages. It is much faster
607 than performing :meth:`search_messages` and counting the
608 result with `len()` (although it always returned the same
609 result in my tests). Technically, it wraps the underlying
610 *notmuch_query_count_messages* function.
612 :returns: :class:`Messages`
613 :exception: :exc:`NotmuchError`
615 * STATUS.NOT_INITIALIZED if query is not inited
617 if self._query is None:
618 raise NotmuchError(STATUS.NOT_INITIALIZED)
620 return Query._count_messages(self._query)
623 """Close and free the Query"""
624 if self._query is not None:
625 nmlib.notmuch_query_destroy (self._query)
628 #------------------------------------------------------------------------------
629 class Directory(object):
630 """Represents a directory entry in the notmuch directory
632 Modifying attributes of this object will modify the
633 database, not the real directory attributes.
635 The Directory object is usually derived from another object
636 e.g. via :meth:`Database.get_directory`, and will automatically be
637 become invalid whenever that parent is deleted. You should
638 therefore initialized this object handing it a reference to the
639 parent, preventing the parent from automatically being garbage
643 """notmuch_directory_get_mtime"""
644 _get_mtime = nmlib.notmuch_directory_get_mtime
645 _get_mtime.restype = c_long
647 """notmuch_directory_set_mtime"""
648 _set_mtime = nmlib.notmuch_directory_set_mtime
649 _set_mtime.argtypes = [c_char_p, c_long]
651 """notmuch_directory_get_child_files"""
652 _get_child_files = nmlib.notmuch_directory_get_child_files
653 _get_child_files.restype = c_void_p
655 """notmuch_directory_get_child_directories"""
656 _get_child_directories = nmlib.notmuch_directory_get_child_directories
657 _get_child_directories.restype = c_void_p
659 def _verify_dir_initialized(self):
660 """Raises a NotmuchError(STATUS.NOT_INITIALIZED) if the dir_p is None"""
661 if self._dir_p is None:
662 raise NotmuchError(STATUS.NOT_INITIALIZED)
664 def __init__(self, path, dir_p, parent):
666 :param path: The absolute path of the directory object.
667 :param dir_p: The pointer to an internal notmuch_directory_t object.
668 :param parent: The object this Directory is derived from
669 (usually a :class:`Database`). We do not directly use
670 this, but store a reference to it as long as
671 this Directory object lives. This keeps the
676 self._parent = parent
679 def set_mtime (self, mtime):
680 """Sets the mtime value of this directory in the database
682 The intention is for the caller to use the mtime to allow efficient
683 identification of new messages to be added to the database. The
684 recommended usage is as follows:
686 * Read the mtime of a directory from the filesystem
688 * Call :meth:`Database.add_message` for all mail files in
691 * Call notmuch_directory_set_mtime with the mtime read from the
692 filesystem. Then, when wanting to check for updates to the
693 directory in the future, the client can call :meth:`get_mtime`
694 and know that it only needs to add files if the mtime of the
695 directory and files are newer than the stored timestamp.
697 .. note:: :meth:`get_mtime` function does not allow the caller
698 to distinguish a timestamp of 0 from a non-existent
699 timestamp. So don't store a timestamp of 0 unless you are
700 comfortable with that.
702 :param mtime: A (time_t) timestamp
703 :returns: Nothing on success, raising an exception on failure.
704 :exception: :exc:`NotmuchError`:
706 STATUS.XAPIAN_EXCEPTION
707 A Xapian exception occurred, mtime not stored.
708 STATUS.READ_ONLY_DATABASE
709 Database was opened in read-only mode so directory
710 mtime cannot be modified.
711 STATUS.NOT_INITIALIZED
712 The directory has not been initialized
714 #Raise a NotmuchError(STATUS.NOT_INITIALIZED) if the dir_p is None
715 self._verify_dir_initialized()
717 #TODO: make sure, we convert the mtime parameter to a 'c_long'
718 status = Directory._set_mtime(self._dir_p, mtime)
721 if status == STATUS.SUCCESS:
723 #fail with Exception otherwise
724 raise NotmuchError(status)
726 def get_mtime (self):
727 """Gets the mtime value of this directory in the database
729 Retrieves a previously stored mtime for this directory.
731 :param mtime: A (time_t) timestamp
732 :returns: Nothing on success, raising an exception on failure.
733 :exception: :exc:`NotmuchError`:
735 STATUS.NOT_INITIALIZED
736 The directory has not been initialized
738 #Raise a NotmuchError(STATUS.NOT_INITIALIZED) if self.dir_p is None
739 self._verify_dir_initialized()
741 return Directory._get_mtime (self._dir_p)
743 # Make mtime attribute a property of Directory()
744 mtime = property(get_mtime, set_mtime, doc="""Property that allows getting
745 and setting of the Directory *mtime* (read-write)
747 See :meth:`get_mtime` and :meth:`set_mtime` for usage and
748 possible exceptions.""")
750 def get_child_files(self):
751 """Gets a Filenames iterator listing all the filenames of
752 messages in the database within the given directory.
754 The returned filenames will be the basename-entries only (not
757 #Raise a NotmuchError(STATUS.NOT_INITIALIZED) if self._dir_p is None
758 self._verify_dir_initialized()
760 files_p = Directory._get_child_files(self._dir_p)
761 return Filenames(files_p, self)
763 def get_child_directories(self):
764 """Gets a :class:`Filenames` iterator listing all the filenames of
765 sub-directories in the database within the given directory
767 The returned filenames will be the basename-entries only (not
770 #Raise a NotmuchError(STATUS.NOT_INITIALIZED) if self._dir_p is None
771 self._verify_dir_initialized()
773 files_p = Directory._get_child_directories(self._dir_p)
774 return Filenames(files_p, self)
778 """Returns the absolute path of this Directory (read-only)"""
782 """Object representation"""
783 return "<notmuch Directory object '%s'>" % self._path
786 """Close and free the Directory"""
787 if self._dir_p is not None:
788 nmlib.notmuch_directory_destroy(self._dir_p)
790 #------------------------------------------------------------------------------
791 class Filenames(object):
792 """An iterator over File- or Directory names that are stored in the database
795 #notmuch_filenames_get
796 _get = nmlib.notmuch_filenames_get
797 _get.restype = c_char_p
799 def __init__(self, files_p, parent):
801 :param files_p: The pointer to an internal notmuch_filenames_t object.
802 :param parent: The object this Directory is derived from
803 (usually a Directory()). We do not directly use
804 this, but store a reference to it as long as
805 this Directory object lives. This keeps the
808 self._files_p = files_p
809 self._parent = parent
812 """ Make Filenames an iterator """
816 if self._files_p is None:
817 raise NotmuchError(STATUS.NOT_INITIALIZED)
819 if not nmlib.notmuch_filenames_valid(self._files_p):
823 file = Filenames._get (self._files_p)
824 nmlib.notmuch_filenames_move_to_next(self._files_p)
828 """len(:class:`Filenames`) returns the number of contained files
830 .. note:: As this iterates over the files, we will not be able to
831 iterate over them again! So this will fail::
834 files = Database().get_directory('').get_child_files()
835 if len(files) > 0: #this 'exhausts' msgs
836 # next line raises NotmuchError(STATUS.NOT_INITIALIZED)!!!
837 for file in files: print file
839 if self._files_p is None:
840 raise NotmuchError(STATUS.NOT_INITIALIZED)
843 while nmlib.notmuch_filenames_valid(self._files_p):
844 nmlib.notmuch_filenames_move_to_next(self._files_p)
850 """Close and free Filenames"""
851 if self._files_p is not None:
852 nmlib.notmuch_filenames_destroy(self._files_p)