"""
import os
-from ctypes import c_int, c_char_p, c_void_p, c_uint, c_long, byref, POINTER
-from notmuch.globals import (nmlib, STATUS, NotmuchError, NotInitializedError,
- NullPointerError, OutOfMemoryError, XapianError, Enum, _str,
- NotmuchDatabaseP, NotmuchDirectoryP, NotmuchMessageP, NotmuchTagsP,
- NotmuchQueryP, NotmuchMessagesP, NotmuchThreadsP, NotmuchFilenamesP)
-from notmuch.thread import Threads
-from notmuch.message import Messages, Message
+import codecs
+from ctypes import c_char_p, c_void_p, c_uint, c_long, byref, POINTER
+from notmuch.globals import (
+ nmlib,
+ STATUS,
+ FileError,
+ NotmuchError,
+ NullPointerError,
+ NotInitializedError,
+ Enum,
+ _str,
+ NotmuchDatabaseP,
+ NotmuchDirectoryP,
+ NotmuchMessageP,
+ NotmuchTagsP,
+ NotmuchFilenamesP
+)
+from notmuch.message import Message
from notmuch.tag import Tags
-
+from .query import Query
class Database(object):
"""The :class:`Database` is the highest-level object that notmuch
:exc:`XapianError` as the underlying database has been
modified. Close and reopen the database to continue working with it.
- .. note:: Any function in this class can and will throw an
- :exc:`NotInitializedError` if the database was not
- intitialized properly.
+ :class:`Database` objects implement the context manager protocol
+ so you can use the :keyword:`with` statement to ensure that the
+ database is properly closed.
+
+ .. note::
+
+ Any function in this class can and will throw an
+ :exc:`NotInitializedError` if the database was not intitialized
+ properly.
- .. note:: Do remember that as soon as we tear down (e.g. via `del
- db`) this object, all underlying derived objects such as
- queries, threads, messages, tags etc will be freed by the
- underlying library as well. Accessing these objects will lead
- to segfaults and other unexpected behavior. See above for
- more details.
+ .. note::
+
+ Do remember that as soon as we tear down (e.g. via `del db`) this
+ object, all underlying derived objects such as queries, threads,
+ messages, tags etc will be freed by the underlying library as well.
+ Accessing these objects will lead to segfaults and other unexpected
+ behavior. See above for more details.
"""
_std_db_path = None
"""Class attribute to cache user's default database"""
:param mode: Mode to open a database in. Is always
:attr:`MODE`.READ_WRITE when creating a new one.
:type mode: :attr:`MODE`
- :exception: :exc:`NotmuchError` or derived exception in case of
+ :raises: :exc:`NotmuchError` or derived exception in case of
failure.
"""
self._db = None
else:
self.create(path)
+ def __del__(self):
+ self.close()
+
def _assert_db_is_initialized(self):
"""Raises :exc:`NotInitializedError` if self._db is `None`"""
- if self._db is None:
+ if not self._db:
raise NotInitializedError()
def create(self, path):
:param path: A directory in which we should create the database.
:type path: str
- :returns: Nothing
- :exception: :exc:`NotmuchError` in case of any failure
+ :raises: :exc:`NotmuchError` in case of any failure
(possibly after printing an error message on stderr).
"""
if self._db is not None:
res = Database._create(_str(path), Database.MODE.READ_WRITE)
- if res is None:
+ if not res:
raise NotmuchError(
message="Could not create the specified database")
self._db = res
:param status: Open the database in read-only or read-write mode
:type status: :attr:`MODE`
- :returns: Nothing
- :exception: Raises :exc:`NotmuchError` in case of any failure
+ :raises: Raises :exc:`NotmuchError` in case of any failure
(possibly after printing an error message on stderr).
"""
res = Database._open(_str(path), mode)
- if res is None:
+ if not res:
raise NotmuchError(message="Could not open the specified database")
self._db = res
+ _close = nmlib.notmuch_database_close
+ _close.argtypes = [NotmuchDatabaseP]
+ _close.restype = None
+
+ def close(self):
+ """Close and free the notmuch database if needed"""
+ if self._db is not None:
+ self._close(self._db)
+ self._db = None
+
+ def __enter__(self):
+ '''
+ Implements the context manager protocol.
+ '''
+ return self
+
+ def __exit__(self, exc_type, exc_value, traceback):
+ '''
+ Implements the context manager protocol.
+ '''
+ self.close()
+
def get_path(self):
"""Returns the file path of an open database"""
self._assert_db_is_initialized()
neither begin nor end necessarily flush modifications to disk.
:returns: :attr:`STATUS`.SUCCESS or raises
-
- :exception: :exc:`NotmuchError`:
- :attr:`STATUS`.XAPIAN_EXCEPTION
- Xapian exception occurred; atomic section not entered.
+ :raises: :exc:`NotmuchError`: :attr:`STATUS`.XAPIAN_EXCEPTION
+ Xapian exception occurred; atomic section not entered.
*Added in notmuch 0.9*"""
self._assert_db_is_initialized()
:returns: :attr:`STATUS`.SUCCESS or raises
- :exception:
+ :raises:
:exc:`NotmuchError`:
:attr:`STATUS`.XAPIAN_EXCEPTION
A Xapian exception occurred; atomic section not
"""Returns a :class:`Directory` of path,
(creating it if it does not exist(?))
- .. warning:: This call needs a writeable database in
- :attr:`Database.MODE`.READ_WRITE mode. The underlying library will
- exit the program if this method is used on a read-only database!
+ .. warning::
+
+ This call needs a writeable database in
+ :attr:`Database.MODE`.READ_WRITE mode. The underlying library will
+ exit the program if this method is used on a read-only database!
:param path: An unicode string containing the path relative to the path
of database (see :meth:`get_path`), or else should be an absolute
path with initial components that match the path of 'database'.
:returns: :class:`Directory` or raises an exception.
- :exception:
+ :raises:
:exc:`NotmuchError` with :attr:`STATUS`.FILE_ERROR
If path is not relative database or absolute with initial
components same as database.
"""
self._assert_db_is_initialized()
# sanity checking if path is valid, and make path absolute
- if path[0] == os.sep:
+ if path and path[0] == os.sep:
# we got an absolute path
if not path.startswith(self.get_path()):
# but its initial components are not equal to the db path
- raise NotmuchError(STATUS.FILE_ERROR,
- message="Database().get_directory() called "
- "with a wrong absolute path.")
+ raise FileError('Database().get_directory() called '
+ 'with a wrong absolute path')
abs_dirpath = path
else:
#we got a relative path, make it absolute
:rtype: 2-tuple(:class:`Message`, :attr:`STATUS`)
- :exception: Raises a :exc:`NotmuchError` with the following meaning.
+ :raises: Raises a :exc:`NotmuchError` with the following meaning.
If such an exception occurs, nothing was added to the database.
:attr:`STATUS`.FILE_ERROR
be added.
"""
self._assert_db_is_initialized()
- msg_p = c_void_p()
+ msg_p = NotmuchMessageP()
status = self._add_message(self._db, _str(filename), byref(msg_p))
if not status in [STATUS.SUCCESS, STATUS.DUPLICATE_MESSAGE_ID]:
This filename was removed but the message persists in the
database with at least one other filename.
- :exception: Raises a :exc:`NotmuchError` with the following meaning.
+ :raises: Raises a :exc:`NotmuchError` with the following meaning.
If such an exception occurs, nothing was removed from the
database.
removed.
"""
self._assert_db_is_initialized()
- return self._remove_message(self._db, filename)
+ return self._remove_message(self._db, _str(filename))
def find_message(self, msgid):
"""Returns a :class:`Message` as identified by its message ID
:param msgid: The message ID
:type msgid: unicode or str
:returns: :class:`Message` or `None` if no message is found.
- :exception:
+ :raises:
:exc:`OutOfMemoryError`
If an Out-of-memory occured while constructing the message.
:exc:`XapianError`
the database was not intitialized.
"""
self._assert_db_is_initialized()
- msg_p = c_void_p()
+ msg_p = NotmuchMessageP()
status = Database._find_message(self._db, _str(msgid), byref(msg_p))
if status != STATUS.SUCCESS:
raise NotmuchError(status)
def find_message_by_filename(self, filename):
"""Find a message with the given filename
- .. warning:: This call needs a writeable database in
- :attr:`Database.MODE`.READ_WRITE mode. The underlying library will
- exit the program if this method is used on a read-only
- database!
+ .. warning::
+
+ This call needs a writeable database in
+ :attr:`Database.MODE`.READ_WRITE mode. The underlying library will
+ exit the program if this method is used on a read-only database!
:returns: If the database contains a message with the given
filename, then a class:`Message:` is returned. This
function returns None if no message is found with the given
filename.
- :exception:
+ :raises:
:exc:`OutOfMemoryError`
If an Out-of-memory occured while constructing the message.
:exc:`XapianError`
*Added in notmuch 0.9*"""
self._assert_db_is_initialized()
- msg_p = c_void_p()
+ msg_p = NotmuchMessageP()
status = Database._find_message_by_filename(self._db, _str(filename),
byref(msg_p))
if status != STATUS.SUCCESS:
self._assert_db_is_initialized()
tags_p = Database._get_all_tags(self._db)
if tags_p == None:
- raise NotmuchError(STATUS.NULL_POINTER)
+ raise NullPointerError()
return Tags(tags_p, self)
def create_query(self, querystring):
def __repr__(self):
return "'Notmuch DB " + self.get_path() + "'"
- _close = nmlib.notmuch_database_close
- _close.argtypes = [NotmuchDatabaseP]
- _close.restype = None
-
- def __del__(self):
- """Close and free the notmuch database if needed"""
- if self._db is not None:
- self._close(self._db)
-
def _get_user_default_db(self):
""" Reads a user's notmuch config and returns his db location
Throws a NotmuchError if it cannot find it"""
- from ConfigParser import SafeConfigParser
+ try:
+ # python3.x
+ from configparser import SafeConfigParser
+ except ImportError:
+ # python2.x
+ from ConfigParser import SafeConfigParser
+
config = SafeConfigParser()
conf_f = os.getenv('NOTMUCH_CONFIG',
os.path.expanduser('~/.notmuch-config'))
- config.read(conf_f)
+ config.readfp(codecs.open(conf_f, 'r', 'utf-8'))
if not config.has_option('database', 'path'):
raise NotmuchError(message="No DB path specified"
" and no user default found")
- return config.get('database', 'path').decode('utf-8')
+ return config.get('database', 'path')
@property
def db_p(self):
return self._db
-class Query(object):
- """Represents a search query on an opened :class:`Database`.
-
- A query selects and filters a subset of messages from the notmuch
- database we derive from.
-
- :class:`Query` provides an instance attribute :attr:`sort`, which
- contains the sort order (if specified via :meth:`set_sort`) or
- `None`.
-
- Any function in this class may throw an :exc:`NotInitializedError`
- in case the underlying query object was not set up correctly.
-
- .. note:: Do remember that as soon as we tear down this object,
- all underlying derived objects such as threads,
- messages, tags etc will be freed by the underlying library
- as well. Accessing these objects will lead to segfaults and
- other unexpected behavior. See above for more details.
- """
- # constants
- SORT = Enum(['OLDEST_FIRST', 'NEWEST_FIRST', 'MESSAGE_ID', 'UNSORTED'])
- """Constants: Sort order in which to return results"""
-
- """notmuch_query_create"""
- _create = nmlib.notmuch_query_create
- _create.argtypes = [NotmuchDatabaseP, c_char_p]
- _create.restype = NotmuchQueryP
-
- """notmuch_query_search_threads"""
- _search_threads = nmlib.notmuch_query_search_threads
- _search_threads.argtypes = [NotmuchQueryP]
- _search_threads.restype = NotmuchThreadsP
-
- """notmuch_query_search_messages"""
- _search_messages = nmlib.notmuch_query_search_messages
- _search_messages.argtypes = [NotmuchQueryP]
- _search_messages.restype = NotmuchMessagesP
-
- """notmuch_query_count_messages"""
- _count_messages = nmlib.notmuch_query_count_messages
- _count_messages.argtypes = [NotmuchQueryP]
- _count_messages.restype = c_uint
-
- def __init__(self, db, querystr):
- """
- :param db: An open database which we derive the Query from.
- :type db: :class:`Database`
- :param querystr: The query string for the message.
- :type querystr: utf-8 encoded str or unicode
- """
- self._db = None
- self._query = None
- self.sort = None
- self.create(db, querystr)
-
- def _assert_query_is_initialized(self):
- """Raises :exc:`NotInitializedError` if self._query is `None`"""
- if self._query is None:
- raise NotInitializedError()
-
- def create(self, db, querystr):
- """Creates a new query derived from a Database
-
- This function is utilized by __init__() and usually does not need to
- be called directly.
-
- :param db: Database to create the query from.
- :type db: :class:`Database`
- :param querystr: The query string
- :type querystr: utf-8 encoded str or unicode
- :returns: Nothing
- :exception:
- :exc:`NullPointerError` if the query creation failed
- (e.g. too little memory).
- :exc:`NotInitializedError` if the underlying db was not
- intitialized.
- """
- db._assert_db_is_initialized()
- # create reference to parent db to keep it alive
- self._db = db
- # create query, return None if too little mem available
- query_p = Query._create(db.db_p, _str(querystr))
- if query_p is None:
- raise NullPointerError
- self._query = query_p
-
- _set_sort = nmlib.notmuch_query_set_sort
- _set_sort.argtypes = [NotmuchQueryP, c_uint]
- _set_sort.argtypes = None
-
- def set_sort(self, sort):
- """Set the sort order future results will be delivered in
-
- :param sort: Sort order (see :attr:`Query.SORT`)
- """
- self._assert_query_is_initialized()
- self.sort = sort
- self._set_sort(self._query, sort)
-
- def search_threads(self):
- """Execute a query for threads
-
- Execute a query for threads, returning a :class:`Threads` iterator.
- The returned threads are owned by the query and as such, will only be
- valid until the Query is deleted.
-
- The method sets :attr:`Message.FLAG`\.MATCH for those messages that
- match the query. The method :meth:`Message.get_flag` allows us
- to get the value of this flag.
-
- :returns: :class:`Threads`
- :exception: :exc:`NullPointerError` if search_threads failed
- """
- self._assert_query_is_initialized()
- threads_p = Query._search_threads(self._query)
-
- if threads_p is None:
- raise NullPointerError
- return Threads(threads_p, self)
-
- def search_messages(self):
- """Filter messages according to the query and return
- :class:`Messages` in the defined sort order
-
- :returns: :class:`Messages`
- :exception: :exc:`NullPointerError` if search_messages failed
- """
- self._assert_query_is_initialized()
- msgs_p = Query._search_messages(self._query)
-
- if msgs_p is None:
- raise NullPointerError
- return Messages(msgs_p, self)
-
- def count_messages(self):
- """Estimate the number of messages matching the query
-
- This function performs a search and returns Xapian's best
- guess as to the number of matching messages. It is much faster
- than performing :meth:`search_messages` and counting the
- result with `len()` (although it always returned the same
- result in my tests). Technically, it wraps the underlying
- *notmuch_query_count_messages* function.
-
- :returns: :class:`Messages`
- """
- self._assert_query_is_initialized()
- return Query._count_messages(self._query)
-
- _destroy = nmlib.notmuch_query_destroy
- _destroy.argtypes = [NotmuchQueryP]
- _destroy.restype = None
-
- def __del__(self):
- """Close and free the Query"""
- if self._query is not None:
- self._destroy(self._query)
-
-
class Directory(object):
"""Represents a directory entry in the notmuch directory
def _assert_dir_is_initialized(self):
"""Raises a NotmuchError(:attr:`STATUS`.NOT_INITIALIZED)
if dir_p is None"""
- if self._dir_p is None:
- raise NotmuchError(STATUS.NOT_INITIALIZED)
+ if not self._dir_p:
+ raise NotInitializedError()
def __init__(self, path, dir_p, parent):
"""
and know that it only needs to add files if the mtime of the
directory and files are newer than the stored timestamp.
- .. note:: :meth:`get_mtime` function does not allow the caller
- to distinguish a timestamp of 0 from a non-existent
- timestamp. So don't store a timestamp of 0 unless you are
- comfortable with that.
+ .. note::
- :param mtime: A (time_t) timestamp
- :returns: Nothing on success, raising an exception on failure.
- :exception: :exc:`NotmuchError`:
+ :meth:`get_mtime` function does not allow the caller to
+ distinguish a timestamp of 0 from a non-existent timestamp. So
+ don't store a timestamp of 0 unless you are comfortable with
+ that.
- :attr:`STATUS`.XAPIAN_EXCEPTION
- A Xapian exception occurred, mtime not stored.
- :attr:`STATUS`.READ_ONLY_DATABASE
- Database was opened in read-only mode so directory
- mtime cannot be modified.
- :attr:`STATUS`.NOT_INITIALIZED
- The directory has not been initialized
+ :param mtime: A (time_t) timestamp
+ :raises: :exc:`XapianError` a Xapian exception occurred, mtime
+ not stored
+ :raises: :exc:`ReadOnlyDatabaseError` the database was opened
+ in read-only mode so directory mtime cannot be modified
+ :raises: :exc:`NotInitializedError` the directory object has not
+ been initialized
"""
self._assert_dir_is_initialized()
- #TODO: make sure, we convert the mtime parameter to a 'c_long'
status = Directory._set_mtime(self._dir_p, mtime)
- #return on success
- if status == STATUS.SUCCESS:
- return
- #fail with Exception otherwise
- raise NotmuchError(status)
+ if status != STATUS.SUCCESS:
+ raise NotmuchError(status)
def get_mtime(self):
"""Gets the mtime value of this directory in the database
Retrieves a previously stored mtime for this directory.
:param mtime: A (time_t) timestamp
- :returns: Nothing on success, raising an exception on failure.
- :exception: :exc:`NotmuchError`:
+ :raises: :exc:`NotmuchError`:
:attr:`STATUS`.NOT_INITIALIZED
The directory has not been initialized
_move_to_next.argtypes = [NotmuchFilenamesP]
_move_to_next.restype = None
- def next(self):
- if self._files_p is None:
- raise NotmuchError(STATUS.NOT_INITIALIZED)
+ def __next__(self):
+ if not self._files_p:
+ raise NotInitializedError()
if not self._valid(self._files_p):
self._files_p = None
raise StopIteration
- file = Filenames._get(self._files_p)
+ file_ = Filenames._get(self._files_p)
self._move_to_next(self._files_p)
- return file
+ return file_.decode('utf-8', 'ignore')
+ next = __next__ # python2.x iterator protocol compatibility
def __len__(self):
"""len(:class:`Filenames`) returns the number of contained files
- .. note:: As this iterates over the files, we will not be able to
- iterate over them again! So this will fail::
+ .. note::
+
+ As this iterates over the files, we will not be able to
+ iterate over them again! So this will fail::
#THIS FAILS
files = Database().get_directory('').get_child_files()
- if len(files) > 0: #this 'exhausts' msgs
- # next line raises NotmuchError(:attr:`STATUS`.NOT_INITIALIZED)!!!
+ if len(files) > 0: # this 'exhausts' msgs
+ # next line raises
+ # NotmuchError(:attr:`STATUS`.NOT_INITIALIZED)
for file in files: print file
"""
- if self._files_p is None:
- raise NotmuchError(STATUS.NOT_INITIALIZED)
+ if not self._files_p:
+ raise NotInitializedError()
i = 0
while self._valid(self._files_p):