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python: pep8 compliance for database.py
This commit is contained in:
pazz
Sebastian Spaeth
parent
61f0184707
commit
e69e30edd7
1 changed files with 80 additions and 80 deletions
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@ -24,6 +24,7 @@ from notmuch.thread import Threads
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from notmuch.message import Messages, Message
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from notmuch.tag import Tags
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class Database(object):
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"""Represents a notmuch database (wraps notmuch_database_t)
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@ -36,7 +37,7 @@ class Database(object):
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_std_db_path = None
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"""Class attribute to cache user's default database"""
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MODE = Enum(['READ_ONLY','READ_WRITE'])
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MODE = Enum(['READ_ONLY', 'READ_WRITE'])
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"""Constants: Mode in which to open the database"""
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"""notmuch_database_get_directory"""
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@ -52,7 +53,7 @@ class Database(object):
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_get_version.restype = c_uint
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"""notmuch_database_open"""
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_open = nmlib.notmuch_database_open
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_open = nmlib.notmuch_database_open
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_open.restype = c_void_p
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"""notmuch_database_upgrade"""
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@ -71,9 +72,9 @@ class Database(object):
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_create = nmlib.notmuch_database_create
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_create.restype = c_void_p
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def __init__(self, path=None, create=False, mode= 0):
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"""If *path* is `None`, we will try to read a users notmuch
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configuration and use his configured database. The location of the
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def __init__(self, path=None, create=False, mode=0):
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"""If *path* is `None`, we will try to read a users notmuch
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configuration and use his configured database. The location of the
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configuration file can be specified through the environment variable
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*NOTMUCH_CONFIG*, falling back to the default `~/.notmuch-config`.
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@ -84,9 +85,9 @@ class Database(object):
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above for behavior if `None`)
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:type path: `str` or `None`
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:param create: Pass `False` to open an existing, `True` to create a new
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database.
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database.
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:type create: bool
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:param mode: Mode to open a database in. Is always
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:param mode: Mode to open a database in. Is always
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:attr:`MODE`.READ_WRITE when creating a new one.
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:type mode: :attr:`MODE`
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:returns: Nothing
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@ -100,7 +101,7 @@ class Database(object):
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Database._std_db_path = self._get_user_default_db()
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path = Database._std_db_path
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assert isinstance(path, basestring), 'Path needs to be a string or None.'
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assert isinstance(path, basestring), 'Path must be a string or None.'
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if create == False:
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self.open(path, mode)
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else:
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@ -109,7 +110,7 @@ class Database(object):
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def _verify_initialized_db(self):
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"""Raises a NotmuchError in case self._db is still None"""
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if self._db is None:
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raise NotmuchError(STATUS.NOT_INITIALIZED)
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raise NotmuchError(STATUS.NOT_INITIALIZED)
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def create(self, path):
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"""Creates a new notmuch database
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@ -128,8 +129,8 @@ class Database(object):
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(after printing an error message on stderr).
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"""
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if self._db is not None:
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raise NotmuchError(
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message="Cannot create db, this Database() already has an open one.")
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raise NotmuchError(message="Cannot create db, this Database() "
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"already has an open one.")
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res = Database._create(path, Database.MODE.READ_WRITE)
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@ -138,7 +139,7 @@ class Database(object):
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message="Could not create the specified database")
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self._db = res
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def open(self, path, mode= 0):
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def open(self, path, mode=0):
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"""Opens an existing database
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This function is used by __init__() and usually does not need
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@ -146,7 +147,7 @@ class Database(object):
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*notmuch_database_open* function.
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:param status: Open the database in read-only or read-write mode
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:type status: :attr:`MODE`
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:type status: :attr:`MODE`
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:returns: Nothing
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:exception: Raises :exc:`NotmuchError` in case
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of any failure (after printing an error message on stderr).
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@ -178,7 +179,7 @@ class Database(object):
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# Raise a NotmuchError if not initialized
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self._verify_initialized_db()
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return Database._get_version (self._db)
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return Database._get_version(self._db)
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def needs_upgrade(self):
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"""Does this database need to be upgraded before writing to it?
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@ -195,7 +196,7 @@ class Database(object):
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# Raise a NotmuchError if not initialized
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self._verify_initialized_db()
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return nmlib.notmuch_database_needs_upgrade(self._db)
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return nmlib.notmuch_database_needs_upgrade(self._db)
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def upgrade(self):
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"""Upgrades the current database
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@ -207,7 +208,7 @@ class Database(object):
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NOT IMPLEMENTED: The optional progress_notify callback can be
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used by the caller to provide progress indication to the
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user. If non-NULL it will be called periodically with
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'progress' as a floating-point value in the range of [0.0..1.0]
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'progress' as a floating-point value in the range of [0.0..1.0]
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indicating the progress made so far in the upgrade process.
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:TODO: catch exceptions, document return values and etc...
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@ -215,15 +216,15 @@ class Database(object):
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# Raise a NotmuchError if not initialized
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self._verify_initialized_db()
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status = Database._upgrade (self._db, None, None)
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status = Database._upgrade(self._db, None, None)
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#TODO: catch exceptions, document return values and etc
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return status
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def get_directory(self, path):
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"""Returns a :class:`Directory` of path,
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"""Returns a :class:`Directory` of path,
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(creating it if it does not exist(?))
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.. warning:: This call needs a writeable database in
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.. warning:: This call needs a writeable database in
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Database.MODE.READ_WRITE mode. The underlying library will exit the
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program if this method is used on a read-only database!
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@ -233,11 +234,11 @@ class Database(object):
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:returns: :class:`Directory` or raises an exception.
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:exception: :exc:`NotmuchError`
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STATUS.NOT_INITIALIZED
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STATUS.NOT_INITIALIZED
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If the database was not intitialized.
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STATUS.FILE_ERROR
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If path is not relative database or absolute with initial
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If path is not relative database or absolute with initial
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components same as database.
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"""
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@ -249,14 +250,15 @@ class Database(object):
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# we got an absolute path
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if not path.startswith(self.get_path()):
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# but its initial components are not equal to the db path
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raise NotmuchError(STATUS.FILE_ERROR,
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message="Database().get_directory() called with a wrong absolute path.")
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raise NotmuchError(STATUS.FILE_ERROR,
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message="Database().get_directory() called "
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"with a wrong absolute path.")
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abs_dirpath = path
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else:
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#we got a relative path, make it absolute
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abs_dirpath = os.path.abspath(os.path.join(self.get_path(),path))
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abs_dirpath = os.path.abspath(os.path.join(self.get_path(), path))
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dir_p = Database._get_directory(self._db, path);
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dir_p = Database._get_directory(self._db, path)
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# return the Directory, init it with the absolute path
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return Directory(abs_dirpath, dir_p, self)
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@ -281,7 +283,7 @@ class Database(object):
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API. You might want to look into the underlying method
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:meth:`Message.maildir_flags_to_tags`.
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:returns: On success, we return
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:returns: On success, we return
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1) a :class:`Message` object that can be used for things
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such as adding tags to the just-added message.
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@ -300,10 +302,11 @@ class Database(object):
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If such an exception occurs, nothing was added to the database.
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STATUS.FILE_ERROR
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An error occurred trying to open the file, (such as
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An error occurred trying to open the file, (such as
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permission denied, or file not found, etc.).
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STATUS.FILE_NOT_EMAIL
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The contents of filename don't look like an email message.
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The contents of filename don't look like an email
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message.
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STATUS.READ_ONLY_DATABASE
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Database was opened in read-only mode so no message can
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be added.
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@ -317,7 +320,7 @@ class Database(object):
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status = nmlib.notmuch_database_add_message(self._db,
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filename,
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byref(msg_p))
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if not status in [STATUS.SUCCESS, STATUS.DUPLICATE_MESSAGE_ID]:
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raise NotmuchError(status)
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@ -341,17 +344,18 @@ class Database(object):
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:returns: A STATUS value with the following meaning:
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STATUS.SUCCESS
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The last filename was removed and the message was removed
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The last filename was removed and the message was removed
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from the database.
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STATUS.DUPLICATE_MESSAGE_ID
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This filename was removed but the message persists in the
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This filename was removed but the message persists in the
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database with at least one other filename.
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:exception: Raises a :exc:`NotmuchError` with the following meaning.
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If such an exception occurs, nothing was removed from the database.
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If such an exception occurs, nothing was removed from the
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database.
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STATUS.READ_ONLY_DATABASE
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Database was opened in read-only mode so no message can be
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Database was opened in read-only mode so no message can be
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removed.
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STATUS.NOT_INITIALIZED
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The database has not been initialized.
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@ -374,8 +378,8 @@ class Database(object):
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occurs. Do note that Xapian Exceptions include
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"Database modified" situations, e.g. when the
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notmuch database has been modified by
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another program in the meantime. A return value of
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`None` is therefore no guarantee that the message
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another program in the meantime. A return value of
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`None` is therefore no guarantee that the message
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does not exist.
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:exception: :exc:`NotmuchError` with STATUS.NOT_INITIALIZED if
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the database was not intitialized.
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@ -397,7 +401,7 @@ class Database(object):
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# Raise a NotmuchError if not initialized
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self._verify_initialized_db()
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tags_p = Database._get_all_tags (self._db)
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tags_p = Database._get_all_tags(self._db)
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if tags_p == None:
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raise NotmuchError(STATUS.NULL_POINTER)
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return Tags(tags_p, self)
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@ -442,10 +446,10 @@ class Database(object):
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conf_f = os.getenv('NOTMUCH_CONFIG',
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os.path.expanduser('~/.notmuch-config'))
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config.read(conf_f)
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if not config.has_option('database','path'):
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raise NotmuchError(message=
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"No DB path specified and no user default found")
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return config.get('database','path')
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if not config.has_option('database', 'path'):
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raise NotmuchError(message="No DB path specified"
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" and no user default found")
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return config.get('database', 'path')
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@property
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def db_p(self):
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@ -456,7 +460,7 @@ class Database(object):
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"""
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return self._db
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#------------------------------------------------------------------------------
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class Query(object):
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"""Represents a search query on an opened :class:`Database`.
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@ -476,7 +480,7 @@ class Query(object):
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other unexpected behavior. See above for more details.
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"""
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# constants
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SORT = Enum(['OLDEST_FIRST','NEWEST_FIRST','MESSAGE_ID', 'UNSORTED'])
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SORT = Enum(['OLDEST_FIRST', 'NEWEST_FIRST', 'MESSAGE_ID', 'UNSORTED'])
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"""Constants: Sort order in which to return results"""
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"""notmuch_query_create"""
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@ -491,7 +495,6 @@ class Query(object):
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_search_messages = nmlib.notmuch_query_search_messages
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_search_messages.restype = c_void_p
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"""notmuch_query_count_messages"""
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_count_messages = nmlib.notmuch_query_count_messages
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_count_messages.restype = c_uint
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@ -511,7 +514,7 @@ class Query(object):
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def create(self, db, querystr):
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"""Creates a new query derived from a Database
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This function is utilized by __init__() and usually does not need to
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This function is utilized by __init__() and usually does not need to
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be called directly.
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:param db: Database to create the query from.
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@ -522,11 +525,11 @@ class Query(object):
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:exception: :exc:`NotmuchError`
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* STATUS.NOT_INITIALIZED if db is not inited
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* STATUS.NULL_POINTER if the query creation failed
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* STATUS.NULL_POINTER if the query creation failed
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(too little memory)
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"""
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if db.db_p is None:
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raise NotmuchError(STATUS.NOT_INITIALIZED)
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raise NotmuchError(STATUS.NOT_INITIALIZED)
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# create reference to parent db to keep it alive
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self._db = db
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if isinstance(querystr, unicode):
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@ -545,7 +548,7 @@ class Query(object):
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:param sort: Sort order (see :attr:`Query.SORT`)
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:returns: Nothing
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:exception: :exc:`NotmuchError` STATUS.NOT_INITIALIZED if query has not
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:exception: :exc:`NotmuchError` STATUS.NOT_INITIALIZED if query has not
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been initialized.
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"""
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if self._query is None:
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@ -558,7 +561,7 @@ class Query(object):
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"""Execute a query for threads
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Execute a query for threads, returning a :class:`Threads` iterator.
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The returned threads are owned by the query and as such, will only be
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The returned threads are owned by the query and as such, will only be
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valid until the Query is deleted.
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The method sets :attr:`Message.FLAG`\.MATCH for those messages that
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@ -572,17 +575,17 @@ class Query(object):
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:exception: :exc:`NotmuchError`
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* STATUS.NOT_INITIALIZED if query is not inited
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* STATUS.NULL_POINTER if search_threads failed
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* STATUS.NULL_POINTER if search_threads failed
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"""
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if self._query is None:
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raise NotmuchError(STATUS.NOT_INITIALIZED)
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raise NotmuchError(STATUS.NOT_INITIALIZED)
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threads_p = Query._search_threads(self._query)
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if threads_p is None:
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raise NotmuchError(STATUS.NULL_POINTER)
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return Threads(threads_p,self)
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return Threads(threads_p, self)
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def search_messages(self):
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"""Filter messages according to the query and return
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@ -595,17 +598,17 @@ class Query(object):
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:exception: :exc:`NotmuchError`
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* STATUS.NOT_INITIALIZED if query is not inited
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* STATUS.NULL_POINTER if search_messages failed
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* STATUS.NULL_POINTER if search_messages failed
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"""
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if self._query is None:
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raise NotmuchError(STATUS.NOT_INITIALIZED)
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raise NotmuchError(STATUS.NOT_INITIALIZED)
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msgs_p = Query._search_messages(self._query)
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if msgs_p is None:
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NotmuchError(STATUS.NULL_POINTER)
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return Messages(msgs_p,self)
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return Messages(msgs_p, self)
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def count_messages(self):
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"""Estimate the number of messages matching the query
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@ -623,17 +626,16 @@ class Query(object):
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* STATUS.NOT_INITIALIZED if query is not inited
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"""
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if self._query is None:
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raise NotmuchError(STATUS.NOT_INITIALIZED)
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raise NotmuchError(STATUS.NOT_INITIALIZED)
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return Query._count_messages(self._query)
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def __del__(self):
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"""Close and free the Query"""
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if self._query is not None:
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nmlib.notmuch_query_destroy (self._query)
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nmlib.notmuch_query_destroy(self._query)
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#------------------------------------------------------------------------------
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class Directory(object):
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"""Represents a directory entry in the notmuch directory
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@ -665,9 +667,9 @@ class Directory(object):
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_get_child_directories.restype = c_void_p
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def _verify_dir_initialized(self):
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"""Raises a NotmuchError(STATUS.NOT_INITIALIZED) if the dir_p is None"""
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"""Raises a NotmuchError(STATUS.NOT_INITIALIZED) if dir_p is None"""
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if self._dir_p is None:
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raise NotmuchError(STATUS.NOT_INITIALIZED)
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raise NotmuchError(STATUS.NOT_INITIALIZED)
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def __init__(self, path, dir_p, parent):
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"""
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@ -683,8 +685,7 @@ class Directory(object):
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self._dir_p = dir_p
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self._parent = parent
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def set_mtime (self, mtime):
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def set_mtime(self, mtime):
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"""Sets the mtime value of this directory in the database
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The intention is for the caller to use the mtime to allow efficient
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@ -692,29 +693,29 @@ class Directory(object):
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recommended usage is as follows:
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* Read the mtime of a directory from the filesystem
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* Call :meth:`Database.add_message` for all mail files in
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the directory
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* Call notmuch_directory_set_mtime with the mtime read from the
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* Call notmuch_directory_set_mtime with the mtime read from the
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filesystem. Then, when wanting to check for updates to the
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directory in the future, the client can call :meth:`get_mtime`
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and know that it only needs to add files if the mtime of the
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and know that it only needs to add files if the mtime of the
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directory and files are newer than the stored timestamp.
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.. note:: :meth:`get_mtime` function does not allow the caller
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.. note:: :meth:`get_mtime` function does not allow the caller
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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.
|
||||
comfortable with that.
|
||||
|
||||
:param mtime: A (time_t) timestamp
|
||||
:param mtime: A (time_t) timestamp
|
||||
:returns: Nothing on success, raising an exception on failure.
|
||||
:exception: :exc:`NotmuchError`:
|
||||
|
||||
STATUS.XAPIAN_EXCEPTION
|
||||
A Xapian exception occurred, mtime not stored.
|
||||
STATUS.READ_ONLY_DATABASE
|
||||
Database was opened in read-only mode so directory
|
||||
Database was opened in read-only mode so directory
|
||||
mtime cannot be modified.
|
||||
STATUS.NOT_INITIALIZED
|
||||
The directory has not been initialized
|
||||
|
|
@ -731,12 +732,12 @@ class Directory(object):
|
|||
#fail with Exception otherwise
|
||||
raise NotmuchError(status)
|
||||
|
||||
def get_mtime (self):
|
||||
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
|
||||
:param mtime: A (time_t) timestamp
|
||||
:returns: Nothing on success, raising an exception on failure.
|
||||
:exception: :exc:`NotmuchError`:
|
||||
|
||||
|
|
@ -746,19 +747,19 @@ class Directory(object):
|
|||
#Raise a NotmuchError(STATUS.NOT_INITIALIZED) if self.dir_p is None
|
||||
self._verify_dir_initialized()
|
||||
|
||||
return Directory._get_mtime (self._dir_p)
|
||||
return Directory._get_mtime(self._dir_p)
|
||||
|
||||
# Make mtime attribute a property of Directory()
|
||||
mtime = property(get_mtime, set_mtime, doc="""Property that allows getting
|
||||
and setting of the Directory *mtime* (read-write)
|
||||
|
||||
See :meth:`get_mtime` and :meth:`set_mtime` for usage and
|
||||
See :meth:`get_mtime` and :meth:`set_mtime` for usage and
|
||||
possible exceptions.""")
|
||||
|
||||
def get_child_files(self):
|
||||
"""Gets a Filenames iterator listing all the filenames of
|
||||
messages in the database within the given directory.
|
||||
|
||||
|
||||
The returned filenames will be the basename-entries only (not
|
||||
complete paths.
|
||||
"""
|
||||
|
|
@ -771,7 +772,7 @@ class Directory(object):
|
|||
def get_child_directories(self):
|
||||
"""Gets a :class:`Filenames` iterator listing all the filenames of
|
||||
sub-directories in the database within the given directory
|
||||
|
||||
|
||||
The returned filenames will be the basename-entries only (not
|
||||
complete paths.
|
||||
"""
|
||||
|
|
@ -795,10 +796,9 @@ class Directory(object):
|
|||
if self._dir_p is not None:
|
||||
nmlib.notmuch_directory_destroy(self._dir_p)
|
||||
|
||||
#------------------------------------------------------------------------------
|
||||
|
||||
class Filenames(object):
|
||||
"""An iterator over File- or Directory names that are stored in the database
|
||||
"""
|
||||
"""An iterator over File- or Directory names stored in the database"""
|
||||
|
||||
#notmuch_filenames_get
|
||||
_get = nmlib.notmuch_filenames_get
|
||||
|
|
@ -828,14 +828,14 @@ class Filenames(object):
|
|||
self._files_p = None
|
||||
raise StopIteration
|
||||
|
||||
file = Filenames._get (self._files_p)
|
||||
file = Filenames._get(self._files_p)
|
||||
nmlib.notmuch_filenames_move_to_next(self._files_p)
|
||||
return file
|
||||
|
||||
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
|
||||
.. note:: As this iterates over the files, we will not be able to
|
||||
iterate over them again! So this will fail::
|
||||
|
||||
#THIS FAILS
|
||||
|
|
@ -847,7 +847,7 @@ class Filenames(object):
|
|||
if self._files_p is None:
|
||||
raise NotmuchError(STATUS.NOT_INITIALIZED)
|
||||
|
||||
i=0
|
||||
i = 0
|
||||
while nmlib.notmuch_filenames_valid(self._files_p):
|
||||
nmlib.notmuch_filenames_move_to_next(self._files_p)
|
||||
i += 1
|
||||
|
|
|
|||
Loading…
Reference in a new issue