python: refactor the python bindings

Move the Directory class into its own file, merge the two Filenames
classes into one, deprecate Filenames.as_iterator, update the
documentation accordingly.

Signed-off-by: Justus Winter <4winter@informatik.uni-hamburg.de>

1 files changed, 2 insertions, 237 deletions

diff --git a/bindings/python/notmuch/database.py b/bindings/python/notmuch/database.py
index a054be7..800264b 100644
--- a/bindings/python/notmuch/database.py
+++ b/bindings/python/notmuch/database.py
@@ -19,7 +19,7 @@ Copyright 2010 Sebastian Spaeth <Sebastian@SSpaeth.de>'
 
 import os
 import codecs
-from ctypes import c_char_p, c_void_p, c_uint, c_long, byref, POINTER
+from ctypes import c_char_p, c_void_p, c_uint, byref, POINTER
 from notmuch.globals import (
     nmlib,
     STATUS,
@@ -34,11 +34,11 @@ from notmuch.globals import (
     NotmuchDirectoryP,
     NotmuchMessageP,
     NotmuchTagsP,
-    NotmuchFilenamesP
 )
 from notmuch.message import Message
 from notmuch.tag import Tags
 from .query import Query
+from .directory import Directory
 
 class Database(object):
     """The :class:`Database` is the highest-level object that notmuch
@@ -603,238 +603,3 @@ class Database(object):
         guaranteed to remain stable in future versions).
         """
         return self._db
-
-
-class Directory(object):
-    """Represents a directory entry in the notmuch directory
-
-    Modifying attributes of this object will modify the
-    database, not the real directory attributes.
-
-    The Directory object is usually derived from another object
-    e.g. via :meth:`Database.get_directory`, and will automatically be
-    become invalid whenever that parent is deleted. You should
-    therefore initialized this object handing it a reference to the
-    parent, preventing the parent from automatically being garbage
-    collected.
-    """
-
-    """notmuch_directory_get_mtime"""
-    _get_mtime = nmlib.notmuch_directory_get_mtime
-    _get_mtime.argtypes = [NotmuchDirectoryP]
-    _get_mtime.restype = c_long
-
-    """notmuch_directory_set_mtime"""
-    _set_mtime = nmlib.notmuch_directory_set_mtime
-    _set_mtime.argtypes = [NotmuchDirectoryP, c_long]
-    _set_mtime.restype = c_uint
-
-    """notmuch_directory_get_child_files"""
-    _get_child_files = nmlib.notmuch_directory_get_child_files
-    _get_child_files.argtypes = [NotmuchDirectoryP]
-    _get_child_files.restype = NotmuchFilenamesP
-
-    """notmuch_directory_get_child_directories"""
-    _get_child_directories = nmlib.notmuch_directory_get_child_directories
-    _get_child_directories.argtypes = [NotmuchDirectoryP]
-    _get_child_directories.restype = NotmuchFilenamesP
-
-    def _assert_dir_is_initialized(self):
-        """Raises a NotmuchError(:attr:`STATUS`.NOT_INITIALIZED)
-        if dir_p is None"""
-        if not self._dir_p:
-            raise NotInitializedError()
-
-    def __init__(self, path, dir_p, parent):
-        """
-        :param path:   The absolute path of the directory object.
-        :param dir_p:  The pointer to an internal notmuch_directory_t object.
-        :param parent: The object this Directory is derived from
-                       (usually a :class:`Database`). We do not directly use
-                       this, but store a reference to it as long as
-                       this Directory object lives. This keeps the
-                       parent object alive.
-        """
-        self._path = path
-        self._dir_p = dir_p
-        self._parent = parent
-
-    def set_mtime(self, mtime):
-        """Sets the mtime value of this directory in the database
-
-        The intention is for the caller to use the mtime to allow efficient
-        identification of new messages to be added to the database. The
-        recommended usage is as follows:
-
-        * Read the mtime of a directory from the filesystem
-
-        * Call :meth:`Database.add_message` for all mail files in
-          the directory
-
-        * Call notmuch_directory_set_mtime with the mtime read from the
-          filesystem.  Then, when wanting to check for updates to the
-          directory in the future, the client can call :meth:`get_mtime`
-          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.
-
-        :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()
-        status = Directory._set_mtime(self._dir_p, mtime)
-
-        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
-        :raises: :exc:`NotmuchError`:
-
-                        :attr:`STATUS`.NOT_INITIALIZED
-                          The directory has not been initialized
-        """
-        self._assert_dir_is_initialized()
-        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
-                     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.
-        """
-        self._assert_dir_is_initialized()
-        files_p = Directory._get_child_files(self._dir_p)
-        return Filenames(files_p, self)
-
-    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.
-        """
-        self._assert_dir_is_initialized()
-        files_p = Directory._get_child_directories(self._dir_p)
-        return Filenames(files_p, self)
-
-    @property
-    def path(self):
-        """Returns the absolute path of this Directory (read-only)"""
-        return self._path
-
-    def __repr__(self):
-        """Object representation"""
-        return "<notmuch Directory object '%s'>" % self._path
-
-    _destroy = nmlib.notmuch_directory_destroy
-    _destroy.argtypes = [NotmuchDirectoryP]
-    _destroy.argtypes = None
-
-    def __del__(self):
-        """Close and free the Directory"""
-        if self._dir_p is not None:
-            self._destroy(self._dir_p)
-
-
-class Filenames(object):
-    """An iterator over File- or Directory names stored in the database"""
-
-    #notmuch_filenames_get
-    _get = nmlib.notmuch_filenames_get
-    _get.argtypes = [NotmuchFilenamesP]
-    _get.restype = c_char_p
-
-    def __init__(self, files_p, parent):
-        """
-        :param files_p: The pointer to an internal notmuch_filenames_t object.
-        :param parent: The object this Directory is derived from
-                       (usually a Directory()). We do not directly use
-                       this, but store a reference to it as long as
-                       this Directory object lives. This keeps the
-                       parent object alive.
-        """
-        self._files_p = files_p
-        self._parent = parent
-
-    def __iter__(self):
-        """ Make Filenames an iterator """
-        return self
-
-    _valid = nmlib.notmuch_filenames_valid
-    _valid.argtypes = [NotmuchFilenamesP]
-    _valid.restype = bool
-
-    _move_to_next = nmlib.notmuch_filenames_move_to_next
-    _move_to_next.argtypes = [NotmuchFilenamesP]
-    _move_to_next.restype = None
-
-    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)
-        self._move_to_next(self._files_p)
-        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::
-
-                 #THIS FAILS
-                 files = Database().get_directory('').get_child_files()
-                 if len(files) > 0:  # this 'exhausts' msgs
-                     # next line raises
-                     # NotmuchError(:attr:`STATUS`.NOT_INITIALIZED)
-                     for file in files: print file
-        """
-        if not self._files_p:
-            raise NotInitializedError()
-
-        i = 0
-        while self._valid(self._files_p):
-            self._move_to_next(self._files_p)
-            i += 1
-        self._files_p = None
-        return i
-
-    _destroy = nmlib.notmuch_filenames_destroy
-    _destroy.argtypes = [NotmuchFilenamesP]
-    _destroy.restype = None
-
-    def __del__(self):
-        """Close and free Filenames"""
-        if self._files_p is not None:
-            self._destroy(self._files_p)