mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-12-23 18:04:52 +01:00
docs: doc improvements
This commit is contained in:
Sebastian Spaeth
parent
61bef71a12
commit
d2b4307851
3 changed files with 223 additions and 67 deletions
|
|
@ -48,10 +48,10 @@ class Database(object):
|
|||
:param path: Directory to open/create the database in (see
|
||||
above for behavior if `None`)
|
||||
:type path: `str` or `None`
|
||||
:param create: False to open an existing, True to create a new
|
||||
:param create: Pass `False` to open an existing, `True` to create a new
|
||||
database.
|
||||
:type create: bool
|
||||
:param mode: Mode to open a database in. Always
|
||||
:param mode: Mode to open a database in. Is always
|
||||
:attr:`MODE`.READ_WRITE when creating a new one.
|
||||
:type mode: :attr:`MODE`
|
||||
:returns: Nothing
|
||||
|
|
@ -73,7 +73,7 @@ class Database(object):
|
|||
def create(self, path):
|
||||
"""Creates a new notmuch database
|
||||
|
||||
This function is used by __init__() usually does not need
|
||||
This function is used by __init__() and usually does not need
|
||||
to be called directly. It wraps the underlying
|
||||
*notmuch_database_create* function and creates a new notmuch
|
||||
database at *path*. It will always return a database in
|
||||
|
|
@ -100,14 +100,14 @@ class Database(object):
|
|||
def open(self, path, mode= MODE.READ_ONLY):
|
||||
"""Opens an existing database
|
||||
|
||||
This function is used by __init__() usually does not need
|
||||
This function is used by __init__() and usually does not need
|
||||
to be called directly. It wraps the underlying
|
||||
*notmuch_database_open* function.
|
||||
|
||||
:param status: Open the database in read-only or read-write mode
|
||||
:type status: :attr:`MODE`
|
||||
:returns: Nothing
|
||||
:exception: Raises :exc:`notmuch.NotmuchError` in case
|
||||
:exception: Raises :exc:`NotmuchError` in case
|
||||
of any failure (after printing an error message on stderr).
|
||||
"""
|
||||
|
||||
|
|
@ -127,9 +127,9 @@ class Database(object):
|
|||
def find_message(self, msgid):
|
||||
"""Returns a :class:`Message` as identified by its message ID
|
||||
|
||||
wraps *notmuch_database_find_message*
|
||||
Wraps the underlying *notmuch_database_find_message* function.
|
||||
|
||||
:param msgid: The message id
|
||||
:param msgid: The message ID
|
||||
:type msgid: string
|
||||
:returns: :class:`Message` or `None` if no message is found or if an
|
||||
out-of-memory situation occurs.
|
||||
|
|
@ -146,8 +146,8 @@ class Database(object):
|
|||
def get_all_tags(self):
|
||||
"""Returns :class:`Tags` with a list of all tags found in the database
|
||||
|
||||
:returns: :class:`Tags` object or raises :exc:`NotmuchError` with
|
||||
STATUS.NULL_POINTER on error
|
||||
:returns: :class:`Tags`
|
||||
:execption: :exc:`NotmuchError` with STATUS.NULL_POINTER on error
|
||||
"""
|
||||
if self._db is None:
|
||||
raise NotmuchError(STATUS.NOT_INITIALIZED)
|
||||
|
|
@ -188,15 +188,22 @@ class Database(object):
|
|||
|
||||
#------------------------------------------------------------------------------
|
||||
class Query(object):
|
||||
""" Wrapper around a notmuch_query_t
|
||||
""" Represents a search query on an opened :class:`Database`.
|
||||
|
||||
Do note that as soon as we tear down this object, all derived
|
||||
threads, and messages will be freed as well.
|
||||
A query selects and filters a subset of messages from the notmuch
|
||||
database we derive from.
|
||||
|
||||
Technically, it wraps the underlying *notmuch_query_t* struct.
|
||||
|
||||
.. note:: Do remember that as soon as we tear down 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.
|
||||
"""
|
||||
# constants
|
||||
SORT_OLDEST_FIRST = 0
|
||||
SORT_NEWEST_FIRST = 1
|
||||
SORT_MESSAGE_ID = 2
|
||||
SORT = Enum(['OLDEST_FIRST','NEWEST_FIRST','MESSAGE_ID'])
|
||||
"""Constants: Sort order in which to return results"""
|
||||
|
||||
"""notmuch_query_create"""
|
||||
_create = nmlib.notmuch_query_create
|
||||
|
|
@ -207,16 +214,32 @@ class Query(object):
|
|||
_search_messages.restype = c_void_p
|
||||
|
||||
def __init__(self, db, querystr):
|
||||
"""TODO: document"""
|
||||
"""
|
||||
: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: str
|
||||
"""
|
||||
self._db = None
|
||||
self._query = None
|
||||
self.create(db, querystr)
|
||||
|
||||
def create(self, db, querystr):
|
||||
"""db is a Database() and querystr a string
|
||||
"""Creates a new query derived from a Database.
|
||||
|
||||
raises NotmuchError STATUS.NOT_INITIALIZED if db is not inited and
|
||||
STATUS.NULL_POINTER if the query creation failed (too little memory)
|
||||
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: str
|
||||
:returns: Nothing
|
||||
:exception: :exc:`NotmuchError`
|
||||
|
||||
* STATUS.NOT_INITIALIZED if db is not inited
|
||||
* STATUS.NULL_POINTER if the query creation failed
|
||||
(too little memory)
|
||||
"""
|
||||
if db.db_p is None:
|
||||
raise NotmuchError(STATUS.NOT_INITIALIZED)
|
||||
|
|
@ -230,10 +253,14 @@ class Query(object):
|
|||
self._query = query_p
|
||||
|
||||
def set_sort(self, sort):
|
||||
"""notmuch_query_set_sort
|
||||
"""Set the sort order future results will be delivered in
|
||||
|
||||
:param sort: one of Query.SORT_OLDEST_FIRST|SORT_NEWEST_FIRST|SORT_MESSAGE_ID
|
||||
:returns: Nothing, but raises NotmuchError if query is not inited
|
||||
Wraps the underlying *notmuch_query_set_sort* function.
|
||||
|
||||
:param sort: Sort order (see :attr:`Query.SORT`)
|
||||
:returns: Nothing
|
||||
:exception: :exc:`NotmuchError` STATUS.NOT_INITIALIZED if query has not
|
||||
been initialized.
|
||||
"""
|
||||
if self._query is None:
|
||||
raise NotmuchError(STATUS.NOT_INITIALIZED)
|
||||
|
|
@ -241,8 +268,17 @@ class Query(object):
|
|||
nmlib.notmuch_query_set_sort(self._query, sort)
|
||||
|
||||
def search_messages(self):
|
||||
"""notmuch_query_search_messages
|
||||
Returns Messages() or a raises a NotmuchError()
|
||||
"""Filter messages according to query and return
|
||||
:class:`Messages` in the defined sort order.
|
||||
|
||||
Technically, it wraps the underlying
|
||||
*notmuch_query_search_messages* function.
|
||||
|
||||
:returns: :class:`Messages`
|
||||
:exception: :exc:`NotmuchError`
|
||||
|
||||
* STATUS.NOT_INITIALIZED if query is not inited
|
||||
* STATUS.NULL_POINTER if search_messages failed
|
||||
"""
|
||||
if self._query is None:
|
||||
raise NotmuchError(STATUS.NOT_INITIALIZED)
|
||||
|
|
@ -263,7 +299,30 @@ class Query(object):
|
|||
|
||||
#------------------------------------------------------------------------------
|
||||
class Tags(object):
|
||||
"""Wrapper around notmuch_tags_t"""
|
||||
"""Represents a list of notmuch tags
|
||||
|
||||
This object provides an iterator over a list of notmuch tags. Do
|
||||
note that the underlying library only provides a one-time iterator
|
||||
(it cannot reset the iterator to the start). Thus iterating over
|
||||
the function will "exhaust" the list of tags, and a subsequent
|
||||
iteration attempt will raise a :exc:`NotmuchError`
|
||||
STATUS.NOT_INITIALIZED. Also note, that any function that uses
|
||||
iteration (nearly all) will also exhaust the tags. So both::
|
||||
|
||||
for tag in tags: print tag
|
||||
|
||||
as well as::
|
||||
|
||||
number_of_tags = len(tags)
|
||||
|
||||
and even a simple::
|
||||
|
||||
#str() iterates over all tags to construct a space separated list
|
||||
print(str(tags))
|
||||
|
||||
will "exhaust" the Tags. If you need to re-iterate over a list of
|
||||
tags you will need to retrieve a new :class:`Tags` object.
|
||||
"""
|
||||
|
||||
#notmuch_tags_get
|
||||
_get = nmlib.notmuch_tags_get
|
||||
|
|
@ -271,18 +330,20 @@ class Tags(object):
|
|||
|
||||
def __init__(self, tags_p, parent=None):
|
||||
"""
|
||||
msg_p is a pointer to an notmuch_message_t Structure. If it is None,
|
||||
we will raise an NotmuchError(STATUS.NULL_POINTER).
|
||||
|
||||
Is passed the parent these tags are derived from, and saves a
|
||||
reference to it, so we can automatically delete the db object
|
||||
once all derived objects are dead.
|
||||
|
||||
Tags() provides an iterator over all contained tags. However, you will
|
||||
only be able to iterate over the Tags once, because the underlying C
|
||||
function only allows iterating once.
|
||||
#TODO: make the iterator work more than once and cache the tags in
|
||||
the Python object.
|
||||
:param tags_p: A pointer to an underlying *notmuch_tags_t*
|
||||
structure. These are not publically exposed, so a user
|
||||
will almost never instantiate a :class:`Tags` object
|
||||
herself. They are usually handed back as a result,
|
||||
e.g. in :meth:`Database.get_all_tags`. *tags_p* must be
|
||||
valid, we will raise an :exc:`NotmuchError`
|
||||
(STATUS.NULL_POINTER) if it is `None`.
|
||||
:type tags_p: :class:`ctypes.c_void_p`
|
||||
:param parent: The parent object (ie :class:`Database` or
|
||||
:class:`Message` these tags are derived from, and saves a
|
||||
reference to it, so we can automatically delete the db object
|
||||
once all derived objects are dead.
|
||||
:TODO: Make the iterator optionally work more than once by
|
||||
cache the tags in the Python object(?)
|
||||
"""
|
||||
if tags_p is None:
|
||||
NotmuchError(STATUS.NULL_POINTER)
|
||||
|
|
@ -308,10 +369,33 @@ class Tags(object):
|
|||
nmlib.notmuch_tags_move_to_next(self._tags)
|
||||
return tag
|
||||
|
||||
def __str__(self):
|
||||
"""str() of Tags() is a space separated list of tags
|
||||
def __len__(self):
|
||||
"""len(:class:`Tags`) returns the number of contained tags
|
||||
|
||||
This iterates over the list of Tags and will therefore 'exhaust' Tags()
|
||||
.. note:: As this iterates over the tags, we will not be able
|
||||
to iterate over them again (as in retrieve them)! If
|
||||
the tags have been exhausted already, this will raise a
|
||||
:exc:`NotmuchError` STATUS.NOT_INITIALIZED on
|
||||
subsequent attempts.
|
||||
"""
|
||||
if self._tags is None:
|
||||
raise NotmuchError(STATUS.NOT_INITIALIZED)
|
||||
|
||||
i=0
|
||||
while nmlib.notmuch_tags_valid(self._msgs):
|
||||
nmlib.notmuch_tags_move_to_next(self._msgs)
|
||||
i += 1
|
||||
self._tags = None
|
||||
return i
|
||||
|
||||
def __str__(self):
|
||||
"""The str() representation of Tags() is a space separated list of tags
|
||||
|
||||
.. note:: As this iterates over the tags, we will not be able
|
||||
to iterate over them again (as in retrieve them)! If
|
||||
the tags have been exhausted already, this will raise a
|
||||
:exc:`NotmuchError` STATUS.NOT_INITIALIZED on
|
||||
subsequent attempts.
|
||||
"""
|
||||
return " ".join(self)
|
||||
|
||||
|
|
@ -324,7 +408,52 @@ class Tags(object):
|
|||
|
||||
#------------------------------------------------------------------------------
|
||||
class Messages(object):
|
||||
"""Wrapper around notmuch_messages_t"""
|
||||
"""Represents a list of notmuch messages
|
||||
|
||||
This object provides an iterator over a list of notmuch messages
|
||||
(Technically, it provides a wrapper for the underlying
|
||||
*notmuch_messages_t* structure). Do note that the underlying
|
||||
library only provides a one-time iterator (it cannot reset the
|
||||
iterator to the start). Thus iterating over the function will
|
||||
"exhaust" the list of messages, and a subsequent iteration attempt
|
||||
will raise a :exc:`NotmuchError` STATUS.NOT_INITIALIZED. Also
|
||||
note, that any function that uses iteration will also
|
||||
exhaust the messages. So both::
|
||||
|
||||
for msg in msgs: print msg
|
||||
|
||||
as well as::
|
||||
|
||||
number_of_msgs = len(msgs)
|
||||
|
||||
will "exhaust" the Messages. If you need to re-iterate over a list of
|
||||
messages you will need to retrieve a new :class:`Messages` object.
|
||||
|
||||
Things are not as bad as it seems though, you can store and reuse
|
||||
the single Message objects as often as you want as long as you
|
||||
keep the parent Messages object around. (Recall that due to
|
||||
hierarchical memory allocation, all derived Message objects will
|
||||
be invalid when we delete the parent Messages() object, even if it
|
||||
was already "exhausted".) So this works::
|
||||
|
||||
db = Database()
|
||||
msgs = Query(db,'').search_messages() #get a Messages() object
|
||||
msglist = []
|
||||
for m in msgs:
|
||||
msglist.append(m)
|
||||
|
||||
# msgs is "exhausted" now and even len(msgs) will raise an exception.
|
||||
# However it will be kept around until all retrieved Message() objects are
|
||||
# also deleted. If you did e.g. an explicit del(msgs) here, the
|
||||
# following lines would fail.
|
||||
|
||||
# You can reiterate over *msglist* however as often as you want.
|
||||
# It is simply a list with Message objects.
|
||||
|
||||
print (msglist[0].get_filename())
|
||||
print (msglist[1].get_filename())
|
||||
print (msglist[0].get_message_id())
|
||||
"""
|
||||
|
||||
#notmuch_tags_get
|
||||
_get = nmlib.notmuch_messages_get
|
||||
|
|
@ -335,18 +464,20 @@ class Messages(object):
|
|||
|
||||
def __init__(self, msgs_p, parent=None):
|
||||
"""
|
||||
msg_p is a pointer to an notmuch_messages_t Structure. If it is None,
|
||||
we will raise an NotmuchError(STATUS.NULL_POINTER).
|
||||
|
||||
If passed the parent query this Messages() is derived from, it saves a
|
||||
reference to it, so we can automatically delete the parent query object
|
||||
once all derived objects are dead.
|
||||
|
||||
Messages() provides an iterator over all contained Message()s.
|
||||
However, you will only be able to iterate over it once,
|
||||
because the underlying C function only allows iterating once.
|
||||
#TODO: make the iterator work more than once and cache the tags in
|
||||
the Python object.
|
||||
:param msgs_p: A pointer to an underlying *notmuch_messages_t*
|
||||
structure. These are not publically exposed, so a user
|
||||
will almost never instantiate a :class:`Messages` object
|
||||
herself. They are usually handed back as a result,
|
||||
e.g. in :meth:`Query.search_messages`. *msgs_p* must be
|
||||
valid, we will raise an :exc:`NotmuchError`
|
||||
(STATUS.NULL_POINTER) if it is `None`.
|
||||
:type msgs_p: :class:`ctypes.c_void_p`
|
||||
:param parent: The parent object
|
||||
(ie :class:`Query`) these tags are derived from. It saves
|
||||
a reference to it, so we can automatically delete the db
|
||||
object once all derived objects are dead.
|
||||
:TODO: Make the iterator work more than once and cache the tags in
|
||||
the Python object.(?)
|
||||
"""
|
||||
if msgs_p is None:
|
||||
NotmuchError(STATUS.NULL_POINTER)
|
||||
|
|
@ -357,11 +488,13 @@ class Messages(object):
|
|||
logging.debug("Inited Messages derived from %s" %(str(parent)))
|
||||
|
||||
def collect_tags(self):
|
||||
""" return the Tags() belonging to the messages
|
||||
|
||||
Do note that collect_tags will iterate over the messages and
|
||||
therefore will not allow further iterationsl
|
||||
Raises NotmuchError(STATUS.NOT_INITIALIZED) if not inited
|
||||
"""Return the unique :class:`Tags` in the contained messages
|
||||
|
||||
:returns: :class:`Tags`
|
||||
:exceptions: :exc:`NotmuchError` STATUS.NOT_INITIALIZED if not inited
|
||||
|
||||
.. note:: :meth:`collect_tags` will iterate over the messages and
|
||||
therefore will not allow further iterations.
|
||||
"""
|
||||
if self._msgs is None:
|
||||
raise NotmuchError(STATUS.NOT_INITIALIZED)
|
||||
|
|
@ -392,9 +525,9 @@ class Messages(object):
|
|||
return msg
|
||||
|
||||
def __len__(self):
|
||||
""" Returns the number of contained messages
|
||||
"""len(:class:`Messages`) returns the number of contained messages
|
||||
|
||||
:note: As this iterates over the messages, we will not be able to
|
||||
.. note:: As this iterates over the messages, we will not be able to
|
||||
iterate over them again (as in retrieve them)!
|
||||
"""
|
||||
if self._msgs is None:
|
||||
|
|
|
|||
|
|
@ -1,5 +1,7 @@
|
|||
"""The :mod:`notmuch` module provides most of the functionality that a user is likely to need.
|
||||
|
||||
Many of its objects use python's logging module to log some output at DEBUG level.
|
||||
|
||||
.. note:: The underlying notmuch library is build on a hierarchical
|
||||
memory allocator called talloc. All objects derive from a
|
||||
top-level :class:`Database` object.
|
||||
|
|
|
|||
|
|
@ -62,17 +62,38 @@ or::
|
|||
|
||||
.. autoattribute:: db_p
|
||||
|
||||
:class:`Query` -- Represents a notmuch Query
|
||||
:class:`Query` -- A search query
|
||||
-----------------------------------------------
|
||||
|
||||
.. autoclass:: Query
|
||||
:members:
|
||||
|
||||
.. automethod:: create
|
||||
|
||||
.. attribute:: Query.SORT
|
||||
|
||||
Defines constants that are used as the mode in which to open a database.
|
||||
|
||||
SORT.OLDEST_FIRST
|
||||
Sort by message date, oldest first.
|
||||
|
||||
SORT.NEWEST_FIRST
|
||||
Sort by message date, newest first.
|
||||
|
||||
SORT.MESSAGE_ID
|
||||
Sort by email message ID
|
||||
|
||||
.. automethod:: set_sort
|
||||
|
||||
.. automethod:: search_messages
|
||||
|
||||
:class:`Messages` -- A bunch of messages
|
||||
----------------------------------------
|
||||
|
||||
.. autoclass:: Messages
|
||||
:members:
|
||||
|
||||
.. automethod:: collect_tags
|
||||
|
||||
.. automethod:: __len__
|
||||
|
||||
:class:`Message` -- A single message
|
||||
----------------------------------------
|
||||
|
|
@ -80,15 +101,15 @@ or::
|
|||
.. autoclass:: Message
|
||||
:members:
|
||||
|
||||
:class:`Tags` -- A bunch of notmuch tags
|
||||
----------------------------------------
|
||||
:class:`Tags` -- Notmuch tags
|
||||
-----------------------------
|
||||
|
||||
.. autoclass:: Tags
|
||||
:members:
|
||||
|
||||
.. data: '__notmuchcmd__'
|
||||
.. automethod:: __len__
|
||||
|
||||
This is the actual binary that will be executed in order to run a notmuch command. This is set to *notmuch* and should usually not be changed.
|
||||
.. automethod:: __str__
|
||||
|
||||
:exc:`NotmuchError` -- A Notmuch execution error
|
||||
------------------------------------------------
|
||||
|
|
|
|||
Loading…
Reference in a new issue