X-Git-Url: http://git.kaliko.me/?p=python-musicpd.git;a=blobdiff_plain;f=doc%2Fsource%2Fuse.rst;h=b89db3b1ad647ae6a50fdf5fc838b61b25f56444;hp=a071084fb1650c8095634d9ecafb3bf23196ca19;hb=450aa07f5fd1b92fa53176dc23784482d18686c3;hpb=9148a096c9939a89ecca79578e5fc2590f2dfd6f diff --git a/doc/source/use.rst b/doc/source/use.rst index a071084..b89db3b 100644 --- a/doc/source/use.rst +++ b/doc/source/use.rst @@ -24,6 +24,8 @@ them), and the functions used to parse their responses see :ref:`commands`. See the `MPD protocol documentation`_ for more details. +.. _environment_variables: + Environment variables --------------------- @@ -38,14 +40,33 @@ The client honors the following environment variables: * ``MPD_TIMEOUT`` timeout for connecting to MPD and waiting for MPD’s response in seconds * ``XDG_RUNTIME_DIR`` path to look for potential socket: ``${XDG_RUNTIME_DIR}/mpd/socket`` -Defaults settings ------------------ +.. _default_settings: + +Default settings +---------------- * If ``MPD_HOST`` is not set, then look for a socket in ``${XDG_RUNTIME_DIR}/mpd/socket`` * If there is no socket use ``localhost`` * If ``MPD_PORT`` is not set, then use ``6600`` * If ``MPD_TIMEOUT`` is not set, then uses :py:obj:`musicpd.CONNECTION_TIMEOUT` + +Context manager +--------------- + +Calling MPDClient in a context manager :py:obj:`musicpd.MPDClient.connect` is +transparently called with :ref:`default setting` (use +:ref:`environment variables` to override defaults). +Leaving the context manager :py:obj:`musicpd.MPDClient.disconnect` is called. + +.. code-block:: python + + import os + os.environ['MPD_HOST'] = 'mpdhost' + with MPDClient() as c: + c.status() + c.next() + Command lists ------------- @@ -101,7 +122,7 @@ Idle prefixed commands ---------------------- Each command have a *send\_* and a *fetch\_* variant, which allows to -send a MPD command and then fetch the result later. +send a MPD command and then fetch the result later (non-blocking call). This is useful for the idle command: .. code-block:: python @@ -122,6 +143,8 @@ This is useful for the idle command: >>> gobject.io_add_watch(client, gobject.IO_IN, callback) >>> gobject.MainLoop().run() +See also use of :ref:`socket timeout` with idle command. + Fetching binary content (cover art) ----------------------------------- @@ -172,6 +195,8 @@ You can also use `readpicture` command to fetch embedded picture: Refer to `MPD protocol documentation`_ for the meaning of `binary`, `size` and `data`. +.. _socket_timeout: + Socket timeout -------------- @@ -236,7 +261,7 @@ Some explanations: All three commands in the while loop (send_idle, fetch_idle, noidle) are not triggering a socket timeout unless the connection is actually lost (actually it -could also be that MPD took to much time to answer, but MPD taking more than a +could also be that MPD took too much time to answer, but MPD taking more than a couple of seconds for these commands should never occur).