beets/docs/plugins/zero.rst
2016-12-26 12:10:19 -06:00

51 lines
2 KiB
ReStructuredText

Zero Plugin
===========
The ``zero`` plugin allows you to null fields in files' metadata tags. Fields
can be nulled unconditionally or conditioned on a pattern match. For example,
the plugin can strip useless comments like "ripped by MyGreatRipper."
The plugin can work in one of two modes. The first mode, the default, is a
blacklist, where you choose the tags you want to remove. The second mode is a
whitelist, where you instead specify the tags you want to keep.
To use the ``zero`` plugin, enable the plugin in your configuration
(see :ref:`using-plugins`).
Configuration
-------------
Make a ``zero:`` section in your configuration file. You can specify the
fields to nullify and the conditions for nullifying them:
* Set ``auto`` to ``yes`` to null fields automatically on import. Default ``yes``
* Set ``fields`` to a whitespace-separated list of fields to change. You can
get the list of all available fields by running ``beet fields``. In
addition, the ``images`` field allows you to remove any images
embedded in the media file.
* Set ``keep_fields`` to *invert* the logic of the plugin. Only these fields
will be kept; other fields will be removed. Remember to set only
``fields`` or ``keep_fields``---not both!
* To conditionally filter a field, use ``field: [regexp, regexp]`` to specify
regular expressions.
* By default this plugin only affects files' tags ; the beets database is left
unchanged. To update the tags in the database, set the ``update_database`` option.
For example::
zero:
fields: month day genre comments
comments: [EAC, LAME, from.+collection, 'ripped by']
genre: [rnb, 'power metal']
update_database: true
If a custom pattern is not defined for a given field, the field will be nulled
unconditionally.
Note that the plugin currently does not zero fields when importing "as-is".
Manually Triggering Zero
------------------------
The ``zero`` command will invoke the zero plugin on items matching a query. Use the
command ``beet zero [QUERY]``