beets/docs/plugins/zero.rst
2015-10-09 21:38:38 +02:00

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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. It works in
two independent modes - blacklist and whitelist. You can only choose one option,
however blacklist is the default. For example, the plugin can strip useless
comments like "ripped by MyGreatRipper."
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 ``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`` respectively to list of fields that plugin should
preserve. That way ``zero`` cleans anything other than fields written in this
option.
* 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".