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Simplify data filtering

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This commit is contained in:
Adrian Sampson 2015-11-14 14:33:04 -08:00
parent 029915814b
commit 58205e1bef
1 changed files with 12 additions and 22 deletions
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34
beetsplug/edit.py
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@ -71,16 +71,13 @@ class EditPlugin(plugins.BeetsPlugin):
super(EditPlugin, self).__init__()
self.config.add({
# The default fields to edit.
'albumfields': 'album albumartist',
'itemfields': 'track title artist album',
'not_fields': 'id path',
})
# the not_fields field in your config sets the tags that
# will not be changed.
# If you happen to change them, they will be restored to the original
# value. The ID of an item will never be changed.
self.not_fields = self.config['not_fields'].as_str_seq()
# Silently ignore any changes to these fields.
'ignore_fields': 'id path',
})
def commands(self):
edit_command = ui.Subcommand(
@ -158,10 +155,16 @@ class EditPlugin(plugins.BeetsPlugin):
# Editing failed.
return
changed_objs = self.check_diff(data, new_data)
# Filter out any forbidden fields so we can avoid clobbering
# `id` and such by mistake.
ignore_fields = self.config['ignore_fields'].as_str_seq()
for d in data:
for key in list(d):
if key in ignore_fields:
del d[key]
# Save the new data.
self.save_items(changed_objs, lib, album)
self.save_items(data, lib, album)
def edit_data(self, data):
"""Dump a data structure to a file as text, ask the user to edit
@ -235,16 +238,3 @@ class EditPlugin(plugins.BeetsPlugin):
ob.try_sync(ui.should_write())
return
def check_diff(self, old_data, new_data):
return filter(None, map(self.reduce_it, old_data, new_data))
def reduce_it(self, ol, nl):
# if there is a forbidden field it resets them
if ol != nl:
for x in range(0, len(nl)):
if ol[x] != nl[x] and ol[x].keys()[0]in self.not_fields:
nl[x] = ol[x]
ui.print_("reset forbidden field.")
if ol != nl: # only keep objects that have changed
return ol, nl