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Make Discogs medium indexing code easier to understand

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Dmitry Bogdanov 2018-04-28 02:23:46 +02:00
parent 48140f11e7
commit 09ee194142
1 changed files with 14 additions and 10 deletions
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24
beetsplug/discogs.py
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@ -347,30 +347,34 @@ class DiscogsPlugin(BeetsPlugin):
# a 2-sided medium.
if ''.join(m) in ascii_lowercase:
sides_per_medium = 2
side_count = 1 # Force for first item, where medium == None
for track in tracks:
# Handle special case where a different medium does not indicate a
# new disc, when there is no medium_index and the ordinal of medium
# is not sequential. For example, I, II, III, IV, V. Assume these
# are the track index, not the medium.
# side_count is the number of mediums or medium sides (in the case
# of two-sided mediums) that were seen before
medium_is_index = track.medium and not track.medium_index and (
len(track.medium) != 1 or
ord(track.medium) - 64 != medium_count * sides_per_medium + side_count
# Not witin standard incremental medium values (A, B, C, ...)
ord(track.medium) - 64 != side_count + 1
)
if not medium_is_index and medium != track.medium:
if side_count < (sides_per_medium - 1):
# Increment side count: side changed, but not medium.
side_count += 1
medium = track.medium
side_count += 1
if sides_per_medium == 2:
if side_count % sides_per_medium:
# Two-sided medium changed. Reset index_count
index_count = 0
medium_count += 1
else:
# Increment medium_count and reset index_count and side
# count when medium changes.
medium = track.medium
# Medium changed. Reset index_count
medium_count += 1
index_count = 0
side_count = 0
medium = track.medium
index_count += 1
medium_count = 1 if medium_count == 0 else medium_count
track.medium, track.medium_index = medium_count, index_count