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[Shuffle Function] Greatly optimize list generator 

The list generator now selects only a list of unique album names, which
may include empty string as well as NSNull, so filter those as well.

Signed-off-by: Christopher Snowhill <kode54@gmail.com>
swiftingly
Christopher Snowhill 2022-06-17 17:03:50 -07:00
parent 9820571a94
commit cad6ddac02
1 changed files with 22 additions and 21 deletions
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43
Playlist/PlaylistController.m
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@ -1182,29 +1182,30 @@ static inline void dispatch_sync_reentrant(dispatch_queue_t queue, dispatch_bloc
- (NSArray *)shuffleAlbums {
NSArray *newList = [self arrangedObjects];
NSMutableArray *temp = [[NSMutableArray alloc] init];
NSMutableArray *albums = [[NSMutableArray alloc] init];
NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"track"
ascending:YES];
for(unsigned long i = 0, j = [newList count]; i < j; ++i) {
PlaylistEntry *pe = newList[i];
NSString *album = [pe album];
if(!album) album = @"";
if([albums containsObject:album]) continue;
[albums addObject:album];
NSArray *albumContent = [self filterPlaylistOnAlbum:album];
NSArray *sortedContent =
[albumContent sortedArrayUsingDescriptors:@[sortDescriptor]];
if(sortedContent && [sortedContent count])
[temp addObject:sortedContent[0]];
}
NSArray *tempList = [Shuffle shuffleList:temp];
NSSortDescriptor *sortDescriptorTrack = [[NSSortDescriptor alloc] initWithKey:@"track"
ascending:YES];
NSSortDescriptor *sortDescriptorDisc = [[NSSortDescriptor alloc] initWithKey:@"disc"
ascending:YES];
NSArray *albums = [newList valueForKey:@"album"];
albums = [[NSSet setWithArray:albums] allObjects];
NSArray *tempList = [Shuffle shuffleList:albums];
temp = [[NSMutableArray alloc] init];
for(unsigned long i = 0, j = [tempList count]; i < j; ++i) {
PlaylistEntry *pe = tempList[i];
NSString *album = [pe album];
NSArray *albumContent = [self filterPlaylistOnAlbum:album];
BOOL blankAdded = NO;
for(NSString *album in tempList) {
NSString *theAlbum = album;
if((id)album == [NSNull null]) {
if(blankAdded)
continue;
else
theAlbum = @"";
blankAdded = YES;
} else if([album isEqualToString:@""]) {
if(blankAdded) continue;
blankAdded = YES;
}
NSArray *albumContent = [self filterPlaylistOnAlbum:theAlbum];
NSArray *sortedContent =
[albumContent sortedArrayUsingDescriptors:@[sortDescriptor]];
[albumContent sortedArrayUsingDescriptors:@[sortDescriptorDisc, sortDescriptorTrack]];
if(sortedContent && [sortedContent count])
[temp addObjectsFromArray:sortedContent];
}