cog/Playlist/PlaylistLoader.m

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//
// PlaylistLoader.m
// Cog
//
// Created by Vincent Spader on 3/05/07.
// Copyright 2007 Vincent Spader All rights reserved.
//
#import "PlaylistLoader.h"
#import "PlaylistController.h"
#import "PlaylistEntry.h"
#import "NSFileHandle+CreateFile.h"
#import "CogAudio/AudioPlayer.h"
#import "CogAudio/AudioContainer.h"
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@implementation PlaylistLoader
- (BOOL)save:(NSString *)filename
{
NSString *ext = [filename pathExtension];
if ([ext isEqualToString:@"pls"])
{
return [self save:filename asType:kPlaylistPls];
}
else
{
return [self save:filename asType:kPlaylistM3u];
}
}
- (BOOL)save:(NSString *)filename asType:(PlaylistType)type
{
if (type == kPlaylistM3u)
{
return [self saveM3u:filename];
}
else if (type == kPlaylistPls)
{
return [self savePls:filename];
}
return NO;
}
- (NSString *)relativePathFrom:(NSString *)filename toURL:(NSURL *)entryURL
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{
NSString *basePath = [[[filename stringByStandardizingPath] stringByDeletingLastPathComponent] stringByAppendingString:@"/"];
if ([entryURL isFileURL]) {
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//We want relative paths.
NSMutableString *entryPath = [[[[entryURL path] stringByStandardizingPath] mutableCopy] autorelease];
[entryPath replaceOccurrencesOfString:basePath withString:@"" options:(NSAnchoredSearch | NSLiteralSearch | NSCaseInsensitiveSearch) range:NSMakeRange(0, [entryPath length])];
if ([entryURL fragment])
{
[entryPath appendString:@"#"];
[entryPath appendString:[entryURL fragment]];
}
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return entryPath;
}
else {
//Write [entryURL absoluteString] to file
return [entryURL absoluteString];
}
}
- (BOOL)saveM3u:(NSString *)filename
{
NSFileHandle *fileHandle = [NSFileHandle fileHandleForWritingAtPath:filename createFile:YES];
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if (!fileHandle) {
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NSLog(@"Error saving m3u!");
return nil;
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}
[fileHandle truncateFileAtOffset:0];
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PlaylistEntry *pe;
NSEnumerator *e = [[playlistController content] objectEnumerator];
while (pe = [e nextObject])
{
NSString *path = [self relativePathFrom:filename toURL:[pe url]];
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[fileHandle writeData:[[path stringByAppendingString:@"\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}
[fileHandle closeFile];
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return YES;
}
- (BOOL)savePls:(NSString *)filename
{
NSFileHandle *fileHandle = [NSFileHandle fileHandleForWritingAtPath:filename createFile:YES];
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if (!fileHandle) {
return NO;
}
[fileHandle truncateFileAtOffset:0];
[fileHandle writeData:[[NSString stringWithFormat:@"[playlist]\nnumberOfEntries=%i\n\n",[[playlistController content] count]] dataUsingEncoding:NSUTF8StringEncoding]];
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NSEnumerator *e = [[playlistController content] objectEnumerator];
PlaylistEntry *pe;
int i = 1;
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while (pe = [e nextObject])
{
NSString *path = [self relativePathFrom:filename toURL:[pe url]];
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NSString *entry = [NSString stringWithFormat:@"File%i=%@\n",i,path];
[fileHandle writeData:[entry dataUsingEncoding:NSUTF8StringEncoding]];
i++;
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}
[fileHandle writeData:[@"\nVERSION=2" dataUsingEncoding:NSUTF8StringEncoding]];
[fileHandle closeFile];
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return YES;
}
- (NSArray *)fileURLsAtPath:(NSString *)path
{
NSFileManager *manager = [NSFileManager defaultManager];
NSMutableArray *urls = [NSMutableArray array];
NSString *subpath;
NSArray *subpaths = [manager subpathsAtPath:path];
NSEnumerator *e = [subpaths objectEnumerator];
while(subpath = [e nextObject])
{
NSString *absoluteSubpath = [NSString pathWithComponents:[NSArray arrayWithObjects:path,subpath,nil]];
BOOL isDir;
if ( [manager fileExistsAtPath:absoluteSubpath isDirectory:&isDir] && isDir == NO)
{
[urls addObject:[NSURL fileURLWithPath:absoluteSubpath]];
}
}
return urls;
}
- (void)insertURLs:(NSArray *)urls atIndex:(int)index sort:(BOOL)sort
{
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NSMutableSet *uniqueURLs = [NSMutableSet set];
NSMutableArray *expandedURLs = [NSMutableArray array];
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NSMutableArray *containedURLs = [NSMutableArray array];
NSMutableArray *fileURLs = [NSMutableArray array];
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NSMutableArray *validURLs = [NSMutableArray array];
if (!urls)
return;
if (index < 0)
index = 0;
NSEnumerator *urlEnumerator = [urls objectEnumerator];
NSURL *url;
while (url = [urlEnumerator nextObject])
{
if ([url isFileURL]) {
BOOL isDir;
if ([[NSFileManager defaultManager] fileExistsAtPath:[url path] isDirectory:&isDir])
{
if (isDir == YES)
{
//Get subpaths
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[expandedURLs addObjectsFromArray:[self fileURLsAtPath:[url path]]];
}
else
{
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[expandedURLs addObject:url];
}
}
}
else
{
//Non-file URL..
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[expandedURLs addObject:url];
}
}
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NSLog(@"Expanded urls: %@", expandedURLs);
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NSArray *sortedURLs;
if (sort == YES)
{
NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"absoluteString" ascending:YES];
sortedURLs = [expandedURLs sortedArrayUsingDescriptors:[NSArray arrayWithObject:sortDescriptor]];
[sortDescriptor release];
}
else
{
sortedURLs = [expandedURLs copy];
}
urlEnumerator = [sortedURLs objectEnumerator];
while (url = [urlEnumerator nextObject])
{
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//Container vs non-container url
if ([[self acceptableContainerTypes] containsObject:[[[url path] pathExtension] lowercaseString]]) {
[containedURLs addObjectsFromArray:[AudioContainer urlsForContainerURL:url]];
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//Make sure the container isn't added twice.
[uniqueURLs addObjectsFromArray:containedURLs];
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}
else
{
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[fileURLs addObject:url];
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}
}
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NSLog(@"File urls: %@", fileURLs);
NSLog(@"Contained urls: %@", containedURLs);
urlEnumerator = [fileURLs objectEnumerator];
while (url = [urlEnumerator nextObject])
{
if (![[AudioPlayer schemes] containsObject:[url scheme]])
continue;
//Need a better way to determine acceptable file types than basing it on extensions.
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if ([url isFileURL] && ![[AudioPlayer fileTypes] containsObject:[[[url path] pathExtension] lowercaseString]])
continue;
if (![uniqueURLs containsObject:url])
{
[validURLs addObject:url];
[uniqueURLs addObject:url];
}
}
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NSLog(@"Valid urls: %@", validURLs);
urlEnumerator = [containedURLs objectEnumerator];
while (url = [urlEnumerator nextObject])
{
if (![[AudioPlayer schemes] containsObject:[url scheme]])
continue;
//Need a better way to determine acceptable file types than basing it on extensions.
if (![[AudioPlayer fileTypes] containsObject:[[[url path] pathExtension] lowercaseString]])
continue;
[validURLs addObject:url];
}
//Create actual entries
int i;
NSMutableArray *entries = [NSMutableArray array];
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for (i = 0; i < [validURLs count]; i++)
{
PlaylistEntry *pe = [[PlaylistEntry alloc] init];
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NSURL *url = [validURLs objectAtIndex:i];
[pe setURL:url];
[pe setIndex:[NSNumber numberWithInt:(index+i)]];
[pe setTitle:[[url path] lastPathComponent]];
[entries addObject:pe];
[pe release];
}
NSIndexSet *is = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(index, [entries count])];
[playlistController insertObjects:entries atArrangedObjectIndexes:is];
//Select the first entry in the group that was just added
[playlistController setSelectionIndex:index];
//Other thread for reading things...
[NSThread detachNewThreadSelector:@selector(readEntriesInfoThread:) toTarget:self withObject:entries];
return;
}
- (void)readEntriesInfoThread:(NSArray *)entries
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSEnumerator *e = [entries objectEnumerator];
PlaylistEntry *pe;
while (pe = [e nextObject])
{
[pe readPropertiesThread];
[pe readMetadataThread];
//Hack so the display gets updated
if (pe == [playlistController currentEntry])
[playlistController performSelectorOnMainThread:@selector(setCurrentEntry:) withObject:[playlistController currentEntry] waitUntilDone:YES];
}
[playlistController performSelectorOnMainThread:@selector(updateTotalTime) withObject:nil waitUntilDone:NO];
[pool release];
}
- (void)addURLs:(NSArray *)urls sort:(BOOL)sort
{
[self insertURLs:urls atIndex:[[playlistController content] count] sort:sort];
}
- (void)addURL:(NSURL *)url
{
[self insertURLs:[NSArray arrayWithObject:url] atIndex:[[playlistController content] count] sort:NO];
}
- (NSArray *)acceptableFileTypes
{
return [[self acceptableContainerTypes] arrayByAddingObjectsFromArray:[AudioPlayer fileTypes]];
}
- (NSArray *)acceptablePlaylistTypes
{
return [NSArray arrayWithObjects:@"m3u", @"pls", nil];
}
- (NSArray *)acceptableContainerTypes
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{
return [AudioPlayer containerTypes];
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}
@end