cog/Playlist/PlaylistLoader.m

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2007-03-07 01:26:50 +00:00
//
// PlaylistLoader.m
// Cog
//
// Created by Vincent Spader on 3/05/07.
// Copyright 2007 Vincent Spader All rights reserved.
//
#include <objc/runtime.h>
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#import "PlaylistLoader.h"
#import "PlaylistController.h"
#import "PlaylistEntry.h"
#import "FilePlaylistEntry.h"
#import "AppController.h"
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#import "NSFileHandle+CreateFile.h"
#import "CogAudio/AudioPlayer.h"
#import "CogAudio/AudioContainer.h"
#import "CogAudio/AudioPropertiesReader.h"
#import "CogAudio/AudioMetadataReader.h"
#import "XMlContainer.h"
#import "NSData+MD5.h"
#import "Logging.h"
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@implementation PlaylistLoader
- (id)init
{
self = [super init];
if (self)
{
[self initDefaults];
queue = [[NSOperationQueue alloc] init];
[queue setMaxConcurrentOperationCount:1];
}
return self;
}
- (void)initDefaults
{
NSDictionary *defaultsDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithBool:YES], @"readCueSheetsInFolders",
nil];
[[NSUserDefaults standardUserDefaults] registerDefaults:defaultsDictionary];
}
- (void)dealloc
{
[queue release];
[super dealloc];
}
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- (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];
}
else if (type == kPlaylistXml)
{
return [self saveXml:filename];
}
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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) {
ALog(@"Error saving m3u!");
return NO;
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}
[fileHandle truncateFileAtOffset:0];
for (PlaylistEntry *pe in [playlistController arrangedObjects])
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{
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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=%lu\n\n",(unsigned long)[[playlistController content] count]] dataUsingEncoding:NSUTF8StringEncoding]];
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int i = 1;
for (PlaylistEntry *pe in [playlistController arrangedObjects])
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{
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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;
}
NSMutableDictionary * dictionaryWithPropertiesOfObject(id obj, NSArray * filterList)
{
NSMutableDictionary *dict = [NSMutableDictionary dictionary];
Class class = [obj class];
do {
unsigned count;
objc_property_t *properties = class_copyPropertyList(class, &count);
for (int i = 0; i < count; i++) {
NSString *key = [NSString stringWithUTF8String:property_getName(properties[i])];
if ([filterList containsObject:key]) continue;
Class classObject = NSClassFromString([key capitalizedString]);
if (classObject) {
id subObj = dictionaryWithPropertiesOfObject([obj valueForKey:key], filterList);
[dict setObject:subObj forKey:key];
}
else
{
id value = [obj valueForKey:key];
if(value) [dict setObject:value forKey:key];
}
}
free(properties);
class = [class superclass];
} while (class);
return dict;
}
- (BOOL)saveXml:(NSString *)filename
{
NSFileHandle *fileHandle = [NSFileHandle fileHandleForWritingAtPath:filename createFile:YES];
if (!fileHandle) {
return NO;
}
[fileHandle truncateFileAtOffset:0];
NSArray * filterList = [NSArray arrayWithObjects:@"display", @"length", @"path", @"filename", @"status", @"statusMessage", @"spam", @"stopAfter", @"shuffleIndex", @"index", @"current", @"queued", @"currentPosition", @"queuePosition", @"error", @"removed", @"URL", @"albumArt", nil];
NSMutableDictionary * albumArtSet = [[NSMutableDictionary alloc] init];
NSMutableArray * topLevel = [[NSMutableArray alloc] init];
for (PlaylistEntry *pe in [playlistController arrangedObjects])
{
BOOL error = [pe error];
NSMutableDictionary * dict = dictionaryWithPropertiesOfObject(pe, filterList);
NSString *path = [self relativePathFrom:filename toURL:[pe URL]];
[dict setObject:path forKey:@"URL"];
NSData * albumArt = [dict objectForKey:@"albumArtInternal"];
if (albumArt)
{
[dict removeObjectForKey:@"albumArtInternal"];
NSString * hash = [albumArt MD5];
if (![albumArtSet objectForKey:hash])
[albumArtSet setObject:albumArt forKey:hash];
[dict setObject:hash forKey:@"albumArt"];
}
if (error)
[dict removeObjectForKey:@"metadataLoaded"];
[topLevel addObject:dict];
[dict release];
}
NSMutableArray * queueList = [[NSMutableArray alloc] init];
for (PlaylistEntry *pe in [playlistController queueList])
{
[queueList addObject:[NSNumber numberWithInt:pe.index]];
}
NSDictionary * dictionary = [NSDictionary dictionaryWithObjectsAndKeys:albumArtSet, @"albumArt", queueList, @"queue", topLevel, @"items", nil];
NSData * data = [NSPropertyListSerialization dataWithPropertyList:dictionary format:NSPropertyListXMLFormat_v1_0 options:0 error:0];
[albumArtSet release];
[topLevel release];
[queueList release];
[fileHandle writeData:data];
[fileHandle closeFile];
return YES;
}
- (NSArray *)fileURLsAtPath:(NSString *)path
{
NSFileManager *manager = [NSFileManager defaultManager];
NSMutableArray *urls = [NSMutableArray array];
NSArray *subpaths = [manager subpathsAtPath:path];
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for (NSString *subpath in subpaths)
{
NSString *absoluteSubpath = [NSString pathWithComponents:[NSArray arrayWithObjects:path,subpath,nil]];
BOOL isDir;
if ( [manager fileExistsAtPath:absoluteSubpath isDirectory:&isDir] && isDir == NO)
{
if ([[absoluteSubpath pathExtension] caseInsensitiveCompare:@"cue"] != NSOrderedSame ||
[[NSUserDefaults standardUserDefaults] boolForKey:@"readCueSheetsInFolders"])
{
[urls addObject:[NSURL fileURLWithPath:absoluteSubpath]];
}
}
}
return urls;
}
- (NSArray*)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];
NSDictionary *xmlData = nil;
if (!urls)
return [NSArray array];
if (index < 0)
index = 0;
NSURL *url;
for (url in urls)
{
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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DLog(@"Expanded urls: %@", expandedURLs);
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NSArray *sortedURLs;
if (sort == YES)
{
sortedURLs = [expandedURLs sortedArrayUsingSelector:@selector(finderCompare:)];
// sortedURLs = [expandedURLs sortedArrayUsingSelector:@selector(compareTrackNumbers:)];
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}
else
{
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sortedURLs = expandedURLs;
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}
for (url in sortedURLs)
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{
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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 if ([[[[url path] pathExtension] lowercaseString] isEqualToString:@"xml"])
{
xmlData = [XmlContainer entriesForContainerURL:url];
}
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else
{
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[fileURLs addObject:url];
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}
}
DLog(@"File urls: %@", fileURLs);
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DLog(@"Contained urls: %@", containedURLs);
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for (url in fileURLs)
{
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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DLog(@"Valid urls: %@", validURLs);
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for (url in containedURLs)
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{
if (![[AudioPlayer schemes] containsObject:[url scheme]])
continue;
//Need a better way to determine acceptable file types than basing it on extensions.
if ([url isFileURL] && ![[AudioPlayer fileTypes] containsObject:[[[url path] pathExtension] lowercaseString]])
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continue;
[validURLs addObject:url];
}
//Create actual entries
int count = [validURLs count];
if (xmlData) count += [[xmlData objectForKey:@"entries"] count];
int i = 0;
NSMutableArray *entries = [NSMutableArray arrayWithCapacity:count];
for (NSURL *url in validURLs)
{
PlaylistEntry *pe;
if ([url isFileURL])
pe = [[FilePlaylistEntry alloc] init];
else
pe = [[PlaylistEntry alloc] init];
pe.URL = url;
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pe.index = index+i;
pe.title = [[url path] lastPathComponent];
pe.queuePosition = -1;
[entries addObject:pe];
[pe release];
++i;
}
int j = index + i;
if (xmlData)
{
for (NSDictionary *entry in [xmlData objectForKey:@"entries"])
{
PlaylistEntry *pe;
if ([[entry objectForKey:@"URL"] isFileURL])
pe = [[FilePlaylistEntry alloc] init];
else
pe = [[PlaylistEntry alloc] init];
[pe setValuesForKeysWithDictionary:entry];
pe.index = index+i;
pe.queuePosition = -1;
[entries addObject:pe];
[pe release];
++i;
}
}
NSIndexSet *is = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(index, [entries count])];
[playlistController insertObjects:entries atArrangedObjectIndexes:is];
if (xmlData && [[xmlData objectForKey:@"queue"] count])
{
[playlistController emptyQueueList:self];
i = 0;
for (NSNumber *index in [xmlData objectForKey:@"queue"])
{
int indexVal = [index intValue] + j;
PlaylistEntry *pe = [entries objectAtIndex:indexVal];
pe.queuePosition = i;
pe.queued = YES;
[[playlistController queueList] addObject:pe];
++i;
}
}
//Clear the selection
[playlistController setSelectionIndexes:nil];
[self performSelectorInBackground:@selector(loadInfoForEntries:) withObject:entries];
return entries;
}
- (void)loadInfoForEntries:(NSArray *)entries
{
for (PlaylistEntry *pe in entries)
{
if ([pe metadataLoaded]) continue;
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NSAutoreleasePool *pool =[[NSAutoreleasePool alloc] init];
NSInvocationOperation *readEntryInfoOperation;
readEntryInfoOperation = [[NSInvocationOperation alloc]
initWithTarget:self
selector:@selector(readEntryInfo:)
object:pe];
[readEntryInfoOperation addObserver:self
forKeyPath:@"isFinished"
options:NSKeyValueObservingOptionNew
context:NULL];
[queue addOperation:readEntryInfoOperation];
[readEntryInfoOperation release];
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[pool release];
}
[queue waitUntilAllOperationsAreFinished];
[playlistController performSelectorOnMainThread:@selector(updateTotalTime) withObject:nil waitUntilDone:NO];
}
- (NSDictionary *)readEntryInfo:(PlaylistEntry *)pe
{
// Just setting this to 20 for now...
NSMutableDictionary *entryInfo = [NSMutableDictionary dictionaryWithCapacity:20];
NSDictionary *entryProperties;
entryProperties = [AudioPropertiesReader propertiesForURL:pe.URL];
if (entryProperties == nil)
return nil;
[entryInfo addEntriesFromDictionary:entryProperties];
[entryInfo addEntriesFromDictionary:[AudioMetadataReader metadataForURL:pe.URL]];
return entryInfo;
}
- (void)observeValueForKeyPath:(NSString *)keyPath
ofObject:(id)object
change:(NSDictionary *)change
context:(void *)context
{
// We finished reading the info for a playlist entry
if ([keyPath isEqualToString:@"isFinished"] && [object isFinished])
{
// stop observing
[object removeObserver:self forKeyPath:keyPath];
// get the playlist entry that the operation read for
PlaylistEntry *pe = nil;
[[object invocation] getArgument:&pe atIndex:2];
[pe performSelectorOnMainThread:@selector(setMetadata:) withObject:[object result] waitUntilDone:NO];
}
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else
{
[super observeValueForKeyPath:keyPath
ofObject:object
change:change
context:context];
}
}
- (void)clear:(id)sender
{
[playlistController clear:sender];
}
- (NSArray*)addURLs:(NSArray *)urls sort:(BOOL)sort
{
return [self insertURLs:urls atIndex:[[playlistController content] count] sort:sort];
}
- (NSArray*)addURL:(NSURL *)url
{
return [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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}
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- (void)willInsertURLs:(NSArray*)urls origin:(URLOrigin)origin
{
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[playlistController willInsertURLs:urls origin:origin];
}
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- (void)didInsertURLs:(NSArray*)urls origin:(URLOrigin)origin
{
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[playlistController didInsertURLs:urls origin:origin];
}
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@end