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/* PlaylistArchiver.m - this file is part of Cynthiune
*
* Copyright (C) 2005 Wolfgang Sourdeau
*
* Author: Wolfgang Sourdeau <Wolfgang@Contre.COM>
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#define _GNU_SOURCE
#import <string.h>
#import <Foundation/NSArray.h>
#import <Foundation/NSData.h>
#import <Foundation/NSFileManager.h>
#import <Foundation/NSPathUtilities.h>
#import <Foundation/NSString.h>
#import <Cynthiune/Preference.h>
#import "DictionaryCoder.h"
#import "GeneralPreference.h"
#import "Song.h"
#import "PlaylistArchiver.h"
#ifdef __MACOSX__
@implementation NSObject (CynthiuneExtension)
+ (id) subclassResponsibility: (SEL) aSel
{
return nil;
}
@end
#endif /* __MACOSX__ */
@implementation PlaylistArchiver : NSObject
+ (NSArray *) _encodeMetadataFromArray: (NSArray *) anArray
{
NSMutableArray *metadata;
NSEnumerator *enumerator;
DictionaryCoder *currentCoder;
Song *currentSong;
metadata = [NSMutableArray arrayWithCapacity: [anArray count]];
enumerator = [anArray objectEnumerator];
currentSong = [enumerator nextObject];
while (currentSong)
{
currentCoder = [DictionaryCoder new];
[currentCoder autorelease];
[currentSong encodeWithCoder: currentCoder];
[metadata addObject: currentCoder];
currentSong = [enumerator nextObject];
}
return metadata;
}
+ (BOOL) _saveDictionaries: (NSArray *) dictionaries
toFile: (NSString *) filename
{
NSData *fileContent;
NSString *content;
NSString *targetDirectory;
BOOL result, absoluteReferences;
absoluteReferences =
[[GeneralPreference instance] absolutePlaylistReferences];
targetDirectory = [[filename stringByDeletingLastPathComponent] stringByStandardizingPath];
content = [self fileContentFromDictionaries: dictionaries
inReferenceDirectory: targetDirectory
withAbsoluteFilenameReferences: absoluteReferences];
if (content && [content length])
{
fileContent = [NSData dataWithBytes: [content cString]
length: [content length]];
result = [[NSFileManager defaultManager]
createFileAtPath: filename
contents: fileContent
attributes: nil];
}
else
result = NO;
return result;
}
+ (BOOL) archiveRootObject: (id) anObject
toFile: (NSString *) filename
{
return [self
_saveDictionaries: [self _encodeMetadataFromArray: anObject]
toFile: filename];
}
+ (NSString *) fileContentFromDictionaries: (NSArray *) dictionaries
inReferenceDirectory: (NSString *) directory
withAbsoluteFilenameReferences: (BOOL) absolute
{
[self subclassResponsibility: _cmd];
return nil;
}
@end
@implementation PlaylistUnarchiver : NSObject
+ (NSArray *) _decodeArrayFromMetadata: (NSArray *) metadata
{
NSMutableArray *anArray;
NSEnumerator *enumerator;
DictionaryCoder *currentCoder;
Song *currentSong;
anArray = [NSMutableArray arrayWithCapacity: [metadata count]];
enumerator = [metadata objectEnumerator];
currentCoder = [enumerator nextObject];
while (currentCoder)
{
currentSong = [[Song alloc] initWithCoder: currentCoder];
[currentSong autorelease];
[anArray addObject: currentSong];
currentCoder = [enumerator nextObject];
}
return anArray;
}
+ (NSArray *) _loadDictionariesFromFile: (NSString *) filename
{
return [self dictionariesFromFileContent:
[NSString stringWithContentsOfFile: filename]
inReferenceDirectory:
[filename stringByDeletingLastPathComponent]];
}
+ (id) unarchiveObjectWithFile: (NSString*) filename
{
return [self _decodeArrayFromMetadata:
[self _loadDictionariesFromFile: filename]];
}
+ (NSArray *) dictionariesFromFileContent: (NSString *) content
inReferenceDirectory: (NSString *) directory
{
[self subclassResponsibility: _cmd];
return nil;
}
+ (NSArray *) dictionariesFromFilenames: (NSArray *) filenames
{
NSMutableArray *dictionaries;
NSEnumerator *files;
NSString *currentFile;
DictionaryCoder *currentCoder;
dictionaries = [NSMutableArray new];
[dictionaries autorelease];
files = [filenames objectEnumerator];
currentFile = [files nextObject];
while (currentFile)
{
currentCoder = [DictionaryCoder new];
[currentCoder autorelease];
[currentCoder encodeObject: currentFile forKey: @"filename"];
[dictionaries addObject: currentCoder];
currentFile = [files nextObject];
}
return dictionaries;
}
@end
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