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/* archiving class for serialization and persistance.
Copyright (C) 1995, 1996 Free Software Foundation, Inc.
Written by: Andrew Kachites McCallum <mccallum@gnu.ai.mit.edu>
Created: March 1995
This file is part of the GNUstep Base Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <gnustep/base/preface.h>
#include <Foundation/NSArchiver.h>
#include <Foundation/NSGArchiver.h>
#include <Foundation/NSData.h>
#include <gnustep/base/Coder.h>
@implementation NSArchiver
static Class NSArchiver_concrete_class;
+ (void) _setConcreteClass: (Class)c
{
NSArchiver_concrete_class = c;
}
+ (Class) _concreteClass
{
return NSArchiver_concrete_class;
}
+ (void) initialize
{
if (self == [NSArchiver class])
NSArchiver_concrete_class = [NSGArchiver class];
}
/* Allocating and Initializing an archiver */
+ allocWithZone:(NSZone *)zone
{
return NSAllocateObject([self _concreteClass], 0, zone);
}
/* This is the designated initializer */
- (id) initForWritingWithMutableData: (NSMutableData*)mdata
{
[self subclassResponsibility:_cmd];
return self;
}
/* Archiving Data */
+ (NSData*) archivedDataWithRootObject: (id)rootObject
{
id d = [[NSMutableData alloc] init];
id a = [[NSArchiver alloc] initForWritingWithMutableData:d];
[a encodeRootObject:rootObject];
return [d autorelease];
}
+ (BOOL) archiveRootObject: (id)rootObject toFile: (NSString*)path
{
/* xxx fix this return value */
id d = [self archivedDataWithRootObject:rootObject];
[d writeToFile:path atomically:NO];
return YES;
}
- (unsigned int) versionForClassName: (NSString*)className;
{
[self subclassResponsibility:_cmd];
return 0;
}
/* Getting data from the archiver */
+ unarchiveObjectWithData: (NSData*) data
{
return [[self _concreteClass] unarchiveObjectWithData: data];
}
+ unarchiveObjectWithFile: (NSString*) path
{
return [[self _concreteClass] unarchiveObjectWithFile: path];
}
- (NSMutableData*) archiverData
{
[self subclassResponsibility:_cmd];
return nil;
}
/* Substituting Classes */
+ (NSString*) classNameEncodedForTrueClassName: (NSString*)trueName
{
return [[self _concreteClass] classNameEncodedForTrueClassName: trueName];
}
- (void) enocdeClassName: (NSString*)trueName
intoClassName: (NSString*)inArchiveName
{
[self subclassResponsibility:_cmd];
}
@end
@implementation NSUnarchiver
static Class NSUnarchiver_concrete_class;
+ (void) _setConcreteClass: (Class)c
{
NSUnarchiver_concrete_class = c;
}
+ (Class) _concreteClass
{
return NSUnarchiver_concrete_class;
}
+ (void) initialize
{
if (self == [NSUnarchiver class])
NSUnarchiver_concrete_class = [NSGUnarchiver class];
}
// Initializing an unarchiver
+ allocWithZone:(NSZone *)zone
{
return NSAllocateObject([self _concreteClass], 0, zone);
}
- (id) initForReadingWithData: (NSData*)data
{
[self subclassResponsibility:_cmd];
return nil;
}
// Decoding objects
+ (id) unarchiveObjectWithData: (NSData*)data
{
return [[self _concreteClass] unarchiveObjectWithData: data];
}
+ (id) unarchiveObjectWithFile: (NSString*)path
{
return [[self _concreteClass] unarchiveObjectWithFile: path];
}
/* Managing */
- (BOOL) isAtEnd
{
[self subclassResponsibility:_cmd];
return NO;
}
- (NSZone*) objectZone
{
[self subclassResponsibility:_cmd];
return NULL;
}
- (void) setObjectZone: (NSZone*)zone
{
[self subclassResponsibility:_cmd];
}
- (unsigned int) systemVersion
{
[self subclassResponsibility:_cmd];
return 0;
}
/* Substituting Classes */
+ (NSString*) classNameDecodedForArchiveClassName: (NSString*)nameInArchive
{
return [[self _concreteClass]
classNameDecodedForArchiveClassName: nameInArchive];
}
+ (void) decodeClassName: (NSString*)nameInArchive
asClassName: (NSString*)trueName
{
return [[self _concreteClass]
decodeClassName: nameInArchive asClassName: trueName];
}
- (NSString*) classNameDecodedForArchiveClassName: (NSString*)nameInArchive
{
[self subclassResponsibility:_cmd];
return nil;
}
- (void) decodeClassName: (NSString*)nameInArchive
asClassName: (NSString*)trueName
{
[self subclassResponsibility:_cmd];
}
@end
/* Exceptions */
NSString *NSInconsistentArchiveException = @"NSInconsistentArchiveException";
/* NSObject extensions for archiving */
@implementation NSObject (NSArchiver)
- (Class) classForArchiver
{
return [self classForCoder];
}
- replacementObjectForArchiver: (NSArchiver*) archiver
{
return [self replacementObjectForCoder: archiver];
}
@end
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