/* A demonstration of writing and reading with NSArchiver */ #if 1 #include #include #include #include #include #include int main() { id set; id arp; id arc; id una; id xxx; id apl; [NSAutoreleasePool enableDoubleReleaseCheck:YES]; arp = [[NSAutoreleasePool alloc] init]; /* Create a Set of int's */ set = [[NSSet alloc] initWithObjects: @"apple", @"banana", @"carrot", @"dal", @"escarole", @"fava", nil]; /* Display the set */ printf("Writing:\n"); { id o, e = [set objectEnumerator]; while ((o = [e nextObject])) printf("%s\n", [o cString]); } apl = [[NSAutoreleasePool alloc] init]; arc = [[NSArchiver new] autorelease]; printf("%u\n", [arc retainCount]); [arc retain]; printf("%u\n", [arc retainCount]); [arc release]; printf("%u\n", [arc retainCount]); [arc encodeRootObject: set]; una = [[[NSUnarchiver alloc] initForReadingWithData: [arc archiverData]] autorelease]; xxx = [una decodeObject]; if ([xxx isEqual: set] == NO) printf("Argh\n"); printf("%s\n", [[xxx description] cString]); [apl release]; /* Write it to a file */ [NSArchiver archiveRootObject: set toFile: @"./nsarchiver.dat"]; /* Release the object that was coded */ [set release]; /* Read it back in from the file */ #if 1 { id d = [[NSData alloc] initWithContentsOfFile:@"./nsarchiver.dat"]; id a = [NSUnarchiver alloc]; a = [a initForReadingWithData:d]; set = [a decodeObject]; } #else set = [NSUnarchiver unarchiveObjectWithFile: @"./nsarchiver.dat"]; #endif /* Display what we read, to make sure it matches what we wrote */ printf("\nReading:\n"); { id o, e = [set objectEnumerator]; while ((o = [e nextObject])) printf("%s\n", [o cString]); } #if 0 /* * Benchmark use of very lightwight archiving - a single * archiver/unarchiver pair using a single mutable data object to * archive and unarchive many times. */ { NSDate *start = [NSDate date]; NSAutoreleasePool *arp = [NSAutoreleasePool new]; int i; NSUnarchiver *u = nil; NSMutableData *d; NSArchiver *a; d = [NSMutableData data]; a = [[NSArchiver alloc] initForWritingWithMutableData: d]; [NSAutoreleasePool enableDoubleReleaseCheck:NO]; for (i = 0; i < 10000; i++) { id o; [a encodeRootObject: set]; if (u == nil) { u = [[NSUnarchiver alloc] initForReadingWithData: d]; } else { [u resetUnarchiverWithData: d atIndex: 0]; } o = [u decodeObject]; [d setLength: 0]; [a resetArchiver]; } [a release]; [u release]; [arp release]; printf("Time: %f\n", -[start timeIntervalSinceNow]); } #endif /* Do the autorelease. */ [arp release]; exit(0); } /* An old, unused test. */ #else #include #include #include @interface TestClass : NSObject { id next_responder; } - (void)setNextResponder: anObject; - nextResponder; @end @implementation TestClass - (void)setNextResponder: anObject { next_responder = anObject; } - nextResponder { return next_responder; } // NSCoding protocol - (void)encodeWithCoder:aCoder { [super encodeWithCoder:aCoder]; [aCoder encodeObjectReference:next_responder withName:@"Next Responder"]; } - initWithCoder:aDecoder { id d; [super initWithCoder:aDecoder]; [aDecoder decodeObjectAt:&next_responder withName:&d]; return self; } @end //////////////////////////////////////// int main() { id arp; id r1, r2; arp = [[NSAutoreleasePool alloc] init]; // Create a simple loop r1 = [[TestClass alloc] init]; r2 = [[TestClass alloc] init]; [r1 setNextResponder: r2]; [r2 setNextResponder: r1]; printf("Writing\n"); printf("%d\n", [r1 hash]); printf("%d\n", [r2 hash]); printf("%d\n", [[r1 nextResponder] hash]); printf("%d\n", [[r2 nextResponder] hash]); /* Write it to a file */ { id d = [[NSMutableData alloc] init]; id a = [[Archiver alloc] initForWritingWithMutableData: d]; [a startEncodingInterconnectedObjects]; [a encodeObject: r1 withName:@"one"]; [a encodeObject: r2 withName:@"another"]; [a finishEncodingInterconnectedObjects]; [d writeToFile: @"./nsarchiver.dat" atomically:NO]; [d release]; [a release]; } /* Release the object that was coded */ [r1 release]; [r2 release]; /* Read it back in from the file */ printf("\nReading:\n"); { id d; id a = [Unarchiver newReadingFromFile:@"./nsarchiver.dat"]; [a startDecodingInterconnectedObjects]; [a decodeObjectAt: &r1 withName:&d]; [a decodeObjectAt: &r2 withName:&d]; [a finishDecodingInterconnectedObjects]; } /* Display what we read, to make sure it matches what we wrote */ { printf("%d\n", [r1 hash]); printf("%d\n", [r2 hash]); printf("%d\n", [[r1 nextResponder] hash]); printf("%d\n", [[r2 nextResponder] hash]); } /* Do the autorelease. */ [arp release]; exit(0); } #endif