Archiving objects

Archiving

//
//  main.m
//  Archiving3
//
//  Created by Rabin Joshi on 6/18/11.
//  Copyright 2011 Techgene. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "Foo.h"
#import "Bar.h"

int main (int argc, const char * argv[])
{

    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    // insert code here...
    NSLog(@"Hello, World!");
    
    /*
    
    NSMutableData *dataArea;
    NSKeyedArchiver *archiver;
    
    Foo *myFoo1 = [[Foo alloc] init];
    Bar *myBar1 = [[Bar alloc] init];
    //Foo *myFoo2;
    //Bar *myBar2;
    
    [myFoo1 setStrVal: @"This is the string"];
    [myFoo1 setIntVal: 12345];
    [myFoo1 setFloatVal: 98.6];
    
    [myBar1 setStrVal: @"This is another string"];
    [myBar1 setIntVal: 67890];
    [myBar1 setFloatVal: 12.3];
    

    
    // Set up a data area and connect it to an NSKeyedArchiver object
    
    dataArea = [NSMutableData data];
    archiver = [[NSKeyedArchiver alloc]initForWritingWithMutableData: dataArea];
    
    
    // Now we can begin to archive objects
    
    [archiver encodeObject: myFoo1 forKey: @"myFoo1"];
    [archiver encodeObject: myBar1 forKey: @"myBar1"];
    [archiver finishEncoding];
    
    
    // Write the archived data are to a file
    
    if ( [dataArea writeToFile: @"/Users/rabinjoshi/Desktop/myArchive.plist" atomically: YES] == NO)
        NSLog (@"Archiving failed!");
    [archiver release];
    
    
     
    */
    
    
    
    //Unarchiving
    
    
    NSMutableData *dataArea2;
    NSKeyedUnarchiver *unarchiver;
    
    Foo *myFoo2;
    Bar *myBar2;
    
    dataArea2 = [NSData dataWithContentsOfFile:@"/Users/rabinjoshi/Desktop/myArchive.plist"];
    
    if (! dataArea2) {
        NSLog (@"Can’t read back archive file!");
        //Return (1);
    }
    
    unarchiver = [[NSKeyedUnarchiver alloc]initForReadingWithData: dataArea2];
    
    
    // Decode the objects we previously stored in the archive

    myFoo2 = [unarchiver decodeObjectForKey: @"myFoo1"];
    myBar2 = [unarchiver decodeObjectForKey: @"myBar1"];
    
    [unarchiver finishDecoding];
    [unarchiver release];
    
    
    // Verify that the restore was successful
    
    
    NSLog (@"%@ \n %i \n %g", [myFoo2 strVal], [myFoo2 intVal], [myFoo2 floatVal]);
    NSLog (@"%@ \n %i \n %g", [myBar2 strVal], [myBar2 intVal], [myBar2 floatVal]);

    [pool drain];
    return 0;
}