Summary

Automatic encoding & decoding that conforms to NSCoding protocol (NSCoding / NSKeyed​Archiver).

To understand how persistance can be achived, go through these useful links

1. NSCoding(Apple Doc),
2. NSHipster-NSCoding,
3. Ray Wenderlich-Persistance

Just imagine if your Model Class has hell lot of Instance Variables and you want to dump it (persistance), you will curse yourself writing code for

1. - (id)initWithCoder:(NSCoder *)decoder and
2. - (void)encodeWithCoder:(NSCoder *)encoder

Usage

To run the example project, clone the repo, and run pod install from the Example directory first.

Installation

Author

Ravi Prakash Sahu, [email protected]

License

AutoEncodeDecode is available under the MIT license. See the LICENSE file for more info.

Sample

Model Class

@interface RSClassA : NSObject <NSCoding>

@property NSString *alpha;
@property NSNumber *beta;
@property NSData *gamma;
@property NSArray *listArray;

@end

#import "RSClassA.h"
#import <AutoEncodeDecode/NSObject+NSCoding.h>

@implementation RSClassA

-(void)encodeWithCoder:(NSCoder *)coder {
    [self autoEncodeWithCoder:coder];
}

-(id)initWithCoder:(NSCoder *)coder {
    if (self = [super init]) {
        [self autoDecode:coder];
    }
    return self;
}

@end

This is for extremely LAZY Ones

#import <Foundation/Foundation.h>
#import <AutoEncodeDecode/BaseModel.h>

@interface RSClassB : BaseModel

@property NSString *windows;
@property NSString *mac;

@end

#import "RSClassB.h"

@implementation RSClassB

@end

- (void)testAutoEncoderDecoder {
    // Write to file
    NSString *fileNameWithPath = [self getFilePath:@"Class_A_File"];
    [NSKeyedArchiver archiveRootObject:[self getTestRSClassAObject] toFile:fileNameWithPath];

    // Read the file
    RSClassA *readObjA = [NSKeyedUnarchiver unarchiveObjectWithFile:fileNameWithPath];
    NSLog(@"Alpha : %@, Gaama : %@, Array : %@", readObjA.alpha, readObjA.beta, [readObjA.listArray componentsJoinedByString:@"|"]);

    // Write to file
    fileNameWithPath = [self getFilePath:@"Class_B_File"];
    [NSKeyedArchiver archiveRootObject:[self getTestRSClassBObject] toFile:fileNameWithPath];

    // Read the file
    RSClassB *readObjB = [NSKeyedUnarchiver unarchiveObjectWithFile:fileNameWithPath];
    NSLog(@"Windows : %@, Mac : %@", readObjB.windows, readObjB.mac);
}

- (RSClassA*)getTestRSClassAObject {
    RSClassA *classObject = [RSClassA new];
    classObject.alpha = @"Test";
    classObject.beta = @(10);
    classObject.listArray = @[@"A", @"B"];
    return classObject;
}

- (RSClassB*)getTestRSClassBObject {
    RSClassB *classObject = [RSClassB new];
    classObject.windows = @"I hate it";
    classObject.mac = @"I love it";
    return classObject;
}

- (NSString*)getFilePath:(NSString *)aFileName {
    if (aFileName) {
        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
        NSString *documentsDirectory = [paths objectAtIndex:0];
        return [documentsDirectory stringByAppendingString:[NSString stringWithFormat:@"/%@.archive", aFileName]];
    }
    return nil;
}