Objective-C

MIME Header Q and B Encoding and Decoding

See more Encryption Examples

Demonstrates how to Q and B encode/decode. Objective-C

#import <CkoStringBuilder.h>

BOOL success = NO;

CkoStringBuilder *sb = [[CkoStringBuilder alloc] init];

[sb Append: @"This is a test"];

NSLog(@"%@",[sb GetEncoded: @"B" charset: @"utf-8"]);
// output is:
// =?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=

NSLog(@"%@",[sb GetEncoded: @"Q" charset: @"iso-8859-1"]);
// output is:
// =?utf-8?Q?This_is_a_test?=

CkoStringBuilder *sb2 = [[CkoStringBuilder alloc] init];

[sb2 Append: @"=?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?="];
[sb2 Decode: @"B" charset: @"utf-8"];
NSLog(@"%@",[sb2 GetAsString]);

// output is:
// This is a test

[sb2 Clear];
[sb2 Append: @"=?utf-8?Q?This_is_a_test?="];
[sb2 Decode: @"Q" charset: @"utf-8"];
NSLog(@"%@",[sb2 GetAsString]);

// output is:
// This is a test

// "B" or "Q" will decode both B and Q.
[sb2 Clear];
[sb2 Append: @"=?utf-8?Q?This_is_a_test?= 123 =?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?="];
[sb2 Decode: @"Q" charset: @"utf-8"];
NSLog(@"%@",[sb2 GetAsString]);

// output is:
// This is a test 123 This is a test