Objective-C

StringBuilder Encode Charset

Demonstrates the importance of the charset argument when encoding/decoding. Objective-C

#import <NSString.h>
#import <CkoStringBuilder.h>

NSString *s = @"&eacute; &#233; &#xE9;";

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

[sb Append: s];
[sb EntityDecode];

//  The string now contains: "é é é"
NSLog(@"%@",[sb GetAsString]);

//  If encoded to hex using the iso-8859-1 charset, 
//  each é char is represented in 1 byte.
//  Output: E920E920E9
NSLog(@"%@",[sb GetEncoded: @"hex" charset: @"iso-8859-1"]);

//  If encoded to hex using the utf-8 charset, 
//  each é char is represented in 2 bytes.
//  Output: C3A920C3A920C3A9
NSLog(@"%@",[sb GetEncoded: @"hex" charset: @"utf-8"]);

//  Here's utf-16
//  Output: E9002000E9002000E900
NSLog(@"%@",[sb GetEncoded: @"hex" charset: @"utf-16"]);

//  utf-32
//  Output: E900000020000000E900000020000000E9000000
NSLog(@"%@",[sb GetEncoded: @"hex" charset: @"utf-32"]);