Objective C HTML escape/unescape

Question

Wondering if there is an easy way to do a simple HTML escape/unescape in Objective C. What I want is something like this psuedo code:

NSString *string = @\"         


        

Answer 1

Why not just using ?

NSData *data = [s dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];
NSString *result = [[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] autorelease];
return result;

Noob question but in my case it works...

Answer 2

This is an easy to use NSString category implementation:

• http://code.google.com/p/qrcode-scanner-live/source/browse/trunk/iphone/Classes/NSString%2BHTML.h
• http://code.google.com/p/qrcode-scanner-live/source/browse/trunk/iphone/Classes/NSString%2BHTML.m

It is far from complete but you can add some missing entities from here: http://code.google.com/p/statz/source/browse/trunk/NSString%2BHTML.m

Usage:

#import "NSString+HTML.h"

NSString *raw = [NSString stringWithFormat:@"<div></div>"];
NSString *escaped = [raw htmlEscapedString];