Ios – Encode NSString for XML/HTML

encodingiosobjective-c

Is there a way to HTML encode a string (NSString) in Objective-C, something along the lines of Server.HtmlEncode in .NET?

Best Solution

There isn't an NSString method that does that. You'll have to write your own function that does string replacements. It is sufficient to do the following replacements:

  • '&' => "&"
  • '"' => """
  • '\'' => "'"
  • '>' => ">"
  • '<' => "&lt;"

Something like this should do (haven't tried):

[[[[[myStr stringByReplacingOccurrencesOfString: @"&" withString: @"&amp;"]
 stringByReplacingOccurrencesOfString: @"\"" withString: @"&quot;"]
 stringByReplacingOccurrencesOfString: @"'" withString: @"&#39;"]
 stringByReplacingOccurrencesOfString: @">" withString: @"&gt;"]
 stringByReplacingOccurrencesOfString: @"<" withString: @"&lt;"];