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Re: String->HTML
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Re: String->HTML


  • Subject: Re: String->HTML
  • From: "John C. Randolph" <email@hidden>
  • Date: Tue, 27 Sep 2005 22:08:15 -0700


On Sep 27, 2005, at 9:53 PM, Jeff LaMarche wrote:


On Sep 27, 2005, at 6:18 PM, Scott Ribe wrote:


Is there any method anywhere to take an arbitrary string and get it back as
HTML-encoded entities. *Not* URL encoding, but & to &amp; > to &gt; and so
on. I can write this, but it just seems like something that ought be there
somewhere. (Strings are 99.99% guaranteed to be plain ASCII; possibility of
high-ASCII MacRoman encoding is so rare that I can ignore it; no other
encodings need be supported.)



Here's a method that Clark S. Cox posted to the list a few years ago and I've kept in my snippets folder... I think it's what you're looking for:


NSString *EncodeForHTML(NSString *input)
{
   unsigned        length    = [input length];
   unichar        *buffer    = malloc(length * sizeof *buffer);

   if(buffer)
   {

     NSMutableString    *result    = [NSMutableString string];

     for(unsigned i=0; i<length; ++i)
     {
       if(buffer[i] >= 'a' && buffer[i] <= 'z' ||
          buffer[i] >= 'A' && buffer[i] <= 'Z' ||
          buffer[i] >= '0' && buffer[i] <= '9')
       {
         [result appendFormat: @"%c", buffer[i]];
       }
       else
       {
         [result appendFormat: @"&#x%x;", buffer[i]];
       }
     }

     free(buffer);
     return result;
   }

   return nil;
}


???

This function looks like a no-op to me. It's scanning newly- allocated memory. Did you leave out a line or two?

-jcr


John C. Randolph <email@hidden> (408) 914-0013 Roaming Cocoa Engineer, Available for your projects at great Expense and Inconvenience.



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  • Follow-Ups:
    • Re: String->HTML
      • From: Jeff LaMarche <email@hidden>
References: 
 >String->HTML (From: Scott Ribe <email@hidden>)
 >Re: String->HTML (From: Jeff LaMarche <email@hidden>)

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