NSStringEncoding - enum to string to enum

Question

So I'm saving the NSString encoding enum value in a database as a string. This is one of the values:

 NSUTF16LittleEndianStringEncoding = 0x94000100,

And I'm saving it as a string with value 0x94000100. My goal is to read this value as an NSString, but then turn it into a value I can use to encode:

        NSString* encodingValueAsString = [object objectForKey:kWSWordlistFilesEncodingKey];

        // Convert 'encodingValueAsString' to variable 'encoding' that can act as enum

        NSString* dataString = [[NSString alloc] initWithData:data
                                                             encoding:encoding];

How do I write that missing line?

rmaddy · Accepted Answer · 2014-01-30 05:58:48Z

1

There's no reason to convert the enum value to/from a string. Just save it and read it back as an int.

But the short answer to your original question is:

NSStringEncoding encoding = [encodingValueAsString intValue];

Wait - that won't work since you are saving the string as the hex value.

You need to use NSScanner:

NSScanner *scanner = [NSScanner scannerWithString:encodingValueAsString];
NSStringEncoding encoding;
[scanner scanHexInt:&encoding];

See why using int instead of a string would be easier?

answered Jan 30, 2014 at 5:58

rmaddy

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