CODEWITHSUNDEEP
objective-ccharacter-encodingnsstring
palusik
palusik

Reputation: 111

Polish letters in NSString

I have simple question but can't find answer:

NSString *polishLetters = @"ąęćźż"; 
//How to get NSString *correctString = @"aeczz";

So it's about string coding..How to do this?

Upvotes: 1

Views: 134

Answers (1)

Martin R
Martin R

Reputation: 539965

NSString *polishLetters = @"ąęćźż";
NSMutableString *correctString = [polishLetters mutableCopy];
CFStringTransform((__bridge CFMutableStringRef)correctString, NULL, kCFStringTransformStripCombiningMarks, NO);
NSLog(@"%@", correctString);
// Output: aeczz

This is not really about "string coding". ą is Unicode U+0105 (LATIN SMALL LETTER A WITH OGONEK), and the Unicode Data Base http://www.unicode.org/Public/6.2.0/ucd/UnicodeData.txt defines the properties of that character as

0105;LATIN SMALL LETTER A WITH OGONEK;Ll;0;L;0061 0328;;;;N;LATIN SMALL LETTER A OGONEK;;0104;;0104

Field #6 (0061 0328) is the decomposition into a (U+0061) and "COMBINING OGONEK" (U+328). The above string transformation removes the combining mark, leaving just a.

Upvotes: 3

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