special characters are destroyed when copying a string character by character

[Horst Jäger]

Hi,

I have noticed that special characters are destoryed when they are copied one 
by one from one string into another. Listed below is some demo code (demo.h, 
Demo.m) which yields the console log also listed below (Demo.log). 

It states that the String containig no special characters is copied properly 
while the other is not.

Any idea why?

Thanks in advance

Horst



:::::::::::::::::::::::::::::::::::: Demo.log 
::::::::::::::::::::::::::::::::::::

2011-04-05 17:47:24.280 Demo[8890:207] Wurst Wurst 1
2011-04-05 17:47:24.281 Demo[8890:207] Käse K‰se 0

:::::::::::::::::::::::::::::::::::: /Demo.log 
::::::::::::::::::::::::::::::::::::

:::::::::::::::::::::::::::::::::::: Demo.h ::::::::::::::::::::::::::::::::::::

@interface Demo : NSObject

+(NSString*)copyUnicharByUnicharString:(NSString*)src;

+(void)demo;

@end

:::::::::::::::::::::::::::::::::::: /Demo.h 
::::::::::::::::::::::::::::::::::::

:::::::::::::::::::::::::::::::::::: Demo.m ::::::::::::::::::::::::::::::::::::

#import "Demo.h"


@implementation Demo

+(NSString*)copyUnicharByUnicharString:(NSString*)src{
        NSMutableString* dst = [NSMutableString string];
        NSUInteger length = [src length];
        for(NSUInteger index = 0; index < length; ++index){
                unichar chr = [src characterAtIndex:index];
                [dst appendFormat:@"%c", chr];
        }
        return dst;
}

+(void)demo{

        NSString* sausageString = @"Wurst"; // Wurst is the German word for 
sausage
        NSString* cheeseString  = @"Käse" ; // Käse  is the German word for 
cheese
        
        NSString* sausageStringCopy = [self 
copyUnicharByUnicharString:sausageString];
        NSString* cheeseStringCopy  = [self 
copyUnicharByUnicharString:cheeseString ];
        
        BOOL sausageStringIsEqualToSausageStringCopy = [sausageString 
isEqualToString:sausageStringCopy];
        BOOL cheeseStringIsEqualToCheeseStringCopy   = [cheeseString  
isEqualToString:cheeseStringCopy ];
        
        NSLog(@"%@ %@ %d", sausageString, sausageStringCopy, 
sausageStringIsEqualToSausageStringCopy);
        NSLog(@"%@ %@ %d", cheeseString , cheeseStringCopy , 
cheeseStringIsEqualToCheeseStringCopy  );
        
}

@end

:::::::::::::::::::::::::::::::::::: Demo.m ::::::::::::::::::::::::::::::::::::












--
Horst Jäger             h.jae...@medienkonzepte.de
Medienkonzepte  http://www.medienkonzepte.de/
Schaafenstr. 25, 50676 Köln, Germany
Tel +49 221 93187017  / Fax +49 221 93187029

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