Re: printf with "%@"

FROM : Piers Uso Walter
DATE : Fri Aug 11 18:41:32 2006

Am 11. Aug 2006 um 18:19 schrieb Dirk Stegemann:

> Hi,
>
> Am 11.08.2006 um 19:08 schrieb Roland Silver:

>> The trouble with NSLog is that it prints all that extra stuff 
>> before the actual formatted message. For example,
>>     NSLog(@"sender=%@\n", sender);
>> logs this:
>>     2006-08-11 10:06:29.545 EmulatorV4.17.04[1380] sender=<MenuItem: 
>> 0x449040 Ad Hoc Test>
>> in the Run log, rather than just:
>>     sender=<MenuItem: 0x449040 Ad Hoc Test>



It's easy to write such a function.


Something like this should do. [not tested beyond compilability and 
the primitive test case in main()]


#import <Foundation/Foundation.h>

int printWithAtFormat(NSString *aFormatString, ...)
   /*" Raises an NSInvalidArgumentException if aFormatString is nil. "*/
{
   va_list myArgs;
   NSString *outputString;
   
   va_start(myArgs, aFormatString);
   outputString = [[NSString alloc] initWithFormat:aFormatString 
arguments:myArgs];
   va_end(myArgs);
   int retval = printf("%s", [outputString lossyCString]);
   [outputString release];
   return retval;
}

int main(int argc, const char *argv[])
{
   NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
   NSArray *array = [NSArray arrayWithObjects:@"A", @"B", nil];

   printf("printf:            array = %s [%d elements]\n", [[array 
description] lossyCString], [array count]);
   printWithAtFormat(@"printWithAtFormat: array = %@ [%d elements]\n", 
array, [array count]);
   [pool release];
   return 0;
}



With kind regards

Piers

--
Piers Uso Walter <Piers.<email_removed>>
ilink Kommunikationssysteme GmbH