gistfile1.txt

#import <CoreFoundation/CoreFoundation.h>

void DescribeCFObject(CFTypeRef cfobject)
{
  CFStringRef description = CFCopyDescription(cfobject);
  printf("%s\n", CFStringGetCStringPtr(description, CFStringGetSystemEncoding()));
  CFRelease(description);
}

const void *RetainCFObjectForCFArray(CFAllocatorRef allocator, const void *object)
{
  return (void *) CFRetain((CFTypeRef) object);
}

void ReleaseCFObjectForCFArray(CFAllocatorRef allocator, const void *object)
{
  CFRelease((CFTypeRef) object);
}

CFStringRef DescribeCFObjectForCFArray(const void *object)
{
  return CFCopyDescription((CFTypeRef) object);
}

int main(int argCount, const char **argValues)
{
  CFArrayCallBacks callbacks;
  callbacks.version = 0;
  callbacks.retain = &RetainCFObjectForCFArray;
  callbacks.release = &ReleaseCFObjectForCFArray;
  callbacks.copyDescription = &DescribeCFObjectForCFArray;

  CFMutableArrayRef myArray = CFArrayCreateMutable(kCFAllocatorDefault, argCount, &callbacks);

  for (int index = 0; index < argCount; index++) {
    CFStringRef string = CFStringCreateWithCString(kCFAllocatorDefault, argValues[index], CFStringGetSystemEncoding());
    CFArraySetValueAtIndex(myArray, index, string);
    CFRelease(string);
  }

  DescribeCFObject(myArray);

  CFRelease(myArray);
}