UIImages.mm

   1 #import <Foundation/Foundation.h>
   2 #import <CoreGraphics/CoreGraphics.h>
   3
   4 #import <UIKit/UIKeyboard.h>
   5 #import <UIKit/UIImage.h>
   6
   7 extern "C" {
   8     #include <mach-o/nlist.h>
   9 }
  10
  11 extern "C" NSData *UIImagePNGRepresentation(UIImage *image);
  12
  13 int main(int argc, char *argv[]) {
  14     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
  15
  16     struct nlist nl[4];
  17     memset(nl, 0, sizeof(nl));
  18     nl[0].n_un.n_name = (char *) "___mappedImages";
  19     nl[1].n_un.n_name = (char *) "__UISharedImageInitialize";
  20     nl[2].n_un.n_name = (char *) "_LoadMappedImageRef";
  21     nlist("/System/Library/Frameworks/UIKit.framework/UIKit", nl);
  22     NSMutableDictionary **images = (id *) nl[0].n_value;
  23     void (*__UISharedImageInitialize)(bool) = (void (*)(bool)) nl[1].n_value;
  24     CGImageRef (*_LoadMappedImageRef)(CFStringRef) = (CGImageRef (*)(CFStringRef)) nl[2].n_value;
  25
  26     __UISharedImageInitialize(false);
  27
  28     NSArray *keys = [*images allKeys];
  29     for (int i(0), e([keys count]); i != e; ++i) {
  30         NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
  31         NSString *key = [keys objectAtIndex:i];
  32         CGImageRef ref;
  33         if (_LoadMappedImageRef == NULL)
  34             ref = reinterpret_cast<CGImageRef>([*images objectForKey:key]);
  35         else
  36             ref = _LoadMappedImageRef(reinterpret_cast<CFStringRef>(key));
  37         UIImage *image = [UIImage imageWithCGImage:ref];
  38         NSData *data = UIImagePNGRepresentation(image);
  39         [data writeToFile:[NSString stringWithFormat:@"%@", key] atomically:YES];
  40         [pool release];
  41     }
  42
  43     [pool release];
  44     return 0;
  45 }