Extract a jpeg photo from your dslocal user file

gistfile1.m

#import <Foundation/Foundation.h>
#import <AppKit/AppKit.h>

int main(int argc, char **argv) {
	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
	
	NSString *sourceFile = [NSString stringWithCString:(const char *)argv[1] encoding:NSUTF8StringEncoding];
	NSData *fileData = [NSData dataWithContentsOfFile:[sourceFile stringByExpandingTildeInPath]];
	NSDictionary *plist = [NSPropertyListSerialization propertyListWithData:fileData options:0 format:NULL error:NULL];
	
	NSArray *photos = [plist objectForKey:@"jpegphoto"];
	NSData *imageData = [photos objectAtIndex:0];
	
	NSImage *jpegImage = [[NSImage alloc] initWithData:imageData];
	NSBitmapImageRep *imgRep = [[jpegImage representations] objectAtIndex:0];
	NSData *data = [imgRep representationUsingType: NSJPEGFileType properties:nil];
	[data writeToFile:[@"~/img.jpg" stringByExpandingTildeInPath] atomically:NO];

	[pool release];
	
	return EXIT_SUCCESS;
}

oh yea, for those not familiar with gcc command line:
gcc jpg.m -framework Foundation -framework AppKit -o jpg.a