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require 'rubygems'
require 'nokogiri'
require 'open-uri'
require 'RMagick'

def retrieve_image(url)
  data = open(url).read
  data
end

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UIImage *oldimage = [UIImage imageNamed:@"bunny.png"];
UIImage *newImage = [UIImage imageWithCGImage:[oldimage CGImage]
					scale:[oldimage scale]
				  orientation:UIImageOrientationDown];

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- (UIImage*)upsideDownBunny {
	UIImage *img = [UIImage imageNamed:"@bunny.png"];
	CGSize imgSize = [img size];
	UIGraphicsBeginImageContext(imgSize);
	CGContextRef context = UIGraphicsGetCurrentContext();
	CGContextRotateCTM(context, M_PI);
	CGContextTranslateCTM(context, -imgSize.width, -imgSize.height);
	[img drawInRect:CGRectMake(0, 0, imgSize.width, imgSize.height)];
	UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
	UIGraphicsEndImageContext();

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- (UIImage*)upsideDownBunny {
	__block CGImageRef cgImg;
	__block CGSize imgSize;
	__block UIImageOrientation orientation;
	dispatch_block_t createStartImgBlock = ^(void) {
		// UIImages should only be accessed from the main thread
		UIImage *img = [UIImage imageNamed:@"bunny.png"];
		imgSize = [img size]; // this size will be pre rotated
		orientation = [img imageOrientation];
		cgImg = CGImageRetain([img CGImage]); // this data is not rotated

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NSString* truncateString(NSString* input)
{
	NSCountedSet* set = [[NSCountedSet alloc] init];
	for( int i = 0; i < [input length]; i++ ){
		[set addObject:[NSString stringWithFormat:@"%c", [input characterAtIndex:i]]];
	}
	NSMutableString* result = [[NSMutableString alloc] init];
	for( NSString* key in set ){
		[result appendString:key];
		if( [set countForObject:key] > 1 ){