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#objective-c xrefs hopper script
#rewrite the IDAPython script https://github.com/fireeye/flare-ida/blob/master/python/flare/objc2_xrefs_helper.py
#author: Kai Lu(@k3vinlusec)
#editor: Zhuoli Li(@dreampiggy)

def getRefPtr(doc,classMethodsVA,objcSelRefs, objcMsgRefs, objcConst):
	ret = (None, None)
	namePtr = doc.readUInt64LE(classMethodsVA) #get name field in struct __objc_method, it's selector
	ctn = 0

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ffmpeg -i input.mov -vcodec libwebp -lossless 1 -q:60 -preset default -loop 0 -an -vsync 0 output.webp

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void quicksortInPlace(NSMutableArray *array, NSInteger first, NSInteger last, NSComparator comparator) {
    if (first >= last) return;
    id pivot = array[(first + last) / 2];
    NSInteger left = first;
    NSInteger right = last;
    while (left <= right) {
        while (comparator(array[left], pivot) == NSOrderedAscending)
            left++;
        while (comparator(array[right], pivot) == NSOrderedDescending)
            right--;

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#ifndef TTD_CATEGORY_PROPERTY
#define TTD_CATEGORY_PROPERTY
#import <objc/runtime.h>
#define TTD_GET_PROPERTY(property) objc_getAssociatedObject(self, @selector(property));
#define TTD_SET_STRONG(property) objc_setAssociatedObject(self, @selector(property), property, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
#define TTD_SET_COPY(property) objc_setAssociatedObject(self, @selector(property), property, OBJC_ASSOCIATION_COPY_NONATOMIC);
#define TTD_SET_UNSAFE_UNRETAINED(property) objc_setAssociatedObject(self, @selector(property), property, OBJC_ASSOCIATION_ASSIGN);
#define TTD_SET_ASSIGN(property, value) objc_setAssociatedObject(self, @selector(property), value, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
#define TTD_SET_WEAK(property) id __weak __weak_object = property; \
    id (^__weak_block)() = ^{ return __weak_object; }; \

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title	date	tags	categories	author
The Core of SDWebImage v5.6 Architecture	2020-02-22 23:08:12 +0800	SourceCode iOS cache SourceCode	iOS Objc	土土Edmond木

This article is based on SDWebImage 5.6. Why i write this article, cause i found that SD's API is constantly iterating, and many of the structures are different from earlier versions. Here is to make a record. We will start from the top of the API's level list below, force on the entire framework's data flow.

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extension AnimatedImage {
    struct WrapperView: View & Inspectable {
        var name: String
        var bundle: Bundle?
        @State var isAnimating: Bool

        var onViewUpdate: (Self, PlatformView, AnimatedImage.Context) -> Void

        var body: some View {
            AnimatedImage(name: name, bundle: bundle, isAnimating: $isAnimating)

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Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

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extension String
{
    /// Creates a string by decoding a sequence of UTF-8 code units.
    init?<S: Sequence>(utf8 input: S) where S.Iterator.Element == UTF8.CodeUnit {
        var chars: [Character] = []
        var decoder = UTF8()
        var iter = input.makeIterator()
        loop: while true {
            switch decoder.decode(&iter) {
            case .scalarValue(let scalar): chars.append(Character(scalar))

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#import <Foundation/Foundation.h>

int main(int argc, const char * argv[])
{
   NSRunLoop   * runLoop;
   CLIMain     * main; // replace with desired class

   @autoreleasepool
   {
      // create run loop

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- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {
    if (!self.isUserInteractionEnabled || self.isHidden || self.alpha <= 0.01) {
        return nil;
    }
    if ([self pointInside:point withEvent:event]) {
        for (UIView *subview in [self.subviews reverseObjectEnumerator]) {
            CGPoint convertedPoint = [subview convertPoint:point fromView:self];
            UIView *hitTestView = [subview hitTest:convertedPoint withEvent:event];
            if (hitTestView) {
                return hitTestView;