Easy access of the hooking methods

Documents/README.zh-Hans.md

@@ -19,7 +19,7 @@ class TestObject { // No need to inherit from NSObject.
 
 let obj = TestObject()
 
-let token = try hookBefore(object: obj, selector: #selector(TestObject.testMethod)) {
+let token = try ObjectHook(obj).hookBefore(#selector(TestObject.testMethod)) {
     print("Before executing `testMethod`")
 }
 
@@ -39,7 +39,7 @@ class TestObject {
 
 let obj = TestObject()
 
-let token = try hookAfter(object: obj, selector: #selector(TestObject.testMethod(_:)), closure: { obj, sel, parameter in
+let token = try ObjectHook(obj).hookAfter(#selector(TestObject.testMethod(_:)), closure: { obj, sel, parameter in
     print("After executing `testMethod` with parameter: \(parameter)")
 } as @convention(block) ( // Using `@convention(block)` to declares a Swift closure as an Objective-C block
     AnyObject, // `obj` Instance
@@ -65,7 +65,7 @@ class Math {
 
 let math = Math()
 
-try hookInstead(object: math, selector: #selector(Math.double(_:)), closure: { original, obj, sel, number in
+try ObjectHook(math).hook(#selector(Math.double(_:)), closure: { original, obj, sel, number in
     print("Before executing `double`")
     let originalResult = original(obj, sel, number)
     print("After executing `double`, got result \(originalResult)")

Example/MacCocoapodsDynamicExample/ViewController.swift

@@ -25,7 +25,7 @@ class ViewController: NSViewController {
     func hook() {
         // hook
         do {
-            try hookBefore(object: self, selector: #selector(NSViewController.viewDidAppear), closure: { viewController, _ in
+            try ObjectHook(self).hookBefore(#selector(NSViewController.viewDidAppear), closure: { viewController, _ in
                 print("ViewController did appear")
                 print("Title: \(viewController.title ?? "")")
             })

Example/MacCocoapodsStaticExample/ViewController.swift

@@ -25,7 +25,7 @@ class ViewController: NSViewController {
     func hook() {
         // hook
         do {
-            try hookBefore(object: self, selector: #selector(NSViewController.viewDidAppear), closure: { viewController, _ in
+            try ObjectHook(self).hookBefore(#selector(NSViewController.viewDidAppear), closure: { viewController, _ in
                 print("ViewController did appear")
                 print("Title: \(viewController.title ?? "")")
             })

Example/SPMExample/ContentView.swift

@@ -30,7 +30,7 @@ struct ContentView: View {
         let obj = MyObject()
         // hook
         do {
-            try hookBefore(object: obj, selector: #selector(MyObject.test), closure: { viewController, _ in
+            try ObjectHook(obj).hookBefore(#selector(MyObject.test), closure: { viewController, _ in
                 print("hooked")
             })
         } catch {

Example/iOSCocoapodsDynamicExample/ViewController.swift

@@ -20,7 +20,7 @@ class ViewController: UIViewController {
     func hook() {
         // hook
         do {
-            try hookBefore(object: self, selector: #selector(UIViewController.viewDidAppear(_:)), closure: { viewController, _ in
+            try ObjectHook(self).hookBefore(#selector(UIViewController.viewDidAppear(_:)), closure: { viewController, _ in
                 print("ViewController did appear")
                 print("Title: \(viewController.title ?? "")")
             })

Example/iOSCocoapodsStaticExample/ViewController.swift

@@ -20,7 +20,7 @@ class ViewController: UIViewController {
     func hook() {
         // hook
         do {
-            try hookBefore(object: self, selector: #selector(UIViewController.viewDidAppear(_:)), closure: { viewController, _ in
+            try ObjectHook(self).hookBefore(#selector(UIViewController.viewDidAppear(_:)), closure: { viewController, _ in
                 print("ViewController did appear")
                 print("Title: \(viewController.title ?? "")")
             })

README.md

@@ -21,7 +21,7 @@ class TestObject { // No need to inherit from NSObject.
 
 let obj = TestObject()
 
-let token = try hookBefore(object: obj, selector: #selector(TestObject.testMethod)) {
+let token = try ObjectHook(obj).hookBefore(#selector(TestObject.testMethod)) {
     print("Before executing `testMethod`")
 }
 
@@ -40,7 +40,7 @@ class TestObject {
 
 let obj = TestObject()
 
-let token = try hookAfter(object: obj, selector: #selector(TestObject.testMethod(_:)), closure: { obj, sel, parameter in
+let token = try ObjectHook(obj).hookAfter(#selector(TestObject.testMethod(_:)), closure: { obj, sel, parameter in
     print("After executing `testMethod` with parameter: \(parameter)")
 } as @convention(block) ( // Using `@convention(block)` to declares a Swift closure as an Objective-C block
     AnyObject, // `obj` Instance
@@ -66,7 +66,7 @@ class Math {
 
 let math = Math()
 
-try hookInstead(object: math, selector: #selector(Math.double(_:)), closure: { original, obj, sel, number in
+try ObjectHook(math).hook(#selector(Math.double(_:)), closure: { original, obj, sel, number in
     print("Before executing `double`")
     let originalResult = original(obj, sel, number)
     print("After executing `double`, got result \(originalResult)")

SwiftHook/Classes/Hook/NSObject+SelectorName.swift

@@ -0,0 +1,112 @@
+//
+//  NSObject+SelectorName.swift
+//
+//
+//  Created by Florian Zand on 06.05.25.
+//
+
+import Foundation
+
+extension PartialKeyPath {
+    func getterName() throws -> String where Root: AnyObject {
+        guard let getterName = _kvcKeyPathString else {
+            throw SwiftHookError.nonObjcProperty
+        }
+        return getterName
+    }
+
+    func setterName() throws -> String where Root: AnyObject {
+        guard let setterName = NSObject.setterName(for: try getterName(), _class: Root.self) else {
+            throw SwiftHookError.nonObjcProperty
+        }
+        return setterName
+    }
+
+    func getterName<T>() throws -> String where Root == T.Type, T: AnyObject {
+        guard let getterName = _kvcKeyPathString else {
+            throw SwiftHookError.nonObjcProperty
+        }
+        return getterName
+    }
+
+    func setterName<T>() throws -> String where Root == T.Type, T: AnyObject {
+        guard let setterName = NSObject.setterName(for: try getterName(), _class: T.self) else {
+            throw SwiftHookError.nonObjcProperty
+        }
+        return setterName
+    }
+}
+
+fileprivate extension NSObject {
+    static func setterName(for getterName: String, _class: AnyClass) -> String? {
+        var names: [String] = []
+        if getterName.hasPrefix("is") {
+            names.append("set\(getterName.dropFirst(2).uppercasedFirst()):")
+        } else if getterName.hasPrefix("get") {
+            names.append("set\(getterName.dropFirst(3).uppercasedFirst()):")
+        }
+        names.append("set\(getterName.uppercasedFirst()):")
+        for name in names {
+            if class_respondsToSelector(_class, NSSelectorFromString(name)) {
+                return name
+            }
+        }
+
+        let getterSelector = Selector(getterName)
+        var currentClass: AnyClass? = _class
+        while let c = currentClass {
+            var propertyCount: UInt32 = 0
+            guard let properties = class_copyPropertyList(c, &propertyCount) else {
+                currentClass = class_getSuperclass(c)
+                continue
+            }
+            defer { free(properties) }
+
+            for i in 0..<propertyCount {
+                let property = properties[Int(i)]
+                let nameCStr = property_getName(property)
+                let propName = String(cString: nameCStr)
+
+                let getterSel: Selector
+                if let getterAttr = property.attribute(for: "G") {
+                    getterSel = Selector(getterAttr)
+                } else {
+                    getterSel = Selector(propName)
+                }
+
+                if getterSel == getterSelector {
+                    if let setterAttr = property.attribute(for: "S") {
+                        return setterAttr
+                    } else {
+                        return "set\(propName.uppercasedFirst()):"
+                    }
+                }
+            }
+            currentClass = class_getSuperclass(c)
+        }
+        return nil
+    }
+}
+
+fileprivate extension objc_property_t {
+    func attribute(for key: String) -> String? {
+        var count: UInt32 = 0
+        guard let attrs = property_copyAttributeList(self, &count) else { return nil }
+        defer { free(attrs) }
+        for i in 0..<count {
+            let attr = attrs[Int(i)]
+            if String(cString: attr.name) == key {
+                return String(cString: attr.value)
+            }
+        }
+        return nil
+    }
+}
+
+
+fileprivate extension StringProtocol {
+    func uppercasedFirst() -> String {
+        if isEmpty { return String(self) }
+        return prefix(1).uppercased() + dropFirst()
+    }
+}