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mirror of https://github.com/YPLiang19/Mango synced 2025-07-07 21:55:49 +00:00

Support to Fix Swift

This commit is contained in:
Pengliang Yong
2022-03-10 18:01:59 +08:00
parent db27d51d60
commit d0ba77ffcb
5 changed files with 670 additions and 28 deletions

View File

@ -43,32 +43,18 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
if !writeResult {
return true
}
let docPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).last
let encryptedScriptPath = docPath!.appending("/demo_encrypted.mg")
let encryptedScriptURL = URL.init(fileURLWithPath: encryptedScriptPath)
let context = MFContext.init(aes128Key: aes128Key, iv: aes128Iv)
context.evalMangoScript(with: encryptedScriptURL)
return true
}
// MARK: UISceneSession Lifecycle
func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
// Called when a new scene session is being created.
// Use this method to select a configuration to create the new scene with.
return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
}
func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
// Called when the user discards a scene session.
// If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
// Use this method to release any resources that were specific to the discarded scenes, as they will not return.
}
}

View File

@ -13,14 +13,9 @@
void testRuntie(void) {
Class vcClazz = objc_getClass("MangoFixSwiftDylibTest.SuperMyController");
unsigned int outCount = 0;
Method *methods = class_copyMethodList(vcClazz, &outCount);
for (int i = 0; i < outCount; i++) {
Method m = methods[i];
NSString *name = NSStringFromSelector(method_getName(m));
printf("Method: %s, imp: %p\n", name.UTF8String, method_getImplementation(m));
}
void *ptr = NSSearchPathForDirectoriesInDomains;
NSLog(@"%p", ptr);
}

View File

@ -209,7 +209,7 @@ class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSour
@objc
dynamic
func conditionsAnnotationExample() {
self.resultView.text = "here is OC method";
self.resultView.text = "here is Swift method";
}

View File

@ -2,11 +2,304 @@
demo.mg
*/
// 给Swift中带模块名的MangoFixSwiftDylibTest.CustomView类声明别名CustomView必须先声明后使用
@SwiftClassAlias MangoFixSwiftDylibTest.CustomView CustomView;
// 修复MangoFixSwfitDemo模块中的ViewController类
// 修复MangoFixSwfitDemo模块中的ViewController类, 注意:@SwiftModule注解中的字符串参数时C字符串不是OC字符串对象
@SwiftModule("MangoFixSwfitDemo")
class ViewController : UIViewController {
class ViewController:UIViewController {
- (void)sequentialStatementExample {
//变量定义
NSString *text = @"1";
self.resultView.text = text;
}
- (void)ifStatementExample {
int a = 2;
int b = 2;
NSString *text;
if(a > b){
text = @"执行结果: a > b";
}else if (a == b){
text = @"执行结果: a == b";
}else{
text = @"执行结果: a < b";
}
self.resultView.text = text;
}
- (void)switchStatementExample {
int a = 2;
NSString *text;
switch(a){
case 1:{
text = @"match 1";
break;
}
case 2:{} //case 后面的一对花括号不可以省略
case 3:{
text = @"match 2 or 3";
break;
}
case 4:{
text = @"match 4";
break;
}
default:{
text = @"match default";
}
}
self.resultView.text = text;
}
- (void)forStatementExample {
NSString *text = @"";
for(int i = 0; i < 20; i++){
text = text + i + @", ";
if(i == 10){
break;
}
}
self.resultView.text = text;
}
- (void)forEachStatementExample {
NSArray *arr = @[@"a", @"b", @"c", @"d", @"e", @"f", @"g", @"g", @"i", @"j",@"k"];
NSString *text = @"";
for(id element in arr){
text = text + element + @", ";
if(element.isEqualToString:(@"i")){
break;
}
}
self.resultView.text = text;
}
- (void)whileStatementExample {
int a;
while(a < 10){
if(a == 5){
break;
}
a++;
}
self.resultView.text = @""+a;
}
- (void)doWhileStatementExample {
int a = 0;
do{
a++;
}while(NO);
self.resultView.text = @""+a;
}
- (void)blockStatementExample {
Block catStringBlock = ^NSString *(NSString *str1, NSString *str2){
NSString *result = str1.stringByAppendingString:(str2);
return result;
};
NSString *result = catStringBlock(@"hello ", @"world!");
self.resultView.text = result;
}
// 当脚步中的方法名和Swift中方法名不一致时利用MethodName注解指明Swift中的方法名
@MethodName("swiftMethodParamPassingExampleWithBOOLArg:intArg:uintArg:blockArg:objArg:")
- (void)paramPassingExampleWithBOOLArg:(BOOL)BOOLArg intArg:(int) intArg uintArg:(NSUInteger)uintArg blockArg:(Block)blockArg objArg:(id)objArg {
NSString *text = @"";
text += @"BOOLArg:" + BOOLArg + @",\n";
text += @"intArg:" + intArg + @",\n";
text += @"uintArg:" + uintArg + @",\n";
text += @"Block执行结果:" + blockArg(@"hello", @"mango") + @"\n";
text += @"objArg:" + objArg;
self.resultView.text = text;
}
@MethodName("paramPassingExampleWithStrutWithRect:")
- (struct CGRect)paramPassingExampleWithStrut:(struct CGRect)rect {
struct CGRect ret = rect;
ret.origin.x = ret.origin.x + 1;
ret.origin.y = ret.origin.y + 1;
ret.size.width = ret.size.width + 1;
ret.size.height = ret.size.height + 1;
return ret;
}
- (Block)returnBlockExample {
NSString *prefix = @"mango: ";
Block catStringBlock = ^NSString *(NSString *str1, NSString *str2){
NSString *result = str1.stringByAppendingString:(str2);
return prefix + result;
};
return catStringBlock;
}
- (void)callOriginalImp {
self.ORGcallOriginalImp();
}
- (void)createAndOpenNewViewControllerExample {
SubMyController *vc = SubMyController.alloc().init();
self.navigationController.pushViewController:animated:(vc,YES);
}
//类方法替换示例
+ (void)classMethodExapleWithInstance:(ViewController *)vc {
vc.resultView.text = @"here is Mango Class Method " + self;
}
//条件注释示例
@If($systemVersion.doubleValue() > 16.0 )
- (void)conditionsAnnotationExample {
self.resultView.text = @"here is Mango method";
}
//GCD示例
- (void)gcdExample {
dispatch_queue_t queue = dispatch_queue_create("com.plliang19.mango", DISPATCH_QUEUE_CONCURRENT);
dispatch_async(queue, ^{
NSLog(@"mango dispatch_async");
});
dispatch_sync(queue, ^{
NSLog(@"mango dispatch_sync");
});
}
- (void)staticVarAndGetVarAddressOperExample {
static int i = 0;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
i++;
});
self.resultView.text = @""+i;
}
- (void)cfuntionVarExample{
int NSDocumentDirectory = 9;
int NSUserDomainMask = 1;
int O_WRONLY = 0x0001;
uint S_IRWXU = 0000700;
CFunction<id, int, int, BOOL> NSSearchPathForDirectoriesInDomains = CFunction("NSSearchPathForDirectoriesInDomains");
CFunction<int, char *, int, int> open = CFunction("open");
CFunction<size_t, int, void *, size_t> write = CFunction("write");
CFunction<int, int> close = CFunction("close");
NSString *doc = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).lastObject;
NSString *path = doc.stringByAppendingPathComponent:(@"MangoFxi.html");
NSFileManager *fileManager = NSFileManager.defaultManager();
if (!fileManager.fileExistsAtPath:(path)) {
BOOL ret = fileManager.createFileAtPath:contents:attributes:(path, nil, nil);
if (!ret) {
self.resultView.text = @"创建文件失败";
return;
}
}
int fd = open(path.UTF8String,O_WRONLY, S_IRWXU);
if (fd < 0) {
self.resultView.text = @"打开文件失败";
return;
}
NSURL *url = NSURL.URLWithString:(@"https://www.qq.com");
NSData *data = NSData.dataWithContentsOfURL:(url);
write(fd, data.bytes, data.length);
close(fd);
self.resultView.text = @"文件写入成功:" + path;
}
- (void)typedefExaple{
self.resultView.text = @"typedef long alias_long;";
}
}
int a = 1;
@SwiftModule("MangoFixSwiftDylibTest")
class SuperMyController : UIViewController {
/*
- (void)viewDidLoad {
super.viewDidLoad();
self.view.backgroundColor = UIColor.blueColor();
self.testMasonry();
}
*/
- (void)testMasonry {
UIView *superview = self.view;
UIView *view1 = UIView.alloc().init();
view1.translatesAutoresizingMaskIntoConstraints = NO;
view1.backgroundColor = UIColor.greenColor();
superview.addSubview:(view1);
struct UIEdgeInsets padding = UIEdgeInsetsMake(10, 10, 10, 10);
view1.mas_makeConstraints:(^(MASConstraintMaker *make) {
make.top.equalTo()(superview.mas_top).with.offset()(padding.top); //with is an optional semantic filler
make.left.equalTo()(superview.mas_left).with.offset()(padding.left);
make.bottom.equalTo()(superview.mas_bottom).with.offset()(-padding.bottom);
make.right.equalTo()(superview.mas_right).with.offset()(-padding.right);
});
}
}
// 注意:其实此处父类前的@SwiftModule("MangoFixSwiftDylibTest")注解可以省略, 因为前面已经有声明SuperMyController是在MangoFixSwiftDylibTest模块中
class SubMyController : @SwiftModule("MangoFixSwiftDylibTest") SuperMyController {
@property (strong, nonatomic) UIView *rotateView;
- (void)viewDidLoad {
super.viewDidLoad();
self.title = @"Magno 创建自定义ViewController";
double width = 100;
double height = 100;
double x = self.view.frame.size.width/2 - width/2;
double y = self.view.frame.size.height/2 - height/2;
UIView *view = CustomView.alloc().initWithFrame:(CGRectMake(x, y, width, height));
self.view.addSubview:(view);
view.backgroundColor = UIColor.redColor();
self.rotateView = view;
UILabel *label = UILabel.alloc().initWithFrame:(CGRectMake(10, 80, 350, 600));
label.numberOfLines = 100;
label.text =@" 长文本测试 : select()机制中提供一fd_set的数据结构实际上是一long类型的数组每一个数组元素都能与一打开的文件句柄不管是socket句柄还是其他文件或命名管道或设备句柄建立联系建立联系的工作由程序员完成当调用select()时由内核根据IO状态修改fd_set的内容由此来通知执行了select()的进程哪一socket或文件发生了可读或可写事件。select()机制中提供一fd_set的数据结构实际上是一long类型的数组每一个数组元素都能与一打开的文件句柄不管是socket句柄还是其他文件或命名管道或设备句柄建立联系建立联系的工作由程序员完成当调用select()时由内核根据IO状态修改fd_set的内容由此来通知执行了select()的进程哪一socket或文件发生了可读或可写事件。select()机制中提供一fd_set的数据结构实际上是一long类型的数组每一个数组元素都能与一打开的文件句柄不管是socket句柄还是其他文件或命名管道或设备句柄建立联系建立联系的工作由程序员完成当调用select()时由内核根据IO状态修改fd_set的内容由此来通知执行了select()的进程哪一socket或文件发生了可读或可写事件。select()机制中提供一fd_set的数据结构实际上是一long类型的数组每一个数组元素都能与一打开的文件句柄不管是socket句柄还是其他文件或命名管道或设备句柄建立联系建立联系的工作由程序员完成当调用select()时由内核根据IO状态修改fd_set的内容由此来通知执行了select()的进程哪一socket或文件发生了可读或可写事件。";
self.view.addSubview:(label);
__weak id weakSelf = self;
self.block = ^{
__strong ids strongSelf = weakSelf;
NSLog(strongSelf.class());
};
UIButton *btn = UIButton.alloc().initWithFrame:(CGRectMake(100, 300, 200, 50));
btn.setBackgroundColor:(UIColor.redColor());
btn.setTitle:forState:(@"test btn click", UIControlStateNormal);
btn.addTarget:action:forControlEvents:(self, @selector(btnDidClicked:), UIControlEventTouchUpInside);
self.view.addSubview:(btn);
}
- (void)btnDidClicked:(id)btn {
NSLog(btn);
}
}

374
README.md
View File

@ -4,10 +4,10 @@ MangoFix 学习讨论QQ群766215773
# Mango
MangoFix is a DSL which syntax is very similar to Objective-CMangoFix is also an iOS App hotfix SDK. You can use MangoFix method replace any Objective-C method.
MangoFix is a DSL which syntax is very similar to Objective-CMangoFix is also an iOS App hotfix SDK. You can use MangoFix method replace any Objective-C or Swift method (Support Swfit from MangoFxi 1.5).
## Example
## Objctive-C Example
```objc
#import "AppDelegate.h"
#import <MangoFix/MangoFix.h>
@ -88,6 +88,60 @@ class ViewController:UIViewController{
```
## SWfit Example
```swift
import UIKit
//import MangoFix
let aes128Key = "123456"
let aes128Iv = "abcdef"
@main
class AppDelegate: UIResponder, UIApplicationDelegate {
func encryptPlainScirptToDocument() -> Bool {
let scriptURL = Bundle.main.url(forResource: "demo.mg", withExtension: nil)
let script = try? String.init(contentsOf: scriptURL!)
guard script != nil else {
return false
}
let scriptData = script!.data(using: String.Encoding.utf8)
guard scriptData != nil else {
return false
}
let nsscriptData = NSData.init(data: scriptData!)
let enecryptedData = nsscriptData.aes128ParmEncrypt(withKey: aes128Key, iv: aes128Iv)
guard enecryptedData != nil else {
return false
}
let docPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).last
let encryptedScriptPath = docPath!.appending("/demo_encrypted.mg")
let encryptedScriptURL = URL.init(fileURLWithPath: encryptedScriptPath)
try! enecryptedData?.write(to: encryptedScriptURL)
return true
}
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
let writeResult = encryptPlainScirptToDocument();
if !writeResult {
return true
}
let docPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).last
let encryptedScriptPath = docPath!.appending("/demo_encrypted.mg")
let encryptedScriptURL = URL.init(fileURLWithPath: encryptedScriptPath)
let context = MFContext.init(aes128Key: aes128Key, iv: aes128Iv)
context.evalMangoScript(with: encryptedScriptURL)
return true
}
}
```
## Installation
### CocoaPods
1. Add `pod 'MangoFix'` to your Podfile.
@ -115,7 +169,7 @@ NSString *script = [NSString stringWithContentsOfFile:sourcePath encoding:NSUTF8
```
### Mango
#### Quick start
#### Objective-C Quick start
```objc
/**
@ -375,9 +429,323 @@ class SubMyController:SuperMyController {
}
```
#### Swift Quick start
```objc
/**
demo.mg
*/
// 给Swift中带模块名的MangoFixSwiftDylibTest.CustomView类声明别名CustomView必须先声明后使用
@SwiftClassAlias MangoFixSwiftDylibTest.CustomView CustomView;
// 修复MangoFixSwfitDemo模块中的ViewController类, 注意:@SwiftModule注解中的字符串参数时C字符串不是OC字符串对象
@SwiftModule("MangoFixSwfitDemo")
class ViewController:UIViewController {
- (void)sequentialStatementExample {
//变量定义
NSString *text = @"1";
self.resultView.text = text;
}
- (void)ifStatementExample {
int a = 2;
int b = 2;
NSString *text;
if(a > b){
text = @"执行结果: a > b";
}else if (a == b){
text = @"执行结果: a == b";
}else{
text = @"执行结果: a < b";
}
self.resultView.text = text;
}
- (void)switchStatementExample {
int a = 2;
NSString *text;
switch(a){
case 1:{
text = @"match 1";
break;
}
case 2:{} //case 后面的一对花括号不可以省略
case 3:{
text = @"match 2 or 3";
break;
}
case 4:{
text = @"match 4";
break;
}
default:{
text = @"match default";
}
}
self.resultView.text = text;
}
- (void)forStatementExample {
NSString *text = @"";
for(int i = 0; i < 20; i++){
text = text + i + @", ";
if(i == 10){
break;
}
}
self.resultView.text = text;
}
- (void)forEachStatementExample {
NSArray *arr = @[@"a", @"b", @"c", @"d", @"e", @"f", @"g", @"g", @"i", @"j",@"k"];
NSString *text = @"";
for(id element in arr){
text = text + element + @", ";
if(element.isEqualToString:(@"i")){
break;
}
}
self.resultView.text = text;
}
- (void)whileStatementExample {
int a;
while(a < 10){
if(a == 5){
break;
}
a++;
}
self.resultView.text = @""+a;
}
- (void)doWhileStatementExample {
int a = 0;
do{
a++;
}while(NO);
self.resultView.text = @""+a;
}
- (void)blockStatementExample {
Block catStringBlock = ^NSString *(NSString *str1, NSString *str2){
NSString *result = str1.stringByAppendingString:(str2);
return result;
};
NSString *result = catStringBlock(@"hello ", @"world!");
self.resultView.text = result;
}
// 当脚步中的方法名和Swift中方法名不一致时利用MethodName注解指明Swift中的方法名
@MethodName("swiftMethodParamPassingExampleWithBOOLArg:intArg:uintArg:blockArg:objArg:")
- (void)paramPassingExampleWithBOOLArg:(BOOL)BOOLArg intArg:(int) intArg uintArg:(NSUInteger)uintArg blockArg:(Block)blockArg objArg:(id)objArg {
NSString *text = @"";
text += @"BOOLArg:" + BOOLArg + @",\n";
text += @"intArg:" + intArg + @",\n";
text += @"uintArg:" + uintArg + @",\n";
text += @"Block执行结果:" + blockArg(@"hello", @"mango") + @"\n";
text += @"objArg:" + objArg;
self.resultView.text = text;
}
@MethodName("paramPassingExampleWithStrutWithRect:")
- (struct CGRect)paramPassingExampleWithStrut:(struct CGRect)rect {
struct CGRect ret = rect;
ret.origin.x = ret.origin.x + 1;
ret.origin.y = ret.origin.y + 1;
ret.size.width = ret.size.width + 1;
ret.size.height = ret.size.height + 1;
return ret;
}
- (Block)returnBlockExample {
NSString *prefix = @"mango: ";
Block catStringBlock = ^NSString *(NSString *str1, NSString *str2){
NSString *result = str1.stringByAppendingString:(str2);
return prefix + result;
};
return catStringBlock;
}
- (void)callOriginalImp {
self.ORGcallOriginalImp();
}
- (void)createAndOpenNewViewControllerExample {
SubMyController *vc = SubMyController.alloc().init();
self.navigationController.pushViewController:animated:(vc,YES);
}
//类方法替换示例
+ (void)classMethodExapleWithInstance:(ViewController *)vc {
vc.resultView.text = @"here is Mango Class Method " + self;
}
//条件注释示例
@If($systemVersion.doubleValue() > 16.0 )
- (void)conditionsAnnotationExample {
self.resultView.text = @"here is Mango method";
}
//GCD示例
- (void)gcdExample {
dispatch_queue_t queue = dispatch_queue_create("com.plliang19.mango", DISPATCH_QUEUE_CONCURRENT);
dispatch_async(queue, ^{
NSLog(@"mango dispatch_async");
});
dispatch_sync(queue, ^{
NSLog(@"mango dispatch_sync");
});
}
- (void)staticVarAndGetVarAddressOperExample {
static int i = 0;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
i++;
});
self.resultView.text = @""+i;
}
- (void)cfuntionVarExample{
int NSDocumentDirectory = 9;
int NSUserDomainMask = 1;
int O_WRONLY = 0x0001;
uint S_IRWXU = 0000700;
CFunction<id, int, int, BOOL> NSSearchPathForDirectoriesInDomains = CFunction("NSSearchPathForDirectoriesInDomains");
CFunction<int, char *, int, int> open = CFunction("open");
CFunction<size_t, int, void *, size_t> write = CFunction("write");
CFunction<int, int> close = CFunction("close");
NSString *doc = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).lastObject;
NSString *path = doc.stringByAppendingPathComponent:(@"MangoFxi.html");
NSFileManager *fileManager = NSFileManager.defaultManager();
if (!fileManager.fileExistsAtPath:(path)) {
BOOL ret = fileManager.createFileAtPath:contents:attributes:(path, nil, nil);
if (!ret) {
self.resultView.text = @"创建文件失败";
return;
}
}
int fd = open(path.UTF8String,O_WRONLY, S_IRWXU);
if (fd < 0) {
self.resultView.text = @"打开文件失败";
return;
}
NSURL *url = NSURL.URLWithString:(@"https://www.qq.com");
NSData *data = NSData.dataWithContentsOfURL:(url);
write(fd, data.bytes, data.length);
close(fd);
self.resultView.text = @"文件写入成功:" + path;
}
- (void)typedefExaple{
self.resultView.text = @"typedef long alias_long;";
}
}
int a = 1;
@SwiftModule("MangoFixSwiftDylibTest")
class SuperMyController : UIViewController {
/*
- (void)viewDidLoad {
super.viewDidLoad();
self.view.backgroundColor = UIColor.blueColor();
self.testMasonry();
}
*/
- (void)testMasonry {
UIView *superview = self.view;
UIView *view1 = UIView.alloc().init();
view1.translatesAutoresizingMaskIntoConstraints = NO;
view1.backgroundColor = UIColor.greenColor();
superview.addSubview:(view1);
struct UIEdgeInsets padding = UIEdgeInsetsMake(10, 10, 10, 10);
view1.mas_makeConstraints:(^(MASConstraintMaker *make) {
make.top.equalTo()(superview.mas_top).with.offset()(padding.top); //with is an optional semantic filler
make.left.equalTo()(superview.mas_left).with.offset()(padding.left);
make.bottom.equalTo()(superview.mas_bottom).with.offset()(-padding.bottom);
make.right.equalTo()(superview.mas_right).with.offset()(-padding.right);
});
}
}
// 注意:其实此处父类前的@SwiftModule("MangoFixSwiftDylibTest")注解可以省略, 因为前面已经有声明SuperMyController是在MangoFixSwiftDylibTest模块中
class SubMyController : @SwiftModule("MangoFixSwiftDylibTest") SuperMyController {
@property (strong, nonatomic) UIView *rotateView;
- (void)viewDidLoad {
super.viewDidLoad();
self.title = @"Magno 创建自定义ViewController";
double width = 100;
double height = 100;
double x = self.view.frame.size.width/2 - width/2;
double y = self.view.frame.size.height/2 - height/2;
UIView *view = CustomView.alloc().initWithFrame:(CGRectMake(x, y, width, height));
self.view.addSubview:(view);
view.backgroundColor = UIColor.redColor();
self.rotateView = view;
UILabel *label = UILabel.alloc().initWithFrame:(CGRectMake(10, 80, 350, 600));
label.numberOfLines = 100;
label.text =@" 长文本测试 : select()机制中提供一fd_set的数据结构实际上是一long类型的数组每一个数组元素都能与一打开的文件句柄不管是socket句柄还是其他文件或命名管道或设备句柄建立联系建立联系的工作由程序员完成当调用select()时由内核根据IO状态修改fd_set的内容由此来通知执行了select()的进程哪一socket或文件发生了可读或可写事件。select()机制中提供一fd_set的数据结构实际上是一long类型的数组每一个数组元素都能与一打开的文件句柄不管是socket句柄还是其他文件或命名管道或设备句柄建立联系建立联系的工作由程序员完成当调用select()时由内核根据IO状态修改fd_set的内容由此来通知执行了select()的进程哪一socket或文件发生了可读或可写事件。select()机制中提供一fd_set的数据结构实际上是一long类型的数组每一个数组元素都能与一打开的文件句柄不管是socket句柄还是其他文件或命名管道或设备句柄建立联系建立联系的工作由程序员完成当调用select()时由内核根据IO状态修改fd_set的内容由此来通知执行了select()的进程哪一socket或文件发生了可读或可写事件。select()机制中提供一fd_set的数据结构实际上是一long类型的数组每一个数组元素都能与一打开的文件句柄不管是socket句柄还是其他文件或命名管道或设备句柄建立联系建立联系的工作由程序员完成当调用select()时由内核根据IO状态修改fd_set的内容由此来通知执行了select()的进程哪一socket或文件发生了可读或可写事件。";
self.view.addSubview:(label);
__weak id weakSelf = self;
self.block = ^{
__strong ids strongSelf = weakSelf;
NSLog(strongSelf.class());
};
UIButton *btn = UIButton.alloc().initWithFrame:(CGRectMake(100, 300, 200, 50));
btn.setBackgroundColor:(UIColor.redColor());
btn.setTitle:forState:(@"test btn click", UIControlStateNormal);
btn.addTarget:action:forControlEvents:(self, @selector(btnDidClicked:), UIControlEventTouchUpInside);
self.view.addSubview:(btn);
}
- (void)btnDidClicked:(id)btn {
NSLog(btn);
}
}
```
#### Mango Type usage
Mango support type as fllow: