//
// WSKPrintJsonLog.h
// SuperSaleApp
//
// Created by 王盛魁 on 2020/3/5.
// Copyright © 2020 wangsk. All rights reserved.
//
#import <Foundation/Foundation.h>
//
// WSKPrintJsonLog.m
// SuperSaleApp
//
// Created by 王盛魁 on 2020/3/5.
// Copyright © 2020 wangsk. All rights reserved.
//
#import "WSKPrintJsonLog.h"
#import <objc/runtime.h>
#pragma mark - 方法交换
static inline void sq_swizzleSelector(Class class, SEL originalSelector, SEL swizzledSelector) {
Method originalMethod = class_getInstanceMethod(class, originalSelector);
Method swizzledMethod = class_getInstanceMethod(class, swizzledSelector);
BOOL didAddMethod = class_addMethod(class,
originalSelector,
method_getImplementation(swizzledMethod),
method_getTypeEncoding(swizzledMethod));
if (didAddMethod) {
class_replaceMethod(class,
swizzledSelector,
method_getImplementation(originalMethod),
method_getTypeEncoding(originalMethod));
} else {
method_exchangeImplementations(originalMethod, swizzledMethod);
}
}
#pragma mark - NSObject分类
@implementation NSObject (WSKJSON)
//将obj转换成json字符串。如果失败则返回nil.
- (NSString *)convertToJsonString {
if (![NSJSONSerialization isValidJSONObject:self]) return nil;
NSError *error = nil;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:self options:NSJSONWritingPrettyPrinted error:&error];
if (error || !jsonData) return nil;
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
return jsonString;
}
@end
#pragma mark - NSDictionary分类
@implementation NSDictionary (WSKJsonLog)
//用此方法交换系统的 descriptionWithLocale: 方法。该方法在代码打印的时候调用。
- (NSString *)sqjsonlog_descriptionWithLocale:(id)locale{
NSString *result = [self convertToJsonString];//转换成JSON格式字符串
if (!result) return [self sqjsonlog_descriptionWithLocale:locale];//如果无法转换,就使用原先的格式
return result;
}
//用此方法交换系统的 descriptionWithLocale:indent:方法。功能同上。
- (NSString *)sqjsonlog_descriptionWithLocale:(id)locale indent:(NSUInteger)level {
NSString *result = [self convertToJsonString];
if (!result) return [self sqjsonlog_descriptionWithLocale:locale indent:level];
return result;
}
//用此方法交换系统的 debugDescription 方法。该方法在控制台使用po打印的时候调用。
- (NSString *)sqjsonlog_debugDescription{
NSString *result = [self convertToJsonString];
if (!result) return [self sqjsonlog_debugDescription];
return result;
}
//在load方法中完成方法交换
+ (void)load {
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
Class class = [self class];
sq_swizzleSelector(class, @selector(descriptionWithLocale:), @selector(sqjsonlog_descriptionWithLocale:));
sq_swizzleSelector(class, @selector(descriptionWithLocale:indent:), @selector(sqjsonlog_descriptionWithLocale:indent:));
sq_swizzleSelector(class, @selector(debugDescription), @selector(sqjsonlog_debugDescription));
});
}
@end
#pragma mark - NSArray分类
@implementation NSArray (WSKJsonLog)
//用此方法交换系统的 descriptionWithLocale: 方法。该方法在代码打印的时候调用。
- (NSString *)sqjsonlog_descriptionWithLocale:(id)locale{
NSString *result = [self convertToJsonString];
if (!result) return [self sqjsonlog_descriptionWithLocale:locale];
return result;
}
//用此方法交换系统的 descriptionWithLocale:indent:方法。功能同上。
- (NSString *)sqjsonlog_descriptionWithLocale:(id)locale indent:(NSUInteger)level {
NSString *result = [self convertToJsonString];
if (!result) return [self sqjsonlog_descriptionWithLocale:locale indent:level];
return result;
}
//用此方法交换系统的 debugDescription 方法。该方法在控制台使用po打印的时候调用。
- (NSString *)sqjsonlog_debugDescription{
NSString *result = [self convertToJsonString];
if (!result) return [self sqjsonlog_debugDescription];
return result;
}
+ (void)load {
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
Class class = [self class];
sq_swizzleSelector(class, @selector(descriptionWithLocale:), @selector(sqjsonlog_descriptionWithLocale:));
sq_swizzleSelector(class, @selector(descriptionWithLocale:indent:), @selector(sqjsonlog_descriptionWithLocale:indent:));
sq_swizzleSelector(class, @selector(debugDescription), @selector(sqjsonlog_debugDescription));
});
}
@end