获取当前工程Mach-O的方法名类名

1.类名

unsigned long size;
    
        uint8_t *ptrClassName = getsectiondata(&_mh_execute_header, "__TEXT", "__objc_classname", &size);
    
        NSData *dataClassName = [NSData dataWithBytesNoCopy:ptrClassName length:size freeWhenDone:NO];
    
        NSString * strClassName = [[NSString alloc]initWithData:dataClassName encoding:NSUTF8StringEncoding];
    
        NSArray * arrayClassName = [strClassName componentsSeparatedByString:@"\00"];
    
        [arrayClassName enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
    
            NSLog(@"className = %@  interger = %lu",obj, (unsigned long)idx);
    
        }];

2.方法名

unsigned long sizeMethName;
    
        uint8_t * ptrMethName = getsectiondata(&_mh_execute_header, "__TEXT", "__objc_methname", &sizeMethName);

        NSData * dataMethName = [NSData dataWithBytesNoCopy:ptrMethName length:sizeMethName freeWhenDone:NO];
    
        NSString * strMethName = [[NSString alloc]initWithData:dataMethName encoding:NSUTF8StringEncoding];

        NSArray * arrMethName = [strMethName componentsSeparatedByString:@"\00"];
    
        [arrMethName enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
    
            NSLog(@"methName = %@",obj);
    
        }];

3.可能遇到的问题

方法名或者类名遇到特殊字符, data->string的时候闪退, 那就把NSData->NSString的方法换成下面的

 NSStringEncoding enc = CFStringConvertEncodingToNSStringEncoding ( kCFStringEncodingGB_18030_2000 );

    NSString* strMethName = [[NSString alloc] initWithData:dataMethName encoding:enc];