ClassInfo.m

//
//  ClassInfo.m
//  sentinelShuttleValidationCheck
//
//  Created by uzysjung on 2016. 1. 28..
//  Copyright © 2016년 skpdi. All rights reserved.
//

#import "ClassInfo.h"
#import "RakeClientMetricSentinelShuttle.h"
#include <objc/runtime.h>
//https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ObjCRuntimeGuide/Articles/ocrtTypeEncodings.html

@implementation ClassInfo
+ (void) run:(Class)class {
    unsigned int count;
    objc_property_t* props = class_copyPropertyList(class, &count);

    for (int i = 0; i < count; i++) {
        objc_property_t property = props[i];
        const char * name = property_getName(property);
        NSString *propertyName = [NSString stringWithCString:name encoding:NSUTF8StringEncoding];
        const char * type = property_getAttributes(property);
        NSString *attr = [NSString stringWithCString:type encoding:NSUTF8StringEncoding];
        
        NSString * typeString = [NSString stringWithUTF8String:type];
        NSArray * attributes = [typeString componentsSeparatedByString:@","];
        NSString * typeAttribute = [attributes objectAtIndex:0];
        NSString * propertyType = [typeAttribute substringFromIndex:1];
        const char * rawPropertyType = [propertyType UTF8String];
        if (strcmp(rawPropertyType, @encode(float)) == 0) {
            
        } else if (strcmp(rawPropertyType, @encode(int)) == 0) {
            
        } else if (strcmp(rawPropertyType, @encode(id)) == 0) {
            
        } else {
            
        }
        
        if ([typeAttribute hasPrefix:@"T@"]) {
            NSString * typeClassName = [typeAttribute substringWithRange:NSMakeRange(3, [typeAttribute length]-4)];  //turns @"NSDate" into NSDate
            Class typeClass = NSClassFromString(typeClassName);
            if (typeClass != nil) {
                // Here is the corresponding class even for nil values
            }
        }
        NSLog(@"Name:%@ Type:%@",propertyName,propertyType);
    }
    free(props);
}
+ (NSString *)getClassPropertyType:(Class)class propertyName:(NSString *)pName {
    NSString *ret = nil;
    unsigned int count;
    objc_property_t* props = class_copyPropertyList([RakeClientMetricSentinelShuttle class], &count);
    
    for (int i = 0; i < count; i++) {
        objc_property_t property = props[i];
        const char * name = property_getName(property);
        NSString *propertyName = [NSString stringWithCString:name encoding:NSUTF8StringEncoding];
        const char * type = property_getAttributes(property);
        
        NSString * typeString = [NSString stringWithUTF8String:type];
        NSArray * attributes = [typeString componentsSeparatedByString:@","];
        NSString * typeAttribute = [attributes objectAtIndex:0];
        NSString * propertyType = [typeAttribute substringFromIndex:1];
        const char * rawPropertyType = [propertyType UTF8String];
        NSString *realType = [propertyType stringByReplacingOccurrencesOfString:@"@" withString:@""];
        realType = [realType stringByReplacingOccurrencesOfString:@"\"" withString:@""];

//        NSLog(@"Name:%@ Type:%@",propertyName,propertyType);
        if([propertyName isEqualToString:pName]) {
            ret = realType;
            break;
        }
    }
    free(props);
 
    return ret;
}

+ (BOOL)classHasMethod:(Class)class methodName:(NSString *)mName {
    BOOL ret = false;

    int unsigned numMethods;
    Method *methods = class_copyMethodList(class, &numMethods);
    for (int i = 0; i < numMethods; i++) {
        NSString *methodName =NSStringFromSelector(method_getName(methods[i]));
//        NSLog(@"%@", methodName);
        
//        char buffer[256];
//        SEL name = method_getName(methods[i]);
//        NSLog(@"Method: %@", NSStringFromSelector(name));
//        char *returnType = method_copyReturnType(methods[i]);
//        NSLog(@"The return type is %s", returnType);
//        free(returnType);
//        // self, _cmd + any others
//        unsigned int numberOfArguments = method_getNumberOfArguments(methods[i]);
//        for(int j=0; j<numberOfArguments; j++)
//        {
//            method_getArgumentType(methods[i], j, buffer, 256);
//            NSLog(@"The type of argument %d is %s", j, buffer);
//        }
        
        
        if([methodName isEqualToString:mName]){
            ret = true;
            break;
        }
    }
    free(methods);
    return ret;
}
@end