DTO printer

DtoPrinter.swift

import Foundation
import PortfolioSummaryClient

protocol ClassInfo : CustomDebugStringConvertible  {
    var className: String { get }
    var properties: String { get }
}

extension NSObject : ClassInfo {
    
    var className: String {
        return NSStringFromClass(type(of: self))
    }
    
    var properties: String {
        return printOut(object: self, prefix: "")
    }
    
    var debugDescription: String {
        return """
        \r\n
        ---- \(className) ----
        \(properties)
        -----------------
        """
    }
    
    private func printOut(object: AnyObject, prefix: String) -> String {
        var outCount : UInt32 = 0
        guard
            let properties = class_copyPropertyList(type(of: object), &outCount)
            else {
                return self.description
        }
        
        var description = ""
        for i in 0..<Int(outCount) {
            guard
                let label = String(cString: property_getName(properties[i]), encoding: String.Encoding.utf8),
                let value = object.value(forKey: label),
                label != "superclass",
                label != "description",
                label != "debugDescription",
                label != "hash",
                !label.contains("_")
                
            else { continue };
            
            if let array = value as? [AnyObject] {
                description += "\(prefix)\(label):\r"
                var n = 0
                for item in array {
                    description += "\(prefix)[\(n)]:\r"
                    description += "\(prefix)\(printOut(object: item, prefix: prefix + "-"))\r"
                    n += 1
                }
            } else if let item = value as? Additions {
                description += "\(prefix)\(label):\r"
                description += "\(prefix)\(printOut(object: item, prefix: prefix + "-"))\r"
            } else {
                description += "\(prefix)\(label): \(value)\r"
            }
        }
        
        return description
    }
}