using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Linq;
using System.Text;

namespace EdgeTech.SonarComms.Demo
{
    class Utils
    {
        const string _versionInfo = "$Header: Utils.cs  Revision:1.3  Tue Apr 17 13:45:46 2012  mps $";
        private string versionInfo;

        public static Object BufToStruct(byte[] MyBuf, Type MyType)
        {
            GCHandle MyGC = GCHandle.Alloc(MyBuf, GCHandleType.Pinned);
            Object MyStruct = Marshal.PtrToStructure(MyGC.AddrOfPinnedObject(), MyType);  //* Copy the 'unmanaged' buffer to struct
            MyGC.Free();
            return (MyStruct);
        }

        public static bool StructToBuf(Object MyStruct, byte[] MyBuf)
        {
            return (StructToBuf(MyStruct, -1, MyBuf));
        }

        public static bool StructToBuf(Object MyStruct, int MySize, byte[] MyBuf)
        {
            int Siz = (MySize == -1) ? Marshal.SizeOf(MyStruct) : MySize;

            if (MyBuf.Length < Siz) // Marshal.SizeOf(MyStruct))
                return (false);

            //* Use the 'System.Runtime.InteropServices.Marshal services to copy TpCmd to MyBuf

            IntPtr UnBuf = Marshal.AllocCoTaskMem(Siz); //Marshal.SizeOf(MyStruct)); //* Create an 'unmanaged' buffer

            Marshal.StructureToPtr(MyStruct, UnBuf, true); //* Copy TpCmd to the 'unmanaged' buffer

            Marshal.Copy(UnBuf, MyBuf, 0, Siz); //Marshal.SizeOf(MyStruct)); //* Copy the 'unmanaged' buffer to MyBuf

            Marshal.FreeCoTaskMem(UnBuf); //* Free the 'unmanaged' buffer

            return (true);
        }

        // printThrottle is used to manage the flow of Console.WriteLine statements to the console window
        // printThrottle=5: All Console.WriteLine statements are written to display
        // printThrottle=0: No Console.WriteLine statements are written to display
        private static int printThrottle = 4;
        public static void setPrintThrottle(int k)
        {
            printThrottle = k;
        }
        public static int getPrintThrottle()
        {
            return printThrottle;
        }
        public static bool doThisPrint(int k)
        {
            if (k <= printThrottle)
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        public static void flagFatalError(string errString)
        {
            Console.WriteLine("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *");
            Console.WriteLine("*   Fatal error encountered:                                                  *");
            Console.WriteLine("*   {0}", errString);
            Console.WriteLine("*   Sonar CLI will now shut down...                                           *");
            Console.WriteLine("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *");
        }

        // The following method applies to Utils.cs only
        public string getVersionInfo()
        {
            versionInfo = _versionInfo.Remove(0, 9);
            string endStr = " mps $";
            char[] end = endStr.ToCharArray();
            versionInfo = versionInfo.TrimEnd(end);
            return versionInfo;
        }
    }
}