using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Text;

namespace Sog
{
    /// <summary>
    /// 16
    /// </summary>
    unsafe public struct StructString16
    {
        const int BuffSize = 16;

        public fixed char m_buff[BuffSize];

        public int Length()
        {
            int length = 0;

            fixed (char* p = m_buff)
            {
                for (int i = 0; i < BuffSize; i++)
                {
                    if(p[i] != '\0')
                    {
                        length++;
                    }
                }
            }

            return length;
        }

        public void Init()
        {
            fixed(char* p = m_buff)
            {
                for(int i=0; i< BuffSize; i++)
                {
                    p[i] = '\0';
                }
            }
        }

        public void CopyFromString(string value)
        {
            fixed (char* p = m_buff)
            {
                p[0] = '\0';

                if(string.IsNullOrEmpty(value))
                {
                    return;
                }

                for(int i=0; i< value.Length && i< BuffSize; i++)
                {
                    p[i] = value[i];
                }
            }
        }

        public override string ToString()
        {
            StringBuilder sb = new StringBuilder();

            fixed (char* p = m_buff)
            {
                for (int i = 0; i < BuffSize; i++)
                {
                    if (p[i] != '\0')
                    {
                        sb.Append(p[i]);
                    }
                    else
                    {
                        break;
                    }
                }
            }

            return sb.ToString();
        }
    }


    /// <summary>
    /// 32
    /// </summary>
    unsafe public struct StructString32
    {
        const int BuffSize = 32;

        public fixed char m_buff[BuffSize];

        public int Length()
        {
            int length = 0;

            fixed (char* p = m_buff)
            {
                for (int i = 0; i < BuffSize; i++)
                {
                    if (p[i] != '\0')
                    {
                        length++;
                    }
                }
            }

            return length;
        }

        public void Init()
        {
            fixed (char* p = m_buff)
            {
                for (int i = 0; i < BuffSize; i++)
                {
                    p[i] = '\0';
                }
            }
        }

        public void CopyFromString(string value)
        {
            fixed (char* p = m_buff)
            {
                p[0] = '\0';

                if (string.IsNullOrEmpty(value))
                {
                    return;
                }

                for (int i = 0; i < value.Length && i < BuffSize; i++)
                {
                    p[i] = value[i];
                }
            }
        }

        public override string ToString()
        {
            StringBuilder sb = new StringBuilder();

            fixed (char* p = m_buff)
            {
                for (int i = 0; i < BuffSize; i++)
                {
                    if (p[i] != '\0')
                    {
                        sb.Append(p[i]);
                    }
                    else
                    {
                        break;
                    }
                }
            }

            return sb.ToString();
        }
    }


    /// <summary>
    /// 64
    /// </summary>
    unsafe public struct StructString64
    {
        const int BuffSize = 64;

        public fixed char m_buff[BuffSize];

        public int Length()
        {
            int length = 0;

            fixed (char* p = m_buff)
            {
                for (int i = 0; i < BuffSize; i++)
                {
                    if (p[i] != '\0')
                    {
                        length++;
                    }
                }
            }

            return length;
        }

        public void Init()
        {
            fixed (char* p = m_buff)
            {
                for (int i = 0; i < BuffSize; i++)
                {
                    p[i] = '\0';
                }
            }
        }

        public void CopyFromString(string value)
        {
            fixed (char* p = m_buff)
            {
                p[0] = '\0';

                if (string.IsNullOrEmpty(value))
                {
                    return;
                }

                for (int i = 0; i < value.Length && i < BuffSize; i++)
                {
                    p[i] = value[i];
                }
            }
        }

        public override string ToString()
        {
            StringBuilder sb = new StringBuilder();

            fixed (char* p = m_buff)
            {
                for (int i = 0; i < BuffSize; i++)
                {
                    if (p[i] != '\0')
                    {
                        sb.Append(p[i]);
                    }
                    else
                    {
                        break;
                    }
                }
            }

            return sb.ToString();
        }
    }

    /// <summary>
    /// 128
    /// </summary>
    unsafe public struct StructString128
    {
        const int BuffSize = 128;

        public fixed char m_buff[BuffSize];

        public int Length()
        {
            int length = 0;

            fixed (char* p = m_buff)
            {
                for (int i = 0; i < BuffSize; i++)
                {
                    if (p[i] != '\0')
                    {
                        length++;
                    }
                }
            }

            return length;
        }

        public void Init()
        {
            fixed (char* p = m_buff)
            {
                for (int i = 0; i < BuffSize; i++)
                {
                    p[i] = '\0';
                }
            }
        }

        public void CopyFromString(string value)
        {
            fixed (char* p = m_buff)
            {
                p[0] = '\0';

                if (string.IsNullOrEmpty(value))
                {
                    return;
                }

                for (int i = 0; i < value.Length && i < BuffSize; i++)
                {
                    p[i] = value[i];
                }
            }
        }

        public override string ToString()
        {
            StringBuilder sb = new StringBuilder();

            fixed (char* p = m_buff)
            {
                for (int i = 0; i < BuffSize; i++)
                {
                    if (p[i] != '\0')
                    {
                        sb.Append(p[i]);
                    }
                    else
                    {
                        break;
                    }
                }
            }

            return sb.ToString();
        }
    }

    /// <summary>
    /// 256
    /// </summary>
    unsafe public struct StructString256
    {
        const int BuffSize = 256;

        public fixed char m_buff[BuffSize];

        public int Length()
        {
            int length = 0;

            fixed (char* p = m_buff)
            {
                for (int i = 0; i < BuffSize; i++)
                {
                    if (p[i] != '\0')
                    {
                        length++;
                    }
                }
            }

            return length;
        }

        public void Init()
        {
            fixed (char* p = m_buff)
            {
                for (int i = 0; i < BuffSize; i++)
                {
                    p[i] = '\0';
                }
            }
        }

        public void CopyFromString(string value)
        {
            fixed (char* p = m_buff)
            {
                p[0] = '\0';

                if (string.IsNullOrEmpty(value))
                {
                    return;
                }

                for (int i = 0; i < value.Length && i < BuffSize; i++)
                {
                    p[i] = value[i];
                }
            }
        }

        public override string ToString()
        {
            StringBuilder sb = new StringBuilder();

            fixed (char* p = m_buff)
            {
                for (int i = 0; i < BuffSize; i++)
                {
                    if (p[i] != '\0')
                    {
                        sb.Append(p[i]);
                    }
                    else
                    {
                        break;
                    }
                }
            }

            return sb.ToString();
        }
    }
}