Beispiel #1
0
        public static bool TryParseGuid(string g, out Guid guid)
        {
            int   a  = 0;
            short b  = 0;
            short c  = 0;
            byte  d  = 0;
            byte  e  = 0;
            byte  f  = 0;
            byte  g2 = 0;
            byte  h  = 0;
            byte  i  = 0;
            byte  j  = 0;
            byte  k  = 0;

            try
            {
                if (string.IsNullOrEmpty(g))
                {
                    return(false);
                }
                int num  = 0;
                int num2 = 0;
                if (char.IsWhiteSpace(g[0]) || char.IsWhiteSpace(g[g.Length - 1]))
                {
                    g = g.Trim();
                }
                if (g.IndexOf('-', 0) >= 0)
                {
                    if (g[0] == '{')
                    {
                        if (g.Length != 38 || g[37] != '}')
                        {
                            return(false);
                        }
                        num = 1;
                    }
                    else if (g[0] == '(')
                    {
                        if (g.Length != 38 || g[37] != ')')
                        {
                            return(false);
                        }
                        num = 1;
                    }
                    else if (g.Length != 36)
                    {
                        return(false);
                    }
                    if (g[8 + num] != '-' || g[13 + num] != '-' || g[18 + num] != '-' || g[23 + num] != '-')
                    {
                        return(false);
                    }
                    num2 = num;
                    a    = GuidHelper.StringToInt(g, 16, ref num2, 8);
                    num2++;
                    b = (short)GuidHelper.StringToInt(g, 16, ref num2, 4);
                    num2++;
                    c = (short)GuidHelper.StringToInt(g, 16, ref num2, 4);
                    num2++;
                    int num3 = GuidHelper.StringToInt(g, 16, ref num2, 4);
                    num2++;
                    long num4 = GuidHelper.StringToLong(g, 16, ref num2, 12);
                    d    = (byte)(num3 >> 8);
                    e    = (byte)num3;
                    num3 = (int)(num4 >> 32);
                    f    = (byte)(num3 >> 8);
                    g2   = (byte)num3;
                    num3 = (int)num4;
                    h    = (byte)(num3 >> 24);
                    i    = (byte)(num3 >> 16);
                    j    = (byte)(num3 >> 8);
                    k    = (byte)num3;
                }
                else if (g.IndexOf('{', 0) >= 0)
                {
                    g = GuidHelper.EatAllWhitespace(g);
                    if (g[0] != '{')
                    {
                        return(false);
                    }
                    if (!GuidHelper.IsHexPrefix(g, 1))
                    {
                        return(false);
                    }
                    int num5 = 3;
                    int num6 = g.IndexOf(',', num5) - num5;
                    if (num6 <= 0)
                    {
                        return(false);
                    }
                    a = Convert.ToInt32(g.Substring(num5, num6), 16);
                    if (!GuidHelper.IsHexPrefix(g, num5 + num6 + 1))
                    {
                        return(false);
                    }
                    num5 = num5 + num6 + 3;
                    num6 = g.IndexOf(',', num5) - num5;
                    if (num6 <= 0)
                    {
                        return(false);
                    }
                    b = (short)Convert.ToInt32(g.Substring(num5, num6), 16);
                    if (!GuidHelper.IsHexPrefix(g, num5 + num6 + 1))
                    {
                        return(false);
                    }
                    num5 = num5 + num6 + 3;
                    num6 = g.IndexOf(',', num5) - num5;
                    if (num6 <= 0)
                    {
                        return(false);
                    }
                    c = (short)Convert.ToInt32(g.Substring(num5, num6), 16);
                    if (g.Length <= num5 + num6 + 1 || g[num5 + num6 + 1] != '{')
                    {
                        return(false);
                    }
                    num6++;
                    byte[] array = new byte[8];
                    for (int l = 0; l < 8; l++)
                    {
                        if (!GuidHelper.IsHexPrefix(g, num5 + num6 + 1))
                        {
                            return(false);
                        }
                        num5 = num5 + num6 + 3;
                        if (l < 7)
                        {
                            num6 = g.IndexOf(',', num5) - num5;
                            if (num6 <= 0)
                            {
                                return(false);
                            }
                        }
                        else
                        {
                            num6 = g.IndexOf('}', num5) - num5;
                            if (num6 <= 0)
                            {
                                return(false);
                            }
                        }
                        uint num7 = (uint)Convert.ToInt32(g.Substring(num5, num6), 16);
                        if (num7 > 255U)
                        {
                            return(false);
                        }
                        array[l] = (byte)num7;
                    }
                    d  = array[0];
                    e  = array[1];
                    f  = array[2];
                    g2 = array[3];
                    h  = array[4];
                    i  = array[5];
                    j  = array[6];
                    k  = array[7];
                    if (num5 + num6 + 1 >= g.Length || g[num5 + num6 + 1] != '}')
                    {
                        return(false);
                    }
                    if (num5 + num6 + 1 != g.Length - 1)
                    {
                        return(false);
                    }
                }
                else
                {
                    if (g.Length != 32)
                    {
                        return(false);
                    }
                    foreach (char c2 in g)
                    {
                        if (c2 < '0' || c2 > '9')
                        {
                            char c3 = char.ToUpperInvariant(c2);
                            if (c3 < 'A' || c3 > 'F')
                            {
                                return(false);
                            }
                        }
                    }
                    a    = Convert.ToInt32(g.Substring(num, 8), 16);
                    num += 8;
                    b    = (short)Convert.ToInt32(g.Substring(num, 4), 16);
                    num += 4;
                    c    = (short)Convert.ToInt32(g.Substring(num, 4), 16);
                    num += 4;
                    int num3 = (int)((short)Convert.ToInt32(g.Substring(num, 4), 16));
                    num += 4;
                    num2 = num;
                    long num4 = GuidHelper.StringToLong(g, 16, ref num2, 12);
                    d    = (byte)(num3 >> 8);
                    e    = (byte)num3;
                    num3 = (int)(num4 >> 32);
                    f    = (byte)(num3 >> 8);
                    g2   = (byte)num3;
                    num3 = (int)num4;
                    h    = (byte)(num3 >> 24);
                    i    = (byte)(num3 >> 16);
                    j    = (byte)(num3 >> 8);
                    k    = (byte)num3;
                }
                return(true);
            }
            catch (ArgumentException)
            {
            }
            catch (FormatException)
            {
            }
            catch (OverflowException)
            {
            }
            catch (IndexOutOfRangeException)
            {
            }
            finally
            {
                guid = new Guid(a, b, c, d, e, f, g2, h, i, j, k);
            }
            return(false);
        }