Utility.cs

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Copyright (c) Microsoft Corporation.  All rights reserved.
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

using System;
using System.Collections;
using System.Diagnostics;
using System.Text;
using Microsoft.Win32;

namespace Microsoft.SPOT.Debugger
{
    public class CRC
    {
        static uint[] c_CRCTable = new uint[256]
        {
            0x00000000, 0x04C11DB7, 0x09823B6E, 0x0D4326D9, 0x130476DC, 0x17C56B6B, 0x1A864DB2, 0x1E475005,
            0x2608EDB8, 0x22C9F00F, 0x2F8AD6D6, 0x2B4BCB61, 0x350C9B64, 0x31CD86D3, 0x3C8EA00A, 0x384FBDBD,
            0x4C11DB70, 0x48D0C6C7, 0x4593E01E, 0x4152FDA9, 0x5F15ADAC, 0x5BD4B01B, 0x569796C2, 0x52568B75,
            0x6A1936C8, 0x6ED82B7F, 0x639B0DA6, 0x675A1011, 0x791D4014, 0x7DDC5DA3, 0x709F7B7A, 0x745E66CD,
            0x9823B6E0, 0x9CE2AB57, 0x91A18D8E, 0x95609039, 0x8B27C03C, 0x8FE6DD8B, 0x82A5FB52, 0x8664E6E5,
            0xBE2B5B58, 0xBAEA46EF, 0xB7A96036, 0xB3687D81, 0xAD2F2D84, 0xA9EE3033, 0xA4AD16EA, 0xA06C0B5D,
            0xD4326D90, 0xD0F37027, 0xDDB056FE, 0xD9714B49, 0xC7361B4C, 0xC3F706FB, 0xCEB42022, 0xCA753D95,
            0xF23A8028, 0xF6FB9D9F, 0xFBB8BB46, 0xFF79A6F1, 0xE13EF6F4, 0xE5FFEB43, 0xE8BCCD9A, 0xEC7DD02D,
            0x34867077, 0x30476DC0, 0x3D044B19, 0x39C556AE, 0x278206AB, 0x23431B1C, 0x2E003DC5, 0x2AC12072,
            0x128E9DCF, 0x164F8078, 0x1B0CA6A1, 0x1FCDBB16, 0x018AEB13, 0x054BF6A4, 0x0808D07D, 0x0CC9CDCA,
            0x7897AB07, 0x7C56B6B0, 0x71159069, 0x75D48DDE, 0x6B93DDDB, 0x6F52C06C, 0x6211E6B5, 0x66D0FB02,
            0x5E9F46BF, 0x5A5E5B08, 0x571D7DD1, 0x53DC6066, 0x4D9B3063, 0x495A2DD4, 0x44190B0D, 0x40D816BA,
            0xACA5C697, 0xA864DB20, 0xA527FDF9, 0xA1E6E04E, 0xBFA1B04B, 0xBB60ADFC, 0xB6238B25, 0xB2E29692,
            0x8AAD2B2F, 0x8E6C3698, 0x832F1041, 0x87EE0DF6, 0x99A95DF3, 0x9D684044, 0x902B669D, 0x94EA7B2A,
            0xE0B41DE7, 0xE4750050, 0xE9362689, 0xEDF73B3E, 0xF3B06B3B, 0xF771768C, 0xFA325055, 0xFEF34DE2,
            0xC6BCF05F, 0xC27DEDE8, 0xCF3ECB31, 0xCBFFD686, 0xD5B88683, 0xD1799B34, 0xDC3ABDED, 0xD8FBA05A,
            0x690CE0EE, 0x6DCDFD59, 0x608EDB80, 0x644FC637, 0x7A089632, 0x7EC98B85, 0x738AAD5C, 0x774BB0EB,
            0x4F040D56, 0x4BC510E1, 0x46863638, 0x42472B8F, 0x5C007B8A, 0x58C1663D, 0x558240E4, 0x51435D53,
            0x251D3B9E, 0x21DC2629, 0x2C9F00F0, 0x285E1D47, 0x36194D42, 0x32D850F5, 0x3F9B762C, 0x3B5A6B9B,
            0x0315D626, 0x07D4CB91, 0x0A97ED48, 0x0E56F0FF, 0x1011A0FA, 0x14D0BD4D, 0x19939B94, 0x1D528623,
            0xF12F560E, 0xF5EE4BB9, 0xF8AD6D60, 0xFC6C70D7, 0xE22B20D2, 0xE6EA3D65, 0xEBA91BBC, 0xEF68060B,
            0xD727BBB6, 0xD3E6A601, 0xDEA580D8, 0xDA649D6F, 0xC423CD6A, 0xC0E2D0DD, 0xCDA1F604, 0xC960EBB3,
            0xBD3E8D7E, 0xB9FF90C9, 0xB4BCB610, 0xB07DABA7, 0xAE3AFBA2, 0xAAFBE615, 0xA7B8C0CC, 0xA379DD7B,
            0x9B3660C6, 0x9FF77D71, 0x92B45BA8, 0x9675461F, 0x8832161A, 0x8CF30BAD, 0x81B02D74, 0x857130C3,
            0x5D8A9099, 0x594B8D2E, 0x5408ABF7, 0x50C9B640, 0x4E8EE645, 0x4A4FFBF2, 0x470CDD2B, 0x43CDC09C,
            0x7B827D21, 0x7F436096, 0x7200464F, 0x76C15BF8, 0x68860BFD, 0x6C47164A, 0x61043093, 0x65C52D24,
            0x119B4BE9, 0x155A565E, 0x18197087, 0x1CD86D30, 0x029F3D35, 0x065E2082, 0x0B1D065B, 0x0FDC1BEC,
            0x3793A651, 0x3352BBE6, 0x3E119D3F, 0x3AD08088, 0x2497D08D, 0x2056CD3A, 0x2D15EBE3, 0x29D4F654,
            0xC5A92679, 0xC1683BCE, 0xCC2B1D17, 0xC8EA00A0, 0xD6AD50A5, 0xD26C4D12, 0xDF2F6BCB, 0xDBEE767C,
            0xE3A1CBC1, 0xE760D676, 0xEA23F0AF, 0xEEE2ED18, 0xF0A5BD1D, 0xF464A0AA, 0xF9278673, 0xFDE69BC4,
            0x89B8FD09, 0x8D79E0BE, 0x803AC667, 0x84FBDBD0, 0x9ABC8BD5, 0x9E7D9662, 0x933EB0BB, 0x97FFAD0C,
            0xAFB010B1, 0xAB710D06, 0xA6322BDF, 0xA2F33668, 0xBCB4666D, 0xB8757BDA, 0xB5365D03, 0xB1F740B4
        };

        static public uint ComputeCRC( byte[] buf, int offset, int length, uint crc )
        {
            while(length-- > 0)
            {
                crc = c_CRCTable[((crc >> 24) ^ (buf[offset++])) & 0xFF] ^ (crc << 8);
            }

            return crc;
        }

        static public uint ComputeCRC( byte val, uint crc )
        {
            return c_CRCTable[((crc >> 24) ^ (val)) & 0xff] ^ (crc << 8);
        }

        static public uint ComputeCRC( byte[] buf, uint crc )
        {
            return ComputeCRC( buf, 0, buf.Length, crc );
        }
    }


    public static class RegistryAccess
    {
        public readonly static string c_FRAMEWORK_REGISTRY_BASE = @"Software\Microsoft\.NETMicroFramework";

        public readonly static string c_FRAMEWORK_REGISTRY_BASE_64 = @"Software\Wow6432Node\Microsoft\.NETMicroFramework";

        private static RegistryKey GetBaseKey(string relativePath)
        {
            RegistryKey key = null;

            try
            {
                key = Registry.CurrentUser.OpenSubKey(String.Concat(c_FRAMEWORK_REGISTRY_BASE, relativePath), false);
                if ( null != key )
                    return key;

                key = Registry.CurrentUser.OpenSubKey(String.Concat(c_FRAMEWORK_REGISTRY_BASE_64, relativePath), false);
                if ( null != key )
                    return key;

                key = Registry.LocalMachine.OpenSubKey(String.Concat(c_FRAMEWORK_REGISTRY_BASE, relativePath), false);
                if ( null != key )
                    return key;

                key = Registry.LocalMachine.OpenSubKey(String.Concat(c_FRAMEWORK_REGISTRY_BASE_64, relativePath), false);
                if ( null != key )
                    return key;
            }

            // The following exception are not handled now
            catch (ArgumentException /*ex*/)
            {
                // c_FRAMEWORK_REGISTRY_BASE + relativePath is longer than 255! Handle as internal error.
            }
            catch (ObjectDisposedException /*ex*/)
            {
                // The RegistryKey is closed (closed keys cannot be accessed).
            }
            catch
            {
                // Anything else; treat as internal error or report adverse condition to user if necessary
            }

            return null;
        }

        // If the registry base + relativePath is not present or inaccessible, this will return null; if
        // the containing key is accessible, but not the specific subkey desired, we throw an exception.
        public static object GetValue(string relativePath, string keystring)
        {
            try
            {
                RegistryKey key = Registry.CurrentUser.OpenSubKey(String.Concat(c_FRAMEWORK_REGISTRY_BASE, relativePath));
                if ( null != key )
                {
                    return key.GetValue(keystring);
                }
            }

            //  The following exception are not handled now
            catch (ArgumentException /*ex*/)
            {
                // c_FRAMEWORK_REGISTRY_BASE + relativePath is longer than 255! Handle as internal error.
            }
            catch (ObjectDisposedException /*ex*/)
            {
                // The RegistryKey is closed (closed keys cannot be accessed).
            }
            catch
            {
                // Anything else; treat as internal error
            }

            return null;
        }

        // This version will not throw an exception; if the desired key is present and of the correct type, it
        // will return true and the returnValue argument will be set to the desired value. Any other condition
        // will return false, a situation we will report to the user in a later revision of this software.
        public static bool GetIntValue(string relativePath, string keystring, out int returnValue, int defaultValue)
        {
            returnValue = defaultValue;
            RegistryKey key = null;

            try
            {
                key = GetBaseKey(relativePath);
                if ( null != key )
                {
                    returnValue = (int)key.GetValue(keystring);
                    return true;
                }
            }
            catch(InvalidCastException)
            {
                // present in the registry but not the appropriate kind of registry value; probably user error
                // to inform the user
            }
            catch // very unexpected
            {
                //to report adverse condition to user if necessary
            }

            return false;
        }

        // This version will not throw an exception; if the desired key is present and of the correct type, it
        // will return true and the returnValue argument will be set to the desired value. Any other condition
        // will return false, a situation we will report to the user in a later revision of this software.
        public static bool GetBoolValue(string relativePath, string keystring, out bool returnValue, bool defaultValue)
        {
            returnValue = defaultValue;
            int tempInt;

            if ( GetIntValue(relativePath, keystring, out tempInt, 0) )
            {
                returnValue = 0 != tempInt;
                return true;
            }
            else
            {
                return false;
            }
        }

    }

    public class CommandLineBuilder
    {
        private ArrayList m_args = new ArrayList();

        public CommandLineBuilder()
        {
        }

        public CommandLineBuilder(string commandLine)
        {
            //not support escaped quotes now
            Debug.Assert(commandLine.IndexOf("\\\"") < 0);
            string[] args = commandLine.Split('"');
            bool fQuoted = false;

            foreach (string arg in args)
            {
                if (fQuoted)
                {
                    m_args.Add(arg);
                }
                else
                {
                    string argTrim = arg.Trim();
                    if (argTrim.Length > 0)
                        m_args.AddRange(argTrim.Split(' '));
                }

                fQuoted = !fQuoted;
            }
        }

        public string[] Arguments
        {
            get { return (string[])m_args.ToArray(typeof(string)); }
        }

        public void AddArguments(params object[] args)
        {
            InsertArguments(m_args.Count, args);
        }

        public void AddArgumentsIfTrue(bool f, params object[] args)
        {
            if (f)
                AddArguments(args);
        }

        public void AddArgumentLoop(string command, params object[] args)
        {
            object[] argsT = null;

            foreach (object arg in args)
            {
                Array arr = arg as Array;

                if (arr == null)
                {
                    argsT = new object[2];
                    argsT[1] = arg;
                }
                else
                {
                    argsT = new object[arr.Length + 1];
                    arr.CopyTo(argsT, 1);
                }

                argsT[0] = command;
                AddArguments(argsT);
            }
        }

        public void AddArgumentLoopIfTrue(bool f, string command, params object[] args)
        {
            if (f)
                AddArgumentLoop(command, args);
        }

        public void InsertArguments(int index, params object[] args)
        {
            foreach (object o in args)
            {
                m_args.Insert(index, o.ToString());
                index++;
            }
        }

        public void RemoveArguments(int index, int count)
        {
            while (count-- > 0)
            {
                m_args.RemoveAt(index);
            }
        }

        public override string ToString()
        {
            StringBuilder sb = new StringBuilder(m_args.Count * 32);

            foreach (string arg in m_args)
            {
                //not support escaped quotes now
                sb.Append(" \"" + arg + "\"");
            }

            return sb.ToString().Trim();
        }
    }
}