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using System;
using System.Collections.Generic;
using System.IO.Ports;
namespace QuickRoute.GPSDeviceReaders.SerialPortDeviceReader
{
public static class SerialPortUtil
{
public static String[] GetLatestPortsList()
{
var portNames = SerialPort.GetPortNames();
Array.Sort(portNames, new AlphanumComparator());
return portNames;
}
}
public class SerialPortSession : IDisposable
{
public SerialPort Port { get; private set; }
public SerialPortSession(SerialPort serialPort)
{
Port = serialPort;
if (!Port.IsOpen)
{
Port.Open();
}
}
public void Dispose()
{
Port.Close();
}
}
public class AlphanumComparator : IComparer<String>
{
public int Compare(String s1, String s2)
{
if (s1 == null)
{
return 0;
}
if (s2 == null)
{
return 0;
}
int len1 = s1.Length;
int len2 = s2.Length;
int marker1 = 0;
int marker2 = 0;
// Walk through two the strings with two markers.
while (marker1 < len1 && marker2 < len2)
{
char ch1 = s1[marker1];
char ch2 = s2[marker2];
// Some buffers we can build up characters in for each chunk.
var space1 = new char[len1];
int loc1 = 0;
var space2 = new char[len2];
int loc2 = 0;
// Walk through all following characters that are digits or
// characters in BOTH strings starting at the appropriate marker.
// Collect char arrays.
do
{
space1[loc1++] = ch1;
marker1++;
if (marker1 < len1)
{
ch1 = s1[marker1];
}
else
{
break;
}
} while (char.IsDigit(ch1) == char.IsDigit(space1[0]));
do
{
space2[loc2++] = ch2;
marker2++;
if (marker2 < len2)
{
ch2 = s2[marker2];
}
else
{
break;
}
} while (char.IsDigit(ch2) == char.IsDigit(space2[0]));
// If we have collected numbers, compare them numerically.
// Otherwise, if we have strings, compare them alphabetically.
var str1 = new string(space1);
var str2 = new string(space2);
int result;
if (char.IsDigit(space1[0]) && char.IsDigit(space2[0]))
{
int thisNumericChunk = int.Parse(str1);
int thatNumericChunk = int.Parse(str2);
result = thisNumericChunk.CompareTo(thatNumericChunk);
}
else
{
result = str1.CompareTo(str2);
}
if (result != 0)
{
return result;
}
}
return len1 - len2;
}
}
public static class HexUtils
{
public static byte[] GetBytes(Int16 value)
{
var valueBytes = BitConverter.GetBytes(value);
if (BitConverter.IsLittleEndian)
{
Array.Reverse(valueBytes);
}
return valueBytes;
}
public static byte[] GetBytes(Int32 value)
{
byte[] valueBytes = BitConverter.GetBytes(value);
if (BitConverter.IsLittleEndian)
{
Array.Reverse(valueBytes);
}
return valueBytes;
}
public static Int16 ToInt16(byte[] buffer, int offset)
{
if (BitConverter.IsLittleEndian)
{
var copy = new byte[2];
Array.Copy(buffer, offset, copy, 0, 2);
Array.Reverse(copy);
return BitConverter.ToInt16(copy, 0);
}
return BitConverter.ToInt16(buffer, offset);
}
public static Int32 ToInt32(byte[] buffer, int offset)
{
if (BitConverter.IsLittleEndian)
{
var copy = new byte[4];
Array.Copy(buffer, offset, copy, 0, 4);
Array.Reverse(copy);
return BitConverter.ToInt32(copy, 0);
}
return BitConverter.ToInt32(buffer, offset);
}
public static Int64 ToInt64(byte[] buffer, int offset)
{
if (BitConverter.IsLittleEndian)
{
var copy = new byte[8];
Array.Copy(buffer, offset, copy, 0, 8);
Array.Reverse(copy);
return BitConverter.ToInt64(copy, 0);
}
return BitConverter.ToInt64(buffer, offset);
}
public static byte CheckSum(byte[] bytes, int offset, int length)
{
byte checkSum = 0;
for (var i = offset; i < offset + length; i++)
{
checkSum ^= bytes[i];
}
return checkSum;
}
public static byte[] GetBytesLE(Int16 value)
{
var valueBytes = BitConverter.GetBytes(value);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(valueBytes);
}
return valueBytes;
}
public static byte[] GetBytesLE(Int32 value)
{
byte[] valueBytes = BitConverter.GetBytes(value);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(valueBytes);
}
return valueBytes;
}
public static Int16 ToInt16LE(byte[] buffer, int offset)
{
if (!BitConverter.IsLittleEndian)
{
var copy = new byte[2];
Array.Copy(buffer, offset, copy, 0, 2);
Array.Reverse(copy);
return BitConverter.ToInt16(copy, 0);
}
return BitConverter.ToInt16(buffer, offset);
}
public static Int32 ToInt32LE(byte[] buffer, int offset)
{
if (!BitConverter.IsLittleEndian)
{
var copy = new byte[4];
Array.Copy(buffer, offset, copy, 0, 4);
Array.Reverse(copy);
return BitConverter.ToInt32(copy, 0);
}
return BitConverter.ToInt32(buffer, offset);
}
public static Int64 ToInt64LE(byte[] buffer, int offset)
{
if (!BitConverter.IsLittleEndian)
{
var copy = new byte[8];
Array.Copy(buffer, offset, copy, 0, 8);
Array.Reverse(copy);
return BitConverter.ToInt64(copy, 0);
}
return BitConverter.ToInt64(buffer, offset);
}
}
}
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