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Enabled virtual terminal escape sequence processing.

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This commit is contained in:
Edward Wright 2021-07-09 14:52:40 -04:00
parent 24f01f22ba
commit d85f088fe4
1 changed files with 32 additions and 14 deletions
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46
SimplySerial/SimplySerial.cs
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@ -7,13 +7,29 @@ using System.Text;
using System.Threading;
using System.Management;
using System.Text.RegularExpressions;
using System.Runtime.InteropServices;
namespace SimplySerial
{
class SimplySerial
{
const string version = "0.5.0";
const string version = "0.6.0";
private const int STD_OUTPUT_HANDLE = -11;
private const uint ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x0004;
[DllImport("kernel32.dll")]
private static extern bool GetConsoleMode(IntPtr hConsoleHandle, out uint lpMode);
[DllImport("kernel32.dll")]
private static extern bool SetConsoleMode(IntPtr hConsoleHandle, uint dwMode);
[DllImport("kernel32.dll", SetLastError = true)]
private static extern IntPtr GetStdHandle(int nStdHandle);
[DllImport("kernel32.dll")]
public static extern uint GetLastError();
static List<ComPort> availablePorts;
static SerialPort serialPort;
@ -34,6 +50,7 @@ namespace SimplySerial
static int bufferSize = 102400;
static DateTime lastFlush = DateTime.Now;
// dictionary of "special" keys with the corresponding string to send out when they are pressed
static Dictionary<ConsoleKey, String> specialKeys = new Dictionary<ConsoleKey, String>
{
{ ConsoleKey.UpArrow, "\x1B[A" },
@ -44,6 +61,19 @@ namespace SimplySerial
static void Main(string[] args)
{
// attempt to enable virtual terminal escape sequence processing
try
{
var iStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
GetConsoleMode(iStdOut, out uint outConsoleMode);
outConsoleMode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
SetConsoleMode(iStdOut, outConsoleMode);
}
catch
{
// if the above fails, it doesn't really matter - it just means escape sequences won't process nicely
}
// process all command-line arguments
ProcessArguments(args);
@ -192,7 +222,6 @@ namespace SimplySerial
(logging == true) ? ($"Logfile : {logFile} (Mode = " + ((logMode == FileMode.Create) ? "OVERWRITE" : "APPEND") + ")\n" ) : ""
), flush: true);
lastFlush = DateTime.Now;
DateTime start = DateTime.Now;
TimeSpan timeSinceRX = new TimeSpan();
@ -216,13 +245,6 @@ namespace SimplySerial
ExitProgram(silent: true);
}
// properly process the backspace character
else if (keyInfo.Key == ConsoleKey.Backspace)
{
serialPort.Write("\b");
Thread.Sleep(150); // sort of cheating here - by adding this delay we ensure that when we process the receive buffer it will contain the correct backspace control sequence
}
// check for keys that require special processing (cursor keys, etc.)
else if (specialKeys.ContainsKey(keyInfo.Key))
serialPort.Write(specialKeys[keyInfo.Key]);
@ -238,10 +260,6 @@ namespace SimplySerial
// if anything was received, process it
if (received.Length > 0)
{
// properly process backspace
if (received == ("\b\x1B[K"))
received = "\b \b";
// write what was received to console
Output(received, force: true, newline: false);
start = DateTime.Now;