[Mono-dev] Make System.IO.Ports work on UNIX systems other than Linux

[Robert Nagy]

Hi

The attached diff makes SerialPort.GetPortNames() work on
all Unix systems other than Linux too, because ttyS* and
ttyUSB* is linux specific and on *BSD the serial ports are
tty[0-9]+.
(I've tested this code on Linux and it should also support
ttySG0 (SGI running Linux (ia64)).

The other way would be to add a different platform id for 
*BSDs.

Comments? (My C# is not good :)) 
-------------- next part --------------
Index: class/System/System.IO.Ports/SerialPort.cs
===================================================================
--- class/System/System.IO.Ports/SerialPort.cs	(revision 155801)
+++ class/System/System.IO.Ports/SerialPort.cs	(working copy)
@@ -24,6 +24,7 @@
 using System.ComponentModel;
 using System.Diagnostics;
 using System.Text;
+using System.Text.RegularExpressions;
 using System.Runtime.InteropServices;
 using Microsoft.Win32;
 
@@ -525,10 +526,18 @@
 			// Are we on Unix?
 			if (p == 4 || p == 128 || p == 6) {
 				string[] ttys = Directory.GetFiles("/dev/", "tty*");
+				Regex lnx = new Regex(@"^\/dev\/tty(S(G)?|USB)[0-9]+$");
+				Regex rem = new Regex(@"^\/dev\/tty(U)?[0-9]+$");
+
 				foreach (string dev in ttys) {
-					if (dev.StartsWith("/dev/ttyS") || dev.StartsWith("/dev/ttyUSB"))
-						serial_ports.Add(dev);
+					if (lnx.Match(dev).Success)
+						rem = lnx;
+					serial_ports.Add(dev);
 				}
+				for (int i = serial_ports.Count - 1; i >= 0; i--) {
+					if (!rem.Match(serial_ports[i]).Success)
+						serial_ports.RemoveAt(i);
+				}
 			} else {
 				using (RegistryKey subkey = Registry.LocalMachine.OpenSubKey("HARDWARE\\DEVICEMAP\\SERIALCOMM"))
 				{