Initial attempt to make timidity work on Linux again

Add code to find the timidity executable, and split the command line into separate arguments by spaces.
For some reason, this doesn't work, although reverting 64e96c5f makes timidity work again.

src/sound/mididevices/music_timiditypp_mididevice.cpp

@@ -525,15 +525,56 @@ bool TimidityPPMIDIDevice::LaunchTimidity ()
 	int forkres;
 	glob_t glb;
 
-	switch (glob (CommandLine.GetChars(), 0, NULL, &glb))
+	// Get timidity executable path
-	{
+	int spaceIdx = 0;
-	case 0: // all good
+	int spaceInExePathCount = -1;
-		break;
+	FString TimidityExe;
+	do {
+		spaceIdx = CommandLine.IndexOf(' ', spaceIdx);
+		spaceInExePathCount += 1;
+		TimidityExe = CommandLine.Left(spaceIdx);
+		glob(TimidityExe.GetChars(), 0, NULL, &glb);
+	} while (spaceIdx != -1 && glb.gl_pathc == 0);
+	if (spaceIdx == -1) return false;
+	globfree(&glb);
 
-	case GLOB_NOSPACE:
+	int strCount = 1;
-		globfree (&glb);
+	for (spaceIdx = 0; spaceIdx < CommandLine.Len(); spaceIdx++) {
-	default:
+		if (CommandLine[spaceIdx] == ' ') {
-		return false;
+			++strCount;
+			if (CommandLine[spaceIdx+1] == ' ') {
+				--strCount;
+			}
+		}
+	}
+	strCount -= spaceInExePathCount;
+
+	char** TimidityArgs = new char*[strCount];
+
+	spaceIdx = CommandLine.IndexOf(' ');
+	int curSpace = spaceIdx, i = 1;
+
+	TimidityArgs[0] = new char[TimidityExe.Len() + 1];
+	strcpy(TimidityArgs[0], TimidityExe.GetChars());
+
+	int argLen;
+	while (curSpace != -1) {
+		curSpace = CommandLine.IndexOf(' ', spaceIdx);
+		if (curSpace != spaceIdx) {
+			argLen = curSpace - spaceIdx + 1;
+			if (argLen < 0) {
+				argLen = CommandLine.Len() - curSpace;
+			}
+			TimidityArgs[i] = new char[argLen];
+			strcpy(TimidityArgs[i], CommandLine.Mid(spaceIdx, curSpace - spaceIdx).GetChars());
+			i += 1;
+		}
+		spaceIdx = curSpace + 1;
+	}
+
+	DPrintf(DMSG_NOTIFY, "Timidity EXE: \x1cG%s\n", TimidityExe.GetChars());
+	for (i = 0; i < strCount; i++) {
+		DPrintf(DMSG_NOTIFY, "arg %d: \x1cG%s\n", i, TimidityArgs[i]);
 	}
 
 	forkres = fork ();
@@ -546,7 +587,7 @@ bool TimidityPPMIDIDevice::LaunchTimidity ()
 //		freopen ("/dev/null", "w", stderr);
 		close (WavePipe[1]);
 
-		execvp (glb.gl_pathv[0], glb.gl_pathv);
+		execvp (TimidityExe.GetChars(), TimidityArgs);
 		fprintf(stderr,"execvp failed\n");
 		_exit (0);	// if execvp succeeds, we never get here
 	}