impl of autoexec.bat (wip)

assets/!BOOTSEC

@@ -1 +1 @@
-let p=_BIOS.FIRST_BOOTABLE_PORT;com.sendMessage(p[0], "DEVRST\x17");com.sendMessage(p[0],'OPENR"tvdos/TVDOS.SYS",'+p[1]);let r=com.getStatusCode(p[0]);if(0==r)if(com.sendMessage(p[0],"READ"),r=com.getStatusCode([0]),0==r){let g=com.pullMessage(p[0]);eval(g)}else println("I/O Error");else println("TVDOS.SYS not found");println("Shutting down...");println("It is now safe to turn off the power");
+let p=_BIOS.FIRST_BOOTABLE_PORT;com.sendMessage(p[0],"DEVRST\x17");com.sendMessage(p[0],'OPENR"tvdos/TVDOS.SYS",'+p[1]);let r=com.getStatusCode(p[0]);if(0==r)if(com.sendMessage(p[0],"READ"),r=com.getStatusCode([0]),0==r){let g=com.pullMessage(p[0]);eval(g)}else println("I/O Error");else println("TVDOS.SYS not found");println("Shutting down...");println("It is now safe to turn off the power");

assets/AUTOEXEC.BAT

@@ -0,0 +1,2 @@
+echo "Hello, world!"
+fsh

assets/tvdos/TVDOS.SYS

@@ -10,7 +10,7 @@ _TVDOS.DRIVES["A"] = _BIOS.FIRST_BOOTABLE_PORT;
 
 _TVDOS.defaults = {
     path: [
-        "/tvdos/bin"
+        "\\tvdos\\bin\\"
     ]
 };
 Object.freeze(_TVDOS);
@@ -31,8 +31,11 @@ filesystem._close = function(portNo) {
 filesystem._flush = function(portNo) {
     com.sendMessage(portNo, "FLUSH");
 };
-// @return true if operation committed successfully, false otherwise; throws error
+// @return true if operation committed successfully, false if:
-//         if unknown mode or invalid drive letter was given
+//             - opening file with R-mode and target file does not exists
+//         throws if:
+//             - java.lang.NullPointerException if path is null
+//             - Error if operation mode is not "R", "W" nor "A"
 filesystem.open = function(driveLetter, path, operationMode) {
     let port = filesystem._toPorts(driveLetter);
 
@@ -67,7 +70,8 @@ filesystem.open("A", "tvdos/gl.js", "R");
 var GL = eval(filesystem.readAll("A"));
 
 // @param cmdsrc JS source code
-// @param args arguments for the program, must be Array
+// @param args arguments for the program, must be Array, and args[0] is always the name of the program, e.g.
+//        for command line 'echo foo bar', args[0] must be 'echo'
 var execApp = function(cmdsrc, args) {
     let prg = eval("let _appStub=function(exec_args){"+cmdsrc+"};_appStub;"); // making 'exec_args' a app-level global
     return prg(args);
@@ -78,8 +82,4 @@ var execApp = function(cmdsrc, args) {
 // Boot script
 filesystem.open("A", "tvdos/command.js", "R");
 let cmdsrc = filesystem.readAll("A");
-
+execApp(cmdsrc, ["", "/c", "\\AUTOEXEC.BAT"]);
-// app execution stub
-execApp(cmdsrc);
-//let sh = execApp(cmdsrc, [42]);
-//println(sh.test);

assets/tvdos/command.js

@@ -6,25 +6,11 @@ let shell_pwd = [];
 const welcome_text = "TSVM Disk Operating System, version " + _TVDOS.VERSION;
 
 function print_prompt_text() {
-    //print(CURRENT_DRIVE + ":\\" + shell_pwd.join("\\") + PROMPT_TEXT);
+    print(CURRENT_DRIVE + ":\\" + shell_pwd.join("\\") + PROMPT_TEXT);
-    con.color_pair(239,161);
-    print(" "+CURRENT_DRIVE+":");
-    con.color_pair(161,253);
-    con.addch(16);
-    con.color_pair(0,253);
-    print(" \\"+shell_pwd.join("\\")+" ");
-    con.color_pair(253,255);
-    con.addch(16);
-    con.addch(32);
-    con.color_pair(239,255);
 }
 
 function greet() {
-    con.color_pair(0,253);
+    println(welcome_text);
-    //print(welcome_text + " ".repeat(_fsh.scrwidth - welcome_text.length));
-    print(welcome_text + " ".repeat(80 - welcome_text.length));
-    con.color_pair(239,255);
-    println();
 }
 
 
@@ -129,27 +115,77 @@ Object.freeze(shell.coreutils);
 shell.execute = function(line) {
     if (line.size == 0) return;
     let tokens = shell.parse(line);
-    let cmd = tokens[0].toLowerCase();
+    let cmd = tokens[0];
-    if (shell.coreutils[cmd] !== undefined) {
+
-        shell.coreutils[cmd](tokens);
+    if (shell.coreutils[cmd.toLowerCase()] !== undefined) {
+        let retval = shell.coreutils[cmd.toLowerCase()](tokens);
+        return retval|0; // return value of undefined will cast into 0
     }
     else {
+        // search through PATH for execution
+
+        let fileExists = false;
+        let searchDir = (cmd.startsWith("\\")) ? [""] : ["\\"+shell_pwd.join("\\")].concat(_TVDOS.defaults.path);
+
+        searchDir.forEach(function(it) { serial.println("Searchdir: "+it); });
+
+        for (let i = 0; i < searchDir.length; i++) {
+            let path = (searchDir[i] + cmd).substring(1); // without substring, this will always prepend revslash
+            if (filesystem.open(CURRENT_DRIVE, path, "R")) {
+                fileExists = true;
+                break;
+            }
+        }
+
+        if (!fileExists) {
             printerrln('Bad command or filename: "'+cmd+'"');
+            return -1;
+        }
+        else {
+            let prg = filesystem.readAll(CURRENT_DRIVE);
+            let extension = undefined;
+            // get proper extension
+            let dotSepTokens = cmd.split('.');
+            if (dotSepTokens.length > 1) extension = dotSepTokens[dotSepTokens.length - 1].toUpperCase();
+
+            if ("BAT" == extension) {
+                // parse and run as batch file
+                let lines = prg.split('\n').filter(function(it) { return it.length > 0; });
+                lines.forEach(function(it) { println("Batch: " + it) }); // TODO
+            }
+            else {
+                return execApp(prg, tokens)|0; // return value of undefined will cast into 0
+            }
+        }
     }
 };
-if (exec_args !== undefined) return Object.freeze(shell);
+Object.freeze(shell);
 
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
-println("Starting TVDOS...");
 
-greet();
+if (exec_args !== undefined) {
+    // command /c   <commands>
+    // ^[0]    ^[1] ^[2]
+    if (exec_args[1].toLowerCase() == "/c") {
+        if (exec_args[2] == "") return 0; // no commands were given, just exit successfully
+        return shell.execute(exec_args[2]);
+    }
+    else {
+        printerrln("Invalid switch: "+exec_args[1]);
+        return 1;
+    }
+}
+else {
+    println("Starting TVDOS...");
 
-let cmdHistory = []; // zeroth element is the oldest
+    greet();
-let cmdHistoryScroll = 0; // 0 for outside-of-buffer, 1 for most recent
+
-let cmdExit = false;
+    let cmdHistory = []; // zeroth element is the oldest
-while (!cmdExit) {
+    let cmdHistoryScroll = 0; // 0 for outside-of-buffer, 1 for most recent
+    let cmdExit = false;
+    while (!cmdExit) {
         print_prompt_text();
 
         let cmdbuf = "";
@@ -217,6 +253,7 @@ while (!cmdExit) {
                 }
             }
         }
+    }
 }
 
 return 0;

src/net/torvald/tsvm/peripheral/TestDiskDrive.kt

@@ -31,6 +31,12 @@ class TestDiskDrive(private val driveNum: Int, theRootPath: File? = null) : Bloc
         }
     }
 
+    private val DBGPRN = true
+
+    private fun printdbg(msg: Any) {
+        if (DBGPRN) println("[TestDiskDrive] $msg")
+    }
+
     fun composePositiveAns(vararg msg: String): ByteArray {
         val sb = ArrayList<Byte>()
         sb.addAll(msg[0].toByteArray().toTypedArray())
@@ -126,7 +132,7 @@ class TestDiskDrive(private val driveNum: Int, theRootPath: File? = null) : Bloc
             val inputString = inputData.trimNull().toString(VM.CHARSET)
 
             if (inputString.startsWith("DEVRST\u0017")) {
-                println("[TestDiskDrive] Device Reset")
+                printdbg("Device Reset")
                 //readModeLength = -1
                 fileOpen = false
                 fileOpenMode = -1
@@ -144,14 +150,15 @@ class TestDiskDrive(private val driveNum: Int, theRootPath: File? = null) : Bloc
                 recipient?.writeout(composePositiveAns("Testtec Virtual Disk Drive"))
             else if (inputString.startsWith("OPENR\"") || inputString.startsWith("OPENW\"") || inputString.startsWith("OPENA\"")) {
                 if (fileOpen) {
+
                     statusCode = STATE_CODE_FILE_ALREADY_OPENED
                     return
                 }
 
-                println("[TestDiskDrive] msg: $inputString, lastIndex: ${inputString.lastIndex}")
+                printdbg("msg: $inputString, lastIndex: ${inputString.lastIndex}")
 
                 val openMode = inputString[4]
-                println("[TestDiskDrive] open mode: $openMode")
+                printdbg("open mode: $openMode")
                 // split inputstring into path and optional drive-number
 
                 // get position of latest delimeter (comma)
@@ -172,10 +179,10 @@ class TestDiskDrive(private val driveNum: Int, theRootPath: File? = null) : Bloc
                 // TODO driveNum is for disk drives that may have two or more slots built; for testing purposes we'll ignore it
 
                 file = File(rootPath, filePath)
-                println("[TestDiskDrive] file path: ${file.canonicalPath}, drive num: $driveNum")
+                printdbg("file path: ${file.canonicalPath}, drive num: $driveNum")
 
                 if (openMode == 'R' && !file.exists()) {
-                    println("! file not found")
+                    printdbg("! file not found")
                     statusCode = STATE_CODE_FILE_NOT_FOUND
                     return
                 }
@@ -314,7 +321,7 @@ class TestDiskDrive(private val driveNum: Int, theRootPath: File? = null) : Bloc
         val paths = path.split('/')
         val newPaths = ArrayList<String>()
         paths.forEach {
-            if (it.isBlank() || it.isEmpty()) throw IllegalArgumentException("Path cannot contain whitespaces")
+            if (it.isBlank() || it.isEmpty()) throw IllegalArgumentException("Path cannot contain whitespaces: $paths")
 
             if (it == "..") {
                 parentCount -= -1