mirror of
https://github.com/curioustorvald/tsvm.git
synced 2026-03-08 12:11:51 +09:00
287 lines
9.7 KiB
Plaintext
287 lines
9.7 KiB
Plaintext
// define exceptions
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function InterruptedException(m) {
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this.message = m;
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this.stack = (new Error()).stack;
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};
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InterruptedException.prototype = Object.create(Error.prototype);
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InterruptedException.prototype.name = 'InterruptedException';
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InterruptedException.prototype.constructor = InterruptedException;
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function IllegalAccessException(m) {
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this.message = m;
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this.stack = (new Error()).stack;
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};
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IllegalAccessException.prototype = Object.create(Error.prototype);
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IllegalAccessException.prototype.name = 'IllegalAccessException';
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IllegalAccessException.prototype.constructor = IllegalAccessException;
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class SIG {
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constructor(name, number) {
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this.name = "SIG" + name;
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this.number = number|0;
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}
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}
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const SIGTERM = new SIG("TERM",15);
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const SIGSEGV = new SIG("SEGV",11);
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function generateRandomHashStr(len) {
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let cs = 'qwfpgarstdzxcvbjluyhneiokmQWFPGARSTDZXCVBJLUYHNEIOKM';
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let s = '';
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for (let i = 0; i < len; i++) {
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s += cs[(Math.random()*cs.length)|0];
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}
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return s;
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}
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// define TVDOS
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const _TVDOS = {};
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_TVDOS.VERSION = "1.0";
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_TVDOS.DRIVES = {}; // Object where key-value pair is <drive-letter> : [serial-port, drive-number]
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// actually figure out the drive letter association
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// Drive A is always the device we're currently on
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_TVDOS.DRIVES["A"] = _BIOS.FIRST_BOOTABLE_PORT;
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//TODO
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_TVDOS.getPath = function() {
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return [''].concat(_TVDOS.variables.PATH.split(';'));
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};
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// initial values
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_TVDOS.variables = {
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DOSDIR: "\\tvdos",
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LANG: "EN",
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KEYBOARD: "us_qwerty",
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PATH: "\\tvdos\\bin;\\tbas;\\home",
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PATHEXT: ".com;.bat;.js",
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HELPPATH: "\\tvdos\\help",
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OS_NAME: "Terrarum Virtual DOS",
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OS_VERSION: _TVDOS.VERSION
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};
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Object.freeze(_TVDOS);
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///////////////////////////////////////////////////////////////////////////////
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const filesystem = {};
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filesystem._toPorts = (driveLetter) => {
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if (driveLetter.toUpperCase === undefined) {
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throw Error("'"+driveLetter+"' (type: "+typeof driveLetter+") is not a valid drive letter");
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}
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var port = _TVDOS.DRIVES[driveLetter.toUpperCase()];
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if (port === undefined) {
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throw Error("Drive letter '" + driveLetter.toUpperCase() + "' does not exist");
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}
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return port
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};
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filesystem._close = (portNo) => {
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com.sendMessage(portNo, "CLOSE");
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};
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filesystem._flush = (portNo) => {
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com.sendMessage(portNo, "FLUSH");
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};
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// @return true if operation committed successfully, false if:
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// - opening file with R-mode and target file does not exists
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// throws if:
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// - java.lang.NullPointerException if path is null
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// - Error if operation mode is not "R", "W" nor "A"
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filesystem.open = (driveLetter, path, operationMode) => {
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var port = filesystem._toPorts(driveLetter);
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filesystem._flush(port[0]); filesystem._close(port[0]);
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var mode = operationMode.toUpperCase();
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if (mode != "R" && mode != "W" && mode != "A") {
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throw Error("Unknown file opening mode: " + mode);
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}
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com.sendMessage(port[0], "OPEN"+mode+'"'+path+'",'+port[1]);
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return com.getStatusCode(port[0]);
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};
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// @return the entire contents of the file in String
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filesystem.readAll = (driveLetter) => {
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var port = filesystem._toPorts(driveLetter);
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com.sendMessage(port[0], "READ");
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var response = com.getStatusCode(port[0]);
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if (135 == response) {
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throw Error("File not opened");
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}
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if (response < 0 || response >= 128) {
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throw Error("Reading a file failed with "+response);
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}
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return com.pullMessage(port[0]);
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};
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filesystem.write = (driveLetter, string) => {
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var port = filesystem._toPorts(driveLetter);
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com.sendMessage(port[0], "WRITE"+string.length);
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var response = com.getStatusCode(port[0]);
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if (135 == response) {
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throw Error("File not opened");
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}
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if (response < 0 || response >= 128) {
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throw Error("Writing a file failed with "+response);
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}
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com.sendMessage(port[0], string);
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filesystem._flush(port[0]); filesystem._close(port[0]);
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};
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filesystem.isDirectory = (driveLetter) => {
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var port = filesystem._toPorts(driveLetter);
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com.sendMessage(port[0], "LISTFILES");
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var response = com.getStatusCode(port[0]);
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return (response === 0);
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};
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filesystem.mkDir = (driveLetter) => {
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var port = filesystem._toPorts(driveLetter);
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com.sendMessage(port[0], "MKDIR");
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var response = com.getStatusCode(port[0]);
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if (response < 0 || response >= 128) {
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var status = com.getDeviceStatus(port[0]);
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throw Error("Creating a directory failed with ("+response+"): "+status.message+"\n");
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}
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return (response === 0); // possible status codes: 0 (success), 1 (fail)
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};
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filesystem.touch = (driveLetter) => {
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var port = filesystem._toPorts(driveLetter);
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com.sendMessage(port[0], "TOUCH");
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var response = com.getStatusCode(port[0]);
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return (response === 0);
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};
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filesystem.mkFile = (driveLetter) => {
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var port = filesystem._toPorts(driveLetter);
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com.sendMessage(port[0], "MKFILE");
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var response = com.getStatusCode(port[0]);
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return (response === 0);
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};
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Object.freeze(filesystem);
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///////////////////////////////////////////////////////////////////////////////
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const input = {};
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const inputwork = {};
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inputwork.keymap = [];
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input.changeKeyLayout = function(name) {
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let res0 = filesystem.open("A",`tvdos/${name.toLowerCase()}.key`,"R");
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if (res0 != 0 && inputwork.keymap.length == 0) throw new Error(`I/O Error ${res0} - A:\\tvdos\\${name.toLowerCase()}.key`);
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try {
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inputwork.keymap = eval(filesystem.readAll("A"));
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}
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catch (e) {
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printerrln(e);
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return -1;
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}
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}
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// load initial key layout
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input.changeKeyLayout(_TVDOS.variables.KEYBOARD || "us_qwerty");
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// states to run the keyboard input
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inputwork.stroboTime = 4294967296*0;
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inputwork.stroboDelays = [0,250000000,0,25000000,0]; // 250ms, 25ms
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inputwork.stroboStatus = 0; // 0: first key, 1: waiting for initial delay, 2: repeating key, 3: waiting for repeat delay
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inputwork.oldKeys = [];
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inputwork.oldMouse = [];
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inputwork.repeatCount = 0;
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/**
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* callback: takes one argument of object which
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* [ <eventname>, args ]
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* where:
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* "key_down", <key symbol string>, <repeat count>, keycode0, keycode1 .. keycode7
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* "key_change", <key symbol string (what went up)>, 0, keycode0, keycode1 .. keycode7 (remaining keys that are held down)
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* "mouse_down", pos-x, pos-y, 1 // yes there's only one mouse button :p
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* "mouse_up", pos-x, pos-y, 0
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* "mouse_move", pos-x, pos-y, <button down?>, oldpos-x, oldpos-y
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*/
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input.withEvent = function(callback) {
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// TODO mouse event
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function arrayEq(a,b) {
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for (let i = 0; i < a.length; ++i) {
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if (a[i] !== b[i]) return false;
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}
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return true;
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}
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function arrayDiff(a,b) {
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return a.filter(x => !b.includes(x));
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}
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function keysToStr(keys) {
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let shiftin = keys.includes(59) || keys.includes(60);
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let headkey = keys.head();
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return (inputwork.keymap[headkey] == undefined) ? undefined : (shiftin) ? (inputwork.keymap[headkey][1] || inputwork.keymap[headkey][0]) : inputwork.keymap[headkey][0];
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}
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sys.poke(-40, 255);
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let keys = [sys.peek(-41),sys.peek(-42),sys.peek(-43),sys.peek(-44),sys.peek(-45),sys.peek(-46),sys.peek(-47),sys.peek(-48)];
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let mouse = [sys.peek(-33) | (sys.peek(-34) << 8), sys.peek(-35) | (sys.peek(-36) << 8), sys.peek(-37)];
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if (inputwork.stroboStatus % 2 == 0 && keys[0] != 0) {
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inputwork.stroboStatus += 1;
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inputwork.stroboTime = sys.nanoTime();
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inputwork.repeatCount += 1;
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callback(["key_down", keysToStr(keys), inputwork.repeatCount].concat(keys));
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}
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else if (!arrayEq(keys, inputwork.oldKeys) || keys[0] == 0) {
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inputwork.stroboStatus = 0;
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inputwork.repeatCount = 0;
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if (inputwork.oldKeys[0] != 0)
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callback(["key_change", keysToStr(arrayDiff(inputwork.oldKeys, keys)), inputwork.repeatCount].concat(keys));
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}
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else if (inputwork.stroboStatus % 2 == 1 && sys.nanoTime() - inputwork.stroboTime < inputwork.stroboDelays[inputwork.stroboStatus]) {
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sys.spin();
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}
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else {
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inputwork.stroboStatus += 1;
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if (inputwork.stroboStatus >= 4) {
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inputwork.stroboStatus = 2;
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}
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}
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inputwork.oldKeys = keys;
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inputwork.oldMouse = mouse;
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};
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Object.freeze(input);
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///////////////////////////////////////////////////////////////////////////////
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// install other stuffs
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filesystem.open("A", "tvdos/gl.js", "R");
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const GL = eval(filesystem.readAll("A"));
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let checkTerm = `if (sys.peek(-49)&1) throw new InterruptedException();`;
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let injectIntChk = (s, n) => {
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// primitive way of injecting a code; will replace a JS string that matches the regex...
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let k = s
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.replace(/while *\([^\n]+\) *{/, "$& "+n+"();")
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.replace(/for *\([^\n]+\) *{/, "$& "+n+"();")
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.replace(/do *{/, "$& "+n+"();");
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//serial.println(k);
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return k;
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}
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// @param cmdsrc JS source code
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// @param args arguments for the program, must be Array, and args[0] is always the name of the program, e.g.
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// for command line 'echo foo bar', args[0] must be 'echo'
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// @return status returned by the program
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var execApp = (cmdsrc, args) => {
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var intchkFunName = `tvdosSIGTERM_${generateRandomHashStr(16)}`;
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var execAppPrg = eval(
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`var ${intchkFunName} = function(){ ${checkTerm} };` +
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`var _appStub=function(exec_args){${injectIntChk(cmdsrc, intchkFunName)}\n};` +
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`_appStub`); // making 'exec_args' a app-level global
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return execAppPrg(args);
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}
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///////////////////////////////////////////////////////////////////////////////
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// Boot script
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serial.println("TVDOS.SYS initialised, running boot script...");
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var _G = {};
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filesystem.open("A", "tvdos/bin/command.js", "R");
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execApp(filesystem.readAll("A"), ["", "/c", "\\AUTOEXEC.BAT"]);
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