adding gzip/replaced bad base64 impl with libgdx's

2026-03-07 19:51:51 +09:00 · 2020-10-20 17:44:59 +09:00
parent ca672f23c2
commit f49cb6c300
9 changed files with 239 additions and 210 deletions
--- a/assets/JS_INIT.js
+++ b/assets/JS_INIT.js
@@ -1,151 +1,3 @@
-// standard print functions
-function print(s) {
-    sys.print(s);
-}
-function println(s) {
-    if (s === undefined)
-        sys.print("\n");
-    else
-        sys.println(s);
-}
-function read() {
-    return sys.read();
-}
-// ncurses-like terminal control
-var con = {};
-con.getch = function() {
-    return sys.readKey();
-};
-con.move = function(y, x) {
-    print(String.fromCharCode(27,91)+(y|0)+";"+(x|0)+"H");
-};
-con.addch = function(c) {
-    graphics.putSymbol(c|0);
-};
-con.mvaddch = function(y, x, c) {
-    con.move(y, x); con.addch(c);
-};
-con.getmaxyx = function() {
-    return graphics.getTermDimension();
-};
-con.getyx = function() {
-    return graphics.getCursorYX();
-};
-con.hitterminate = function() { // ^C
-    sys.poke(-40, 1);
-    return (sys.peek(-41) == 31 && (sys.peek(-42) == 129 || sys.peek(-42) == 130));
-};
-con.hiteof = function() { // ^D
-    sys.poke(-40, 1);
-    return (sys.peek(-41) == 32 && (sys.peek(-42) == 129 || sys.peek(-42) == 130));
-};
-con.resetkeybuf = function() {
-    sys.poke(-40, 0);
-    sys.poke(-41, 0); sys.poke(-42, 0); sys.poke(-43, 0); sys.poke(-44, 0);
-    sys.poke(-45, 0); sys.poke(-46, 0); sys.poke(-47, 0); sys.poke(-48, 0);
-};
-con.color_fore = function(n) { // 0..7; -1 for transparent
-    if (n < 0)
-        print(String.fromCharCode(27,91)+"38;5;255m");
-    else
-        print(String.fromCharCode(27,91)+(((n|0) % 8)+30)+"m");
-};
-con.color_back = function(n) { // 0..7; -1 for transparent
-    if (n < 0)
-        print(String.fromCharCode(27,91)+"48;5;255m");
-    else
-        print(String.fromCharCode(27,91)+(((n|0) % 8)+40)+"m");
-};
-con.color_pair = function(fore, back) { // 0..255
-    print(String.fromCharCode(27,91)+"38;5;"+fore+"m");
-    print(String.fromCharCode(27,91)+"48;5;"+back+"m");
-};
-con.clear = function() {
-    print(String.fromCharCode(27,91)+"2J");
-};
-con.curs_set = function(arg) {
-    print(String.fromCharCode(27,91)+"?25"+(((arg|0) == 0) ? "l" : "h"));
-};
-Object.freeze(con);
-// system management  function
-var system = {};
-system.maxmem = function() {
-    return sys.peek(-65) | (sys.peek(-66) << 8) | (sys.peek(-67) << 16) | (sys.peek(-68) << 24);
-};
-system.halt = function() {
-    exit();
-};
-Object.freeze(system);
-// some utilities functions
-var base64 = {};
-base64._lookup = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-base64._revLookup = {"":0,"=":0,"A":0,"B":1,"C":2,"D":3,"E":4,"F":5,"G":6,"H":7,"I":8,"J":9,"K":10,"L":11,"M":12,"N":13,"O":14,"P":15,"Q":16,"R":17,"S":18,"T":19,"U":20,"V":21,"W":22,"X":23,"Y":24,"Z":25,"a":26,"b":27,"c":28,"d":29,"e":30,"f":31,"g":32,"h":33,"i":34,"j":35,"k":36,"l":37,"m":38,"n":39,"o":40,"p":41,"q":42,"r":43,"s":44,"t":45,"u":46,"v":47,"w":48,"x":49,"y":50,"z":51,"0":52,"1":53,"2":54,"3":55,"4":56,"5":57,"6":58,"7":59,"8":60,"9":61,"+":62,"/":63};
-base64.atob = function(base64str) {
-    var modulo = base64str.length % 4;
-    var ret = [];
-    for (var i = 0; i < base64str.length + modulo; i += 4) {
-        var bits = (base64._revLookup[base64str[i]] << 18) | (base64._revLookup[base64str[i+1]] << 12) | (base64._revLookup[base64str[i+2]] << 6) | (base64._revLookup[base64str[i+3]]);
-        var pads = (base64str[i+2] == "=") ? 2 : ((base64str[i+3] == "=") ? 1 : 0);
-
-        ret.push((bits >> 16) & 255);
-        if (pads <= 1) ret.push((bits >> 8) & 255);
-        if (pads == 0) ret.push(bits & 255);
-    }
-    return ret;
-};
-base64.atobstr = function(base64str) {
-    var modulo = base64str.length % 4;
-    var ret = "";
-    for (var i = 0; i < base64str.length + modulo; i += 4) {
-        var bits = (base64._revLookup[base64str[i]] << 18) | (base64._revLookup[base64str[i+1]] << 12) | (base64._revLookup[base64str[i+2]] << 6) | (base64._revLookup[base64str[i+3]]);
-        var pads = (base64str[i+2] == "=") ? 2 : ((base64str[i+3] == "=") ? 1 : 0);
-
-        ret += String.fromCharCode((bits >> 16) & 255);
-        if (pads <= 1) ret += String.fromCharCode((bits >> 8) & 255);
-        if (pads == 0) ret += String.fromCharCode(bits & 255);
-    }
-    return ret;
-};
-base64.btoa = function(inputString) {
-    var modulo = inputString.length % 3;
-    var outStr = "";
-    if (Array.isArray(inputString)) {
-        for (var i = 0; i < inputString.length + ((modulo == 0) ? 0 : 3 - modulo); i += 3) {
-            var bytes = (inputString[i] << 16) | (inputString[i+1] << 8) | inputString[i+2];
-            // for arrays, out-of-bounds have value of undefined;
-            // for strings, out-of-bounds have value of NaN -- both are casted into int 0 on bitwise operations.
-
-            outStr += base64._lookup[(bytes >> 18) & 63];
-            outStr += base64._lookup[(bytes >> 12) & 63];
-            if (i < Math.floor(inputString.length / 3) * 3 | (modulo == 2 || modulo == 0)) outStr += base64._lookup[(bytes >> 6) & 63];
-            if (i < Math.floor(inputString.length / 3) * 3 | modulo == 0) outStr += base64._lookup[bytes & 63];
-        }
-        // pad the output
-        if (modulo == 1) outStr += "==";
-        else if (modulo == 2) outStr += "=";
-    }
-    else if (typeof inputString == "string") {
-        for (var i = 0; i < inputString.length + ((modulo == 0) ? 0 : 3 - modulo); i += 3) {
-            var bytes = (inputString.charCodeAt(i) << 16) | (inputString.charCodeAt(i+1) << 8) | inputString.charCodeAt(i+2);
-            // for arrays, out-of-bounds have value of undefined;
-            // for strings, out-of-bounds have value of NaN -- both are casted into int 0 on bitwise operations.
-
-            outStr += base64._lookup[(bytes >> 18) & 63];
-            outStr += base64._lookup[(bytes >> 12) & 63];
-            if (i < Math.floor(inputString.length / 3) * 3 | (modulo == 2 || modulo == 0)) outStr += base64._lookup[(bytes >> 6) & 63];
-            if (i < Math.floor(inputString.length / 3) * 3 | modulo == 0) outStr += base64._lookup[bytes & 63];
-        }
-        // pad the output
-        if (modulo == 1) outStr += "==";
-        else if (modulo == 2) outStr += "=";
-    }
-    else {
-        throw "Unknown byte representation (with typeof "+typeof bytes+")";
-    }
-
-    return outStr;
-};
-Object.freeze(base64);
 // Polyfilling some functions from ECMAScript6+
 if (!String.prototype.repeat) {
    String.prototype.repeat = function(count) {
@@ -186,6 +38,14 @@ if (!String.prototype.repeat) {
        return str;
    }
 }
+if (!String.prototype.startsWith) {
+    Object.defineProperty(String.prototype, 'startsWith', {
+        value: function(search, rawPos) {
+            var pos = rawPos > 0 ? rawPos|0 : 0;
+            return this.substring(pos, pos + search.length) === search;
+        }
+    });
+}
 if (!Array.prototype.filter){
    Array.prototype.filter = function(func, thisArg) {
        'use strict';
@@ -408,3 +268,86 @@ if ('function' !== typeof Array.prototype.reduceRight) {
    };
 }

+///////////////////////////////////////////////////////////////////////////////
+
+load = undefined
+loadWithNewGlobal = undefined
+// standard print functions
+function print(s) {
+    sys.print(s);
+}
+function println(s) {
+    if (s === undefined)
+        sys.print("\n");
+    else
+        sys.println(s);
+}
+function read() {
+    return sys.read();
+}
+// ncurses-like terminal control
+var con = {};
+con.getch = function() {
+    return sys.readKey();
+};
+con.move = function(y, x) {
+    print(String.fromCharCode(27,91)+(y|0)+";"+(x|0)+"H");
+};
+con.addch = function(c) {
+    graphics.putSymbol(c|0);
+};
+con.mvaddch = function(y, x, c) {
+    con.move(y, x); con.addch(c);
+};
+con.getmaxyx = function() {
+    return graphics.getTermDimension();
+};
+con.getyx = function() {
+    return graphics.getCursorYX();
+};
+con.hitterminate = function() { // ^C
+    sys.poke(-40, 1);
+    return (sys.peek(-41) == 31 && (sys.peek(-42) == 129 || sys.peek(-42) == 130));
+};
+con.hiteof = function() { // ^D
+    sys.poke(-40, 1);
+    return (sys.peek(-41) == 32 && (sys.peek(-42) == 129 || sys.peek(-42) == 130));
+};
+con.resetkeybuf = function() {
+    sys.poke(-40, 0);
+    sys.poke(-41, 0); sys.poke(-42, 0); sys.poke(-43, 0); sys.poke(-44, 0);
+    sys.poke(-45, 0); sys.poke(-46, 0); sys.poke(-47, 0); sys.poke(-48, 0);
+};
+con.color_fore = function(n) { // 0..7; -1 for transparent
+    if (n < 0)
+        print(String.fromCharCode(27,91)+"38;5;255m");
+    else
+        print(String.fromCharCode(27,91)+(((n|0) % 8)+30)+"m");
+};
+con.color_back = function(n) { // 0..7; -1 for transparent
+    if (n < 0)
+        print(String.fromCharCode(27,91)+"48;5;255m");
+    else
+        print(String.fromCharCode(27,91)+(((n|0) % 8)+40)+"m");
+};
+con.color_pair = function(fore, back) { // 0..255
+    print(String.fromCharCode(27,91)+"38;5;"+fore+"m");
+    print(String.fromCharCode(27,91)+"48;5;"+back+"m");
+};
+con.clear = function() {
+    print(String.fromCharCode(27,91)+"2J");
+};
+con.curs_set = function(arg) {
+    print(String.fromCharCode(27,91)+"?25"+(((arg|0) == 0) ? "l" : "h"));
+};
+Object.freeze(con);
+// system management  function
+var system = {};
+system.maxmem = function() {
+    return sys.peek(-65) | (sys.peek(-66) << 8) | (sys.peek(-67) << 16) | (sys.peek(-68) << 24);
+};
+system.halt = function() {
+    exit();
+};
+Object.freeze(system);
+// some utilities functions
--- a/assets/tvdos/filesystem.md
+++ b/assets/tvdos/filesystem.md
@@ -0,0 +1,45 @@
+# Syntax
+## Reserved directories
+* `$DEVICE<device_number>`
+
+## Reserved files
+* `$DEVICE<device_number>/$BOOT` — associates to bootloader, exact filename depends on the filesystem the device uses
+
+# Drivers
+Filesystem driver is just an executable that can do file I/O to one specific filesystem it supports.
+
+Filesystem drivers, just as regular TVDOS drivers, resides in `<root>/TVDOS/DRIVERS/`
+
+# Commands
+
+## cp
+`[cp|copy] <source> <destination>`
+
+Executes following command:
+```
+<filesystem>.fs cp <source> <dest>
+```
+
+## mv
+`[mv|move] <from> <to>`
+
+Executes following command:
+```
+<filesystem>.fs mv <from> <to>
+```
+
+## touch
+`touch <path>`
+
+Executes following command:
+```
+<filesystem>.fs touch <path>
+```
+
+## format
+`format -f [tsvm|flat|tree] [ -b <path_to_bootloader> ] <device_number>`
+
+Executes following command:
+```
+<filesystem>.fs format <device_number> [ <path_to_bootloader> ]
+```
--- a/assets/tvdos/fsh.js
+++ b/assets/tvdos/fsh.js
@@ -15,11 +15,9 @@ _fsh.scrdim = con.getmaxyx();
 _fsh.scrwidth = _fsh.scrdim[1];
 _fsh.scrheight = _fsh.scrdim[0];
 _fsh.brandName = "f\xb3Sh";
-_fsh.brandLogoTexSmall = new GL.Texture(24, 14, base64.atob("//////////////////////////////////////////j//////////////"+
-"/////////////////j////////////////////////z8/P///j///+hoaGhof+hof////////Pz//////j//6Gh//////+hof////////Pz//////j//6"+
-"Gh//////+hoaGhof//8/Pz8/P///j///+hoaH///+hof//oaH///Pz//////j//////6Gh//+hof//oaH///Pz//////j///////+hof+hof//oaH///P"+
-"z//////j///////+hof+hof//oaH///Pz//////j//6GhoaGh//+hof//oaH///////////j///////////////////////////////j/////////////"+
-"////////////////////////////////////////"));
+_fsh.brandLogoTexSmall = new GL.Texture(24, 14, gzip.decomp(base64.atob(
+"H4sIAAAAAAAAAPv/Hy/4Qbz458+fIeILQQBIwoSh6qECuMVBukCmIJkDVQ+RQNgLE0MX/w+1lyhxqIUwTLJ/sQMAcIXsbVABAAA="
+)));
 _fsh.scrlayout = ["com.fsh.clock","com.fsh.calendar","com.fsh.apps_n_files"];

 _fsh.drawTitlebar = function(titletext) {
@@ -61,56 +59,14 @@ _fsh.registerNewWidget = function(widget) {
 }

 var clockWidget = new _fsh.Widget("com.fsh.clock", _fsh.scrwidth - 8, 7);
-clockWidget.numberSheet = new GL.SpriteSheet(19, 22, new GL.Texture(190, 22, base64.atob(
-"///////v7+/v7+/v7+//////////////////////7+//////////7+/v7+/v7+/v7+/v7+/v/////+/v7+/v7+/v7+/v7+/v7///////////////7+/v/"+
-"///////////7+/v7+/v7+/v7+/v7+/v7+//////////7+/v7+/v7+/v7+/////v7+/v7+/v7+/v7+/v7+/v7////////+/v7+/v7+/v7////////////+"+
-"/v7+/v7+/v7+/v/////////+/v7+/v7+/v7+/v7+/////////////////v7+/v////////7+/v7+/v7+/v7+/v7+/v7+/v/+/v7+/v7+/v7+/v7+/v7+/"+
-"v7///////////7+/v7///////////7+/v7+/v7+/v7+/v7+/v7+/v7//////v7+/v7+/v7+/v7+/v7//v7+/v7+/v7+/v7+/v7+/v7+/v////7+/v7+/v"+
-"7+/v7+/v7///////7+/v7+/v7+/v7+/v7+/v/////+/v7+/v///////v7+/v7////////////+/v7+/v7//////////////////////////v7+/v7+///"+
-"///////////////7+/v7+/v/////////+/v7////////////+/v7//////////////////////////v7+/v7/////////////////////////////////"+
-"/v7+/v////7+/v7+/v////7+/v7+/v////7+/v7+//////////7+/v7+///+/v7+/////////////v7+/v////////7+/v7+/v7+/////////////////"+
-"////////////v7+/v////////////////////7+/v7////////+/v7+/////////////v7+/////////////////////////v7+/v////////////////"+
-"////////////////////7+/v/////+/v7+//////////7+/v7///7+/v7///////////////7+/v7//v7+///////////////+/v7////////+/v7+/v7"+
-"+/v/////////////////////////////+/v7//////////////////////v7+/////////v7+//////////////7+/v///////////////////////v7+"+
-"/v////////////////////////////////////7+/v7//////v7+/////////////v7+///+/v7//////////////////v7+/v7+/v///////////////"+
-"v7+/v/////////////+/v7//////////////////////////////v7+//////////////////////7+/v///////v7+/v/////////////+/v7///////"+
-"////////////////7+/v/////////////////////////////////////+/v7///////7+/v////////////7+/v///v7+//////////////////7+/v7"+
-"+/v/////////////////+/v7//////////////v7+//////////////////////////////7+/v/////////////////////+/v7///////7+/v//////"+
-"/////////v7+//////////////////////7+/v7////////////////////////////////////+/v7+///////+/v7////////////+/v7///7+/v///"+
-"//////////////+/v7+/v7//////////////////v7+//////////////7+/v/////////////////////////////+/v7//////////////////////v"+
-"7+//////7+/v7///////////////7+/v/////////////////////+/v7//////////////////////////////////////v7+/////////v7+///////"+
-"//////v7+///+/v7//////////////////v7+/v7+//////////////////7+/v/////////////+/v7////////////////////////////+/v7+////"+
-"/////////////////v7+/v/////+/v7///////7+///////+/v7+/v7+/v7+/v7+/v7+/////v7+//7+/v7+/v7+/v7+/////////////////////v7+/"+
-"v////////7+/v7//////////v7+/v///v7+//////////////////7+/v7+/v/////////////////+/v7//////////////v7+//////////////////"+
-"////////7+/v7+/v/////////////////+/v7+/v/////+/v7+///////+/v7///////7+/v7+/v7+/v7+/v7+/v7+//7+/v7+/v7+/v7+/v7+/v7+///"+
-"///////////////7+/v/////////+/v7+/v7////+/v7+/v7///7+/v/////////////////+/v7+/v7//////////////////v7+//////////////7+"+
-"/v////////////7+/v7+/v7+/v7+/v7+/v///v7+/v7+/v7+/v7+/v7+/v///////v7+/////////v7+///////////////////////+/v7+/v7+/v7+/"+
-"v7//////////v7+/v7///////////////7+/v7////////+/v7+/v7+/v7+/v7+/v7+/v/+/v7+///////////////+/v7+/v7+//////////////////"+
-"7+/v/////////////+/v7//////////v7+/v7+/v7+/v7+/v7+//////7+/v7+/v7+/v7+/v7+/v7//////v7+/v////////7+/v/////////////////"+
-"////////+/v7+/v7+/v///////////////v7+/v/////////////+/v7//////////v7+/v7+/v7+/v7+/v7+/v7///7+/v7+//////////7+/v7+/v7+"+
-"/v/////////////////+/v7//////////////v7+/////////v7+/v7+///////////////////////////////////+/v7+/v////7+/v/////////+/"+
-"v7///////////////////////////7+/v7+/v/////////////////+/v7////////////+/v7+/////////v7+/v7+//////////7+/v7+/v///v7+/v"+
-"7+/v7+/v7+/v7+/v7+/v7//////////////////v7+//////////////7+/v////////7+/v7////////////////////////////////////////+/v7"+
-"+//7+/v7//////////v7+///////////////////////////+/v7+/v7//////////////////v7+/////////////v7+//////////7+/v7/////////"+
-"//////7+/v7//////v7+/v7+/v7+/v7//v7+/v7+//////////////////7+/v/////////////+/v7////////+/v7//////////////////////////"+
-"/////////////////7+/v/+/v7///////////7+/v///////////////////////////v7+/v7+//////////////////7+/v///////////v7+/v////"+
-"/////+/v7//////////////////v7+//////////////////////7+/v7+/v/////////////////+/v7//////////////v7+/////////v7+///////"+
-"////////////////////////////////////+/v7+/v7+///////////+/v7///////////////////////////7+/v7+/v/////////////////+/v7/"+
-"//////////7+/v///////////v7+//////////////////7+/v////////////////////7+/v7+/v7+///////////////+/v7+//////////////7+/"+
-"v////////7+/v///////////////////////////////////////////v7+/v7+/v7+/v7+/v7+/v7+/v7+/v/////////////////////+/v7+/v7///"+
-"///////////////v7+//////////7+/v7///////////7+/v/////////////////+/v7////////////////////+/v7//v7+/v///////////////v7"+
-"+///////////////+/v7////////+/v7///////////////////////////////////////////7+/v/+/v7+/v7+/v7+/v7+/v7+/v//////////////"+
-"/////////v7+/v7+//////////////////7+/v/////////+/v7////////////+/v7//////////////////v7+///////////////////+/v7+///+/"+
-"v7+/////////////v7+/v///////////////v7+/////////v7+//////////////////////////////////////////7+/v7////////////////+/v"+
-"7//////////////////////////v7+/v7+/v7///////////////7+/v7////////+/v7+/////////////v7+/v///////////////v7+/v/////////"+
-"////////+/v7+//////7+/v7+///////+/v7+/v////////////////7+/v////////7+/v///////////////////////////////////////v7+/v7+"+
-"/////////////////v7+///////////////////////+/v7+/v7//v7+/v7//////////v7+/v7//////////v7+//////////////7+/v7+/v///////"+
-"//+/v7+/v7///////////////7+/v7+/////////v7+/v7+/v7+/v7+/v/////////////////+/v7////////+/v7+/v7+/v7+/v7+/v7+/v7+/v7+/v"+
-"7+/v7+/v7+/v7+/v7+//////////////////7+/v/////+/v7+/v7+/v7+/v7+/v7+/v7////+/v7+/v7+/v7+/v7+/v7//////////v7+/v/////////"+
-"//////v7+/v7+/v7+/v7+/v7+/v7///7+/v7+/v7+/v7+/v7+/////////////v7+/v7+/v7+/////////////////////v7+//////////7+/v7+/v7+"+
-"/v7+/v7+/v7+///+/v7+/v7+/v7+/v7+/v7//////////////////////v7///////7+/v7+/v7+/v7+/v7+/v/////////+/v7+/v7+/v7+/v///////"+
-"/////7+/v///////////////////v7+/v7+/v7+/v7+/v///////v7+/v7+/v7+/v7////////w=="
-)));
+clockWidget.numberSheet = new GL.SpriteSheet(19, 22, new GL.Texture(190, 22, gzip.decomp(base64.atob(
+"H4sIAAAAAAAAAMWVW3LEMAgE739aHcFJJV5ZMD2I9ToVfcl4GBr80HF8r/FaR1ozMuIyoUu87lEXI0al5qVR5AebSwchSaNE6Nyo1Nw5HXF3SfPT4Bshl"+
+"EycA8RD96mLlHbuhTgOrfLnUDZspafbSQWk56WEGvQEtWaWwgb8iz7a8AOXhsraO/q9Qw2/GnXovfVN+q2wM/p/oddn2cjF239GX3y11+SWCtc6FTHC1v"+
+"TVPkDPWWn0w+DDz93UX9v9mF5KIsQ6OdN2KJoB4ui1bXXr0AMp0YfiQo//4XhpK8555dsNehAqVS5uhb5iHn3Kko769J59KmLBe/TSR7hcsd+hr+HnrwR"+
+"9uvRF9+D3MP14gN7lqx+8OuNT+uqt3NFX3SN9fTbeeHNq+C29pRWzX5+Rcm7SZyjOKJ/2hkSPqul4xN279DrSYvCrNu2NI7ZMp1ouBxK3KBVVnEeAUWbK"+
+"MUDn5DPsPxmUqHZQjGpy2hergM3EVBAAAA=="
+))));
+
 clockWidget.clockColon = new GL.Texture(4, 3, base64.atob("7+/v7+/v7+/v7+/v"));
 clockWidget.monthNames = ["Spring", "Summer", "Autumn", "Winter"];
 clockWidget.dayNames = ["Mondag  ", "Tysdag  ", "Midtveke", "Torsdag ", "Fredag  ", "Laurdag ", "Sundag  ", "Verddag "];
@@ -166,4 +122,7 @@ while (true) {

 con.move(3,1);
 con.color_pair(201,255);
-print("cya!");
+print("cya!");
+
+let konsht = 3412341241;
+print(konsht);
--- a/assets/tvdos/gl.js
+++ b/assets/tvdos/gl.js
@@ -6,12 +6,13 @@ Has no affiliation with OpenGL by Khronos Group

 var GL = {};

+// bytes should be able to handle both JSArray and Java ByteArray (toString = "[B")?
 GL.Texture = function(w, h, bytes) {
    this.width = w;
    this.height = h;
    this.texData = bytes;

-    if (!Array.isArray(bytes)) {
+    if (!Array.isArray(bytes) && !bytes.toString().startsWith("[B")) {
        throw "Texture data is not an instance of array";
    }
 };
@@ -52,7 +53,7 @@ GL.drawTexPatternOver = function(texture, x, y, width, height) {
            var tx = xx % texture.width;
            var ty = yy % texture.height;
            var c = texture.texData[ty * texture.width + tx];
-            if (c != 255) {
+            if (c != -1) {
                graphics.plotPixel(x + xx, y + yy, c);
            }
        }
@@ -71,7 +72,7 @@ GL.drawTexImageOver = function(texture, x, y) {
    for (var ty = 0; ty < texture.height; ty++) {
        for (var tx = 0; tx < texture.width; tx++) {
            var c = texture.texData[ty * texture.width + tx];
-            if (c != 255) {
+            if (c != -1) {
                graphics.plotPixel(x + tx, y + ty, c);
            }
        }
@@ -93,7 +94,7 @@ GL.drawSpriteOver = function(sheet, xi, yi, x, y) {
    for (var ty = 0; ty < sheet.tileHeight; ty++) {
        for (var tx = 0; tx < sheet.tileWidth; tx++) {
            var c = sheet.texture.texData[(ty + offy) * sheet.texture.width + (tx + offx)];
-            if (c != 255) {
+            if (c != -1) {
                graphics.plotPixel(x + tx, y + ty, c);
            }
        }
--- a/assets/zippytest.js
+++ b/assets/zippytest.js
@@ -0,0 +1,22 @@
+serial.println(typeof atob);
+
+const inputstr =
+"//////////////////////////////////////////j//////////////"+
+"/////////////////j////////////////////////z8/P///j///+hoaGhof+hof////////Pz//////j//6Gh//////+hof////////Pz//////j//6"+
+"Gh//////+hoaGhof//8/Pz8/P///j///+hoaH///+hof//oaH///Pz//////j//////6Gh//+hof//oaH///Pz//////j///////+hof+hof//oaH///P"+
+"z//////j///////+hof+hof//oaH///Pz//////j//6GhoaGh//+hof//oaH///////////j///////////////////////////////j/////////////"+
+"////////////////////////////////////////"
+serial.println(inputstr);
+//FIXME bad Base64.atob impl
+serial.println(base64.btoa(base64.atob(inputstr)))
+
+var zipbin = gzip.comp(base64.atob(inputstr));
+var zipped = base64.btoa(zipbin);
+serial.println(zipped);
+
+//var unzipped = base64.btoa(gzip.decomp(zipbin));
+var unzipped = base64.btoa(gzip.decomp(base64.atob(zipped)));
+
+serial.println(unzipped);
+
+serial.println("It is now safe to turn off");
--- a/src/net/torvald/tsvm/Base64Delegate.kt
+++ b/src/net/torvald/tsvm/Base64Delegate.kt
@@ -0,0 +1,17 @@
+package net.torvald.tsvm
+
+import com.badlogic.gdx.utils.Base64Coder
+
+class Base64Delegate {
+
+    fun atob(inputstr: String): ByteArray {
+        return Base64Coder.decode(inputstr)
+    }
+
+    fun btoa(inputbytes: ByteArray): String {
+        val sb = StringBuilder()
+        sb.append(Base64Coder.encode(inputbytes))
+        return sb.toString()
+    }
+
+}
--- a/src/net/torvald/tsvm/CompressorDelegate.kt
+++ b/src/net/torvald/tsvm/CompressorDelegate.kt
@@ -0,0 +1,41 @@
+package net.torvald.tsvm
+
+import com.badlogic.gdx.utils.compression.Lzma
+import java.io.ByteArrayInputStream
+import java.io.ByteArrayOutputStream
+import java.util.zip.GZIPInputStream
+import java.util.zip.GZIPOutputStream
+
+class CompressorDelegate {
+
+    /*fun comp(ba: ByteArray): ByteArray {
+        val bin = ByteArrayInputStream(ba)
+        val bout = ByteArrayOutputStream(256)
+        Lzma.compress(bin, bout)
+        return bout.toByteArray()
+    }
+
+    fun decomp(ba: ByteArray): ByteArray {
+        val bin = ByteArrayInputStream(ba)
+        val bout = ByteArrayOutputStream(256)
+        Lzma.decompress(bin, bout)
+        return bout.toByteArray()
+    }*/
+
+    fun comp(ba: ByteArray): ByteArray {
+        val baos = ByteArrayOutputStream()
+        val gz = GZIPOutputStream(baos)
+        gz.write(ba); gz.flush(); gz.finish()
+        baos.flush(); baos.close()
+        return baos.toByteArray()
+    }
+
+    fun decomp(ba: ByteArray): ByteArray {
+        val bais = ByteArrayInputStream(ba)
+        val gz = GZIPInputStream(bais)
+        val ret = gz.readBytes()
+        gz.close(); bais.close()
+        return ret
+    }
+
+}
--- a/src/net/torvald/tsvm/VMGUI.kt
+++ b/src/net/torvald/tsvm/VMGUI.kt
@@ -65,6 +65,7 @@ class VMGUI(val appConfig: LwjglApplicationConfiguration) : ApplicationAdapter()


        //val fr = FileReader("./assets/tvdos/command.js")
+        //val fr = FileReader("./assets/zippytest.js")
        val fr = FileReader("./assets/tvdos/fsh.js")
        //val fr = FileReader("./assets/tbas/basic.js")
        //val fr = FileReader("./assets/jscon.js")
--- a/src/net/torvald/tsvm/VMRunnerFactory.kt
+++ b/src/net/torvald/tsvm/VMRunnerFactory.kt
@@ -76,9 +76,9 @@ object VMRunnerFactory {
                    init {
                        bind.put("sys", VMJSR223Delegate(vm)) // TODO use delegator class to access peripheral (do not expose VM itself)
                        bind.put("graphics", GraphicsJSR223Delegate(vm))
-                        //bind.put("poke", { a: Long, b: Byte -> vm.poke(a, b) }) // kts: lambda does not work...
-                        //bind.put("nanotime", { System.nanoTime() })
                        bind.put("serial", VMSerialDebugger(vm))
+                        bind.put("gzip", CompressorDelegate())
+                        bind.put("base64", Base64Delegate())

                        if (extension == "js") {
                            val fr = FileReader("./assets/JS_INIT.js")