Split nodejs example

examples/nodejs_state.js

@@ -0,0 +1,70 @@
+#!/usr/bin/env node
+"use strict";
+
+var fs = require("fs");
+var V86Starter = require("../build/libv86.js").V86Starter;
+
+function readfile(path)
+{
+    return new Uint8Array(fs.readFileSync(path)).buffer;
+}
+
+console.log("Use F2 to save the state and F3 to restore.");
+
+var bios = readfile(__dirname + "/../bios/seabios.bin");
+var linux = readfile(__dirname + "/../images/linux.iso");
+
+process.stdin.setRawMode(true);
+process.stdin.resume();
+process.stdin.setEncoding("utf8");
+
+console.log("Now booting, please stand by ...");
+
+var emulator = new V86Starter({
+    bios: { buffer: bios },
+    cdrom: { buffer: linux },
+    autostart: true,
+});
+
+emulator.add_listener("serial0-output-char", function(chr)
+{
+    process.stdout.write(chr);
+});
+
+var state;
+
+process.stdin.on("data", function(c)
+{
+    if(c === "\u0003")
+    {
+        // ctrl c
+        process.exit();
+    }
+    else if(c === "\x1b\x4f\x51")
+    {
+        // f2
+        emulator.save_state(function(err, s)
+        {
+            console.log("--- Saved ---");
+            if(err)
+            {
+                throw err;
+            }
+
+            state = s;
+        });
+    }
+    else if(c === "\x1b\x4f\x52")
+    {
+        // f3
+        if(state)
+        {
+            console.log("--- Restored ---");
+            emulator.restore_state(state);
+        }
+    }
+    else
+    {
+        emulator.serial0_send(c);
+    }
+});