In Windows, you can run this file from the command prompt in cscript.exe, and it provides an simple interactive shell. No completion.
// shell.js
// ------------------------------------------------------------------
//
// implements an interactive javascript shell.
//
// from
// http://kobyk.wordpress.com/2007/09/14/a-jscript-interactive-interpreter-shell-for-the-windows-script-host/
//
// Sat Nov 28 00:09:55 2009
//
var GSHELL = (function () {
var numberToHexString = function (n) {
if (n >= 0) {
return n.toString(16);
} else {
n += 0x100000000;
return n.toString(16);
}
};
var line, scriptText, previousLine, result;
return function() {
while(true) {
WScript.StdOut.Write("js> ");
if (WScript.StdIn.AtEndOfStream) {
WScript.Echo("Bye.");
break;
}
line = WScript.StdIn.ReadLine();
scriptText = line + "\n";
if (line === "") {
WScript.Echo(
"Enter two consecutive blank lines to terminate multi-line input.");
do {
if (WScript.StdIn.AtEndOfStream) {
break;
}
previousLine = line;
line = WScript.StdIn.ReadLine();
line += "\n";
scriptText += line;
} while(previousLine != "\n" || line != "\n");
}
try {
result = eval(scriptText);
} catch (error) {
WScript.Echo("0x" + numberToHexString(error.number) + " " + error.name + ": " +
error.message);
}
if (result) {
try {
WScript.Echo(result);
} catch (error) {
WScript.Echo("<<>>");
}
}
result = null;
}
};
})();
GSHELL();
If you want, you can augment that with other utility libraries, with a .wsf file. Save the above to "shell.js", and save the following to "shell.wsf":
<job>
<reference object="Scripting.FileSystemObject" />
<script language="JavaScript" src="util.js" />
<script language="JavaScript" src="shell.js" />
</job>
...where util.js is:
var quit = function(x) { WScript.Quit(x);}
var say = function(s) { WScript.Echo(s); };
var echo = say;
var exit = quit;
var sleep = function(n) { WScript.Sleep(n*1000); };
...and then run shell.wsf from the command line.
