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@arikui arikui/gist:69913
Created Feb 25, 2009

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Command Interpreter Protocol
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
var Ci = Components.interfaces;
var Cc = Components.classes;
var Command = {
evaluators: {
"-e": function(cmd, code, args){
return new Command.Evaluator(cmd.length ? eval(cmd) : "",
code.length? eval(code) : "",
args.length? eval(args) : "");
},
"jscript": function(cmd, code, args){
return new Command.Evaluator("cscript //E:JScript //Nologo", code, args);
},
"vbs": function(cmd, code, args){
return new Command.Evaluator("cscript //E:VBScript //Nologo", code, args);
},
__noSuchMethod__: function(id, args){
var r = /^-e\s+(.+)/;
if(r.test(args[0]))
return this["-e"](r.exec(args[0])[1], args[1], args[2]);
return new Command.Evaluator(args[0], args[1], args[2]);
// return this["-e"].apply(null, ['"' + i + '"' for each(i in args)]);
}
},
evaluate: function(evaluator){
var process = Cc["@mozilla.org/process/util;1"].createInstance(Ci.nsIProcess);
var bat = new TempFile("eval", "bat");
var script = new TempFile("eval", "code");
var out = new TempFile("eval", "out");
script.write(evaluator.code);
evaluator.code.length? bat.write([evaluator.cmd, script.file.path, evaluator.args, ">", out.file.path].join(" "))
: bat.write([evaluator.cmd, evaluator.args, ">", out.file.path].join(" "));
process.init(bat.file);
process.run(true, [], 0);
var res = out.read();
bat.remove(false);
out.remove(false);
if(script.exists)
script.remove(false);
return res;
}
};
Command.Evaluator = function(cmd, code, args){
this.cmd = cmd;
this.code = code || "";
this.args = args || "";
};
function Protocol(){}
Protocol.prototype = {
classDescription: "Command Interpreter Protocol",
classID : Components.ID("{458AA54E-3898-4237-A3B9-86BF8943D6F3}"),
contractID : "@mozilla.org/network/protocol;1?name=cmd",
QueryInterface : XPCOMUtils.generateQI([Ci.nsIProtocolHandler]),
scheme : "cmd",
defaultPort : -1,
protocolFlags: Ci.nsIProtocolHandler.URI_NORELATIVE
| Ci.nsIProtocolHandler.URI_NOAUTH
| Ci.nsIProtocolHandler.URI_DANGEROUS_TO_LOAD,
allowPort: function(port, scheme){
return false;
},
newURI: function(spec, charset, baseURI){
var uri = Cc["@mozilla.org/network/simple-uri;1"].createInstance(Ci.nsIURI);
uri.spec = spec;
return uri;
},
newChannel: function(aURI){
var ios = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService);
var comps = (new RegExp("^" + this.scheme + ":([^;]+);?([^;]*);?([^;]*)$")).exec(aURI.spec);
var cmd = decodeURIComponent(comps[1]);
var code = decodeURIComponent(comps[2]);
var args = decodeURIComponent(comps[3]);
var evalu = Command.evaluators[cmd](cmd, code, args);
var res = Command.evaluate(evalu);
log(res);
return ios.newChannel("data:text/plain;base64," + btoa(res) + "')", null, null);
}
}
function NSGetModule(compMgr, fileSpec){
return XPCOMUtils.generateModule([Protocol]);
}
/// util
function Tombloo(){
if("@brasil.to/tombloo-service;1" in Cc)
return Cc['@brasil.to/tombloo-service;1'].getService().wrappedJSObject;
return null;
}
function log(msg){
var win = Cc['@mozilla.org/appshell/window-mediator;1'].getService(Ci.nsIWindowMediator).getMostRecentWindow('navigator:browser');
if(win.FirebugConsole && win.FirebugContext){
var console = new win.FirebugConsole(win.FirebugContext, win.content);
console["log"].apply(console, arguments);
return true;
}
if(win.Firebug && win.Firebug.Console){
win.Firebug.Console.logFormatted.call(win.Firebug.Console, Array.slice(arguments), win.FirebugContext, "log");
return true;
}
Cc["@mozilla.org/consoleservice;1"].getService(Ci.nsIConsoleService).logStringMessage('' + msg);
}
function TempFile(name, ext){
var file = Cc["@mozilla.org/file/directory_service;1"].getService(Ci.nsIProperties).get("TmpD", Ci.nsIFile);
file.append([name, (new Date()).getTime(), "tmp", ext].join("."));
this.file = file;
}
TempFile.prototype = {
read: function(){
var istream = Cc["@mozilla.org/network/file-input-stream;1"] .createInstance(Ci.nsIFileInputStream);
istream.init(this.file, 0x01, 0444, 0);
istream.QueryInterface(Ci.nsILineInputStream);
var line = {}, lines = [], hasmore;
do{
hasmore = istream.readLine(line);
lines.push(line.value);
}
while(hasmore)
istream.close();
return lines.join("\n");
},
write: function(data){
if(!data.length)
return false;
var foStream = Cc["@mozilla.org/network/file-output-stream;1"].createInstance(Ci.nsIFileOutputStream);
foStream.init(this.file, 0x02 | 0x08 | 0x20, 0664, -1);
foStream.write(data, data.length);
foStream.close();
},
remove: function(){
this.file.remove(false);
this.file = null;
}
};
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