added -v cmdline option (for debug)

node-chargen.js

@@ -3,11 +3,14 @@
 var sys		= require('sys');
 var http	= require('http'); 
 
-var create	= function(){
+var create	= function(opts){
+	// alias opts for readability and default values
+	var verbose	= opts['verbose'] || 0;
 	// pattern which gonna be displayed
 	var pattern	= "!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefg";
 	// create the http server
 	var server	= http.createServer(function (request, response) {
+		if( verbose > 0 )	console.log("Client connected");
 		response.writeHead(200, {
 			'Content-Type'		: 'text/plain',
 			'Transfer-Encoding'	: 'identity'		// to force a non-chunked response
@@ -24,6 +27,7 @@ var create	= function(){
 		var main_loop	= function(){
 			// if the client closes the connection, stop looping
 			if(stoploop){
+				if( verbose > 0 )	console.log("Client disconnected");
 				response.end();
 				return;
 			}
@@ -33,6 +37,8 @@ var create	= function(){
 			nb_line++;
 			// write the content to the response
 			response.write(content);
+			// log to debug
+			if( verbose > 1 )	console.log("One line written");
 			// defer the next iteration 
 			setTimeout(main_loop, 10);
 		}
@@ -51,7 +57,33 @@ exports.create	= create;
 //		Main code							//
 //////////////////////////////////////////////////////////////////////////////////
 if( process.argv[1] == __filename ){
-	server	= create();
+	var verbose	= 0;
+
+	//////////////////////////////////////////////////////////////////////////////////
+	//	parse cmdline								//
+	//////////////////////////////////////////////////////////////////////////////////
+	var optind	= 2;
+	for(;optind < process.argv.length; optind++){
+		var key	= process.argv[optind];
+		var val	= process.argv[optind+1];
+		//sys.puts("key="+key+" val="+val);
+		if( key == "-v" || key == "--verbose" ){
+			verbose		+= 1;
+		}else if( key == "-h" || key == "--help" ){
+			sys.puts("usage: node-chargen [-v]");
+			sys.puts("");
+			sys.puts("-v|--verbose\tIncrease the verbose level (for debug).");
+			process.exit(0);
+		}else{
+			// if the option doesnt exist, consider it is the first non-option parameters
+			break;
+		}
+	}
+
+	opts	= {
+		"verbose"	: verbose
+	}
+	server	= create(opts);
 	server.listen(8124, "127.0.0.1");
 	sys.puts('Server running at http://127.0.0.1:8124/');
 }