Add cmd-line help and reduce node error output by default

Added nopt package dependency - npm update required!

Added -v cmdline option to show node module load errors, which are otherwise hidden by default with only a summary shown

red/nodes.js

@@ -273,6 +273,7 @@ module.exports.load = function(settings) {
     }
     
     function loadNodes(dir) {
+        var errors = [];
         fs.readdirSync(dir).sort().filter(function(fn){
                 var stats = fs.statSync(path.join(dir,fn));
                 if (stats.isFile()) {
@@ -280,26 +281,30 @@ module.exports.load = function(settings) {
                         try {
                             require(path.join(dir,fn));
                         } catch(err) {
-                            util.log("["+fn+"] "+err);
+                            errors.push({fn:fn, err:err});
+                            //util.log("["+fn+"] "+err);
                             //console.log(err.stack);
                         }
                     }
                 } else if (stats.isDirectory()) {
                     // Ignore /.dirs/, /lib/ /node_modules/ 
                     if (!/^(\..*|lib|icons|node_modules)$/.test(fn)) {
-                        loadNodes(path.join(dir,fn));
+                        errors = errors.concat(loadNodes(path.join(dir,fn)));
                     } else if (fn === "icons") {
                         events.emit("node-icon-dir",path.join(dir,fn));
                     }
                 }
         });
+        return errors;
     }
-    loadNodes(__dirname+"/../nodes");
+    var errors = loadNodes(__dirname+"/../nodes");
     scanForNodes(__dirname+"/../nodes");
     if (settings.nodesDir) {
-        loadNodes(settings.nodesDir);
+        errors = errors.concat(loadNodes(settings.nodesDir));
         scanForNodes(settings.nodesDir);
     }
+    //console.log(errors);
+    return errors;
     //events.emit("nodes-loaded");
 }
 

red/server.js

@@ -16,6 +16,8 @@
 
 var express = require('express');
 var util = require('util');
+var when = require('when');
+
 var createUI = require("./ui");
 var redNodes = require("./nodes");
 
@@ -71,20 +73,25 @@ function createServer(_server,_settings) {
 }
 
 function start() {
+    var defer = when.defer();
+    
     storage.init(settings).then(function() {
         console.log("\nWelcome to Node-RED\n===================\n");
         util.log("[red] Loading palette nodes");
-        util.log("------------------------------------------");
-        redNodes.load(settings);
-        util.log("");
-        util.log('You may ignore any errors above here if they are for');
-        util.log('nodes you are not using. The nodes indicated will not');
-        util.log('be available in the main palette until any missing');
-        util.log('modules are installed, typically by running:');
-        util.log('   npm install {the module name}');
-        util.log('or any other errors are resolved');
-        util.log("------------------------------------------");
-        
+        var nodeErrors = redNodes.load(settings);
+        if (nodeErrors.length > 0) {
+            util.log("------------------------------------------");
+            if (settings.verbose) {
+                for (var i=0;i<nodeErrors.length;i+=1) {
+                    util.log("["+nodeErrors[i].fn+"] "+nodeErrors[i].err);
+                }
+            } else {
+                util.log("[red] Failed to register "+nodeErrors.length+" node type"+(nodeErrors.length==1?"":"s"));
+                util.log("[red] Run with -v for details");
+            }
+            util.log("------------------------------------------");
+        }
+        defer.resolve();
         storage.getFlows().then(function(flows) {
                 if (flows.length > 0) {
                     redNodes.setConfig(flows);
@@ -93,6 +100,8 @@ function start() {
                 util.log("[red] Error loading flows : "+err);
         });
     });
+    
+    return defer.promise;
 }
 
 function stop() {