Check if directory exists on loadDirectory()

Fixes aichaos#117

README.md

@@ -24,6 +24,12 @@ through npm:
 
 `npm install rivescript`
 
+For the web you can use the npmcdn:
+
+```html
+<script src="https://npmcdn.com/rivescript@latest/dist/rivescript.min.js"></script>
+```
+
 The GitHub repository for this project only includes the CoffeeScript sources.
 To download a compiled JavaScript release of this library, check the
 [Releases](https://github.com/aichaos/rivescript-js/releases) tab. The compiled

contrib/coffeescript/README.md

@@ -2,6 +2,14 @@
 
 This provides a CoffeeScript language handler for RiveScript object macros.
 
+# Installation
+
+```npm install rivescript-contrib-coffeescript```
+
+```html
+<script src="https://npmcdn.com/rivescript-contrib-coffeescript@latest/dist/rivescript-contrib-coffeescript.min.js"></script>
+```
+
 # Usage
 
 ## In nodejs

package.json

@@ -15,14 +15,12 @@
   "author": "Noah Petherbridge <[email protected]> (http://www.kirsle.net/)",
   "main": "lib/rivescript.js",
   "files": [
-    "lib/rivescript.js",
-    "lib/brain.js",
-    "lib/inheritance.js",
-    "lib/parser.js",
-    "lib/sorting.js",
-    "lib/utils.js",
-    "lib/lang/coffee.js",
-    "lib/lang/javascript.js"
+    "README.md",
+    "LICENSE",
+    "Changes.md",
+    "lib/",
+    "dist/",
+    "docs/"
   ],
   "directories": {
     "lib": "lib",

shell.coffee

@@ -87,6 +87,8 @@ bot.loadDirectory opts.brain, (batch_num) ->
     rl.prompt()
   .on "close", () ->
     process.exit 0
+, (err, loadBatch) ->
+  console.error "Loading error: #{err}"
 
 help = () ->
   console.log """Supported commands:

shell.js

@@ -54,7 +54,7 @@ var bot = new RiveScript({
 	debug: opts.debug,
 	utf8:  opts.utf8,
 });
-bot.loadDirectory(opts.brain, loading_done);
+bot.loadDirectory(opts.brain, loading_done, loading_error);
 
 function loading_done(batch_num) {
 	bot.sortReplies();
@@ -103,6 +103,10 @@ function loading_done(batch_num) {
 	});
 }
 
+function loading_error(error, loadBatch) {
+	console.error("Loading error: " + error);
+}
+
 function help() {
 	console.log("Supported commands:");
 	console.log("/help        : Show this text.");

src/rivescript.coffee

@@ -373,20 +373,34 @@ class RiveScript
     @_pending[loadCount] = {}
     toLoad = []
 
-    @say "Loading batch #{loadCount} from directory #{path}"
-
-    # Load all the files.
-    files = readDir(path)
-    for file in files
-      if file.match(/\.(rive|rs)$/i)
-        # Keep track of the file's status.
-        @_pending[loadCount][path+"/"+file] = 1
-        toLoad.push path+"/"+file
-
-    # Load all the files.
-    for file in toLoad
-      @say "Parsing file #{file} from directory"
-      @_nodeLoadFile loadCount, file, onSuccess, onError
+    # Default error handler/dummy function.
+    if not onError?
+      onError = () ->
+        return
+
+    # Verify the directory exists.
+    @_node.fs.stat(path, (err, stats) =>
+      if err
+        return onError.call undefined, err, loadCount
+
+      if not stats.isDirectory()
+        return onError.call undefined, "#{path} is not a directory", loadCount
+
+      @say "Loading batch #{loadCount} from directory #{path}"
+
+      # Load all the files.
+      files = readDir(path)
+      for file in files
+        if file.match(/\.(rive|rs)$/i)
+          # Keep track of the file's status.
+          @_pending[loadCount][path+"/"+file] = 1
+          toLoad.push path+"/"+file
+
+      # Load all the files.
+      for file in toLoad
+        @say "Parsing file #{file} from directory"
+        @_nodeLoadFile loadCount, file, onSuccess, onError
+    )
 
   ##
   # bool stream (string code[, func onError])