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src/commandline.js

@@ -34,8 +34,43 @@ Command.prototype.getRegexMap = function() {
   };
 };
 
+Command.prototype.getSandboxCommands = function() {
+  return [
+    [/^ls/, function() {
+      throw new CommandResult("\
+        DontWorryAboutFilesInThisDemo.txt\
+      ");
+    }],
+    [/^cd/, function() {
+      throw new CommandResult("\
+        Directory Changed to '/directories/dont/matter/in/this/demo' \
+      ");
+    }],
+    [/^git$/, function() {
+      throw new CommandResult("\
+        Git Version PCOTTLE.1.0\
+        Usage:\
+          git <command> [<args>] \
+      ");
+    }]
+  ];
+};
+
 Command.prototype.parse = function(str) {
-  // first check if shortcut exists, and replace, but
+  // first if the string is empty, they just want a blank line
+  if (!str.length) {
+    throw new CommandResult("");
+  }
+
+  // then check if it's one of our sandbox commands
+  _.each(this.getSandboxCommands(), function(tuple) {
+    var regex = tuple[0];
+    if (regex.exec(str)) {
+      tuple[1]();
+    }
+  });
+
+  // then check if shortcut exists, and replace, but
   // preserve options if so
   _.each(this.getShortcutMap(), function(regex, method) {
     var results = regex.exec(str);
@@ -46,9 +81,14 @@ Command.prototype.parse = function(str) {
 
   // see if begins with git
   if (str.slice(0,3) !== 'git') {
-    throw new Error('Git commands only, sorry!');
+    throw new CommandProcessError('Git commands only, sorry!');
   }
 
+  // ok, we have a (probably) valid command. actually parse it
+  this.gitParse(str);
+};
+
+Command.prototype.gitParse = function(str) {
   // now slice off command part
   this.fullCommand = str.slice('git '.length);
 
@@ -65,7 +105,7 @@ Command.prototype.parse = function(str) {
   }, this);
 
   if (!matched) {
-    throw new Error(
+    throw new CommandProcessError(
       "Sorry, this demo does not support that git command: " + this.fullCommand
     );
   }

src/errors.js

@@ -2,18 +2,18 @@ function CommandProcessError(msg) {
   this.msg = msg; 
 }
 
-CommandProcessError.prototype = _.copy(Error.prototype);
-
 CommandProcessError.prototype.toString = function() {
   return 'Command Process Error: ' + this.msg;
 };
 
+CommandProcessError.prototype.toResult = function() {
+  return this.msg.replace('\n', '</br>');
+};
+
 function CommandResult(msg) {
   this.msg = msg; 
 }
 
-CommandResult.prototype = _.copy(Error.prototype);
-
 CommandResult.prototype.toString = function() {
   return 'Command Result: ' + this.msg;
 };

src/index.html

@@ -50,5 +50,6 @@
   <script src="git.js"></script>
   <script src="commandline.js"></script>
   <script src="views.js"></script>
+  <script src="errors.js"></script>
 </body>
 </html>

src/views.js

@@ -43,21 +43,18 @@ var CommandLineView = Backbone.View.extend({
   },
 
   submit: function() {
-    var value = this.$('#commandTextField').val();
+    var value = this.$('#commandTextField').val().replace('\n', '');
     this.$('#commandTextField').val('');
+
+    events.trigger('commandConsumed', value);
+
     try {
       var command = new Command(value);
       console.log(command);
       // immediately execute for now, will change later
       events.trigger('gitCommandReady', command);
     } catch (err) {
-      if (err instanceof CommandProcessError) {
-        events.trigger('commandProcessError', err);
-      } else if (err instanceof CommandResultError) {
-
-      } else {
-        throw err;
-      }
+      this.processError(err);
     }
   }
 });
@@ -77,16 +74,16 @@ var CommandLineHistoryView = Backbone.View.extend({
     ));
 
     this.commandTemplate = ' \
-      <p class="commandLine <%= class %>"> \
+      <p class="commandLine <%= className %>"> \
         <span class="arrows">&gt; &gt; &gt;</span> \
         <%= command %>  \
       </p> \
     ';
 
     this.resultTemplate = ' \
-      <p class="commandResult <%= class %>"> \
-        <%= result %>
-      </p>
+      <p class="commandResult <%= className %>"> \
+        <%= result %> \
+      </p> \
     ';
   },
 
@@ -95,7 +92,7 @@ var CommandLineHistoryView = Backbone.View.extend({
       _.template(
         this.commandTemplate,
         {
-          class: 'pastCommand',
+          className: 'pastCommand',
           command: commandText
         }
       )
@@ -107,7 +104,7 @@ var CommandLineHistoryView = Backbone.View.extend({
       _.template(
         this.resultTemplate,
         {
-          class: 'errorResult',
+          className: 'errorResult',
           result: err.toResult()
         }
       )
@@ -115,11 +112,15 @@ var CommandLineHistoryView = Backbone.View.extend({
   },
 
   commandResultPrint: function(err) {
+    if (!err.msg.length) {
+      // blank lines
+      return;
+    }
     this.$('#commandDisplay').append(
       _.template(
         this.resultTemplate,
         {
-          class; 'commandResult',
+          className: 'commandResult',
           result: err.toResult()
         }
       )