Move command out of the index.js

lib/command.js

@@ -0,0 +1,13 @@
+'use strict';
+
+// This Command constructor is ever so slightly faster than using an object literal, but more importantly, using
+// a named constructor helps it show up meaningfully in the V8 CPU profiler and in heap snapshots.
+function Command(command, args, sub_command, buffer_args, callback) {
+    this.command = command;
+    this.args = args;
+    this.sub_command = sub_command;
+    this.buffer_args = buffer_args;
+    this.callback = callback;
+}
+
+module.exports = Command;

lib/parsers/javascript.js

@@ -130,23 +130,23 @@ ReplyParser.prototype.execute = function (buffer) {
         try {
             type = this._buffer[this._offset++];
 
-            if (type === 43) { // +
+            if (type === 43) { // Strings +
                 ret = this._parseResult(type);
 
                 this.send_reply(ret);
-            } else  if (type === 45) { // -
+            } else  if (type === 45) { // Errors -
                 ret = this._parseResult(type);
 
                 this.send_error(ret);
-            } else if (type === 58) { // :
+            } else if (type === 58) { // Integers :
                 ret = this._parseResult(type);
 
                 this.send_reply(ret);
-            } else if (type === 36) { // $
+            } else if (type === 36) { // Bulk strings $
                 ret = this._parseResult(type);
 
                 this.send_reply(ret);
-            } else if (type === 42) { // 42 *
+            } else if (type === 42) { // Arrays *
                 // set a rewind point. if a failure occurs,
                 // wait for the next execute()/append() and try again
                 offset = this._offset - 1;

lib/utils.js

@@ -46,8 +46,20 @@ function toArray(args) {
     return arr;
 }
 
+function print (err, reply) {
+    if (err) {
+        console.log("Error: " + err);
+    } else {
+        console.log("Reply: " + reply);
+    }
+}
+
+var redisErrCode = /^([A-Z]+)\s+(.+)$/;
+
 module.exports = {
     reply_to_strings: replyToStrings,
     reply_to_object: replyToObject,
-    to_array: toArray
+    to_array: toArray,
+    print: print,
+    errCode: redisErrCode
 };