From a522b71809f579a211e798a73224abbf59cc68d4 Mon Sep 17 00:00:00 2001
From: Gene <pandalion98@users.noreply.github.com>
Date: Wed, 11 Nov 2015 21:55:06 +0800
Subject: [PATCH] Added save function (UNTESTED)

Utilizes JSON. Might have to double-check the dependencies. Might even need to re-do the load/save function. Should check if file exists and is writable.
---
 lib/ector.js | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/lib/ector.js b/lib/ector.js
index 9aeecf5..ebbbcdb 100644
--- a/lib/ector.js
+++ b/lib/ector.js
@@ -17,6 +17,7 @@ var concept_network = require('concept-network');
 var ConceptNetwork = concept_network.ConceptNetwork;
 var ConceptNetworkState = concept_network.ConceptNetworkState;
 var rwc = require('random-weighted-choice');
+var fs = require('fs');
 
 /**
  * ## Ector's constructor
@@ -342,6 +343,34 @@ Ector.prototype = {
       this.cn = new ConceptNetwork();
       throw new Error('NewConceptNetwork is not a ConceptNetwork');
     }
+  },
+  
+  /**
+   * ### saveCN
+   * @param {string} file path and name. e.g. /home/ubuntu/node.json
+   * @return {string|Error} true, or an Error.
+   */
+  saveCN : function (filePath) {
+    if (typeof filePath !== 'string') {
+      return new Error("filePath should be a string");
+    }
+    
+    fs.writeFileSync(filePath, JSON.stringify(this.cn));
+    return true;
+  },
+  
+  /**
+   * ### loadCN
+   * @param {string} file path and name. e.g. /home/ubuntu/node.json
+   * @return {string|Error} true, or an Error.
+   */
+  loadCN : function (filePath) {
+    if (typeof filePath !== 'string') {
+      return new Error("filePath should be a string");
+    }
+    
+    Object.merge(this.cn, JSON.parse(fs.readFileSync(filePath, 'utf8')));
+    return true;
   }
 
 };