Directory indexing for creating search database

AasthaGupta · AasthaGupta · commit 5308560a4c92 · 2018-03-19T01:12:22.000+05:30
Fixes #70 This will ease the process of updating search entries because now we don't have to maintain a hard-coded database and a simple update in the directory will be enough.
diff --git a/code/js/metadata.js b/code/js/metadata.js
@@ -0,0 +1,55 @@
+// Copyright (c) 2018 The OpenGenus Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+var obj = {};
+
+function readDirectory(dirEntry) {
+	var dirReader = dirEntry.createReader();
+	dirReader.readEntries(function(entries) {
+		for(var i = 0; i < entries.length; i++) {
+			var entry = entries[i];
+			if (entry.isDirectory){
+				readDirectory(entry);
+			}
+			else if (entry.isFile) {
+				var filename = entry.name;				
+				var filepath = entry.fullPath.split("/").slice(2,-1).join("/");
+				if (!obj[filepath]) {
+					obj[filepath] = [];
+				}
+				obj[filepath].push(filename);
+			}
+		}
+		localStorage["metadata"] = JSON.stringify(obj);
+	});
+}
+
+function populate () {
+	chrome.runtime.getPackageDirectoryEntry(function(storageRootEntry) {
+		if(storageRootEntry.isDirectory) {
+			var dirReader = storageRootEntry.createReader();
+
+			var readEntries = function() {
+				dirReader.readEntries(function(entries) {
+					for(var i = 0; i < entries.length; i++) {
+						var entry = entries[i];
+						if (entry.name === "code") {
+							readDirectory(entry);
+							break;
+						}
+					}
+
+					if (!entries.length)
+						readEntries();
+				});
+			};
+
+			readEntries();
+		}
+	});	
+}
+
+if (!localStorage["metadata"]) {
+	populate();
+}
diff --git a/code/js/popup.js b/code/js/popup.js
diff --git a/code/popup.html b/code/popup.html
@@ -1,6 +1,6 @@
 <html>
 <head>
-
+  <script src="js/metadata.js"></script>
   <script src="js/jquery.js"></script>
   <script src="js/popper.min.js"></script>
   <script src="js/bootstrap.min.js"></script>
