Ports the basic script to split modules

1 files changed, 50 insertions, 0 deletions

diff --git a/lib/util.js b/lib/util.js
new file mode 100644
index 0000000..3234d3e
--- /dev/null
+++ b/lib/util.js
@@ -0,0 +1,50 @@
+'use strict';
+
+const Fs = require('fs');
+const Path = require('path');
+
+// Module containing utility functions.
+const Util = {
+
+  // Parses a 16 bit number buffer.
+  parse16BitBuffer: function (buffer) {
+    return buffer[0] * 256 + buffer[1];
+  },
+
+  // Picks a random element from an array.
+  pickRandom: function (array) {
+    return array[Math.floor(Math.random() * array.length)];
+  },
+
+  // For a given path, requires all of the files and returns an array
+  // with the results. If the directory contains any non-requireable file,
+  // it will fail.
+  loadFiles: function (path) {
+    return new Promise(function (resolve, reject) {
+      Fs.readdir(path, function (err, files) {
+        if (err) {
+          return reject(err);
+        }
+
+        let loadedFiles = [];
+
+        for (let file of files) {
+          let filePath = Path.join(path, file);
+          let loadedFile;
+
+          try {
+            loadedFile = require(filePath);
+          } catch (err) {
+            return reject(err);
+          }
+
+          loadedFiles.push(loadedFile);
+        }
+
+        resolve(loadedFiles);
+      });
+    });
+  }
+};
+
+module.exports = Util;