RegistryFile to OverrideFile

test/lib/OverrideFile.js

@@ -0,0 +1,46 @@
+'use strict';
+
+var util = require('util');
+var path = require('path');
+var JsonFile = require('./JsonFile');
+var CANONICAL_NAME_EXPECTATION = /^([^:\s]*):([^\s]*)$/;
+
+/**
+ * @constructor OverrideFile
+ */
+var OverrideFile = module.exports = function OverrideFile(){
+
+	if( !(this instanceof OverrideFile) )
+		return new OverrideFile();
+
+	JsonFile.call(this, path.resolve('./registry.json'));
+};
+
+util.inherits(OverrideFile, JsonFile);
+
+OverrideFile.prototype.forEachRegistryEntry = function(fn){
+
+	return this.forEach(function(canonicalPackageName, registryEntryName){
+
+		var pkg = {};
+		var match = CANONICAL_NAME_EXPECTATION.exec(canonicalPackageName);
+
+		if (!match) {
+			pkg = {
+				canonical: canonicalPackageName,
+				endpoint: undefined,
+				name: undefined,
+			};
+		
+		} else {
+			pkg = {
+				canonical: match[0], 
+				endpoint: match[1],
+				name: match[2],
+			};
+		}
+
+		fn.call(this, pkg, registryEntryName);
+	});
+
+};