Added support for nested configs via env

lib/nconf/stores/env.js

@@ -6,6 +6,7 @@
  */
 
 var util = require('util'),
+    common = require('../common'),
     Memory = require('./memory').Memory;
 
 //
@@ -17,9 +18,15 @@ var util = require('util'),
 var Env = exports.Env = function (options) {
   Memory.call(this, options);
 
+  options        = options || {};
   this.type      = 'env';
   this.readOnly  = true;
-  this.options  = options || [];
+  this.filter    = options.filter || [];
+  this.separator = options.separator || '';
+  // Backwards compatibility
+  if (options instanceof Array) {
+    this.filter = options;
+  }
 };
 
 // Inherit from the Memory store
@@ -43,9 +50,13 @@ Env.prototype.loadEnv = function () {
 
   this.readOnly = false;
   Object.keys(process.env).filter(function (key) {
-    return !self.options.length || self.options.indexOf(key) !== -1;
+    return !self.filter.length || self.filter.indexOf(key) !== -1;
   }).forEach(function (key) {
+    if (self.separator) {
+      self.set(common.key.apply(common, key.split(self.separator)), process.env[key]);
+    } else {
       self.set(key, process.env[key]);
+    }
   });
 
   this.readOnly = true;

lib/nconf/stores/memory.js

@@ -183,7 +183,7 @@ Memory.prototype.merge = function (key, value) {
   }
 
   return Object.keys(value).every(function (nested) {
-    return self.merge(fullKey + ':' + nested, value[nested]);
+    return self.merge(common.key(fullKey, nested), value[nested]);
   });
 };
 

test/stores/env-test.js

@@ -16,8 +16,9 @@ vows.describe('nconf/stores/env').addBatch({
     "should have the correct methods defined": function (env) {
       assert.isFunction(env.loadSync);
       assert.isFunction(env.loadEnv);
-      assert.isArray(env.options);
-      assert.lengthOf(env.options, 0);
+      assert.isArray(env.filter);
+      assert.lengthOf(env.filter, 0);
+      assert.equal(env.separator, '');
     }
   }
 }).export(module);