Ensure directory exists is now recursive

lib/customUtils.js

@@ -1,20 +1,35 @@
 var fs = require('fs')
   , crypto = require('crypto')
+  , path = require('path')
   ;
 
 
 /**
- * Check if directory exists and create it on the fly if it is not the case
- * TODO: make recursive
+ * Check if a directory exists and create it on the fly if it is not the case
+ * Does it recursively
+ * cb is optional, signature: err
  */
 function ensureDirectoryExists (dir, cb) {
-  var callback = cb || function () {};
+  var callback = cb || function () {}
+    , parts, currentPart
+    ;
+
+  if (typeof dir === 'string') { return ensureDirectoryExists({ toTreat: dir, treated: '' }); }
+  if (dir.toTreat.length === 0) { return callback(); }
+
+  parts = dir.toTreat.split(path.sep);
+  currentPart = path.join(dir.treated, parts[0]);
 
-  fs.exists(dir, function (exists) {
+  parts = parts.slice(1).join(path.sep);
+
+  fs.exists(currentPart, function (exists) {
     if (exists) {
-      return callback();
+      return ensureDirectoryExists({ toTreat: parts, treated: currentPart }, callback);
     } else {
-      fs.mkdir(dir, '0777', callback);
+      return fs.mkdir(currentPart, '0777', function (err) {
+        if (err) { return callback(err); }
+        return ensureDirectoryExists({ toTreat: parts, treated: currentPart }, callback);
+      });
     }
   });
 }