Add setting to enable/disable file renaming

Author: JeremyPlease

README.md

@@ -59,6 +59,8 @@ $ npm start config.js
 * `masterKey`: Parse master key.
 * `serverURL`: The URL for the Parse server (default: http://api.parse.com/1). 
 This is used to with `applicationId` and `masterKey` to get the schema and fetch all files/objects.
+* `renameFiles` (boolean): Whether or not to rename Parse hosted files. 
+This removes the "tfss-" or legacy Parse filename prefix before saving with the new file adapter.
 * `renameInDatabase` (boolean): Whether or not to rename files in MongoDB.
 * `mongoURL`: MongoDB connection url. 
 Direct access to the database is needed because Parse SDK doesn't allow direct writing to file fields.

lib/questions.js

@@ -34,13 +34,24 @@ function questions(config) {
         {name: 'All files', value: 'all'}
       ],
       when: (['parseOnly','parseServerOnly', 'all'].indexOf(config.filesToTransfer) == -1)
+    }, {
+      type: 'confirm',
+      name: 'renameFiles',
+      message: 'Rename Parse hosted file names?',
+      default: false,
+      when: function(answers) {
+        return config.renameFiles == undefined &&
+               (answers.filesToTransfer == 'all' || config.filesToTransfer == 'all' ||
+               config.filesToTransfer == 'parseOnly' || answers.filesToTransfer == 'parseOnly');
+      }
     }, {
       type: 'confirm',
       name: 'renameInDatabase',
       message: 'Rename Parse hosted files in the database after transfer?',
       default: false,
       when: function(answers) {
-        return !config.renameInDatabase &&
+        return config.renameInDatabase == undefined &&
+               (answers.renameFiles || config.renameFiles) &&
                (answers.filesToTransfer == 'all' || config.filesToTransfer == 'all' ||
                config.filesToTransfer == 'parseOnly' || answers.filesToTransfer == 'parseOnly');
       }

lib/transfer.js

@@ -92,6 +92,9 @@ function _requestErrorHandler(error, response) {
  * @return {String}
  */
 function _createNewFileName(fileName) {
+  if (!config.renameFiles) {
+    return fileName;
+  }
   if (_isParseHostedFile(fileName)) {
     fileName = fileName.replace('tfss-', '');
     var newPrefix = crypto.randomBytes(32/2).toString('hex');