Ruby compatability: only 1.9.3+ have chmod_R string modes

.travis.yml

@@ -1,6 +1,7 @@
 language: ruby
 rvm:
   - 1.8.7
+  - 1.9.2
   - 1.9.3
 script: "bundle exec rake spec"
 

lib/imap/backup/serializer/directory.rb

@@ -1,4 +1,5 @@
 # encoding: utf-8
+require 'fileutils'
 
 module Imap
   module Backup
@@ -9,8 +10,9 @@ class Directory
 
         def initialize(path, folder)
           @path, @folder = path, folder
-          check_permissions(@path, 0700)
-          make_folder(@path, @folder, 'g-wrx,o-wrx')
+          permissions = 0700
+          check_permissions(@path, permissions)
+          make_folder(@path, @folder, permissions)
         end
 
         def uids

lib/imap/backup/utils.rb

@@ -1,3 +1,4 @@
+# encoding: utf-8
 require 'fileutils'
 
 module Imap
@@ -17,9 +18,9 @@ def make_folder(base_path, path, permissions)
         parts = path.split('/')
         return if parts.size == 0
         full_path = File.join(base_path, path)
-        FileUtils.mkdir_p(full_path)
+        FileUtils.mkdir_p full_path
         first_directory = File.join(base_path, parts[0])
-        FileUtils.chmod_R(permissions, first_directory)
+        FileUtils.chmod permissions, first_directory
       end
 
       private

spec/unit/serializer/directory_spec.rb

@@ -23,7 +23,7 @@
       stat = stub('File::Stat', :mode => 0700)
       File.stub!(:stat).with('/base/path').and_return(stat)
       FileUtils.stub!(:mkdir_p).with('/base/path/my_folder')
-      FileUtils.stub!(:chmod_R).with('g-wrx,o-wrx', '/base/path/my_folder')
+      FileUtils.stub!(:chmod).with(0700, '/base/path/my_folder')
     end
 
     subject { Imap::Backup::Serializer::Directory.new('/base/path', 'my_folder') }

spec/unit/utils_spec.rb

@@ -52,7 +52,7 @@
     end
 
     it 'should create the path' do
-      FileUtils.stub!(:chmod_R)
+      FileUtils.stub!(:chmod)
 
       FileUtils.should_receive(:mkdir_p).with('/base/path/new/folder')
 
@@ -62,7 +62,7 @@
     it 'should set permissions on the path' do
       FileUtils.stub!(:mkdir_p)
 
-      FileUtils.should_receive(:chmod_R).with(0222, '/base/path/new')
+      FileUtils.should_receive(:chmod).with(0222, '/base/path/new')
 
       make_folder('/base/path', 'new/folder', 0222)
     end