Implemented vagrant sync-cleanup

Fixes mrdavidlaing#14
Run it after you do "vagrant destroy; vagrant up"

README.md

@@ -42,6 +42,21 @@ which must be installed in your path.
 
 Run `vagrant sync-repeat` to start in bidirect monitor (repeat) mode.
 
+## Cleanup unison database
+When you get
+```
+Fatal error: Warning: inconsistent state.  
+The archive file is missing on some hosts.
+For safety, the remaining copies should be deleted.
+  Archive arb126d8de1ef26a835b94cf51975c530f on host blablabla.local should be DELETED
+  Archive arbc6a36f85b3d1473c55565dd220acf68 on host blablabla is MISSING
+Please delete archive files as appropriate and try again
+or invoke Unison with -ignorearchives flag.
+```
+
+Run `vagrant sync-cleanup` to clear Archive from ~/Library/Application Support/Unison/ and files from host folder.
+Running Unison with -ignorearchives flag is a bad idea, since it will produce conflicts.
+
 ## Development
 
 To work on the `vagrant-unison` plugin, clone this repository out, and use

lib/vagrant-unison/command.rb

@@ -155,7 +155,43 @@ def trigger_unison_sync(machine)
         ].flatten.join(" ")
 
         # Unison over to the guest path using the SSH info
-        command = "unison -terse -repeat 1 -sshargs \"#{rsh}\" hosts ssh://#{ssh_info[:username]}@#{ssh_info[:host]}/#{guestpath}"
+        command = 'unison -ignore "Name {.idea}" -terse -repeat 1 -sshargs "'+rsh+'" hosts '+"ssh://#{ssh_info[:username]}@#{ssh_info[:host]}/#{guestpath}"
+        @env.ui.info "Running #{command}"
+
+        system(command)
+      end
+
+    end
+    class CommandCleanup < Vagrant.plugin("2", :command)
+
+      def execute
+
+        with_target_vms do |machine|
+          hostpath, guestpath = init_paths machine
+
+          trigger_unison_sync machine
+
+        end
+
+        0  #all is well
+      end
+
+      def init_paths(machine)
+          hostpath  = File.expand_path(machine.config.sync.host_folder, @env.root_path)
+          guestpath = machine.config.sync.guest_folder
+
+          # Make sure there is a trailing slash on the host path to
+          # avoid creating an additional directory with rsync
+          hostpath = "#{hostpath}/" if hostpath !~ /\/$/
+
+          [hostpath, guestpath]
+      end
+
+      def trigger_unison_sync(machine)
+        hostpath, guestpath = init_paths machine
+
+        # Unison over to the guest path using the SSH info
+        command = "rm -rf ~/Library/'Application Support'/Unison/* ; rm -rf #{guestpath}/*"
         @env.ui.info "Running #{command}"
 
         system(command)

lib/vagrant-unison/plugin.rb

@@ -44,6 +44,16 @@ class Plugin < Vagrant.plugin("2")
         CommandRepeat
       end
 
+      command "sync-cleanup" do
+        # Setup logging and i18n
+        setup_logging
+        setup_i18n
+
+        #Return the command
+        require_relative "command"
+        CommandCleanup
+      end
+
       # This initializes the internationalization strings.
       def self.setup_i18n
         I18n.load_path << File.expand_path("locales/en.yml", Unison.source_root)

lib/vagrant-unison/version.rb

@@ -1,5 +1,5 @@
 module VagrantPlugins
   module Unison
-    VERSION = "0.0.12"
+    VERSION = "0.0.13"
   end
 end