bin/qcmd in qcmd-0.1.13 vs bin/qcmd in qcmd-0.1.14

@@ -9,16 +9,52 @@
 
 opts = Trollop::options do
   version VERSION_STRING
   opt :verbose, 'Use verbose mode', :default => false
   opt :debug, "Show full debug output, don't make changes to workspaces", :default => false
-  opt :machine, "Automatically try to connect to the machine with the given name", :type => :string
-  opt :workspace, "Automatically try to connect to the workspace with the given name", :type => :string
-  opt :workspace_passcode, "Use the given workspace passcode", :type => :integer
-  opt :command, "Execute a single command and exit", :type => :string
+  opt :machine, 'Automatically try to connect to the machine with the given name', :type => :string
+  opt :workspace, 'Automatically try to connect to the workspace with the given name', :type => :string
+  opt :workspace_passcode, 'Use the given workspace passcode', :type => :integer
+  opt :command, 'Execute a single command and exit', :type => :string
+  opt :version_check, 'Check if a new version of qcmd is available and quit', :default => false
 end
 
 Qcmd.log_level = :info
+
+if opts[:version_check]
+  if Qcmd.available_version
+    if Qcmd.installed_version.to_s != Qcmd.available_version.to_s
+      puts "You have version #{ Qcmd.installed_version }, but #{ Qcmd.available_version.to_s } is available."
+      puts "Run `sudo gem update qcmd` to get the most recent version."
+    else
+      puts "You have the current version of qcmd installed."
+      puts VERSION_STRING
+    end
+  else
+    puts "We were unable to reach #{ Qcmd.rubygems_uri } to check the available qcmd version."
+  end
+
+  exit
+else
+  # version check on every command line open
+  Qcmd.while_quiet do
+    if !Qcmd::Configuration.config['skip_version_warning'] && Qcmd.available_version
+      known_available_version = Qcmd::Configuration.config['available_version']
+
+      if Qcmd.installed_version.to_s != Qcmd.available_version.to_s &&
+          (!Qcmd::Configuration.config['version_warning'] || Qcmd.available_version != known_available_version)
+        # use 'puts' to make sure the message is available
+        puts "A new version of qcmd is available! You have #{ Qcmd.installed_version }, but #{ Qcmd.available_version.to_s } is the most recent."
+        puts
+
+        Qcmd::Configuration.update('available_version', Qcmd.available_version)
+        Qcmd::Configuration.update('version_warning', true)
+      end
+    else
+      Qcmd::Configuration.update('skip_version_warning', true)
+    end
+  end
+end
 
 if opts[:verbose]
   Qcmd.log_level = :debug
 end