1 files changed, 45 insertions, 0 deletions
diff --git a/vendor/supply_drop/lib/supply_drop/rsync.rb b/vendor/supply_drop/lib/supply_drop/rsync.rb
new file mode 100644
index 0000000..7356653
--- /dev/null
+++ b/vendor/supply_drop/lib/supply_drop/rsync.rb
@@ -0,0 +1,45 @@
+module SupplyDrop
+  class Rsync
+    class << self
+      def command(from, to, options={})
+        flags = ['-az']
+        flags << '--delete' if options[:delete]
+        flags << excludes(options[:excludes]) if options.has_key?(:excludes)
+        flags << ssh_options(options[:ssh]) if options.has_key?(:ssh)
+
+        "rsync #{flags.compact.join(' ')} #{from} #{to}"
+      end
+
+      def remote_address(user, host, path)
+        user_with_host = [user, host].compact.join('@')
+        [user_with_host, path].join(':')
+      end
+
+      def excludes(patterns)
+        [patterns].flatten.map { |p| "--exclude=#{p}" }
+      end
+
+      def ssh_options(options)
+        mapped_options = options.map do |key, value|
+          next unless value
+
+          #
+          # for a list of the options normally support by Net::SSH (and thus Capistrano), see
+          # http://net-ssh.github.com/net-ssh/classes/Net/SSH.html#method-c-start
+          #
+          case key
+          when :keys then [value].flatten.select { |k| File.exist?(k) }.map { |k| "-i #{k}" }
+          when :config then "-F #{value}"
+          when :port then "-p #{value}"
+          when :user_known_hosts_file then "-o 'UserKnownHostsFile=#{value}'"
+          when :host_key_alias then "-o 'HostKeyAlias=#{value}'"
+          when :paranoid then "-o 'StrictHostKeyChecking=yes'"
+          when :host_name then "-o 'HostName=#{value}'"
+          end
+        end.compact
+
+        %[-e "ssh #{mapped_options.join(' ')}"] unless mapped_options.empty?
+      end
+    end
+  end
+end