SX cap production setup files

lib/capistrano/template.rb

@@ -0,0 +1,32 @@
+# will first try and copy the file:
+# config/deploy/#{full_app_name}/#{from}.erb
+# to:
+# shared/config/to
+# if the original source path doesn exist then it will
+# search in:
+# config/deploy/shared/#{from}.erb
+# this allows files which are common to all enviros to
+# come from a single source while allowing specific
+# ones to be over-ridden
+# if the target file name is the same as the source then
+# the second parameter can be left out
+def smart_template(from, to=nil)
+  to ||= from
+  full_to_path = "#{shared_path}/config/#{to}"
+  if from_erb_path = template_file(from)
+    from_erb = StringIO.new(ERB.new(File.read(from_erb_path)).result(binding))
+    upload! from_erb, full_to_path
+    info "copying: #{from_erb} to: #{full_to_path}"
+  else
+    error "error #{from} not found"
+  end
+end
+
+def template_file(name)
+  if File.exist?((file = "config/deploy/#{fetch(:full_app_name)}/#{name}.erb"))
+    return file
+  elsif File.exist?((file = "config/deploy/shared/#{name}.erb"))
+    return file
+  end
+  return nil
+end