Add loader for environment variables

glass-dev-1.rockspec

@@ -16,6 +16,7 @@ build = {
       glass = "glass.lua",
       ["glass.cosmo"] = "glass/cosmo.lua",
       ["glass.discount"] = "glass/discount.lua",
+      ["glass.environment"] = "glass/environment.lua",
       ["glass.json"] = "glass/json.lua",
       ["glass.lua"] = "glass/lua.lua",
       ["glass.moonhtml"] = "glass/moonhtml.lua",

glass/environment.lua

@@ -0,0 +1,8 @@
+--- Loader for environment variables
+-- @module glass.environment
+
+--- Loads values from environment variables
+-- @treturn string The value of the environment variable
+return function(name)
+	return os.getenv(name:match("[^/].+$"))
+end