Add name to RDF.Serialization formats

CHANGELOG.md

@@ -5,6 +5,17 @@ This project adheres to [Semantic Versioning](http://semver.org/) and
 [Keep a CHANGELOG](http://keepachangelog.com).
 
 
+## Unreleased
+
+### Added
+
+- `RDF.Serialization`s define an atom name
+
+
+[Compare v0.3.1...HEAD](https://github.com/marcelotto/rdf-ex/compare/v0.3.1...HEAD)
+
+
+
 ## 0.3.1 - 2018-01-19
 
 ### Added

lib/rdf/serialization.ex

@@ -31,6 +31,11 @@ defmodule RDF.Serialization do
   """
   @callback id :: RDF.IRI.t
 
+  @doc """
+  An name atom of the serialization format.
+  """
+  @callback name :: atom
+
   @doc """
   The usual file extension for the serialization format.
   """
@@ -99,6 +104,10 @@ defmodule RDF.Serialization do
           Module.get_attribute(__MODULE__, :id) do
         def id, do: @id
       end
+      if !Module.defines?(__MODULE__, {:name, 0}) &&
+          Module.get_attribute(__MODULE__, :name) do
+        def name, do: @name
+      end
       if !Module.defines?(__MODULE__, {:extension, 0}) &&
           Module.get_attribute(__MODULE__, :extension) do
         def extension, do: @extension

lib/rdf/serializations/nquads.ex

@@ -18,6 +18,7 @@ defmodule RDF.NQuads do
   import RDF.Sigils
 
   @id           ~I<http://www.w3.org/ns/formats/N-Quads>
+  @name         :nquads
   @extension    "nq"
   @content_type "application/n-quads"
 

lib/rdf/serializations/ntriples.ex

@@ -20,6 +20,7 @@ defmodule RDF.NTriples do
   import RDF.Sigils
 
   @id           ~I<http://www.w3.org/ns/formats/N-Triples>
+  @name         :ntriples
   @extension    "nt"
   @content_type "application/n-triples"
 

lib/rdf/serializations/turtle.ex

@@ -11,6 +11,7 @@ defmodule RDF.Turtle do
   import RDF.Sigils
 
   @id           ~I<http://www.w3.org/ns/formats/Turtle>
+  @name         :turtle
   @extension    "ttl"
   @content_type "text/turtle"