Add support for symbolic (named) versions

Closes #10

lib/package.ex

@@ -83,7 +83,19 @@ defrecord Expm.Package,
     Expm.Repository.put repo, package
   end
 
+  def fetch(repo, package) do
+    case Enum.reverse(List.sort(versions repo, package)) do
+     [] -> :not_found
+     [top|_] -> fetch(repo, package, top)
+    end
+  end
+
   def fetch(repo, package, version) do
+    if is_binary(version) and 
+       Regex.match?(%r/^[a-z]+.*/i,version) do # symbolic name
+      version = binary_to_atom(version) ## FIXME?
+    end
+
     Expm.Repository.get repo, package, version
   end
 

lib/server.ex

@@ -112,19 +112,16 @@ defmodule Expm.Server.Http do
 
   def to_html(req, State[endpoint: :package, repository: repository] = state) do
     {package, req} = Req.binding(:package, req)  
-    case Enum.reverse(List.sort(Expm.Repository.versions repository, package)) do 
-      [] -> pkg = "ERROR: No such package"
-      [version|_] -> 
-            pkg = Expm.Repository.get repository, package, version
-    end
+    pkg = Expm.Package.fetch repository, package
+    if pkg == :not_found, do: pkg = "ERROR: No such package"    
     out = render_page(Expm.Server.Templates.package(pkg, repository), req, state)
     {out, req, state}
   end
 
   def to_html(req, State[endpoint: :package_version, repository: repository] = state) do
     {package, req} = Req.binding(:package, req)  
     {version, req} = Req.binding(:version, req)    
-    pkg = Expm.Repository.get repository, package, version
+    pkg = Expm.Package.fetch repository, package, version
     if pkg == :not_found, do: pkg = "ERROR: No such package"
     out = render_page(Expm.Server.Templates.package(pkg, repository), req, state)
     {out, req, state}

package.head.exs

@@ -0,0 +1,4 @@
+Expm.Package.new(name: "expm", description: "Elixir package manager",
+                 version: :head, keywords: ["Elixir","Erlang","package","library","dependency","dependencies"], 
+                 maintainers: [[name: "Yurii Rashkovskii", email: "yrashk@gmail.com"]],
+                 repositories: [[github: "yrashk/expm"]])