* lib/net/http.rb: adding support to rfc5789 patch verb.

  Added a Net::HTTP::Patch class which expects a message body
  and response body. It recycles the post method into a patch one,
  that will send the encoded representation to the server.
  Summarizing, a new class has been created, the post method
  extracted into send_entity, including a new argument,
  which defines which class to use (Post or Patch) and
  finally a patch method was created. [ruby-core:30426]
  Patched by Guilherme Silveira
  <guilherme.silveira AT caelum.com.br>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28119 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 32 insertions, 10 deletions

diff --git a/lib/net/http.rb b/lib/net/http.rb
index f39451591f..920301f350 100644
--- a/lib/net/http.rb
+++ b/lib/net/http.rb
@@ -966,16 +966,13 @@ module Net   #:nodoc:
     # "application/x-www-form-urlencoded" by default.
     #
     def post(path, data, initheader = nil, dest = nil, &block) # :yield: +body_segment+
-      res = nil
-      request(Post.new(path, initheader), data) {|r|
-        r.read_body dest, &block
-        res = r
-      }
-      unless @newimpl
-        res.value
-        return res, res.body
-      end
-      res
+      send_entity(path, data, initheader, dest, Post, &block)
+    end
+
+    # Sends a PATCH request to the +path+ and gets a response,
+    # as an HTTPResponse object.
+    def patch(path, data, initheader = nil, dest = nil, &block) # :yield: +body_segment+
+      send_entity(path, data, initheader, dest, Patch, &block)
     end
 
     def put(path, data, initheader = nil)   #:nodoc:
@@ -1176,6 +1173,21 @@ module Net   #:nodoc:
 
     private
 
+    # Executes a request which uses a representation
+    # and returns its body.
+    def send_entity(path, data, initheader, dest, type, &block)
+      res = nil
+      request(type.new(path, initheader), data) {|r|
+        r.read_body dest, &block
+        res = r
+      }
+      unless @newimpl
+        res.value
+        return res, res.body
+      end
+      res
+    end
+
     def transport_request(req)
       begin_transport req
       req.exec @socket, @curr_http_version, edit_path(req.path)
@@ -1832,6 +1844,16 @@ module Net   #:nodoc:
     end
 
     #
+    # PATCH method --- RFC5789
+    #
+
+    class Patch < HTTPRequest
+      METHOD = 'PATCH'
+      REQUEST_HAS_BODY = true
+      RESPONSE_HAS_BODY = true
+    end
+
+    #
     # WebDAV methods --- RFC2518
     #