From cc67272cba35e50afa73cfec856c1677b204ae7e Mon Sep 17 00:00:00 2001
From: Joshua Peek <josh@joshpeek.com>
Date: Sat, 22 Nov 2008 14:33:00 -0600
Subject: Vendor rack 0.4.0

---
 .../vendor/rack-0.4.0/rack/recursive.rb            | 57 ++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 actionpack/lib/action_controller/vendor/rack-0.4.0/rack/recursive.rb

(limited to 'actionpack/lib/action_controller/vendor/rack-0.4.0/rack/recursive.rb')

diff --git a/actionpack/lib/action_controller/vendor/rack-0.4.0/rack/recursive.rb b/actionpack/lib/action_controller/vendor/rack-0.4.0/rack/recursive.rb
new file mode 100644
index 0000000000..bf8b965925
--- /dev/null
+++ b/actionpack/lib/action_controller/vendor/rack-0.4.0/rack/recursive.rb
@@ -0,0 +1,57 @@
+require 'uri'
+
+module Rack
+  # Rack::ForwardRequest gets caught by Rack::Recursive and redirects
+  # the current request to the app at +url+.
+  #
+  #   raise ForwardRequest.new("/not-found")
+  #
+
+  class ForwardRequest < Exception
+    attr_reader :url, :env
+
+    def initialize(url, env={})
+      @url = URI(url)
+      @env = env
+
+      @env["PATH_INFO"] =       @url.path
+      @env["QUERY_STRING"] =    @url.query  if @url.query
+      @env["HTTP_HOST"] =       @url.host   if @url.host
+      @env["HTTP_PORT"] =       @url.port   if @url.port
+      @env["rack.url_scheme"] = @url.scheme if @url.scheme
+
+      super "forwarding to #{url}"
+    end
+  end
+
+  # Rack::Recursive allows applications called down the chain to
+  # include data from other applications (by using
+  # <tt>rack['rack.recursive.include'][...]</tt> or raise a
+  # ForwardRequest to redirect internally.
+
+  class Recursive
+    def initialize(app)
+      @app = app
+    end
+
+    def call(env)
+      @script_name = env["SCRIPT_NAME"]
+      @app.call(env.merge('rack.recursive.include' => method(:include)))
+    rescue ForwardRequest => req
+      call(env.merge(req.env))
+    end
+
+    def include(env, path)
+      unless path.index(@script_name) == 0 && (path[@script_name.size] == ?/ ||
+                                               path[@script_name.size].nil?)
+        raise ArgumentError, "can only include below #{@script_name}, not #{path}"
+      end
+
+      env = env.merge("PATH_INFO" => path, "SCRIPT_NAME" => @script_name,
+                      "REQUEST_METHOD" => "GET",
+                      "CONTENT_LENGTH" => "0", "CONTENT_TYPE" => "",
+                      "rack.input" => StringIO.new(""))
+      @app.call(env)
+    end
+  end
+end
-- 
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