From 7afabe4b672fbf0b0a9743f7cb28025c351374fe Mon Sep 17 00:00:00 2001
From: Satoshi Amemiya <amemiya@protonmail.com>
Date: Sat, 26 Sep 2015 00:07:56 +0900
Subject: [PATCH] Impl Rack app

---
 LICENSE           | 25 ++++++++++++++++++++++
 README.md         | 54 +++++++++++++++++++++++++++++++++++++++++++++++
 mrbgem.rake       |  7 ++++++
 mrblib/rack_r3.rb | 53 ++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 139 insertions(+)
 create mode 100644 LICENSE
 create mode 100644 README.md
 create mode 100644 mrbgem.rake
 create mode 100644 mrblib/rack_r3.rb

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..253b1e5
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,25 @@
+mruby-r3
+
+Copyright (c) AMEMIYA Satoshi 2015
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+[ MIT license: http://www.opensource.org/licenses/mit-license.php ]
+
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..e429eeb
--- /dev/null
+++ b/README.md
@@ -0,0 +1,54 @@
+# mruby-r3
+R3 router binding
+
+## install by mrbgems
+
+- add conf.gem line to `build_config.rb`
+
+```ruby
+MRuby::Build.new do |conf|
+    conf.gem :github => 'rail44/mruby-rack-r3'
+end
+```
+
+## example
+
+```ruby
+class App
+  include Rack::R3
+  get "/hoge/{id}" do |id|
+    [200,
+     {'content-type' => 'text/plain; charset=utf-8'},
+     ["your id is #{id}"]
+    ];
+  end
+
+  post "/hoge/{id}/{message}" do |id, message|
+    [200,
+     {'content-type' => 'text/plain; charset=utf-8'},
+     ["post message '#{message}' for #{id}"]
+    ];
+  end
+
+  get "/fuga" do
+    [200,
+     {'content-type' => 'text/plain; charset=utf-8'},
+     ["Fuga World!"]
+    ];
+  end
+end
+
+app = App.new
+p app.call({'REQUEST_METHOD' => 'GET', 'PATH_INFO' => '/hoge/123'})
+# => [200, {"content-type"=>"text/plain; charset=utf-8"}, ["your id is 123"]]
+p app.call({'REQUEST_METHOD' => 'POST', 'PATH_INFO' => '/hoge/123/wiwi'})
+# => [200, {"content-type"=>"text/plain; charset=utf-8"}, ["post message 'wiwi' for 123"]]
+p app.call({'REQUEST_METHOD' => 'GET', 'PATH_INFO' => '/fuga'})
+# => [200, {"content-type"=>"text/plain; charset=utf-8"}, ["Fuga World!"]]
+p app.call({'REQUEST_METHOD' => 'GET', 'PATH_INFO' => '/notfound'})
+# => [404, {"content-type"=>"text/plain; charset=utf-8"}, ["Not Found"]]
+```
+
+## License
+under the MIT License:
+- see LICENSE file
diff --git a/mrbgem.rake b/mrbgem.rake
new file mode 100644
index 0000000..fc78412
--- /dev/null
+++ b/mrbgem.rake
@@ -0,0 +1,7 @@
+MRuby::Gem::Specification.new('mruby-rack-r3') do |spec|
+  spec.license = 'MIT'
+  spec.authors = 'AMEMIYA Satoshi'
+  spec.summary = 'Rack app with R3 router'
+
+  spec.add_dependency "mruby-r3", git: 'git://github.com/rail44/mruby-r3.git'
+end
diff --git a/mrblib/rack_r3.rb b/mrblib/rack_r3.rb
new file mode 100644
index 0000000..ec22c4b
--- /dev/null
+++ b/mrblib/rack_r3.rb
@@ -0,0 +1,53 @@
+module Rack
+  module R3
+    METHODS = {
+      get: ::R3::Method::GET,
+      post: ::R3::Method::POST,
+      put: ::R3::Method::PUT,
+      delete: ::R3::Method::DELETE,
+      patch: ::R3::Method::PATCH,
+      head: ::R3::Method::HEAD,
+      options: ::R3::Method::OPTIONS,
+    }
+
+    def self.included(base)
+      base.class_eval do
+        @@routes = []
+
+        def self.routes
+          @@routes
+        end
+
+        METHODS.each do |sym, int|
+          self.define_singleton_method(sym) do |path, &block|
+            @@routes.push({method: int, path: path, block: block})
+          end
+        end
+      end
+    end
+
+    def initialize
+      routes = self.class.routes
+      @tree = ::R3::Tree.new(routes.length)
+      routes.each do |route|
+        @tree.insert_route(route[:method], route[:path], route[:block])
+      end
+      @tree.compile
+    end
+
+    def call(env)
+      method = METHODS[env['REQUEST_METHOD'].downcase.to_sym]
+      match = @tree.match(method, env['PATH_INFO'])
+      block = match[:data]
+      return block.call(*match[:params]) if block
+      not_found(env)
+    end
+
+    def not_found(env)
+      [404,
+       {'content-type' => 'text/plain; charset=utf-8'},
+       ["Not Found"]
+      ];
+    end
+  end
+end