このサイトのソース

ちょっとした解説

Web から楽にサイトを更新したいというよくあるアレ。

ただの Wiki 形式だと出力できるのが固定に layout された html だけなので、いろいろやっています。

まず何も考えずにページを新規作成すると Markdown として扱われます。

ページの行頭に title ほげふが と入れておくとページタイトルがほげふがになります。

頭に haml *title と入れておくと、 haml としてレンダリングされます。自由なレイアウトのページも Web 上から更新することが出来ます。 haml 内で Ruby のコードを記述することも出来、とても幸せになれます。

頭に builder *title と入れておくと、 builder テンプレートとしてレンダリングされます。 RSS など XML を吐きたい時に便利。 Ruby を書けるので幸せになれます。

頭に raw でいれたものをそのまま吐きます。 js をアップロードしたり貼ったりしたい時に便利。

頭に ruby で ruby のコードとして評価した結果を返す。何かに使えて便利。

以下のソースを読めば分かると思いますが、 /source/app.rb にソースがある場合はそれを使います。ソースすらサイトから更新出来るようにした。

app.rb

require 'sinatra'
require 'active_record'
require 'haml'
require 'redcarpet'
require 'cgi'
require 'rack/csrf'
require 'logger'
require 'builder'
require 'digest/md5'

BlueCloth = Redcarpet

PASSWORD = "06f5f62397164780d969e64f0bbd057f"

#ActiveRecord::Base.establish_connection(
#  :adapter => 'sqlite3',
#  :database => 'production.sqlite3'
#)

ActiveRecord::Base.establish_connection({
      adapter: "mysql2",
      encoding: "utf8",
      host: "mysql.ssig33.com",
      port: 3306,
      database: 'site',
      username: 'root',
      password: 'kwgw78'
})

ActiveRecord::Base.logger = Logger.new("./database.log")

ActiveRecord::Migrator.migrate("migrate/", nil)

class Page < ActiveRecord::Base
end

begin
  code = Page.where(:name => "source/app.rb").order("created_at desc").first
  ary = code.body.split("\n")
  ary.shift
  eval ary.join("\n")
rescue StandardError, LoadError
  class Page < ActiveRecord::Base
    def html request
      if self.body.split("\n").first =~ /^haml/
        return self.haml request
      elsif self.body.split("\n").first =~ /^ruby/
        return "
#{self.body}
"
      elsif self.body.split("\n").first =~ /^builder/ or self.body.split("\n").first =~ /^raw/ 
        return "
#{self.body}
"
      elsif self.body.split("\n").first =~ /^title/
        str = ""
        ary = self.body.split("\n")
        str = ""
        ary.shift
        str = ary.join("\n")
      else
        str = self.body
      end
      html = BlueCloth.new(str, :fenced_code, :gh_blockcode).to_html rescue "
#{self.body}
"
      html
    end

    def title
      if self.body.split("\n").first =~ /title/
        str = self.body.split("\n").shift.split("title\ ").last
      elsif self.body.split("\n").first =~ /haml/
        str = self.body.split("\n").shift.split("haml\ ").last
      elsif self.body.split("\n").first =~ /builder/
        str = self.body.split("\n").shift.split("builder\ ").last
      elsif self.body.split("\n").first =~ /ruby/
        str = self.body.split("\n").shift.split("ruby\ ").last
      else
        str = self.name
      end
      str.chomp!
      str = self.name if str == nil or str == "" or str == "haml"
      str.gsub(/=created_at=/, self.created_at.getutc.to_s)
    end

    def raw
      ary = self.body.split("\n")
      ary.shift
      ary.join("\n")
    end
    
    def haml request
      ary = self.body.split("\n")
      str = ""
      ary.shift
      str = ary.join("\n")
      Haml::Engine.new(str).render
    end

    def ruby request
      ary = self.body.split("\n")
      str = ""
      ary.shift
      str = ary.join("\n")
      eval str
    end

    def builder request
      ary = self.body.split("\n")
      str = ""
      ary.shift
      str = ary.join("\n")
      xml = ::Builder::XmlMarkup.new(:indent => 2)
      eval str
    end

    def layout
      ary = self.body.split("\n")
      ary.shift
      ary.join("\n")
    end
  end

  configure do
    set :logging, false
    set :app_file, __FILE__
    use Rack::Session::Cookie, :secret => 'fsdjkfhsjkhr23f8fhsdjkvhnsdjhrfuiscflaaadn8or'
    use Rack::Csrf, :raise => true
  end

  get '/' do
    @page = Page.where(:name => "index").order("created_at desc").first
    redirect '/edit/index' unless @page
    if layout = Page.where(:name => "layout").order("created_at desc").first
      return haml layout.layout
    else
      return haml :page
    end
  end

  get %r{/edit/(.*)} do
    @id = params[:captures].first.to_s
    @page = Page.where(:name => @id).order("created_at desc").first
    @page = Page.new if @page == nil
    haml :edit
  end

  get %r{/(.*)} do
    id = params[:captures].first.to_s
    id.chop! if id.reverse[0] == "/"
    file = open("public/#{id}/index.html").read rescue nil
    return file if file
    @page = Page.where(:name => id).order("created_at desc").first
    redirect "/edit/#{id}" unless @page
    return @page.haml(request) if @page.body.split("\n").first =~ /^haml/ 
    return @page.raw if @page.body.split("\n").first =~ /^raw/ or @page.body.split("\n").first =~ /^layout/
    if @page.body.split("\n").first =~ /^builder/
      content_type  :xml
      return @page.builder(request)
    end
    return @page.ruby(request) if @page.body.split("\n").first =~ /^ruby/
    if layout = Page.where(:name => "layout").order("created_at desc").first
      return haml layout.layout
    else
      return haml :page
    end
  end

  post '/update' do
    if Digest::MD5.hexdigest(params[:password]).to_s != PASSWORD
      return "ERROR"
    else
      page = Page.new
      page.name = params[:id]
      page.body = params[:body]
      page.save
      redirect "/#{params[:id]}"
    end
  end
  
  post '/usr2' do
    raise if Digest::MD5.hexdigest(params[:password]).to_s != PASSWORD
    system "rm site.pid.oldbin"
    system "kill -USR2 `cat site.pid`"
    system "kill -INT `cat site.pid.oldbin`"
    redirect "/"
  end


  post %r{/(.*)} do
    id = params[:captures].first.to_s
    id.chop! if id.reverse[0] == "/"
    file = open("public/#{id}/index.html").read rescue nil
    return file if file
    @page = Page.where(:name => id).order("created_at desc").first
    redirect "/edit/#{id}" unless @page
    return @page.haml(request) if @page.body.split("\n").first =~ /^haml/ 
    return @page.raw if @page.body.split("\n").first =~ /^raw/ or @page.body.split("\n").first =~ /^layout/
    if @page.body.split("\n").first =~ /^builder/
      content_type  :xml
      return @page.builder(request)
    end
    return @page.ruby(request) if @page.body.split("\n").first =~ /^ruby/
    if layout = Page.where(:name => "layout").order("created_at desc").first
      return haml layout.layout
    else
      return haml :page
    end
  end


  post '/destroy' do
    raise if Digest::MD5.hexdigest(params[:password]).to_s != PASSWORD
    Page.where(:name => params[:id]).delete_all
    redirect "/"
  end

  error do
    "error... #{env['sinatra.error']}"
  end

  helpers do
    def h str
      CGI.escapeHTML str.to_s
    end

    def title
      if request.path_info == "/" or request.path_info == "/index"
        return "ssig33.com"
      else
        return "ssig33.com - #{@page.title}"
      end
    end
  end
end

__END__
@@ page

%meta{:charset => "UTF-8"}
%title=h title
%link{:href => "http://ssig33.com/common.css", :media => "screen", :rel => "stylesheet", :type => "text/css"}
%link{:href => "http://ssig33.com/sh_style.css", :media => "screen", :rel => "stylesheet", :type => "text/css"}
%meta{:name => "viewport", :content => "width=320, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"}
%link{:href => '/feed', :rel => 'alternate', :title => 'feed', :type => "application/rss+xml"}
%script{:src => "/sh_main.min.js"}
%script{:src => "/sh_ext.js"}
%script{:src => "/jquery-1.6.1.min.js"}
%div#all~@page.html(request)
  :javascript
    $.each($("pre code"), function(){
      var code = $(this);
      var text = code.text();
      var pre = $(code.parent());
      code.remove();
      pre.text(text);
      var lang = pre.attr("lang");
      if(lang != undefined){
        pre.addClass("sh_"+lang);
      }
    })
    sh_highlightDocument();

@@ edit

%meta{:charset => "UTF-8"}
%title=h "Edit - #{params[:captures].first.to_s}"
%link{:href => "http://ssig33.com/common.css", :media => "screen", :rel => "stylesheet", :type => "text/css"}
%meta{:name => "viewport", :content => "width=320, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"}
%div#all
  %form{:action => "/update", :method => "post"}
    =Rack::Csrf.csrf_tag(env)
    %input{:id => "id", :name => "id", :type => "hidden", :value => "#{@id}"}
    %p
      %textarea{:cols => "80", :id => "bodY", :name => "body", :rows => "30"}=@page.body #rescue ""
    %p
      %input{:id => "password", :name => "password", :type => "password"}
    %p
      %input{:name => "commit", :type => "submit", :value => "Save changes"}
  %form{:action => "/destroy", :method => "post"}
    =Rack::Csrf.csrf_tag(env)
    %input{:id => "id", :name => "id", :type => "hidden", :value => "#{@id}"}
    %p
      %input{:id => "password", :name => "password", :type => "password"}
    %p
      %input{:name => "commit", :type => "submit", :value => "Destroy"}
  %form{:action => "/usr2", :method => "post"}
    =Rack::Csrf.csrf_tag(env)
    %input{:id => "id", :name => "id", :type => "hidden", :value => "#{@id}"}
    %p
      %input{:id => "password", :name => "password", :type => "password"}
    %p
      %input{:name => "commit", :type => "submit", :value => "Destroy"}
  %form{:action => "/usr2", :method => "post"}
    =Rack::Csrf.csrf_tag(env)
    %input{:id => "id", :name => "id", :type => "hidden", :value => "#{@id}"}
    %p
      %input{:id => "password", :name => "password", :type => "password"}
    %p
      %input{:name => "commit", :type => "submit", :value => "USR2"}

migrate/0_create_pages.rb

class CreatePages < ActiveRecord::Migration
  def self.up
    create_table :pages do |t|
      t.string :name
      t.text :body
      t.timestamps
    end
    add_index :pages, [:name, :created_at]
    add_index :pages, :name
  end

  def self.down
    drop_table :pages
  end
end