Class: Utopia::Content

Inherits:
Object
  • Object
show all
Defined in:
lib/utopia/content.rb,
lib/utopia/content/tag.rb,
lib/utopia/content/link.rb,
lib/utopia/content/node.rb,
lib/utopia/content/links.rb,
lib/utopia/content/processor.rb,
lib/utopia/content/transaction.rb

Defined Under Namespace

Classes: Link, Links, Node, Processor, Tag, Transaction, UnbalancedTagError

Constant Summary collapse

INDEX = 
'index'.freeze
XNODE_EXTENSION = 
'.xnode'.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app, **options) ⇒ Content

Returns a new instance of Content.



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# File 'lib/utopia/content.rb', line 35

def initialize(app, **options)
  @app = app
  
  @root = File.expand_path(options[:root] || Utopia::default_root)
  
  if options[:cache_templates]
    @templates = Concurrent::Map.new
  end
  
  @tags = options.fetch(:tags, {})
  
  self.freeze
end

Instance Attribute Details

#root ⇒ Object (readonly)

Returns the value of attribute root.



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# File 'lib/utopia/content.rb', line 56

def root
  @root
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/utopia/content.rb', line 119

def call(env)
  request = Rack::Request.new(env)
  path = Path.create(request.path_info)
  
  # Check if the request is to a non-specific index. This only works for requests with a given name:
  basename = path.basename
  directory_path = File.join(@root, path.dirname.components, basename.name)

  # If the request for /foo/bar{extensions} is actually a directory, rewrite it to /foo/bar/index{extensions}:
  if File.directory? directory_path
    index_path = [basename.name, basename.rename(INDEX)]
    
    return [307, {HTTP::LOCATION => path.dirname.join(index_path).to_s}, []]
  end

  locale = env[Localization::CURRENT_LOCALE_KEY]
  if link = Links.for(@root, path, locale)
    if link.path and node = lookup_node(link.path)
      response = Rack::Response.new
      
      attributes = request.env.fetch(VARIABLES_KEY, {}).to_hash
      
      node.process!(request, response, attributes)
      
      return response.finish
    elsif redirect_uri = link[:uri]
      return [307, {HTTP::LOCATION => redirect_uri}, []]
    end
  end
  
  return @app.call(env)
end

#fetch_xml(path) ⇒ Object 



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# File 'lib/utopia/content.rb', line 58

def fetch_xml(path)
  if @templates
    @templates.fetch_or_store(path.to_s) do
      Trenni::Template.load(path)
    end
  else
    Trenni::Template.load(path)
  end
end

#freeze ⇒ Object 



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# File 'lib/utopia/content.rb', line 49

def freeze
  @root.freeze
  @tags.freeze
  
  super
end

#lookup_node(request_path) ⇒ Object

The request_path is an absolute uri path, e.g. /foo/bar. If an xnode file exists on disk for this exact path, it is instantiated, otherwise nil.



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# File 'lib/utopia/content.rb', line 106

def lookup_node(request_path)
  name = request_path.last
  name_xnode = name.to_s + XNODE_EXTENSION

  node_path = File.join(@root, request_path.dirname.components, name_xnode)

  if File.exist? node_path
    return Node.new(self, request_path.dirname + name, request_path, node_path)
  end

  return nil
end

#lookup_tag(name, parent_path) ⇒ Object

Look up a named tag such as <entry />



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# File 'lib/utopia/content.rb', line 69

def lookup_tag(name, parent_path)
  if @tags.key? name
    return @tags[name]
  end
  
  if String === name && name.index('/')
    name = Path.create(name)
  end
  
  if Path === name
    name = parent_path + name
    name_path = name.components.dup
    name_path[-1] += XNODE_EXTENSION
  else
    name_path = name + XNODE_EXTENSION
  end

  parent_path.ascend do |dir|
    tag_path = File.join(root, dir.components, name_path)

    if File.exist? tag_path
      return Node.new(self, dir + name, parent_path + name, tag_path)
    end

    if String === name_path
      tag_path = File.join(root, dir.components, '_' + name_path)

      if File.exist? tag_path
        return Node.new(self, dir + name, parent_path + name, tag_path)
      end
    end
  end
  
  return nil
end