Class: Matryoshka::Document::Html

Inherits:
Object
  • Object
show all
Defined in:
lib/matryoshka/document/html.rb

Defined Under Namespace

Classes: Merge

Constant Summary collapse

EXTERNAL_SEARCH_PATTERN = 
'[@rel="external"]'
PROXY_SEARCH_PATTERN = 
'[@rel="proxy"]'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(rack_array) ⇒ Html

Returns a new instance of Html.



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# File 'lib/matryoshka/document/html.rb', line 124

def initialize(rack_array)
  self.status  = rack_array[0]
  self.headers = rack_array[1]
  
  html = rack_array[2]
  if html.respond_to?(:to_html)
    self.content = html
  else
    self.body = html
  end
  load_externals unless externals_loaded?
end

Instance Attribute Details

#body ⇒ Object

Returns the value of attribute body.



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# File 'lib/matryoshka/document/html.rb', line 6

def body
  @body
end

#content ⇒ Object

Returns the value of attribute content.



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# File 'lib/matryoshka/document/html.rb', line 6

def content
  @content
end

#headers ⇒ Object

this needs to update headers like ‘Content-Length’ and remove Matryoshka-specific ones Might need to make this cleaned_headers or something



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# File 'lib/matryoshka/document/html.rb', line 159

def headers
  @headers
end

#path ⇒ Object

Returns the value of attribute path.



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# File 'lib/matryoshka/document/html.rb', line 6

def path
  @path
end

#status ⇒ Object

Returns the value of attribute status.



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# File 'lib/matryoshka/document/html.rb', line 6

def status
  @status
end

Class Method Details

.accepts ⇒ Object 



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# File 'lib/matryoshka/document/html.rb', line 149

def self.accepts
  ['text/html']
end

.extentions ⇒ Object 



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# File 'lib/matryoshka/document/html.rb', line 145

def self.extentions
  ['.html','.htm']
end

Instance Method Details



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# File 'lib/matryoshka/document/html.rb', line 117

def absolute_link(elem,attribute,base_dir)
  relative_uri = elem.attributes[attribute]
  unless (relative_uri.include?(base_dir) or is_absolute?(relative_uri))
    elem.set_attribute(attribute, (base_dir + relative_uri))
  end    
end

#call(env) ⇒ Object 



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# File 'lib/matryoshka/document/html.rb', line 166

def call(env)
  # content = IO.read Matryoshka::ROOT_DIR + '/public/index.html'
  [status, headers, body]
end

#closest_directory(path) ⇒ Object 



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# File 'lib/matryoshka/document/html.rb', line 53

def closest_directory(path)
  path[/\A.+\//]
end

#convert_proxy_links(proxy_base) ⇒ Object 



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# File 'lib/matryoshka/document/html.rb', line 57

def convert_proxy_links(proxy_base)
  (content/'a').each do |link|
    href = link.attributes['href']
          
    # Remove base of urls that we are proxying.
    href.sub!(/\A#{proxy_base}/,'')
    
    # Except for absolute links, add template path to complete relative urls
    unless true #is_absolute?(href)
      if href[/\A\//] # link begins with /
        href = '?'
      else
        href = closest_directory(@headers[:template_path]) + href
      end
      link.set_attribute('href', href)
    end
    
    case href
      when /\A#{proxy_base}/
        href.sub!(/#{proxy_base}/,'').sub!(/\A\//,'')
      when /\A#{URI.parse(proxy_base).path}/
        href.sub!(/#{URI.parse(proxy_base).path}/,'').sub!(/\A\//,'')
    end
    
    unless is_absolute?(href)
      href = closest_directory(@headers[:template_path]) + href
    end
    
    link.set_attribute('href', href)
  end
end

#externals_loaded? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/matryoshka/document/html.rb', line 8

def externals_loaded?
  @externals_loaded
end

#is_absolute?(uri) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/matryoshka/document/html.rb', line 113

def is_absolute?(uri)
  uri[/\Ahttp:\/\//]
end

#load_externals ⇒ Object 



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# File 'lib/matryoshka/document/html.rb', line 90

def load_externals
  (content/EXTERNAL_SEARCH_PATTERN).each do |element|
    external = self.class.new(Matryoshka::External.find(element[:href]))
    external.make_links_absolute(element[:href])
    if external.status == 200
      Merge.new(element,external.content,Merge::EXTERNAL_MERGE).run
      # Cleanup external code
      element.remove_attribute(:href)
      element.remove_attribute(:rel)
    end
  end
  @externals_loaded = true
end

#make_links_absolute(base_url, replace_pairs = {'a'=>'href', 'img'=>'src'}) ⇒ Object 



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# File 'lib/matryoshka/document/html.rb', line 104

def make_links_absolute(base_url, replace_pairs = {'a'=>'href', 'img'=>'src'})
  base_dir = base_url[/\A.+\//]
  replace_pairs.each_pair do |search_pattern, attribute|
    (content/search_pattern).each do |link|
      absolute_link link, attribute, base_dir
    end
  end
end

#prepare_proxy(full_request_path = '') ⇒ Object 



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# File 'lib/matryoshka/document/html.rb', line 23

def prepare_proxy(full_request_path = '')
  element = content.at PROXY_SEARCH_PATTERN
  proxy_link = if full_request_path == @headers[:template_path]
    element[:href]
  else
    closest_directory(element[:href]) +
      full_request_path.sub(/\A#{closest_directory(@headers[:template_path])}/,'')
  end
  
  # Need to prime external with template_path
  external = self.class.new(Matryoshka::External.find(proxy_link, {:template_path => @headers[:template_path]}))
  # external.make_links_absolute(element[:href])
  base_dir = closest_directory(element[:href])
  
  # if doc is not a full (<html><head> ...) don't bother with transform? 
  
  # merge the external with a copy of the element
  # convoluted copy element (.dup is weird with Hpricot)
  element_copy = Hpricot(element.to_html).at '*'
  external.content = Merge.new(element_copy,external.content,Merge::EXTERNAL_MERGE).run
  external.convert_proxy_links(base_dir)
  external.make_links_absolute(base_dir,{'img'=>'src'})
  
  # Tag the element and the proxy doc so that they cleanly merge.
  # This is to keep the pattern established in answer.rb
  element.set_attribute('id', 'matryoshka_proxy_target')
  external.content.set_attribute('id','matryoshka_proxy_target')
  external
end

#proxy? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/matryoshka/document/html.rb', line 19

def proxy?
  content.at PROXY_SEARCH_PATTERN
end

#proxy_loaded? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/matryoshka/document/html.rb', line 12

def proxy_loaded?
  @proxy_loaded
end