Class: Caracal::Core::Models::IFrameModel

Inherits:
BaseModel
  • Object
show all
Defined in:
lib/caracal/core/models/iframe_model.rb

Overview

This class handles block options passed to the img method.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}, &block) ⇒ IFrameModel

initialization



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# File 'lib/caracal/core/models/iframe_model.rb', line 23

def initialize(options={}, &block)
  super options, &block
end

Instance Attribute Details

#iframe_data ⇒ Object (readonly)

Returns the value of attribute iframe_data.



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# File 'lib/caracal/core/models/iframe_model.rb', line 17

def iframe_data
  @iframe_data
end

#iframe_ignorables ⇒ Object (readonly)

Returns the value of attribute iframe_ignorables.



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# File 'lib/caracal/core/models/iframe_model.rb', line 18

def iframe_ignorables
  @iframe_ignorables
end

#iframe_namespaces ⇒ Object (readonly)

Returns the value of attribute iframe_namespaces.



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# File 'lib/caracal/core/models/iframe_model.rb', line 19

def iframe_namespaces
  @iframe_namespaces
end

#iframe_relationships ⇒ Object (readonly)

Returns the value of attribute iframe_relationships.



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# File 'lib/caracal/core/models/iframe_model.rb', line 20

def iframe_relationships
  @iframe_relationships
end

#iframe_url ⇒ Object (readonly)

accessors



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# File 'lib/caracal/core/models/iframe_model.rb', line 16

def iframe_url
  @iframe_url
end

Instance Method Details

#file ⇒ Object

GETTERS ==========================


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# File 'lib/caracal/core/models/iframe_model.rb', line 89

def file
  @file ||= begin
    if iframe_url.nil?
      file = Tempfile.new('iframe')
      file.write iframe_data
      file.rewind
    else
      file = open(iframe_url)
    end
    file
  end
end

#ignorables ⇒ Object 



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# File 'lib/caracal/core/models/iframe_model.rb', line 102

def ignorables
  @iframe_ignorables || []
end

#namespaces ⇒ Object 



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# File 'lib/caracal/core/models/iframe_model.rb', line 106

def namespaces
  @iframe_namespaces || {}
end

#preprocess! ⇒ Object

PROCESSING =======================


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# File 'lib/caracal/core/models/iframe_model.rb', line 34

def preprocess!
  ::Zip::File.open(file) do |zip|
    # locate relationships xml
    entry      = zip.glob('word/_rels/document.xml.rels').first
    content    = entry.get_input_stream.read
    rel_xml    = Nokogiri::XML(content)

    # locate document xml
    entry      = zip.glob('word/document.xml').first
    content    = entry.get_input_stream.read
    doc_xml    = Nokogiri::XML(content)

    # master nodesets
    rel_nodes = rel_xml.children.first.children
    doc_root  = doc_xml.at_xpath('//w:document')
    pic_nodes = doc_xml.xpath('//pic:pic', { pic: 'http://schemas.openxmlformats.org/drawingml/2006/picture' })

    # namespaces
    @iframe_namespaces = doc_root.namespaces

    # ignorable namespaces
    if a = doc_root.attributes['Ignorable']
      @iframe_ignorables = a.value.split(/\s+/)
    end

    # relationships
    media_map = rel_nodes.reduce({}) do |hash, node|
      type = node.at_xpath('@Type').value
      if type.slice(-5, 5) == 'image'
        id   = node.at_xpath('@Id').value
        path = "word/#{ node.at_xpath('@Target').value }"
        hash[id] = path
      end
      hash
    end
    @iframe_relationships = pic_nodes.reduce([]) do |array, node|
      r_node  = node.children[1].children[0]
      r_id    = r_node.attributes['embed'].value.to_s
      r_media = media_map[r_id]

      p_node  = node.children[0].children[0]
      p_id    = p_node.attributes['id'].to_s.to_i
      p_name  = p_node.attributes['name'].to_s
      p_data  = zip.glob(r_media).first.get_input_stream.read

      # register relationship
      array << { id: r_id, type: 'image', target: p_name, data: p_data }
      array
    end
  end
end

#relationships ⇒ Object 



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# File 'lib/caracal/core/models/iframe_model.rb', line 110

def relationships
  @iframe_relationships || []
end

#valid? ⇒ Boolean

VALIDATION =======================

Returns:

  • (Boolean) 


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# File 'lib/caracal/core/models/iframe_model.rb', line 127

def valid?
  vals = option_keys.map { |m| send("iframe_#{ m }") }.compact
  vals = vals.reject { |v| v.size == 0 }
  vals.size > 0
end