Class: WOFF::Builder

Inherits:
Object
  • Object
show all
Defined in:
lib/woff/builder.rb

Overview

Used in generation of WOFF files with modified metadata for licensee and license id information.

woff = WOFF::Builder.new("/Users/Josh/Desktop/sample.woff")
woff.font_with_licensee_and_id("The Friends", "L012356093901")

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ Builder

Returns a new instance of Builder.



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# File 'lib/woff/builder.rb', line 9

def initialize(file)
  @location = file
end

Instance Method Details

#font_with_licensee_and_id(name, id) ⇒ Object 



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# File 'lib/woff/builder.rb', line 13

def font_with_licensee_and_id(name, id)
  font_with_metadata(licensee: name, license_id: id)
end

#font_with_metadata(licensee: nil, license_id: nil, license_text: nil, description: nil) ⇒ Object 



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# File 'lib/woff/builder.rb', line 17

def font_with_metadata(licensee: nil, license_id: nil, license_text: nil, description: nil)
  metadata_xml = data.metadata.length > 0 ? compressor.inflate(data.metadata) : default_metadata
  metadata_doc = REXML::Document.new(metadata_xml)

  if licensee
    if metadata_doc.root.elements["licensee"]
      metadata_doc.root.elements["licensee"].attributes["name"] = licensee
    else
      metadata_doc.root.add_element "licensee", { "name" => licensee }
    end
  end

  if license_id
    if metadata_doc.root.elements["license"]
      metadata_doc.root.elements["license"].attributes["id"] = license_id
    else
      metadata_doc.root.add_element "license", { "id" => license_id }
    end
  end

  if license_text
    license_el = metadata_doc.root.elements["license"]
    unless license_el
      license_el = metadata_doc.root.add_element "license"
    end

    license_text_el = license_el.elements["text"]
    unless license_text_el
      license_text_el = license_el.add_element("text", { "lang" => "en "})
    end

    license_text_el.text = license_text
  end

  if description
    description_el = metadata_doc.root.elements["description"]
    unless description_el
      description_el = metadata_doc.root.add_element "description"
    end

    description_text_el = description_el.elements["text"]
    unless description_text_el
      description_text_el = description_el.add_element("text", { "lang" => "en "})
    end

    description_text_el.text = description
  end

  compressed_metadata = compressor.deflate(metadata_doc.to_s)

  data.meta_orig_length = metadata_doc.to_s.bytesize
  data.metadata = compressed_metadata
  data.meta_length = compressed_metadata.bytesize
  data.meta_offset = data.metadata.abs_offset # "Offset to metadata block, from beginning of WOFF file."

  data.data_length = data.num_bytes

  data.to_binary_s
end