Class: PdfForms::Field

Inherits:
Object
  • Object
show all
Defined in:
lib/pdf_forms/field.rb

Constant Summary collapse

ATTRS =

Common Fields

[:name, :type, :options, :flags, :justification, :value, :value_default, :name_alt, :max_length]

Instance Method Summary collapse

Constructor Details

#initialize(field_description) ⇒ Field

FieldType: Button FieldName: Sprachoptionen_Inverssuche_Widerspruch FieldFlags: 0 FieldJustification: Left FieldStateOption: Ja FieldStateOption: Off

Representation of a PDF Form Field



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# File 'lib/pdf_forms/field.rb', line 13

def initialize(field_description)
  last_value = nil
  field_description.each_line do |line|
    line.chomp!

    if line =~ /^Field([A-Za-z]+):\s+(.*)/
      _, key, value = *$~

      if key == 'StateOption'
        (@options ||= []) << value

      else
        value.chomp!
        last_value = value
        key = key.split(/(?=[A-Z])/).map(&:downcase).join('_')
        instance_variable_set("@#{key}", value)

        # dynamically add in fields that we didn't anticipate in ATTRS
        unless self.respond_to?(key.to_sym)
          proc = Proc.new { instance_variable_get("@#{key}".to_sym) }
          self.class.send(:define_method, key.to_sym, proc)
        end
      end

    else
      # pdftk returns a line that doesn't start with "Field"
      # It happens when a text field has multiple lines
      last_value << "\n" << line
    end
  end
end

Instance Method Details

#to_hash ⇒ Object 



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# File 'lib/pdf_forms/field.rb', line 45

def to_hash
  hash = {}
  ATTRS.each do |attribute|
    hash[attribute] = self.send(attribute)
  end

  hash
end