Class: Mail::AttachmentsList

Inherits:
Array
  • Object
show all
Defined in:
lib/mail/attachments_list.rb

Instance Method Summary collapse

Constructor Details

#initialize(parts_list) ⇒ AttachmentsList

Returns a new instance of AttachmentsList.



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# File 'lib/mail/attachments_list.rb', line 4

def initialize(parts_list)
  @parts_list = parts_list
  parts_list.map { |p|
    if p.content_type == "message/rfc822"
      Mail.new(p.body).attachments
    elsif p.parts.empty?
      p if p.attachment?
    else
      p.attachments
    end
  }.flatten.compact.each { |a| self << a }
  self
end

Instance Method Details

#[](index_value) ⇒ Object

Returns the attachment by filename or at index.

mail.attachments = File.read(‘test.png’) mail.attachments = File.read(‘test.jpg’)

mail.attachments.filename #=> ‘test.png’ mail.attachments.filename #=> ‘test.jpg’



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# File 'lib/mail/attachments_list.rb', line 25

def [](index_value)
  if index_value.is_a?(Fixnum)
    self.fetch(index_value)
  else
    self.select { |a| a.filename == index_value }.first
  end
end

#[]=(name, value) ⇒ Object 



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# File 'lib/mail/attachments_list.rb', line 33

def []=(name, value)
  default_values = { :content_type => "#{set_mime_type(name)}; filename=\"#{name}\"",
                     :content_transfer_encoding => "#{guess_encoding}",
                     :content_disposition => "attachment; filename=\"#{name}\"" }

  if value.is_a?(Hash)

    default_values[:body] = value.delete(:content) if value[:content]

    default_values[:body] = value.delete(:data) if value[:data]

    encoding = value.delete(:transfer_encoding) || value.delete(:encoding)
    if encoding
      if Mail::Encodings.defined? encoding
        default_values[:content_transfer_encoding] = encoding
      else
        raise "Do not know how to handle Content Transfer Encoding #{encoding}, please choose either quoted-printable or base64"
      end
    end

    if value[:mime_type]
      default_values[:content_type] = value.delete(:mime_type)
      @mime_type = MIME::Types[default_values[:content_type]].first
      default_values[:content_transfer_encoding] = guess_encoding
    end

    hash = default_values.merge(value)
  else
    default_values[:body] = value
    hash = default_values
  end

  if hash[:body].respond_to? :force_encoding and hash[:body].respond_to? :valid_encoding?
    if not hash[:body].valid_encoding? and default_values[:content_transfer_encoding].downcase == "binary"
      hash[:body].force_encoding("BINARY")
    end
  end
  
  attachment = Part.new(hash)
  attachment.add_content_id(hash[:content_id])

  @parts_list << attachment
end

#guess_encoding ⇒ Object

Uses the mime type to try and guess the encoding, if it is a binary type, or unknown, then we set it to binary, otherwise as set to plain text



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# File 'lib/mail/attachments_list.rb', line 79

def guess_encoding
  if @mime_type && !@mime_type.binary?
    "7bit"
  else
    "binary"
  end
end

#set_mime_type(filename) ⇒ Object 



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# File 'lib/mail/attachments_list.rb', line 87

def set_mime_type(filename)
  # Have to do this because MIME::Types is not Ruby 1.9 safe yet
  if RUBY_VERSION >= '1.9'
    new_file = String.new(filename).force_encoding(Encoding::BINARY)
    ext = new_file.split('.'.force_encoding(Encoding::BINARY)).last
    filename = "file.#{ext}".force_encoding('US-ASCII')
  end
  @mime_type = MIME::Types.type_for(filename).first
end