Module: XMP::Handler

Included in:
XMP
Defined in:
lib/xmp/handler.rb,
lib/xmp/handler/xml.rb,
lib/xmp/handler/file.rb,
lib/xmp/handler/exifr_jpeg.rb,
lib/xmp/handler/exifr_tiff.rb

Defined Under Namespace

Classes: ExifrJPEG, ExifrTIFF, File, XML

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#handlers ⇒ Object

Returns the value of attribute handlers.



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# File 'lib/xmp/handler.rb', line 2

def handlers
  @handlers
end

Instance Method Details

#new(object) ⇒ Object Also known as: parse

Raises:



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# File 'lib/xmp/handler.rb', line 4

def new(object)
  last_error = nil
  result     = object

  handlers.each do |handler|
    begin
      next unless new_result = handler.call(result)
      return new_result if new_result.is_a? XMP::Document
      result = new_result
    rescue XMP::Error => error
      last_error = error
    end
  end

  raise last_error if last_error
  raise XMP::Error, "cannot handle #{object.inspect}"
end