Class: IMW::Tools::Transferer

Inherits:
Object
  • Object
show all
Defined in:
lib/imw/tools/transferer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(action, source, destination) ⇒ Transferer

Returns a new instance of Transferer.

Raises:



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# File 'lib/imw/tools/transferer.rb', line 7

def initialize action, source, destination
  @action      = normalize_action(action)
  @source      = IMW.open(source)
  @destination = IMW.open(destination)
  raise IMW::PathError.new("Source and destination have the same URI: #{@source.uri}") if @source.uri.to_s == @destination.uri.to_s
end

Instance Attribute Details

#action ⇒ Object

Returns the value of attribute action.



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# File 'lib/imw/tools/transferer.rb', line 5

def action
  @action
end

#destination ⇒ Object

Returns the value of attribute destination.



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# File 'lib/imw/tools/transferer.rb', line 5

def destination
  @destination
end

#source ⇒ Object

Returns the value of attribute source.



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# File 'lib/imw/tools/transferer.rb', line 5

def source
  @source
end

Instance Method Details

#transfer! ⇒ Object

Transfer source to destination.

For local transfer, will raise errors unless the necessary paths exist.



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# File 'lib/imw/tools/transferer.rb', line 18

def transfer!
  if source.is_local? 
    source.should_exist!("Cannot #{action}") 
    source_scheme = 'file'                   
  else
    source_scheme = source.scheme
  end
  
  if destination.is_local?
    destination.dir.should_exist!("Cannot #{action}")          
    destination_scheme = 'file'
  else
    destination_scheme = destination.scheme
  end
  
  method             = "#{source_scheme}_to_#{destination_scheme}"
  
  if respond_to?(method)
    send(method)
  else
    raise IMW::NoMethodError.new("Do not know how to #{action} #{source.uri} => #{destination.uri} (#{source_scheme.inspect} => #{destination_scheme.inspect})")
  end
  destination.reopen
end