Class: Saviour::Uploader::ProcessorsRunner

Inherits:
Object
  • Object
show all
Defined in:
lib/saviour/uploader/processors_runner.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(uploader) ⇒ ProcessorsRunner

Returns a new instance of ProcessorsRunner.



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# File 'lib/saviour/uploader/processors_runner.rb', line 8

def initialize(uploader)
  @uploader = uploader
end

Instance Attribute Details

#contents ⇒ Object

Returns the value of attribute contents.



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# File 'lib/saviour/uploader/processors_runner.rb', line 5

def contents
  @contents
end

#file ⇒ Object 



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# File 'lib/saviour/uploader/processors_runner.rb', line 16

def file
  @file ||= Tempfile.new([SecureRandom.hex, ::File.extname(filename)]).tap { |x| x.binmode }
end

#filename ⇒ Object

Returns the value of attribute filename.



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# File 'lib/saviour/uploader/processors_runner.rb', line 6

def filename
  @filename
end

Instance Method Details

#advance!(processor, previous_type) ⇒ Object 



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# File 'lib/saviour/uploader/processors_runner.rb', line 32

def advance!(processor, previous_type)
  if processor[:type] != previous_type
    if processor[:type] == :memory
      self.contents = ::File.read(file)
    else
      file.rewind
      file.truncate(0)
      file.binmode
      file.write(contents)
      file.flush
      file.rewind
    end
  end
end

#matching_processors ⇒ Object 



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# File 'lib/saviour/uploader/processors_runner.rb', line 12

def matching_processors
  @uploader.class.processors
end

#run!(content_data, initial_filename) ⇒ Object 



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# File 'lib/saviour/uploader/processors_runner.rb', line 67

def run!(content_data, initial_filename)
  self.contents = content_data
  self.filename = initial_filename
  previous_type = :memory

  matching_processors.each do |processor|
    advance!(processor, previous_type)

    run_processor(processor)
    previous_type = processor[:type]
  end

  if previous_type == :file
    self.contents = ::File.read(file)
  end

  file.close!

  [contents, filename]
end

#run_as_file!(start_file, initial_filename) ⇒ Object 



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# File 'lib/saviour/uploader/processors_runner.rb', line 88

def run_as_file!(start_file, initial_filename)
  @file = start_file
  @contents = nil
  @filename = initial_filename

  previous_type = :file

  matching_processors.each do |processor|
    advance!(processor, previous_type)

    run_processor(processor)
    previous_type = processor[:type]
  end

  if previous_type == :memory
    file.rewind
    file.truncate(0)
    file.binmode
    file.write(contents)
    file.flush
    file.rewind
  end

  [file, filename]
end

#run_method_or_block(method_or_block, opts, data) ⇒ Object 



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# File 'lib/saviour/uploader/processors_runner.rb', line 20

def run_method_or_block(method_or_block, opts, data)
  if method_or_block.respond_to?(:call)
    @uploader.instance_exec(data, filename, &method_or_block)
  else
    if opts.empty?
      @uploader.send(method_or_block, data, filename)
    else
      @uploader.send(method_or_block, data, filename, **opts)
    end
  end
end

#run_processor(processor) ⇒ Object 



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# File 'lib/saviour/uploader/processors_runner.rb', line 47

def run_processor(processor)
  method_or_block = processor[:method_or_block]
  opts = processor[:opts]

  if processor[:type] == :memory
    result = run_method_or_block(method_or_block, opts, contents)

    self.contents = result[0]
    self.filename = result[1]

  else
    result = run_method_or_block(method_or_block, opts, file)

    self.file = result[0]
    file.reopen(file.path, "r+")

    self.filename = result[1]
  end
end