Class: Depix::Editor

Inherits:
Delegator
  • Object
show all
Defined in:
lib/depix/editor.rb

Overview

Used to edit DPX headers. Create an Editor object and pass the path to the file to it. Change the headers variable to contain the edited DPX headers and call commit!. Note that the DPX header will be overwritten in place - if you want to save another version you need to manage it yourself.

dpx = Depix::Editor.new("/RAID/scans/1374470_adjusted.dpx")
dpx.file.copyright = "Copyleft"
dpx.file.reserve = "FileReserve"
dpx.orientation.reserve = "OrientReserve"
dpx.orientation.device = "Chainik"
dpx.orientation.serial = "43"
dpx.film.reserve = "FilmRezerve"
dpx.file.project = "Mastermind"

dpx.commit! # will write out the headers

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file_path) ⇒ Editor

Create a new editor for the file at path



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# File 'lib/depix/editor.rb', line 24

def initialize(file_path)
  @path = file_path
  @dpx = Depix.from_file(@path)
end

Instance Attribute Details

#path ⇒ Object (readonly)

Stores the path to file



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# File 'lib/depix/editor.rb', line 21

def path
  @path
end

Instance Method Details

#__getobj__ ⇒ Object 



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# File 'lib/depix/editor.rb', line 56

def __getobj__
  @dpx # return object we are delegating to, required
end

#commit! ⇒ Object

Save the headers to file at path, overwriting the old ones



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# File 'lib/depix/editor.rb', line 39

def commit!
  raise "No headers" unless @dpx
  raise "Cannot pack LE headers yet" if @dpx.le?
  packed = @dpx.class.pack(@dpx)
  
  # Use in-place writing into DPX file (this is what + does)
  File.open(@path, 'rb+') do | f |
    f.seek(0, IO::SEEK_SET); f.write(packed)
  end
end

#copy_from(another, *fields_to_copy) ⇒ Object

Copy headers from another DPX object



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# File 'lib/depix/editor.rb', line 30

def copy_from(another, *fields_to_copy)
  if fields_to_copy.empty?
    @dpx = another.dup
  else
    fields_to_copy.each{|f| @dpx[f] = another[f] }
  end
end

#headers ⇒ Object

DEPRECATED



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# File 'lib/depix/editor.rb', line 51

def headers
  STDERR.puts "Depix::Editor#headers is deprecated, use the Editor itself instead"
  self
end