old_contents: #!/usr/bin/env python
  import argparse
  import shutil
  
  import icqsol_utils
  from icqsol.shapes.icqShapeManager import ShapeManager
  
  # Parse Command Line.
  parser = argparse.ArgumentParser()
  parser.add_argument('--expression', dest='expression', help='Composition expression')
  parser.add_argument('--shape_dataset', dest='shape_datasets', action='append', nargs=4, help='Shape datasets selected from history')
  parser.add_argument('--output', dest='output', help='Output dataset')
  parser.add_argument('--output_vtk_type', dest='output_vtk_type', help='Output file format and type')
  
  args = parser.parse_args()
  
  tmp_dir = icqsol_utils.get_temp_dir()
  shape_tuples = []
  shape_mgr = ShapeManager()
  
  # Load the shapes.
  for (expression_var, dataset_path, galaxy_ext, vtk_dataset_type) in args.shape_datasets:
      # Define the file format and type.
      format, file_type = icqsol_utils.get_format_and_type(galaxy_ext)
      if format == icqsol_utils.VTK:
          shape_mgr.setReader(file_format=format, vtk_dataset_type=vtk_dataset_type)
      else:
          shape_mgr.setReader(file_format=format)
      icqsol_path = icqsol_utils.get_input_file_path(tmp_dir, dataset_path, format)
      shape_tuple = (expression_var, shape_mgr.loadAsShape(icqsol_path))
      shape_tuples.append(shape_tuple)
  
  # Define the output file format and type.
  output_format, output_file_type = icqsol_utils.get_format_and_type(args.output_vtk_type)
  tmp_output_path = icqsol_utils.get_temporary_file_path(tmp_dir, output_format)
  
  shape_mgr.setWriter(file_format=output_format, vtk_dataset_type=icqsol_utils.POLYDATA)
  
  # Compose the shapes.
  composite_shape = shape_mgr.composeShapes(shape_tuples, args.expression)
  
  # Save the output.
  shape_mgr.saveShape(shape=composite_shape, file_name=tmp_output_path, file_type=output_file_type)
  shutil.move(tmp_output_path, args.output)
  
new_contents: #!/usr/bin/env python
  import argparse
  import shutil
  
  import icqsol_utils
  
  # Parse Command Line.
  parser = argparse.ArgumentParser()
  parser.add_argument('--expression', dest='expression', help='Composition expression')
  parser.add_argument('--shape_dataset', dest='shape_datasets', action='append', nargs=4, help='Shape datasets selected from history')
  parser.add_argument('--output', dest='output', help='Output dataset')
  parser.add_argument('--output_vtk_type', dest='output_vtk_type', help='Output file format and type')
  
  args = parser.parse_args()
  
  tmp_dir = icqsol_utils.get_temp_dir()
  shape_tuples = []
  shape_mgr = icqsol_utils.get_shape_manager()
  
  # Load the shapes.
  for (expression_var, dataset_path, galaxy_ext, vtk_dataset_type) in args.shape_datasets:
      # Define the file format and type.
      format, file_type = icqsol_utils.get_format_and_type(galaxy_ext)
      if format == icqsol_utils.VTK:
          shape_mgr.setReader(file_format=format, vtk_dataset_type=vtk_dataset_type)
      else:
          shape_mgr.setReader(file_format=format)
      icqsol_path = icqsol_utils.get_input_file_path(tmp_dir, dataset_path, format)
      shape_tuple = (expression_var, shape_mgr.loadAsShape(icqsol_path))
      shape_tuples.append(shape_tuple)
  
  # Define the output file format and type.
  output_format, output_file_type = icqsol_utils.get_format_and_type(args.output_vtk_type)
  tmp_output_path = icqsol_utils.get_temporary_file_path(tmp_dir, output_format)
  
  shape_mgr.setWriter(file_format=output_format, vtk_dataset_type=icqsol_utils.POLYDATA)
  
  # Compose the shapes.
  composite_shape = shape_mgr.composeShapes(shape_tuples, args.expression)
  
  # Save the output.
  shape_mgr.saveShape(shape=composite_shape, file_name=tmp_output_path, file_type=output_file_type)
  shutil.move(tmp_output_path, args.output)
  
subject: Update the icqsol_compose_shapes tool to use icqsol_utilos encapsulation.