src/librarian/command_line.py

   1 import argparse
   2 import os.path
   3 from .builders import builders
   4 from .document import WLDocument
   5
   6
   7 def main(*args, **kwargs):
   8     parser = argparse.ArgumentParser(description="PARSER DESCRIPTION")
   9
  10     parser.add_argument(
  11         'builder',
  12         choices=builders.keys(),
  13         help="Builder"
  14     )
  15     parser.add_argument('input_file')
  16     parser.add_argument(
  17         '-o', '--output-file', metavar='FILE',
  18         help='specifies the output file'
  19     )
  20     parser.add_argument(
  21         '-O', '--output-dir', metavar='DIR',
  22         help='specifies the directory for output'
  23     )
  24
  25     args = parser.parse_args()
  26     builder = builders[args.builder]
  27
  28     if args.output_file:
  29         output_file_path = args.output_file
  30     else:
  31         output_file_path = '.'.join((
  32             os.path.splitext(args.input_file)[0],
  33             builder.file_extension
  34         ))
  35         if args.output_dir:
  36             output_file_path = '/'.join((
  37                 args.output_dir,
  38                 output_file_path.rsplit('/', 1)[-1]
  39             ))
  40
  41     document = WLDocument(filename=args.input_file)
  42     output = document.build(args.builder)
  43     with open(output_file_path, 'wb') as f:
  44         f.write(output.get_bytes())