mirror of
https://github.com/morpheus65535/bazarr
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116 lines
3.2 KiB
Python
116 lines
3.2 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# Copyright (c) 2014-2016 The arghelper developers. All rights reserved.
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# Project site: https://github.com/questrail/arghelper
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# Use of this source code is governed by a MIT-style license that
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# can be found in the LICENSE.txt file for the project.
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"""Provide helper functions for argparse
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"""
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# Try to future proof code so that it's Python 3.x ready
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from __future__ import print_function
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from __future__ import unicode_literals
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from __future__ import division
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from __future__ import absolute_import
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# Standard module imports
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import argparse
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import sys
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import os
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def extant_file(arg):
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"""Facade for extant_item(arg, arg_type="file")
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"""
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return extant_item(arg, "file")
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def extant_dir(arg):
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"""Facade for extant_item(arg, arg_type="directory")
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"""
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return extant_item(arg, "directory")
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def extant_item(arg, arg_type):
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"""Determine if parser argument is an existing file or directory.
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This technique comes from http://stackoverflow.com/a/11541450/95592
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and from http://stackoverflow.com/a/11541495/95592
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Args:
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arg: parser argument containing filename to be checked
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arg_type: string of either "file" or "directory"
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Returns:
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If the file exists, return the filename or directory.
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Raises:
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If the file does not exist, raise a parser error.
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"""
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if arg_type == "file":
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if not os.path.isfile(arg):
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raise argparse.ArgumentError(
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None,
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"The file {arg} does not exist.".format(arg=arg))
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else:
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# File exists so return the filename
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return arg
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elif arg_type == "directory":
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if not os.path.isdir(arg):
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raise argparse.ArgumentError(
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None,
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"The directory {arg} does not exist.".format(arg=arg))
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else:
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# Directory exists so return the directory name
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return arg
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def parse_config_input_output(args=sys.argv):
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"""Parse the args using the config_file, input_dir, output_dir pattern
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Args:
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args: sys.argv
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Returns:
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The populated namespace object from parser.parse_args().
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Raises:
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TBD
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"""
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parser = argparse.ArgumentParser(
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description='Process the input files using the given config')
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parser.add_argument(
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'config_file',
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help='Configuration file.',
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metavar='FILE', type=extant_file)
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parser.add_argument(
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'input_dir',
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help='Directory containing the input files.',
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metavar='DIR', type=extant_dir)
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parser.add_argument(
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'output_dir',
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help='Directory where the output files should be saved.',
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metavar='DIR', type=extant_dir)
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return parser.parse_args(args[1:])
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def parse_config(args=sys.argv):
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"""Parse the args using the config_file pattern
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Args:
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args: sys.argv
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Returns:
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The populated namespace object from parser.parse_args().
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Raises:
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TBD
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"""
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parser = argparse.ArgumentParser(
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description='Read in the config file')
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parser.add_argument(
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'config_file',
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help='Configuration file.',
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metavar='FILE', type=extant_file)
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return parser.parse_args(args[1:])
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