argh / argh /

# -*- coding: utf-8 -*-
#  Copyright (c) 2010—2012 Andrey Mikhailenko and contributors
#  This file is part of Argh.
#  Argh is free software under terms of the GNU Lesser
#  General Public License version 3 (LGPLv3) as published by the Free
#  Software Foundation. See the file README for copying conditions.
Shell completion

... warning::

    TODO: describe how to install

import sys
import os

from argh.utils import get_subparsers

__all__ = ['autocomplete']

def autocomplete(root_parser):
    if not os.environ.get('ARGH_AUTO_COMPLETE'):

    cwords = os.environ['COMP_WORDS'].split()[1:]

    # this is obviously needed when user edits a word in the middle of the
    # sentence. We don't support it yet but should:
    cword = int(os.environ['COMP_CWORD'])

    choices = _autocomplete(root_parser, cwords, cword)

    print(' '.join(choices))


def _autocomplete(root_parser, cwords, cword):

    def _collect_choices(parser, word):
        for a in parser._actions:
            if a.choices:
                for choice in a.choices:
                    if word:
                        if choice.startswith(word):
                            yield choice
                        yield choice

    choices = []

    # dig into the tree of parsers until we can yield no more choices

    # 1 ['']                      root parser  -> 'help fixtures'
    # 2 ['', 'fi']                root parser  -> 'fixtures'
    # 2 ['', 'fixtures']          subparser    -> 'load dump'
    # 3 ['', 'fixtures', 'lo']    subparser    -> 'load'
    # 3 ['', 'fixtures', 'load']  subparser    -> ''

    parser = root_parser
    choices = _collect_choices(parser, '')
    for word in cwords:
        # find the subparser and switch to it
        subparsers = get_subparsers(parser)
        if not subparsers:
        if word in subparsers.choices:
            parser = subparsers.choices[word]
            word = ''
        choices = _collect_choices(parser, word)

    return choices
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
Tip: Use ↑ and ↓ arrow keys to navigate and return to view the file.
Tip: You can also navigate files with Ctrl+j (next) and Ctrl+k (previous) and view the file with Ctrl+o.
Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.