forked from borgmatic-collective/borgmatic
58 lines
2.0 KiB
Python
58 lines
2.0 KiB
Python
from borgmatic.commands import arguments
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UPGRADE_MESSAGE = '''
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Your bash completions script is from a different version of borgmatic than is
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currently installed. Please upgrade your script so your completions match the
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command-line flags in your installed borgmatic! Try this to upgrade:
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sudo sh -c "borgmatic --bash-completion > $BASH_SOURCE"
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source $BASH_SOURCE
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'''
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def parser_flags(parser):
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'''
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Given an argparse.ArgumentParser instance, return its argument flags in a space-separated
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string.
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'''
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return ' '.join(option for action in parser._actions for option in action.option_strings)
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def bash_completion():
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'''
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Return a bash completion script for the borgmatic command. Produce this by introspecting
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borgmatic's command-line argument parsers.
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'''
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top_level_parser, subparsers = arguments.make_parsers()
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global_flags = parser_flags(top_level_parser)
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actions = ' '.join(subparsers.choices.keys())
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# Avert your eyes.
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return '\n'.join(
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(
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'check_version() {',
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' local this_script="$(cat "$BASH_SOURCE" 2> /dev/null)"',
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' local installed_script="$(borgmatic --bash-completion 2> /dev/null)"',
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' if [ "$this_script" != "$installed_script" ] && [ "$installed_script" != "" ];'
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f' then cat << EOF\n{UPGRADE_MESSAGE}\nEOF',
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' fi',
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'}',
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'complete_borgmatic() {',
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)
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+ tuple(
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''' if [[ " ${COMP_WORDS[*]} " =~ " %s " ]]; then
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COMPREPLY=($(compgen -W "%s %s %s" -- "${COMP_WORDS[COMP_CWORD]}"))
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return 0
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fi'''
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% (action, parser_flags(subparser), actions, global_flags)
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for action, subparser in subparsers.choices.items()
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)
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+ (
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' COMPREPLY=($(compgen -W "%s %s" -- "${COMP_WORDS[COMP_CWORD]}"))' # noqa: FS003
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% (actions, global_flags),
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' (check_version &)',
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'}',
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'\ncomplete -o bashdefault -o default -F complete_borgmatic borgmatic',
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)
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)
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