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refactor to only show specific options if possible

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This commit is contained in:
Isaac 2023-05-04 21:58:30 -07:00
parent 193731a017
commit d962376a9d
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GPG key ID: E69FB5A841448A48
1 changed files with 29 additions and 13 deletions
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42
borgmatic/commands/completion.py
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@ -75,7 +75,11 @@ file_metavars = (
file_destinations = 'config_paths'
def conditionally_emit_arg_completion(action: Action):
def has_exact_options(action: Action):
return action.metavar in file_metavars or action.dest in file_destinations or action.choices
def exact_options_completion(action: Action):
'''
Given an argparse.Action instance, return a completion invocation
that forces file completion or options completion, if the action
@ -84,21 +88,20 @@ def conditionally_emit_arg_completion(action: Action):
Otherwise, return an empty string.
'''
if not has_exact_options(action):
return ''
args = ' '.join(action.option_strings)
if action.metavar in file_metavars or action.dest in file_destinations:
return dedent(
f'''
complete -c borgmatic -a '{args}' -Fr -n "__borgmatic_last_arg {args}"'''
)
return f'''\ncomplete -c borgmatic -Fr -a '{args}' -n "__borgmatic_last_arg {args}"'''
if action.choices:
return dedent(
f'''
complete -c borgmatic -a '{' '.join(map(str, action.choices))}' -n "__borgmatic_last_arg {args}"'''
)
return f'''\ncomplete -c borgmatic -f -a '{' '.join(map(str, action.choices))}' -n "__borgmatic_last_arg {args}"'''
return ''
raise RuntimeError(
f'Unexpected action: {action} passes has_exact_options but has no choices produced'
)
def dedent_strip_as_tuple(string: str):
@ -114,6 +117,18 @@ def fish_completion():
all_subparsers = ' '.join(action for action in subparsers.choices.keys())
exact_option_args = tuple(
' '.join(action.option_strings)
for subparser in subparsers.choices.values()
for action in subparser._actions
if has_exact_options(action)
) + tuple(
' '.join(action.option_strings)
for action in top_level_parser._actions
if len(action.option_strings) > 0
if has_exact_options(action)
)
# Avert your eyes.
return '\n'.join(
dedent_strip_as_tuple(
@ -148,22 +163,23 @@ def fish_completion():
end
set --local subparser_condition "not __fish_seen_subcommand_from {all_subparsers}"
set --local exact_option_condition "not __borgmatic_last_arg {' '.join(exact_option_args)}"
'''
)
+ ('\n# subparser completions',)
+ tuple(
f'''complete -c borgmatic -f -n "$subparser_condition" -a '{action_name}' -d {shlex.quote(subparser.description)}'''
f'''complete -c borgmatic -f -n "$subparser_condition" -n "$exact_option_condition" -a '{action_name}' -d {shlex.quote(subparser.description)}'''
for action_name, subparser in subparsers.choices.items()
)
+ ('\n# global flags',)
+ tuple(
f'''complete -c borgmatic -f -a '{' '.join(action.option_strings)}' -d {shlex.quote(action.help)}{conditionally_emit_arg_completion(action)}'''
f'''complete -c borgmatic -f -n "$exact_option_condition" -a '{' '.join(action.option_strings)}' -d {shlex.quote(action.help)}{exact_options_completion(action)}'''
for action in top_level_parser._actions
if len(action.option_strings) > 0
)
+ ('\n# subparser flags',)
+ tuple(
f'''complete -c borgmatic -f -a '{' '.join(action.option_strings)}' -d {shlex.quote(action.help)} -n "__fish_seen_subcommand_from {action_name}"{conditionally_emit_arg_completion(action)}'''
f'''complete -c borgmatic -f -n "$exact_option_condition" -a '{' '.join(action.option_strings)}' -d {shlex.quote(action.help)} -n "__fish_seen_subcommand_from {action_name}"{exact_options_completion(action)}'''
for action_name, subparser in subparsers.choices.items()
for action in subparser._actions
)