You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
294 lines
11 KiB
294 lines
11 KiB
import copy
|
|
import os
|
|
import re
|
|
|
|
from .utils import echo
|
|
from .parser import split_arg_string
|
|
from .core import MultiCommand, Option, Argument
|
|
from .types import Choice
|
|
|
|
try:
|
|
from collections import abc
|
|
except ImportError:
|
|
import collections as abc
|
|
|
|
WORDBREAK = '='
|
|
|
|
# Note, only BASH version 4.4 and later have the nosort option.
|
|
COMPLETION_SCRIPT_BASH = '''
|
|
%(complete_func)s() {
|
|
local IFS=$'\n'
|
|
COMPREPLY=( $( env COMP_WORDS="${COMP_WORDS[*]}" \\
|
|
COMP_CWORD=$COMP_CWORD \\
|
|
%(autocomplete_var)s=complete $1 ) )
|
|
return 0
|
|
}
|
|
|
|
%(complete_func)setup() {
|
|
local COMPLETION_OPTIONS=""
|
|
local BASH_VERSION_ARR=(${BASH_VERSION//./ })
|
|
# Only BASH version 4.4 and later have the nosort option.
|
|
if [ ${BASH_VERSION_ARR[0]} -gt 4 ] || ([ ${BASH_VERSION_ARR[0]} -eq 4 ] && [ ${BASH_VERSION_ARR[1]} -ge 4 ]); then
|
|
COMPLETION_OPTIONS="-o nosort"
|
|
fi
|
|
|
|
complete $COMPLETION_OPTIONS -F %(complete_func)s %(script_names)s
|
|
}
|
|
|
|
%(complete_func)setup
|
|
'''
|
|
|
|
COMPLETION_SCRIPT_ZSH = '''
|
|
%(complete_func)s() {
|
|
local -a completions
|
|
local -a completions_with_descriptions
|
|
local -a response
|
|
response=("${(@f)$( env COMP_WORDS=\"${words[*]}\" \\
|
|
COMP_CWORD=$((CURRENT-1)) \\
|
|
%(autocomplete_var)s=\"complete_zsh\" \\
|
|
%(script_names)s )}")
|
|
|
|
for key descr in ${(kv)response}; do
|
|
if [[ "$descr" == "_" ]]; then
|
|
completions+=("$key")
|
|
else
|
|
completions_with_descriptions+=("$key":"$descr")
|
|
fi
|
|
done
|
|
|
|
if [ -n "$completions_with_descriptions" ]; then
|
|
_describe -V unsorted completions_with_descriptions -U -Q
|
|
fi
|
|
|
|
if [ -n "$completions" ]; then
|
|
compadd -U -V unsorted -Q -a completions
|
|
fi
|
|
compstate[insert]="automenu"
|
|
}
|
|
|
|
compdef %(complete_func)s %(script_names)s
|
|
'''
|
|
|
|
_invalid_ident_char_re = re.compile(r'[^a-zA-Z0-9_]')
|
|
|
|
|
|
def get_completion_script(prog_name, complete_var, shell):
|
|
cf_name = _invalid_ident_char_re.sub('', prog_name.replace('-', '_'))
|
|
script = COMPLETION_SCRIPT_ZSH if shell == 'zsh' else COMPLETION_SCRIPT_BASH
|
|
return (script % {
|
|
'complete_func': '_%s_completion' % cf_name,
|
|
'script_names': prog_name,
|
|
'autocomplete_var': complete_var,
|
|
}).strip() + ';'
|
|
|
|
|
|
def resolve_ctx(cli, prog_name, args):
|
|
"""
|
|
Parse into a hierarchy of contexts. Contexts are connected through the parent variable.
|
|
:param cli: command definition
|
|
:param prog_name: the program that is running
|
|
:param args: full list of args
|
|
:return: the final context/command parsed
|
|
"""
|
|
ctx = cli.make_context(prog_name, args, resilient_parsing=True)
|
|
args = ctx.protected_args + ctx.args
|
|
while args:
|
|
if isinstance(ctx.command, MultiCommand):
|
|
if not ctx.command.chain:
|
|
cmd_name, cmd, args = ctx.command.resolve_command(ctx, args)
|
|
if cmd is None:
|
|
return ctx
|
|
ctx = cmd.make_context(cmd_name, args, parent=ctx,
|
|
resilient_parsing=True)
|
|
args = ctx.protected_args + ctx.args
|
|
else:
|
|
# Walk chained subcommand contexts saving the last one.
|
|
while args:
|
|
cmd_name, cmd, args = ctx.command.resolve_command(ctx, args)
|
|
if cmd is None:
|
|
return ctx
|
|
sub_ctx = cmd.make_context(cmd_name, args, parent=ctx,
|
|
allow_extra_args=True,
|
|
allow_interspersed_args=False,
|
|
resilient_parsing=True)
|
|
args = sub_ctx.args
|
|
ctx = sub_ctx
|
|
args = sub_ctx.protected_args + sub_ctx.args
|
|
else:
|
|
break
|
|
return ctx
|
|
|
|
|
|
def start_of_option(param_str):
|
|
"""
|
|
:param param_str: param_str to check
|
|
:return: whether or not this is the start of an option declaration (i.e. starts "-" or "--")
|
|
"""
|
|
return param_str and param_str[:1] == '-'
|
|
|
|
|
|
def is_incomplete_option(all_args, cmd_param):
|
|
"""
|
|
:param all_args: the full original list of args supplied
|
|
:param cmd_param: the current command paramter
|
|
:return: whether or not the last option declaration (i.e. starts "-" or "--") is incomplete and
|
|
corresponds to this cmd_param. In other words whether this cmd_param option can still accept
|
|
values
|
|
"""
|
|
if not isinstance(cmd_param, Option):
|
|
return False
|
|
if cmd_param.is_flag:
|
|
return False
|
|
last_option = None
|
|
for index, arg_str in enumerate(reversed([arg for arg in all_args if arg != WORDBREAK])):
|
|
if index + 1 > cmd_param.nargs:
|
|
break
|
|
if start_of_option(arg_str):
|
|
last_option = arg_str
|
|
|
|
return True if last_option and last_option in cmd_param.opts else False
|
|
|
|
|
|
def is_incomplete_argument(current_params, cmd_param):
|
|
"""
|
|
:param current_params: the current params and values for this argument as already entered
|
|
:param cmd_param: the current command parameter
|
|
:return: whether or not the last argument is incomplete and corresponds to this cmd_param. In
|
|
other words whether or not the this cmd_param argument can still accept values
|
|
"""
|
|
if not isinstance(cmd_param, Argument):
|
|
return False
|
|
current_param_values = current_params[cmd_param.name]
|
|
if current_param_values is None:
|
|
return True
|
|
if cmd_param.nargs == -1:
|
|
return True
|
|
if isinstance(current_param_values, abc.Iterable) \
|
|
and cmd_param.nargs > 1 and len(current_param_values) < cmd_param.nargs:
|
|
return True
|
|
return False
|
|
|
|
|
|
def get_user_autocompletions(ctx, args, incomplete, cmd_param):
|
|
"""
|
|
:param ctx: context associated with the parsed command
|
|
:param args: full list of args
|
|
:param incomplete: the incomplete text to autocomplete
|
|
:param cmd_param: command definition
|
|
:return: all the possible user-specified completions for the param
|
|
"""
|
|
results = []
|
|
if isinstance(cmd_param.type, Choice):
|
|
# Choices don't support descriptions.
|
|
results = [(c, None)
|
|
for c in cmd_param.type.choices if str(c).startswith(incomplete)]
|
|
elif cmd_param.autocompletion is not None:
|
|
dynamic_completions = cmd_param.autocompletion(ctx=ctx,
|
|
args=args,
|
|
incomplete=incomplete)
|
|
results = [c if isinstance(c, tuple) else (c, None)
|
|
for c in dynamic_completions]
|
|
return results
|
|
|
|
|
|
def get_visible_commands_starting_with(ctx, starts_with):
|
|
"""
|
|
:param ctx: context associated with the parsed command
|
|
:starts_with: string that visible commands must start with.
|
|
:return: all visible (not hidden) commands that start with starts_with.
|
|
"""
|
|
for c in ctx.command.list_commands(ctx):
|
|
if c.startswith(starts_with):
|
|
command = ctx.command.get_command(ctx, c)
|
|
if not command.hidden:
|
|
yield command
|
|
|
|
|
|
def add_subcommand_completions(ctx, incomplete, completions_out):
|
|
# Add subcommand completions.
|
|
if isinstance(ctx.command, MultiCommand):
|
|
completions_out.extend(
|
|
[(c.name, c.get_short_help_str()) for c in get_visible_commands_starting_with(ctx, incomplete)])
|
|
|
|
# Walk up the context list and add any other completion possibilities from chained commands
|
|
while ctx.parent is not None:
|
|
ctx = ctx.parent
|
|
if isinstance(ctx.command, MultiCommand) and ctx.command.chain:
|
|
remaining_commands = [c for c in get_visible_commands_starting_with(ctx, incomplete)
|
|
if c.name not in ctx.protected_args]
|
|
completions_out.extend([(c.name, c.get_short_help_str()) for c in remaining_commands])
|
|
|
|
|
|
def get_choices(cli, prog_name, args, incomplete):
|
|
"""
|
|
:param cli: command definition
|
|
:param prog_name: the program that is running
|
|
:param args: full list of args
|
|
:param incomplete: the incomplete text to autocomplete
|
|
:return: all the possible completions for the incomplete
|
|
"""
|
|
all_args = copy.deepcopy(args)
|
|
|
|
ctx = resolve_ctx(cli, prog_name, args)
|
|
if ctx is None:
|
|
return []
|
|
|
|
# In newer versions of bash long opts with '='s are partitioned, but it's easier to parse
|
|
# without the '='
|
|
if start_of_option(incomplete) and WORDBREAK in incomplete:
|
|
partition_incomplete = incomplete.partition(WORDBREAK)
|
|
all_args.append(partition_incomplete[0])
|
|
incomplete = partition_incomplete[2]
|
|
elif incomplete == WORDBREAK:
|
|
incomplete = ''
|
|
|
|
completions = []
|
|
if start_of_option(incomplete):
|
|
# completions for partial options
|
|
for param in ctx.command.params:
|
|
if isinstance(param, Option) and not param.hidden:
|
|
param_opts = [param_opt for param_opt in param.opts +
|
|
param.secondary_opts if param_opt not in all_args or param.multiple]
|
|
completions.extend([(o, param.help) for o in param_opts if o.startswith(incomplete)])
|
|
return completions
|
|
# completion for option values from user supplied values
|
|
for param in ctx.command.params:
|
|
if is_incomplete_option(all_args, param):
|
|
return get_user_autocompletions(ctx, all_args, incomplete, param)
|
|
# completion for argument values from user supplied values
|
|
for param in ctx.command.params:
|
|
if is_incomplete_argument(ctx.params, param):
|
|
return get_user_autocompletions(ctx, all_args, incomplete, param)
|
|
|
|
add_subcommand_completions(ctx, incomplete, completions)
|
|
# Sort before returning so that proper ordering can be enforced in custom types.
|
|
return sorted(completions)
|
|
|
|
|
|
def do_complete(cli, prog_name, include_descriptions):
|
|
cwords = split_arg_string(os.environ['COMP_WORDS'])
|
|
cword = int(os.environ['COMP_CWORD'])
|
|
args = cwords[1:cword]
|
|
try:
|
|
incomplete = cwords[cword]
|
|
except IndexError:
|
|
incomplete = ''
|
|
|
|
for item in get_choices(cli, prog_name, args, incomplete):
|
|
echo(item[0])
|
|
if include_descriptions:
|
|
# ZSH has trouble dealing with empty array parameters when returned from commands, so use a well defined character '_' to indicate no description is present.
|
|
echo(item[1] if item[1] else '_')
|
|
|
|
return True
|
|
|
|
|
|
def bashcomplete(cli, prog_name, complete_var, complete_instr):
|
|
if complete_instr.startswith('source'):
|
|
shell = 'zsh' if complete_instr == 'source_zsh' else 'bash'
|
|
echo(get_completion_script(prog_name, complete_var, shell))
|
|
return True
|
|
elif complete_instr == 'complete' or complete_instr == 'complete_zsh':
|
|
return do_complete(cli, prog_name, complete_instr == 'complete_zsh')
|
|
return False
|