102 lines
3.6 KiB
Python
102 lines
3.6 KiB
Python
#!/usr/bin/env python3
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# Libervia CLI
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# Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from libervia.backend.core.i18n import _
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from libervia.backend.core import exceptions
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def escape(arg, smart=True):
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"""format arg with quotes
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@param smart(bool): if True, only escape if needed
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"""
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if smart and not " " in arg and not '"' in arg:
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return arg
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return '"' + arg.replace('"', '\\"') + '"'
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def get_cmd_choices(cmd=None, parser=None):
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try:
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choices = parser._subparsers._group_actions[0].choices
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return choices[cmd] if cmd is not None else choices
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except (KeyError, AttributeError):
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raise exceptions.NotFound
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def get_use_args(host, args, use, verbose=False, parser=None):
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"""format args for argparse parser with values prefilled
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@param host(LiberviaCli): LiberviaCli instance
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@param args(list(str)): arguments to use
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@param use(dict[str, str]): arguments to fill if found in parser
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@param verbose(bool): if True a message will be displayed when argument is used or not
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@param parser(argparse.ArgumentParser): parser to use
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@return (tuple[list[str],list[str]]): 2 args lists:
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- parser args, i.e. given args corresponding to parsers
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- use args, i.e. generated args from use
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"""
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# FIXME: positional args are not handled correclty
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# if there is more that one, the position is not corrected
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if parser is None:
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parser = host.parser
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# we check not optional args to see if there
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# is a corresonding parser
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# else USE args would not work correctly (only for current parser)
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parser_args = []
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for arg in args:
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if arg.startswith("-"):
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break
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try:
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parser = get_cmd_choices(arg, parser)
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except exceptions.NotFound:
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break
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parser_args.append(arg)
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# post_args are remaning given args,
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# without the ones corresponding to parsers
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post_args = args[len(parser_args) :]
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opt_args = []
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pos_args = []
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actions = {a.dest: a for a in parser._actions}
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for arg, value in use.items():
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try:
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if arg == "item" and not "item" in actions:
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# small hack when --item is appended to a --items list
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arg = "items"
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action = actions[arg]
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except KeyError:
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if verbose:
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host.disp(
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_(
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"ignoring {name}={value}, not corresponding to any argument (in USE)"
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).format(name=arg, value=escape(value))
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)
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else:
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if verbose:
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host.disp(
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_("arg {name}={value} (in USE)").format(name=arg, value=escape(value))
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)
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if not action.option_strings:
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pos_args.append(value)
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else:
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opt_args.append(action.option_strings[0])
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opt_args.append(value)
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return parser_args, opt_args + pos_args + post_args
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