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annotate sat_frontends/jp/arg_tools.py @ 3087:a51f7fce1e2c

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tools (stream): data modification on SatFile: - if `data_cb` is used and if it returns a not None value, it is used instead of the data read from the file. This allows data modification on the fly, useful notably for encryption - new `check_size_with_read` argument which check size on `close()` using amount of data actually read/written instead of file size. This avoid a warning when file is modified on the fly - added `closed` attribute
author Goffi <goffi@goffi.org>
date Fri, 20 Dec 2019 12:28:04 +0100
parents ab2696e34d29
children 9d0df638c8b4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # jp: a SàT command line tool
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5 # Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 from sat.core.i18n import _
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21 from sat.core import exceptions
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24 def escape(arg, smart=True):
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25 """format arg with quotes
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27 @param smart(bool): if True, only escape if needed
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28 """
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29 if smart and not " " in arg and not '"' in arg:
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30 return arg
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31 return '"' + arg.replace('"', '\\"') + '"'
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32
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33
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34 def get_cmd_choices(cmd=None, parser=None):
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35 try:
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36 choices = parser._subparsers._group_actions[0].choices
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37 return choices[cmd] if cmd is not None else choices
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38 except (KeyError, AttributeError):
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39 raise exceptions.NotFound
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42 def get_use_args(host, args, use, verbose=False, parser=None):
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43 """format args for argparse parser with values prefilled
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44
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45 @param host(JP): jp instance
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46 @param args(list(str)): arguments to use
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47 @param use(dict[str, str]): arguments to fill if found in parser
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48 @param verbose(bool): if True a message will be displayed when argument is used or not
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49 @param parser(argparse.ArgumentParser): parser to use
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50 @return (tuple[list[str],list[str]]): 2 args lists:
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51 - parser args, i.e. given args corresponding to parsers
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52 - use args, i.e. generated args from use
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53 """
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54 # FIXME: positional args are not handled correclty
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55 # if there is more that one, the position is not corrected
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56 if parser is None:
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57 parser = host.parser
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58
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59 # we check not optional args to see if there
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60 # is a corresonding parser
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61 # else USE args would not work correctly (only for current parser)
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62 parser_args = []
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63 for arg in args:
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64 if arg.startswith("-"):
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65 break
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66 try:
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67 parser = get_cmd_choices(arg, parser)
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68 except exceptions.NotFound:
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69 break
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70 parser_args.append(arg)
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71
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72 # post_args are remaning given args,
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73 # without the ones corresponding to parsers
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74 post_args = args[len(parser_args) :]
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75
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76 opt_args = []
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77 pos_args = []
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78 actions = {a.dest: a for a in parser._actions}
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79 for arg, value in use.items():
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80 try:
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81 if arg == "item" and not "item" in actions:
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82 # small hack when --item is appended to a --items list
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83 arg = "items"
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84 action = actions[arg]
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85 except KeyError:
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86 if verbose:
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87 host.disp(
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88 _(
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89 "ignoring {name}={value}, not corresponding to any argument (in USE)"
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90 ).format(name=arg, value=escape(value))
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91 )
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92 else:
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93 if verbose:
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94 host.disp(
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95 _("arg {name}={value} (in USE)").format(
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96 name=arg, value=escape(value)
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97 )
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98 )
2315
8d9bd5d77336 jp (arg_tools): moved get_cmd_choices, get_use_args and escape to a new arg_tools module, so they can be used in other commands than shell
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99 if not action.option_strings:
8d9bd5d77336 jp (arg_tools): moved get_cmd_choices, get_use_args and escape to a new arg_tools module, so they can be used in other commands than shell
Goffi <goffi@goffi.org>
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100 pos_args.append(value)
8d9bd5d77336 jp (arg_tools): moved get_cmd_choices, get_use_args and escape to a new arg_tools module, so they can be used in other commands than shell
Goffi <goffi@goffi.org>
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101 else:
8d9bd5d77336 jp (arg_tools): moved get_cmd_choices, get_use_args and escape to a new arg_tools module, so they can be used in other commands than shell
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parents:
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102 opt_args.append(action.option_strings[0])
8d9bd5d77336 jp (arg_tools): moved get_cmd_choices, get_use_args and escape to a new arg_tools module, so they can be used in other commands than shell
Goffi <goffi@goffi.org>
parents:
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103 opt_args.append(value)
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f4e05600577b jp (arg_tools): args is not modified anymore in get_use_args + fixed args returned + parser_args are returned separatly (return is now a tuple)
Goffi <goffi@goffi.org>
parents: 2315
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104 return parser_args, opt_args + pos_args + post_args