Mercurial > libervia-backend

annotate sat_frontends/jp/cmd_input.py @ 3193:65d89a339dd3

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quick frontend (app): avoid crash when a listener is removed while being called
author Goffi <goffi@goffi.org>
date Fri, 28 Feb 2020 10:06:38 +0100
parents 559a625a236b
children 2f0be2b7de68
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/env python3
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2
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3
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4 # jp: a SàT command line tool
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5 # Copyright (C) 2009-2020 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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16
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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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19
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20
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21 import subprocess
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22 import argparse
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23 import sys
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24 import shlex
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25 import asyncio
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26 from . import base
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27 from sat.core.i18n import _
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28 from sat.core import exceptions
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29 from sat_frontends.jp.constants import Const as C
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30 from sat.tools.common.ansi import ANSI as A
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31
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32 __commands__ = ["Input"]
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33 OPT_STDIN = "stdin"
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34 OPT_SHORT = "short"
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35 OPT_LONG = "long"
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36 OPT_POS = "positional"
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37 OPT_IGNORE = "ignore"
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38 OPT_TYPES = (OPT_STDIN, OPT_SHORT, OPT_LONG, OPT_POS, OPT_IGNORE)
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39 OPT_EMPTY_SKIP = "skip"
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40 OPT_EMPTY_IGNORE = "ignore"
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41 OPT_EMPTY_CHOICES = (OPT_EMPTY_SKIP, OPT_EMPTY_IGNORE)
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43
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44 class InputCommon(base.CommandBase):
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45 def __init__(self, host, name, help):
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46 base.CommandBase.__init__(
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47 self, host, name, use_verbose=True, use_profile=False, help=help
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48 )
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49 self.idx = 0
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50 self.reset()
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51
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52 def reset(self):
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53 self.args_idx = 0
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54 self._stdin = []
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55 self._opts = []
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56 self._pos = []
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57 self._values_ori = []
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58
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59 def add_parser_options(self):
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60 self.parser.add_argument(
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61 "--encoding", default="utf-8", help=_("encoding of the input data")
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62 )
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63 self.parser.add_argument(
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64 "-i",
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65 "--stdin",
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66 action="append_const",
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67 const=(OPT_STDIN, None),
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68 dest="arguments",
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69 help=_("standard input"),
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70 )
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71 self.parser.add_argument(
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72 "-s",
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73 "--short",
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74 type=self.opt(OPT_SHORT),
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75 action="append",
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76 dest="arguments",
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77 help=_("short option"),
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78 )
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79 self.parser.add_argument(
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80 "-l",
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81 "--long",
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82 type=self.opt(OPT_LONG),
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83 action="append",
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84 dest="arguments",
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85 help=_("long option"),
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86 )
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87 self.parser.add_argument(
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88 "-p",
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89 "--positional",
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90 type=self.opt(OPT_POS),
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91 action="append",
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92 dest="arguments",
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93 help=_("positional argument"),
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94 )
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95 self.parser.add_argument(
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96 "-x",
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97 "--ignore",
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98 action="append_const",
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99 const=(OPT_IGNORE, None),
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100 dest="arguments",
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101 help=_("ignore value"),
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102 )
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103 self.parser.add_argument(
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104 "-D",
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105 "--debug",
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106 action="store_true",
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107 help=_("don't actually run commands but echo what would be launched"),
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108 )
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109 self.parser.add_argument(
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110 "--log", type=argparse.FileType("w"), help=_("log stdout to FILE")
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111 )
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112 self.parser.add_argument(
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113 "--log-err", type=argparse.FileType("w"), help=_("log stderr to FILE")
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114 )
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115 self.parser.add_argument("command", nargs=argparse.REMAINDER)
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116
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117 def opt(self, type_):
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118 return lambda s: (type_, s)
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119
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120 def addValue(self, value):
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121 """add a parsed value according to arguments sequence"""
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122 self._values_ori.append(value)
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123 arguments = self.args.arguments
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124 try:
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125 arg_type, arg_name = arguments[self.args_idx]
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126 except IndexError:
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127 self.disp(
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128 _("arguments in input data and in arguments sequence don't match"),
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129 error=True,
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130 )
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131 self.host.quit(C.EXIT_DATA_ERROR)
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132 self.args_idx += 1
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133 while self.args_idx < len(arguments):
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134 next_arg = arguments[self.args_idx]
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135 if next_arg[0] not in OPT_TYPES:
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136 # value will not be used if False or None, so we skip filter
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137 if value not in (False, None):
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138 # we have a filter
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139 filter_type, filter_arg = arguments[self.args_idx]
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140 value = self.filter(filter_type, filter_arg, value)
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141 else:
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142 break
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143 self.args_idx += 1
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144
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145 if value is None:
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diff changeset
146 # we ignore this argument
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147 return
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diff changeset
148
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diff changeset
149 if value is False:
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150 # we skip the whole row
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151 if self.args.debug:
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152 self.disp(
56f94936df1e code style reformatting using black
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diff changeset
153 A.color(
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154 C.A_SUBHEADER,
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155 _("values: "),
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156 A.RESET,
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157 ", ".join(self._values_ori),
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158 ),
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159 2,
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160 )
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161 self.disp(A.color(A.BOLD, _("**SKIPPING**\n")))
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162 self.reset()
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163 self.idx += 1
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164 raise exceptions.CancelError
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165
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166 if not isinstance(value, list):
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167 value = [value]
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168
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169 for v in value:
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170 if arg_type == OPT_STDIN:
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171 self._stdin.append(v)
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172 elif arg_type == OPT_SHORT:
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173 self._opts.append("-{}".format(arg_name))
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174 self._opts.append(v)
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175 elif arg_type == OPT_LONG:
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176 self._opts.append("--{}".format(arg_name))
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177 self._opts.append(v)
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178 elif arg_type == OPT_POS:
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179 self._pos.append(v)
2278
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180 elif arg_type == OPT_IGNORE:
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181 pass
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182 else:
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183 self.parser.error(
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184 _(
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185 "Invalid argument, an option type is expected, got {type_}:{name}"
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186 ).format(type_=arg_type, name=arg_name)
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187 )
2278
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188
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189 async def runCommand(self):
2278
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190 """run requested command with parsed arguments"""
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191 if self.args_idx != len(self.args.arguments):
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192 self.disp(
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diff changeset
193 _("arguments in input data and in arguments sequence don't match"),
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194 error=True,
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195 )
2278
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196 self.host.quit(C.EXIT_DATA_ERROR)
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197 self.disp(
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diff changeset
198 A.color(C.A_HEADER, _("command {idx}").format(idx=self.idx)),
2624
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diff changeset
199 no_lf=not self.args.debug,
56f94936df1e code style reformatting using black
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diff changeset
200 )
56f94936df1e code style reformatting using black
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diff changeset
201 stdin = "".join(self._stdin)
2278
489efbda377c jp (input): input command first draft:
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parents:
diff changeset
202 if self.args.debug:
2624
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parents: 2562
diff changeset
203 self.disp(
56f94936df1e code style reformatting using black
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parents: 2562
diff changeset
204 A.color(
3040
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diff changeset
205 C.A_SUBHEADER,
fee60f17ebac jp: jp asyncio port:
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diff changeset
206 _("values: "),
fee60f17ebac jp: jp asyncio port:
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parents: 3028
diff changeset
207 A.RESET,
fee60f17ebac jp: jp asyncio port:
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diff changeset
208 ", ".join([shlex.quote(a) for a in self._values_ori])
2624
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diff changeset
209 ),
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diff changeset
210 2,
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diff changeset
211 )
2282
d8e48c850ad2 jp (input): log improvments + empty filter:
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diff changeset
212
2278
489efbda377c jp (input): input command first draft:
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diff changeset
213 if stdin:
3028
ab2696e34d29 Python 3 port:
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diff changeset
214 self.disp(A.color(C.A_SUBHEADER, "--- STDIN ---"))
ab2696e34d29 Python 3 port:
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parents: 2771
diff changeset
215 self.disp(stdin)
ab2696e34d29 Python 3 port:
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parents: 2771
diff changeset
216 self.disp(A.color(C.A_SUBHEADER, "-------------"))
3040
fee60f17ebac jp: jp asyncio port:
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diff changeset
217
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diff changeset
218 self.disp(
3028
ab2696e34d29 Python 3 port:
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parents: 2771
diff changeset
219 "{indent}{prog} {static} {options} {positionals}".format(
ab2696e34d29 Python 3 port:
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parents: 2771
diff changeset
220 indent=4 * " ",
2624
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diff changeset
221 prog=sys.argv[0],
3028
ab2696e34d29 Python 3 port:
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diff changeset
222 static=" ".join(self.args.command),
3040
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diff changeset
223 options=" ".join(shlex.quote(o) for o in self._opts),
fee60f17ebac jp: jp asyncio port:
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diff changeset
224 positionals=" ".join(shlex.quote(p) for p in self._pos),
2624
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diff changeset
225 )
56f94936df1e code style reformatting using black
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parents: 2562
diff changeset
226 )
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ab2696e34d29 Python 3 port:
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diff changeset
227 self.disp("\n")
2278
489efbda377c jp (input): input command first draft:
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parents:
diff changeset
228 else:
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ab2696e34d29 Python 3 port:
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diff changeset
229 self.disp(" (" + ", ".join(self._values_ori) + ")", 2, no_lf=True)
2282
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diff changeset
230 args = [sys.argv[0]] + self.args.command + self._opts + self._pos
3040
fee60f17ebac jp: jp asyncio port:
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parents: 3028
diff changeset
231 p = await asyncio.create_subprocess_exec(
fee60f17ebac jp: jp asyncio port:
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diff changeset
232 *args,
2624
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diff changeset
233 stdin=subprocess.PIPE,
56f94936df1e code style reformatting using black
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parents: 2562
diff changeset
234 stdout=subprocess.PIPE,
56f94936df1e code style reformatting using black
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parents: 2562
diff changeset
235 stderr=subprocess.PIPE,
56f94936df1e code style reformatting using black
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parents: 2562
diff changeset
236 )
3040
fee60f17ebac jp: jp asyncio port:
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diff changeset
237 stdout, stderr = await p.communicate(stdin.encode('utf-8'))
2282
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diff changeset
238 log = self.args.log
d8e48c850ad2 jp (input): log improvments + empty filter:
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diff changeset
239 log_err = self.args.log_err
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diff changeset
240 log_tpl = "{command}\n{buff}\n\n"
2282
d8e48c850ad2 jp (input): log improvments + empty filter:
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parents: 2278
diff changeset
241 if log:
3040
fee60f17ebac jp: jp asyncio port:
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diff changeset
242 log.write(log_tpl.format(
fee60f17ebac jp: jp asyncio port:
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parents: 3028
diff changeset
243 command=" ".join(shlex.quote(a) for a in args),
fee60f17ebac jp: jp asyncio port:
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diff changeset
244 buff=stdout.decode('utf-8', 'replace')))
2282
d8e48c850ad2 jp (input): log improvments + empty filter:
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parents: 2278
diff changeset
245 if log_err:
3040
fee60f17ebac jp: jp asyncio port:
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diff changeset
246 log_err.write(log_tpl.format(
fee60f17ebac jp: jp asyncio port:
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parents: 3028
diff changeset
247 command=" ".join(shlex.quote(a) for a in args),
fee60f17ebac jp: jp asyncio port:
Goffi <goffi@goffi.org>
parents: 3028
diff changeset
248 buff=stderr.decode('utf-8', 'replace')))
fee60f17ebac jp: jp asyncio port:
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diff changeset
249 ret = p.returncode
2278
489efbda377c jp (input): input command first draft:
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parents:
diff changeset
250 if ret == 0:
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
251 self.disp(A.color(C.A_SUCCESS, _("OK")))
2278
489efbda377c jp (input): input command first draft:
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diff changeset
252 else:
3028
ab2696e34d29 Python 3 port:
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diff changeset
253 self.disp(A.color(C.A_FAILURE, _("FAILED")))
2278
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parents:
diff changeset
254
489efbda377c jp (input): input command first draft:
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parents:
diff changeset
255 self.reset()
489efbda377c jp (input): input command first draft:
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parents:
diff changeset
256 self.idx += 1
489efbda377c jp (input): input command first draft:
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parents:
diff changeset
257
489efbda377c jp (input): input command first draft:
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diff changeset
258 def filter(self, filter_type, filter_arg, value):
2282
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diff changeset
259 """change input value
d8e48c850ad2 jp (input): log improvments + empty filter:
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diff changeset
260
d8e48c850ad2 jp (input): log improvments + empty filter:
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diff changeset
261 @param filter_type(unicode): name of the filter
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diff changeset
262 @param filter_arg(unicode, None): argument of the filter
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diff changeset
263 @param value(unicode): value to filter
d8e48c850ad2 jp (input): log improvments + empty filter:
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parents: 2278
diff changeset
264 @return (unicode, False, None): modified value
d8e48c850ad2 jp (input): log improvments + empty filter:
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diff changeset
265 False to skip the whole row
d8e48c850ad2 jp (input): log improvments + empty filter:
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diff changeset
266 None to ignore this argument (but continue row with other ones)
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parents: 2278
diff changeset
267 """
2278
489efbda377c jp (input): input command first draft:
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parents:
diff changeset
268 raise NotImplementedError
489efbda377c jp (input): input command first draft:
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parents:
diff changeset
269
489efbda377c jp (input): input command first draft:
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parents:
diff changeset
270
489efbda377c jp (input): input command first draft:
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parents:
diff changeset
271 class Csv(InputCommon):
489efbda377c jp (input): input command first draft:
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parents:
diff changeset
272 def __init__(self, host):
3028
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diff changeset
273 super(Csv, self).__init__(host, "csv", _("comma-separated values"))
2278
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parents:
diff changeset
274
489efbda377c jp (input): input command first draft:
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parents:
diff changeset
275 def add_parser_options(self):
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diff changeset
276 InputCommon.add_parser_options(self)
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diff changeset
277 self.parser.add_argument(
56f94936df1e code style reformatting using black
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diff changeset
278 "-r",
56f94936df1e code style reformatting using black
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parents: 2562
diff changeset
279 "--row",
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parents: 2562
diff changeset
280 type=int,
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diff changeset
281 default=0,
3028
ab2696e34d29 Python 3 port:
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diff changeset
282 help=_("starting row (previous ones will be ignored)"),
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diff changeset
283 )
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parents: 2562
diff changeset
284 self.parser.add_argument(
56f94936df1e code style reformatting using black
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diff changeset
285 "-S",
56f94936df1e code style reformatting using black
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parents: 2562
diff changeset
286 "--split",
56f94936df1e code style reformatting using black
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parents: 2562
diff changeset
287 action="append_const",
56f94936df1e code style reformatting using black
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parents: 2562
diff changeset
288 const=("split", None),
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289 dest="arguments",
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290 help=_("split value in several options"),
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291 )
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292 self.parser.add_argument(
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293 "-E",
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294 "--empty",
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295 action="append",
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296 type=self.opt("empty"),
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297 dest="arguments",
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298 help=_("action to do on empty value ({choices})").format(
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299 choices=", ".join(OPT_EMPTY_CHOICES)
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300 ),
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301 )
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302
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303 def filter(self, filter_type, filter_arg, value):
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304 if filter_type == "split":
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305 return value.split()
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306 elif filter_type == "empty":
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307 if filter_arg == OPT_EMPTY_IGNORE:
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308 return value if value else None
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309 elif filter_arg == OPT_EMPTY_SKIP:
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310 return value if value else False
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311 else:
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312 self.parser.error(
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313 _("--empty value must be one of {choices}").format(
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314 choices=", ".join(OPT_EMPTY_CHOICES)
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315 )
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316 )
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317
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318 super(Csv, self).filter(filter_type, filter_arg, value)
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319
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320 async def start(self):
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321 import csv
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322
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323 if self.args.encoding:
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324 sys.stdin.reconfigure(encoding=self.args.encoding, errors="replace")
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325 reader = csv.reader(sys.stdin)
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326 for idx, row in enumerate(reader):
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327 try:
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328 if idx < self.args.row:
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329 continue
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330 for value in row:
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331 self.addValue(value)
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332 await self.runCommand()
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333 except exceptions.CancelError:
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334 #  this row has been cancelled, we skip it
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335 continue
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336
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337 self.host.quit()
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338
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339
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340 class Input(base.CommandBase):
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341 subcommands = (Csv,)
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342
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343 def __init__(self, host):
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344 super(Input, self).__init__(
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345 host,
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346 "input",
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347 use_profile=False,
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348 help=_("launch command with external input"),
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349 )