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annotate libervia/cli/cmd_input.py @ 4278:240d8b7ad906

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component Conferences: implementation of SFU component to make multi-party A/V conferences: This component wrap `Galène` SFU and translate its signaling to XMPP Jingle in both direction. rel 445
author Goffi <goffi@goffi.org>
date Fri, 05 Jul 2024 17:18:37 +0200
parents 0d7bb4df2343
children
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 # Libervia CLI
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5 # Copyright (C) 2009-2021 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 libervia.backend.core.i18n import _
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28 from libervia.backend.core import exceptions
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29 from libervia.cli.constants import Const as C
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30 from libervia.backend.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 add_value(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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146 # we ignore this argument
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147 return
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148
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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(
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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)
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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 )
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188
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189 async def runCommand(self):
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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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193 _("arguments in input data and in arguments sequence don't match"),
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194 error=True,
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195 )
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196 self.host.quit(C.EXIT_DATA_ERROR)
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197 end = "\n" if self.args.debug else " "
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198 self.disp(
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199 A.color(C.A_HEADER, _("command {idx}").format(idx=self.idx)),
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200 end=end,
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201 )
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202 stdin = "".join(self._stdin)
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203 if self.args.debug:
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204 self.disp(
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205 A.color(
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206 C.A_SUBHEADER,
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207 _("values: "),
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208 A.RESET,
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209 ", ".join([shlex.quote(a) for a in self._values_ori]),
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210 ),
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211 2,
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212 )
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213
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214 if stdin:
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215 self.disp(A.color(C.A_SUBHEADER, "--- STDIN ---"))
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216 self.disp(stdin)
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217 self.disp(A.color(C.A_SUBHEADER, "-------------"))
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218
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219 self.disp(
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220 "{indent}{prog} {static} {options} {positionals}".format(
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221 indent=4 * " ",
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222 prog=sys.argv[0],
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223 static=" ".join(self.args.command),
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224 options=" ".join(shlex.quote(o) for o in self._opts),
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225 positionals=" ".join(shlex.quote(p) for p in self._pos),
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226 )
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227 )
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228 self.disp("\n")
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229 else:
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230 self.disp(" (" + ", ".join(self._values_ori) + ")", 2, end=" ")
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231 args = [sys.argv[0]] + self.args.command + self._opts + self._pos
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232 p = await asyncio.create_subprocess_exec(
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233 *args,
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234 stdin=subprocess.PIPE,
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235 stdout=subprocess.PIPE,
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236 stderr=subprocess.PIPE,
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237 )
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238 stdout, stderr = await p.communicate(stdin.encode("utf-8"))
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239 log = self.args.log
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240 log_err = self.args.log_err
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241 log_tpl = "{command}\n{buff}\n\n"
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242 if log:
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243 log.write(
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244 log_tpl.format(
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245 command=" ".join(shlex.quote(a) for a in args),
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246 buff=stdout.decode("utf-8", "replace"),
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247 )
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248 )
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249 if log_err:
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250 log_err.write(
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251 log_tpl.format(
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252 command=" ".join(shlex.quote(a) for a in args),
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253 buff=stderr.decode("utf-8", "replace"),
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254 )
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255 )
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256 ret = p.returncode
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257 if ret == 0:
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258 self.disp(A.color(C.A_SUCCESS, _("OK")))
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259 else:
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260 self.disp(A.color(C.A_FAILURE, _("FAILED")))
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261
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262 self.reset()
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263 self.idx += 1
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264
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265 def filter(self, filter_type, filter_arg, value):
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266 """change input value
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267
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268 @param filter_type(unicode): name of the filter
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269 @param filter_arg(unicode, None): argument of the filter
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270 @param value(unicode): value to filter
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271 @return (unicode, False, None): modified value
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272 False to skip the whole row
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273 None to ignore this argument (but continue row with other ones)
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274 """
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275 raise NotImplementedError
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276
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277
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278 class Csv(InputCommon):
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279 def __init__(self, host):
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280 super(Csv, self).__init__(host, "csv", _("comma-separated values"))
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281
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282 def add_parser_options(self):
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283 InputCommon.add_parser_options(self)
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284 self.parser.add_argument(
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285 "-r",
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diff changeset
286 "--row",
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287 type=int,
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288 default=0,
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289 help=_("starting row (previous ones will be ignored)"),
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290 )
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291 self.parser.add_argument(
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292 "-S",
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293 "--split",
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294 action="append_const",
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295 const=("split", None),
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296 dest="arguments",
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297 help=_("split value in several options"),
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298 )
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299 self.parser.add_argument(
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300 "-E",
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301 "--empty",
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302 action="append",
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303 type=self.opt("empty"),
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304 dest="arguments",
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305 help=_("action to do on empty value ({choices})").format(
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306 choices=", ".join(OPT_EMPTY_CHOICES)
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307 ),
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308 )
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309
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310 def filter(self, filter_type, filter_arg, value):
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311 if filter_type == "split":
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312 return value.split()
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313 elif filter_type == "empty":
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314 if filter_arg == OPT_EMPTY_IGNORE:
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315 return value if value else None
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316 elif filter_arg == OPT_EMPTY_SKIP:
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317 return value if value else False
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318 else:
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319 self.parser.error(
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320 _("--empty value must be one of {choices}").format(
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321 choices=", ".join(OPT_EMPTY_CHOICES)
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322 )
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323 )
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324
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325 super(Csv, self).filter(filter_type, filter_arg, value)
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326
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327 async def start(self):
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328 import csv
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329
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330 if self.args.encoding:
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331 sys.stdin.reconfigure(encoding=self.args.encoding, errors="replace")
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332 reader = csv.reader(sys.stdin)
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333 for idx, row in enumerate(reader):
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334 try:
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335 if idx < self.args.row:
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336 continue
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337 for value in row:
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338 self.add_value(value)
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339 await self.runCommand()
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340 except exceptions.CancelError:
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341 #  this row has been cancelled, we skip it
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342 continue
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343
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344 self.host.quit()
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345
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346
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347 class Input(base.CommandBase):
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348 subcommands = (Csv,)
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349
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350 def __init__(self, host):
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351 super(Input, self).__init__(
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352 host,
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353 "input",
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354 use_profile=False,
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355 help=_("launch command with external input"),
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356 )