Mercurial > libervia-backend

annotate sat_frontends/jp/cmd_shell.py @ 3513:753d151da886

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XEP-0277: new preview/mbPreview method: This method does more or less the same thing as sending, but without actually sending the item, and parse the generated element just after. This way, the triggers are run, and a preview of the item can be made for the resulting microblog data.
author Goffi <goffi@goffi.org>
date Thu, 29 Apr 2021 15:49:59 +0200
parents 7892585b7e17
children 524856bd7b19
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) 2009-2021 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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20
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21 import cmd
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22 import sys
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23 import shlex
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24 import subprocess
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25 from . import base
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26 from sat.core.i18n import _
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27 from sat.core import exceptions
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28 from sat_frontends.jp.constants import Const as C
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29 from sat_frontends.jp import arg_tools
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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__ = ["Shell"]
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33 INTRO = _(
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34 """Welcome to {app_name} shell, the Salut à Toi shell !
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35
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36 This enrironment helps you using several {app_name} commands with similar parameters.
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37
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38 To quit, just enter "quit" or press C-d.
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39 Enter "help" or "?" to know what to do
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40 """
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41 ).format(app_name=C.APP_NAME)
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42
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43
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44 class Shell(base.CommandBase, cmd.Cmd):
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45 def __init__(self, host):
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46 base.CommandBase.__init__(
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47 self, host, "shell",
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48 help=_("launch jp in shell (REPL) mode")
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49 )
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50 cmd.Cmd.__init__(self)
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51
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52 def parse_args(self, args):
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53 """parse line arguments"""
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54 return shlex.split(args, posix=True)
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55
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56 def update_path(self):
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57 self._cur_parser = self.host.parser
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58 self.help = ""
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59 for idx, path_elt in enumerate(self.path):
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60 try:
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61 self._cur_parser = arg_tools.get_cmd_choices(path_elt, self._cur_parser)
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62 except exceptions.NotFound:
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63 self.disp(_("bad command path"), error=True)
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64 self.path = self.path[:idx]
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65 break
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66 else:
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67 self.help = self._cur_parser
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68
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69 self.prompt = A.color(C.A_PROMPT_PATH, "/".join(self.path)) + A.color(
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70 C.A_PROMPT_SUF, "> "
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71 )
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72 try:
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73 self.actions = list(arg_tools.get_cmd_choices(parser=self._cur_parser).keys())
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74 except exceptions.NotFound:
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75 self.actions = []
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76
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77 def add_parser_options(self):
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78 pass
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79
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80 def format_args(self, args):
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81 """format argument to be printed with quotes if needed"""
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82 for arg in args:
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83 if " " in arg:
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84 yield arg_tools.escape(arg)
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85 else:
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86 yield arg
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87
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88 def run_cmd(self, args, external=False):
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89 """run command and retur exit code
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90
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91 @param args[list[string]]: arguments of the command
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92 must not include program name
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93 @param external(bool): True if it's an external command (i.e. not jp)
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94 @return (int): exit code (0 success, any other int failure)
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95 """
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96 # FIXME: we have to use subprocess
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97 # and relaunch whole python for now
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98 # because if host.quit() is called in D-Bus callback
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99 # GLib quit the whole app without possibility to stop it
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100 # didn't found a nice way to work around it so far
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101 # Situation should be better when we'll move away from python-dbus
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102 if self.verbose:
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103 self.disp(
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104 _("COMMAND {external}=> {args}").format(
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105 external=_("(external) ") if external else "",
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106 args=" ".join(self.format_args(args)),
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107 )
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108 )
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109 if not external:
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110 args = sys.argv[0:1] + args
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111 ret_code = subprocess.call(args)
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112 # XXX: below is a way to launch the command without creating a new process
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113 # may be used when a solution to the aforementioned issue is there
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114 # try:
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115 # self.host._run(args)
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116 # except SystemExit as e:
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117 # ret_code = e.code
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118 # except Exception as e:
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119 # self.disp(A.color(C.A_FAILURE, u'command failed with an exception: {msg}'.format(msg=e)), error=True)
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120 # ret_code = 1
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121 # else:
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122 # ret_code = 0
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123
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124 if ret_code != 0:
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125 self.disp(
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126 A.color(
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127 C.A_FAILURE,
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128 "command failed with an error code of {err_no}".format(
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129 err_no=ret_code
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130 ),
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131 ),
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132 error=True,
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133 )
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134 return ret_code
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135
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136 def default(self, args):
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137 """called when no shell command is recognized
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138
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139 will launch the command with args on the line
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140 (i.e. will launch do [args])
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141 """
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142 if args == "EOF":
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143 self.do_quit("")
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144 self.do_do(args)
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145
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146 def do_help(self, args):
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147 """show help message"""
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148 if not args:
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149 self.disp(A.color(C.A_HEADER, _("Shell commands:")), end=' ')
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150 super(Shell, self).do_help(args)
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151 if not args:
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152 self.disp(A.color(C.A_HEADER, _("Action commands:")))
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153 help_list = self._cur_parser.format_help().split("\n\n")
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154 print(("\n\n".join(help_list[1 if self.path else 2 :])))
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155
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156 # FIXME: debug crashes on exit and is not that useful,
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157 # keeping it until refactoring, may be removed entirely then
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158 # def do_debug(self, args):
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159 # """launch internal debugger"""
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160 # try:
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161 # import ipdb as pdb
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162 # except ImportError:
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163 # import pdb
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164 # pdb.set_trace()
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165
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166 def do_verbose(self, args):
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167 """show verbose mode, or (de)activate it"""
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168 args = self.parse_args(args)
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169 if args:
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170 self.verbose = C.bool(args[0])
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171 self.disp(
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172 _("verbose mode is {status}").format(
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173 status=_("ENABLED") if self.verbose else _("DISABLED")
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174 )
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175 )
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176
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177 def do_cmd(self, args):
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178 """change command path"""
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179 if args == "..":
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180 self.path = self.path[:-1]
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181 else:
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182 if not args or args[0] == "/":
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183 self.path = []
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184 args = "/".join(args.split())
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185 for path_elt in args.split("/"):
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186 path_elt = path_elt.strip()
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187 if not path_elt:
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188 continue
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189 self.path.append(path_elt)
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190 self.update_path()
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191
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192 def do_version(self, args):
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193 """show current SàT/jp version"""
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194 self.run_cmd(['--version'])
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195
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196 def do_shell(self, args):
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197 """launch an external command (you can use ![command] too)"""
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198 args = self.parse_args(args)
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199 self.run_cmd(args, external=True)
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200
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201 def do_do(self, args):
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202 """lauch a command"""
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203 args = self.parse_args(args)
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204 if (
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205 self._not_default_profile
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206 and not "-p" in args
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207 and not "--profile" in args
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208 and not "profile" in self.use
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209 ):
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210 # profile is not specified and we are not using the default profile
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211 # so we need to add it in arguments to use current user profile
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212 if self.verbose:
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213 self.disp(
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214 _("arg profile={profile} (logged profile)").format(
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215 profile=self.profile
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216 )
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217 )
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218 use = self.use.copy()
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219 use["profile"] = self.profile
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220 else:
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221 use = self.use
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222
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223 # args may be modified by use_args
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224 # to remove subparsers from it
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225 parser_args, use_args = arg_tools.get_use_args(
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226 self.host, args, use, verbose=self.verbose, parser=self._cur_parser
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227 )
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228 cmd_args = self.path + parser_args + use_args
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229 self.run_cmd(cmd_args)
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230
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231 def do_use(self, args):
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232 """fix an argument"""
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233 args = self.parse_args(args)
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234 if not args:
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235 if not self.use:
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236 self.disp(_("no argument in USE"))
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237 else:
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238 self.disp(_("arguments in USE:"))
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239 for arg, value in self.use.items():
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240 self.disp(
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241 _(
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diff changeset
242 A.color(
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243 C.A_SUBHEADER,
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244 arg,
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245 A.RESET,
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246 " = ",
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247 arg_tools.escape(value),
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248 )
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249 )
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250 )
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251 elif len(args) != 2:
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252 self.disp("bad syntax, please use:\nuse [arg] [value]", error=True)
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253 else:
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254 self.use[args[0]] = " ".join(args[1:])
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255 if self.verbose:
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256 self.disp(
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257 "set {name} = {value}".format(
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258 name=args[0], value=arg_tools.escape(args[1])
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259 )
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260 )
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261
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262 def do_use_clear(self, args):
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263 """unset one or many argument(s) in USE, or all of them if no arg is specified"""
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264 args = self.parse_args(args)
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265 if not args:
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266 self.use.clear()
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267 else:
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268 for arg in args:
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269 try:
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270 del self.use[arg]
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271 except KeyError:
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272 self.disp(
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273 A.color(
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274 C.A_FAILURE, _("argument {name} not found").format(name=arg)
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275 ),
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276 error=True,
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277 )
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278 else:
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279 if self.verbose:
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280 self.disp(_("argument {name} removed").format(name=arg))
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281
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282 def do_whoami(self, args):
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283 """print profile currently used"""
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284 self.disp(self.profile)
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285
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286 def do_quit(self, args):
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287 """quit the shell"""
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288 self.disp(_("good bye!"))
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289 self.host.quit()
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290
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291 def do_exit(self, args):
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292 """alias for quit"""
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293 self.do_quit(args)
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294
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295 async def start(self):
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296 # FIXME: "shell" is currently kept synchronous as it works well as it
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297 # and it will be refactored soon.
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298 default_profile = self.host.bridge.profileNameGet(C.PROF_KEY_DEFAULT)
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299 self._not_default_profile = self.profile != default_profile
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300 self.path = []
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301 self._cur_parser = self.host.parser
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302 self.use = {}
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303 self.verbose = False
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304 self.update_path()
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305 self.cmdloop(INTRO)