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annotate sat_frontends/jp/cmd_shell.py @ 2766:93a421de0e3d

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tools (common/data_objects): metadata parsing in BlogItems: metadata are parsed to deserialise some well known values like rsm index and count, and some properties have been added to have easier access. A "complete" property (or item in metadata) is set to True if we are on the last page, False if we are not, or None if we don't have enough data to know if we are on the last page or not.
author Goffi <goffi@goffi.org>
date Fri, 11 Jan 2019 16:35:13 +0100
parents 56f94936df1e
children 003b8b4b56a7
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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) 2009-2018 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 base
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22 import cmd
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23 import sys
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24 from sat.core.i18n import _
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25 from sat.core import exceptions
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26 from sat_frontends.jp.constants import Const as C
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27 from sat_frontends.jp import arg_tools
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28 from sat.tools.common.ansi import ANSI as A
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29 import shlex
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30 import subprocess
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31
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32 __commands__ = ["Shell"]
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33 INTRO = _(
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34 u"""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", help=_(u"launch jp in shell (REPL) mode")
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48 )
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49 cmd.Cmd.__init__(self)
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50
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51 def parse_args(self, args):
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52 """parse line arguments"""
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53 return shlex.split(args, posix=True)
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54
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55 def update_path(self):
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56 self._cur_parser = self.host.parser
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57 self.help = u""
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58 for idx, path_elt in enumerate(self.path):
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59 try:
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60 self._cur_parser = arg_tools.get_cmd_choices(path_elt, self._cur_parser)
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61 except exceptions.NotFound:
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62 self.disp(_(u"bad command path"), error=True)
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63 self.path = self.path[:idx]
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64 break
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65 else:
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66 self.help = self._cur_parser
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67
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68 self.prompt = A.color(C.A_PROMPT_PATH, u"/".join(self.path)) + A.color(
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69 C.A_PROMPT_SUF, u"> "
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70 )
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71 try:
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72 self.actions = arg_tools.get_cmd_choices(parser=self._cur_parser).keys()
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73 except exceptions.NotFound:
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74 self.actions = []
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75
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76 def add_parser_options(self):
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77 pass
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78
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79 def format_args(self, args):
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80 """format argument to be printed with quotes if needed"""
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81 for arg in args:
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82 if " " in arg:
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83 yield arg_tools.escape(arg)
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84 else:
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85 yield arg
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86
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87 def run_cmd(self, args, external=False):
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88 """run command and retur exit code
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89
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90 @param args[list[string]]: arguments of the command
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91 must not include program name
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92 @param external(bool): True if it's an external command (i.e. not jp)
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93 @return (int): exit code (0 success, any other int failure)
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94 """
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95 # FIXME: we have to use subprocess
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96 # and relaunch whole python for now
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97 # because if host.quit() is called in D-Bus callback
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98 # GLib quit the whole app without possibility to stop it
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99 # didn't found a nice way to work around it so far
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100 # Situation should be better when we'll move away from python-dbus
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101 if self.verbose:
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102 self.disp(
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103 _(u"COMMAND {external}=> {args}").format(
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104 external=_(u"(external) ") if external else u"",
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105 args=u" ".join(self.format_args(args)),
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106 )
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107 )
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108 if not external:
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109 args = sys.argv[0:1] + args
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110 ret_code = subprocess.call(args)
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111 # XXX: below is a way to launch the command without creating a new process
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112 # may be used when a solution to the aforementioned issue is there
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113 # try:
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114 # self.host.run(args)
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115 # except SystemExit as e:
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116 # ret_code = e.code
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117 # except Exception as e:
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118 # self.disp(A.color(C.A_FAILURE, u'command failed with an exception: {msg}'.format(msg=e)), error=True)
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119 # ret_code = 1
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120 # else:
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121 # ret_code = 0
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122
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123 if ret_code != 0:
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124 self.disp(
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125 A.color(
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126 C.A_FAILURE,
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127 u"command failed with an error code of {err_no}".format(
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128 err_no=ret_code
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129 ),
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130 ),
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131 error=True,
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132 )
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133 return ret_code
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134
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135 def default(self, args):
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136 """called when no shell command is recognized
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137
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138 will launch the command with args on the line
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139 (i.e. will launch do [args])
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140 """
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141 if args == "EOF":
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142 self.do_quit("")
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143 self.do_do(args)
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144
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145 def do_help(self, args):
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146 """show help message"""
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147 if not args:
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148 self.disp(A.color(C.A_HEADER, _(u"Shell commands:")), no_lf=True)
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149 super(Shell, self).do_help(args)
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150 if not args:
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151 self.disp(A.color(C.A_HEADER, _(u"Action commands:")))
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152 help_list = self._cur_parser.format_help().split("\n\n")
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153 print("\n\n".join(help_list[1 if self.path else 2 :]))
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154
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155 def do_debug(self, args):
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156 """launch internal debugger"""
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157 try:
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158 import ipdb as pdb
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159 except ImportError:
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160 import pdb
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161 pdb.set_trace()
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162
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163 def do_verbose(self, args):
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164 """show verbose mode, or (de)activate it"""
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165 args = self.parse_args(args)
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166 if args:
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167 self.verbose = C.bool(args[0])
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168 self.disp(
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169 _(u"verbose mode is {status}").format(
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170 status=_(u"ENABLED") if self.verbose else _(u"DISABLED")
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171 )
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172 )
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173
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174 def do_cmd(self, args):
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175 """change command path"""
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176 if args == "..":
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177 self.path = self.path[:-1]
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178 else:
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179 if not args or args[0] == "/":
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180 self.path = []
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181 args = "/".join(args.split())
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182 for path_elt in args.split("/"):
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183 path_elt = path_elt.strip()
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184 if not path_elt:
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185 continue
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186 self.path.append(path_elt)
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187 self.update_path()
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188
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189 def do_version(self, args):
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190 """show current SàT/jp version"""
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191 try:
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192 self.host.run(["--version"])
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193 except SystemExit:
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194 pass
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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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diff changeset
211 # so we need to add it in arguments to use current user profile
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diff changeset
212 if self.verbose:
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diff changeset
213 self.disp(
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diff changeset
214 _(u"arg profile={profile} (logged profile)").format(
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215 profile=self.profile
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216 )
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diff changeset
217 )
2354
5129a0506739 jp (shell): fixed use of profile + added EOF handling:
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218 use = self.use.copy()
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219 use["profile"] = self.profile
2354
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diff changeset
220 else:
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diff changeset
221 use = self.use
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diff changeset
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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diff changeset
225 parser_args, use_args = arg_tools.get_use_args(
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diff changeset
226 self.host, args, use, verbose=self.verbose, parser=self._cur_parser
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diff changeset
227 )
2317
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
diff changeset
228 cmd_args = self.path + parser_args + use_args
2313
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parents: 2311
diff changeset
229 self.run_cmd(cmd_args)
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diff changeset
230
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
231 def do_use(self, args):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
232 """fix an argument"""
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diff changeset
233 args = self.parse_args(args)
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Goffi <goffi@goffi.org>
parents:
diff changeset
234 if not args:
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diff changeset
235 if not self.use:
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236 self.disp(_(u"no argument in USE"))
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237 else:
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238 self.disp(_(u"arguments in USE:"))
2309
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diff changeset
239 for arg, value in self.use.iteritems():
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diff changeset
240 self.disp(
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parents: 2562
diff changeset
241 _(
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parents: 2562
diff changeset
242 A.color(
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parents: 2562
diff changeset
243 C.A_SUBHEADER,
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parents: 2562
diff changeset
244 arg,
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parents: 2562
diff changeset
245 A.RESET,
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parents: 2562
diff changeset
246 u" = ",
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parents: 2562
diff changeset
247 arg_tools.escape(value),
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diff changeset
248 )
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249 )
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diff changeset
250 )
2309
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251 elif len(args) != 2:
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252 self.disp(u"bad syntax, please use:\nuse [arg] [value]", error=True)
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253 else:
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diff changeset
254 self.use[args[0]] = u" ".join(args[1:])
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255 if self.verbose:
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256 self.disp(
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diff changeset
257 "set {name} = {value}".format(
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diff changeset
258 name=args[0], value=arg_tools.escape(args[1])
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diff changeset
259 )
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diff changeset
260 )
2309
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diff changeset
261
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
262 def do_use_clear(self, args):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
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, _(u"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(_(u"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 u"""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 u"""quit the shell"""
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288 self.disp(_(u"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 u"""alias for quit"""
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293 self.do_quit(args)
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294
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295 def start(self):
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296 default_profile = self.host.bridge.profileNameGet(C.PROF_KEY_DEFAULT)
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297 self._not_default_profile = self.profile != default_profile
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298 self.path = []
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299 self._cur_parser = self.host.parser
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300 self.use = {}
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301 self.verbose = False
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302 self.update_path()
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303 self.cmdloop(INTRO.encode("utf-8"))