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annotate sat_frontends/jp/cmd_shell.py @ 3035:25af53e2990a

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install (setup.py): updated `python_requires`
author Goffi <goffi@goffi.org>
date Sun, 25 Aug 2019 09:53:03 +0200
parents ab2696e34d29
children fee60f17ebac
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # jp: a SàT command line tool
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5 # Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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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 from . 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 """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=_("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 = ""
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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(_("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, "/".join(self.path)) + A.color(
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69 C.A_PROMPT_SUF, "> "
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70 )
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71 try:
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72 self.actions = list(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 _("COMMAND {external}=> {args}").format(
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104 external=_("(external) ") if external else "",
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105 args=" ".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 "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, _("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, _("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 _("verbose mode is {status}").format(
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170 status=_("ENABLED") if self.verbose else _("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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diff changeset
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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diff changeset
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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diff changeset
199 self.run_cmd(args, external=True)
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diff changeset
200
2309
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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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diff changeset
206 and not "-p" in args
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207 and not "--profile" in args
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diff changeset
208 and not "profile" in self.use
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diff changeset
209 ):
2354
5129a0506739 jp (shell): fixed use of profile + added EOF handling:
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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
5129a0506739 jp (shell): fixed use of profile + added EOF handling:
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diff changeset
212 if self.verbose:
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diff changeset
213 self.disp(
3028
ab2696e34d29 Python 3 port:
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diff changeset
214 _("arg profile={profile} (logged profile)").format(
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diff changeset
215 profile=self.profile
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diff changeset
216 )
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diff changeset
217 )
2354
5129a0506739 jp (shell): fixed use of profile + added EOF handling:
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diff changeset
218 use = self.use.copy()
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diff changeset
219 use["profile"] = self.profile
2354
5129a0506739 jp (shell): fixed use of profile + added EOF handling:
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parents: 2317
diff changeset
220 else:
5129a0506739 jp (shell): fixed use of profile + added EOF handling:
Goffi <goffi@goffi.org>
parents: 2317
diff changeset
221 use = self.use
5129a0506739 jp (shell): fixed use of profile + added EOF handling:
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parents: 2317
diff changeset
222
2309
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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
6ff5212997c7 jp (shell): use of subprocess instead of running commands in the same process:
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parents: 2311
diff changeset
229 self.run_cmd(cmd_args)
2309
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parents:
diff changeset
230
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
231 def do_use(self, args):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
232 """fix an argument"""
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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diff changeset
233 args = self.parse_args(args)
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
234 if not args:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
235 if not self.use:
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diff changeset
236 self.disp(_("no argument in USE"))
2309
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diff changeset
237 else:
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diff changeset
238 self.disp(_("arguments in USE:"))
ab2696e34d29 Python 3 port:
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parents: 2771
diff changeset
239 for arg, value in self.use.items():
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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(
56f94936df1e code style reformatting using black
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parents: 2562
diff changeset
243 C.A_SUBHEADER,
56f94936df1e code style reformatting using black
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parents: 2562
diff changeset
244 arg,
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diff changeset
245 A.RESET,
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ab2696e34d29 Python 3 port:
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parents: 2771
diff changeset
246 " = ",
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diff changeset
247 arg_tools.escape(value),
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diff changeset
248 )
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parents: 2562
diff changeset
249 )
56f94936df1e code style reformatting using black
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parents: 2562
diff changeset
250 )
2309
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
251 elif len(args) != 2:
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diff changeset
252 self.disp("bad syntax, please use:\nuse [arg] [value]", error=True)
2309
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
253 else:
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diff changeset
254 self.use[args[0]] = " ".join(args[1:])
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diff changeset
255 if self.verbose:
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diff changeset
256 self.disp(
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diff changeset
257 "set {name} = {value}".format(
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parents: 2562
diff changeset
258 name=args[0], value=arg_tools.escape(args[1])
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parents: 2562
diff changeset
259 )
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parents: 2562
diff changeset
260 )
2309
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parents:
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"""
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
264 args = self.parse_args(args)
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
265 if not args:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
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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 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"))