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annotate frontends/src/jp/cmd_shell.py @ 2310:5996063ecad7

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jp (shell): don't print header if a command is specified in help
author Goffi <goffi@goffi.org>
date Thu, 06 Jul 2017 20:31:31 +0200
parents c7a72b75232b
children a42a2478abd2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2309
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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) 2009-2016 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 from sat.core.i18n import _
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24 from sat.core import exceptions
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25 from sat_frontends.jp.constants import Const as C
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26 from sat.tools.common.ansi import ANSI as A
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27 import shlex
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28
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29 __commands__ = ["Shell"]
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30 INTRO = _(u"""Welcome to {app_name} shell, the Salut à Toi shell !
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31
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32 This enrironment helps you using several {app_name} commands with similar parameters.
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33
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34 To quit, just enter "quit" or press C-c.
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35 Enter "help" or "?" to know what to do
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36 """).format(app_name = C.APP_NAME)
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37
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38
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39 class Shell(base.CommandBase, cmd.Cmd):
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40
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41 def __init__(self, host):
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42 base.CommandBase.__init__(self, host, 'shell', help=_(u'launch jp in shell (REPL) mode'))
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43 cmd.Cmd.__init__(self)
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44
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45 def parse_args(self, args):
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46 """parse line arguments"""
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47 return shlex.split(args, posix=True)
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48
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49 def get_cmd_choices(self, cmd=None, parser=None):
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50 if parser is None:
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51 parser = self._cur_parser
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52 try:
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53 choices = parser._subparsers._group_actions[0].choices
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54 return choices[cmd] if cmd is not None else choices
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55 except (KeyError, AttributeError):
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56 raise exceptions.NotFound
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57
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58 def update_path(self):
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59 self._cur_parser = self.host.parser
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60 self.help = u''
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61 for idx, path_elt in enumerate(self.path):
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62 try:
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63 self._cur_parser = self.get_cmd_choices(path_elt)
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64 except exceptions.NotFound:
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65 self.disp(_(u'bad command path'), error=True)
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66 self.path=self.path[:idx]
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67 break
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68 else:
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69 self.help = self._cur_parser
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70
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71 self.prompt = A.color(C.A_PROMPT_PATH, u'/'.join(self.path)) + A.color(C.A_PROMPT_SUF, u'> ')
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72 try:
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73 self.actions = self.get_cmd_choices().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 escape_arg(self, arg):
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81 """format arg with quotes"""
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82 return u'"' + arg.replace(u'"',u'\\"') + u'"'
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83
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84 def format_args(self, args):
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85 """format argument to be printed with quotes if needed"""
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86 for arg in args:
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87 if " " in arg:
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88 yield self.escape_arg(arg)
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89 else:
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90 yield arg
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91
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92 def get_use_args(self, args):
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93 """format args for current parser according to self.use"""
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94 parser = self._cur_parser
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95
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96 # we check not optional args to see if there
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97 # is a corresonding parser
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98 # else USE args would not work correctly (only for current parser)
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99 cmd_args = []
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100 for arg in args:
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101 if arg.startswith(u'-'):
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102 break
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103 try:
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104 parser = self.get_cmd_choices(arg, parser)
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105 except exceptions.NotFound:
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106 break
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107 cmd_args.append(arg)
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108
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109 # we remove command args
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110 # they'll be in returned list (use_args)
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111 del args[:len(cmd_args)]
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112
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113 opt_args = []
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114 pos_args = []
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115 actions = {a.dest: a for a in parser._actions}
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116 for arg, value in self.use.iteritems():
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117 try:
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118 action = actions[arg]
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119 except KeyError:
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120 if self.verbose:
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121 self.disp(_(u'ignoring {name}={value}, not corresponding to any argument (in USE)').format(
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122 name=arg,
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123 value=self.escape_arg(value)))
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124 else:
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125 if self.verbose:
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126 self.disp(_(u'arg {name}={value} set (in USE)').format(name=arg, value=self.escape_arg(value)))
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127 if not action.option_strings:
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128 pos_args.append(value)
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129 else:
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130 opt_args.append(action.option_strings[0])
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131 opt_args.append(value)
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132 return cmd_args + opt_args + pos_args
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133
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134 def default(self, args):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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135 """called when no shell command is recognized
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136
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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diff changeset
137 will launch the command with args on the line
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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138 (i.e. will launch do [args])
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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139 """
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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140 self.do_do(args)
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141
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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diff changeset
142 def do_help(self, args):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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143 """show help message"""
2310
5996063ecad7 jp (shell): don't print header if a command is specified in help
Goffi <goffi@goffi.org>
parents: 2309
diff changeset
144 if not args:
5996063ecad7 jp (shell): don't print header if a command is specified in help
Goffi <goffi@goffi.org>
parents: 2309
diff changeset
145 self.disp(A.color(C.A_HEADER, _(u'Shell commands:')), no_lf=True)
2309
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146 super(Shell, self).do_help(args)
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147 if not args:
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148 self.disp(A.color(C.A_HEADER, _(u'Action commands:')))
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149 help_list = self._cur_parser.format_help().split('\n\n')
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150 print('\n\n'.join(help_list[1 if self.path else 2:]))
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151
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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diff changeset
152 def do_debug(self, args):
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153 """launch internal debugger"""
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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diff changeset
154 try:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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diff changeset
155 import ipdb as pdb
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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diff changeset
156 except ImportError:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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diff changeset
157 import pdb
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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158 pdb.set_trace()
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diff changeset
159
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
160 def do_verbose(self, args):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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diff changeset
161 """show verbose mode, or (de)activate it"""
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diff changeset
162 args = self.parse_args(args)
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
163 if args:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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diff changeset
164 self.verbose = C.bool(args[0])
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
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165 self.disp(_(u'verbose mode is {status}').format(
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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166 status = _(u'ENABLED') if self.verbose else _(u'DISABLED')))
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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167
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
168 def do_cmd(self, args):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
169 """change command path"""
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
170 if args == '..':
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
171 self.path = self.path[:-1]
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
172 else:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
173 if not args or args[0] == '/':
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
174 self.path = []
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
175 args = '/'.join(args.split())
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
176 for path_elt in args.split('/'):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
177 path_elt = path_elt.strip()
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
178 if not path_elt:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
179 continue
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
180 self.path.append(path_elt)
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
181 self.update_path()
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
182
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
183 def do_version(self, args):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
184 """show current SàT/jp version"""
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
185 try:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
186 self.host.run(['--version'])
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
187 except SystemExit:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
188 pass
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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diff changeset
189
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
190 def do_do(self, args):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
191 """lauch a command"""
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
192 # we don't want host to really exit
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
193 # we want to stay in the loop
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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diff changeset
194 self.host._no_exit = True
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
195 args = self.parse_args(args)
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
196 # args may be modified by use_args
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
197 # to remove subparsers from it
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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diff changeset
198 use_args = self.get_use_args(args)
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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diff changeset
199 cmd_args = self.path + use_args + args
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
200 if self.verbose:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
201 self.disp(u"COMMAND => {args}".format(args=u' '.join(self.format_args(cmd_args))))
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
202 try:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
203 self.host.run(cmd_args)
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
204 except SystemExit as e:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
205 if e.code != 0:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
206 self.disp(A.color(C.A_FAILURE, u'command failed with an error code of {err_no}'.format(err_no=e.code)), error=True)
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
207 except Exception as e:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
208 self.disp(A.color(C.A_FAILURE, u'command failed with an exception: {msg}'.format(msg=e)), error=True)
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
209 finally:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
210 self.host._no_exit = False
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
211
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
212 def do_use(self, args):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
213 """fix an argument"""
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
214 args = self.parse_args(args)
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
215 if not args:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
216 if not self.use:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
217 self.disp(_(u'no argument in USE'))
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
218 else:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
219 self.disp(_(u'arguments in USE:'))
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
220 for arg, value in self.use.iteritems():
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
221 self.disp(_(A.color(C.A_SUBHEADER, arg, A.RESET, u' = ', self.escape_arg(value))))
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
222 elif len(args) != 2:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
223 self.disp(u'bad syntax, please use:\nuse [arg] [value]', error=True)
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
224 else:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
225 self.use[args[0]] = u' '.join(args[1:])
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
226 if self.verbose:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
227 self.disp('set {name} = {value}'.format(
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
228 name = args[0], value=self.escape_arg(args[1])))
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
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parents:
diff changeset
229
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
230 def do_use_clear(self, args):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
231 """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
232 args = self.parse_args(args)
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
233 if not args:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
234 self.use.clear()
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
235 else:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
236 for arg in args:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
237 try:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
238 del self.use[arg]
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
239 except KeyError:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
240 self.disp(A.color(C.A_FAILURE, _(u'argument {name} not found').format(name=arg)), error=True)
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
241 else:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
242 if self.verbose:
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
243 self.disp(_(u'argument {name} removed').format(name=arg))
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
244
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
245 def do_quit(self, args):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
246 u"""quit the shell"""
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
247 self.disp(_(u'good bye!'))
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
248 self.host.quit()
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
249
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
250 def do_exit(self, args):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
251 u"""alias for quit"""
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
252 self.do_quit(args)
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
253
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
254 def start(self):
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
255 self.path = []
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
256 self._cur_parser = self.host.parser
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
257 self.use = {}
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
258 self.verbose = False
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
259 self.update_path()
c7a72b75232b jp (shell): shell command (REPL mode), first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
260 self.cmdloop(INTRO.encode('utf-8'))