Mercurial > libervia-backend
annotate src/plugins/plugin_misc_text_commands.py @ 2098:e0066920a661
primitivus, jp: dynamic bridge + fixed D-Bus bridge:
Primitivus and jp can now load the bridge specified in sat.conf, but they are only working with D-Bus so far (need to change all sync calls to async).
Exit code 3 is used for Bridge init error.
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sun, 18 Dec 2016 16:28:51 +0100 |
| parents | ed33cd382bf9 |
| children | 98672e35d2f5 |
| 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 # SàT plugin for managing text commands |
| 1766 | 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 |
| 771 | 20 from sat.core.i18n import _ |
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21 from sat.core.constants import Const as C |
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22 from sat.core import exceptions |
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23 from twisted.words.protocols.jabber import jid |
| 921 | 24 from twisted.internet import defer |
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25 from sat.core.log import getLogger |
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26 log = getLogger(__name__) |
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27 from twisted.python import failure |
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28 from collections import OrderedDict |
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29 |
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30 PLUGIN_INFO = { |
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31 "name": "Text commands", |
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32 "import_name": C.TEXT_CMDS, |
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33 "type": "Misc", |
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34 "protocols": ["XEP-0245"], |
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35 "dependencies": [], |
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36 "main": "TextCommands", |
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37 "handler": "no", |
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38 "description": _("""IRC like text commands""") |
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39 } |
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40 |
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41 |
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42 class InvalidCommandSyntax(Exception): |
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43 """Throwed while parsing @command in docstring if syntax is invalid""" |
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44 pass |
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45 |
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46 |
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47 CMD_KEY = "@command" |
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48 CMD_TYPES = ('group', 'one2one', 'all') |
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49 FEEDBACK_INFO_TYPE = "TEXT_CMD" |
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50 |
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51 |
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52 class TextCommands(object): |
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53 #FIXME: doc strings for commands have to be translatable |
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54 # plugins need a dynamic translation system (translation |
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55 # should be downloadable independently) |
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56 |
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57 HELP_SUGGESTION = _("Type '/help' to get a list of the available commands. If you didn't want to use a command, please start your message with '//' to escape the slash.") |
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58 |
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59 def __init__(self, host): |
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60 log.info(_("Text commands initialization")) |
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61 self.host = host |
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62 host.trigger.add("messageSend", self.messageSendTrigger) |
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63 self._commands = {} |
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64 self._whois = [] |
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65 self.registerTextCommands(self) |
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66 |
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67 def _parseDocString(self, cmd, cmd_name): |
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68 """Parse a docstring to get text command data |
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69 |
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70 @param cmd: function or method callback for the command, |
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71 its docstring will be used for self documentation in the following way: |
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72 - first line is the command short documentation, shown with /help |
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73 - @command keyword can be used, see http://wiki.goffi.org/wiki/Coding_style/en for documentation |
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74 @return (dict): dictionary with parsed data where key can be: |
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75 - "doc_short_help" (default: ""): the untranslated short documentation |
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76 - "type" (default "all"): the command type as specified in documentation |
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77 - "args" (default: ""): the arguments available, using syntax specified in documentation. |
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78 - "doc_arg_[name]": the doc of [name] argument |
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79 """ |
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80 data = OrderedDict([('doc_short_help', ""), |
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81 ('type', 'all'), |
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82 ('args', '')]) |
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83 docstring = cmd.__doc__ |
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84 if docstring is None: |
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85 log.warning(u"Not docstring found for command {}".format(cmd_name)) |
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86 docstring = "" |
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87 |
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88 doc_data = docstring.split("\n") |
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89 data["doc_short_help"] = doc_data[0] |
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90 |
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91 try: |
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92 cmd_indent = 0 # >0 when @command is found are we are parsing it |
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93 |
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94 for line in doc_data: |
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95 stripped = line.strip() |
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96 if cmd_indent and line[cmd_indent:cmd_indent+5] == " -": |
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97 colon_idx = line.find(":") |
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98 if colon_idx == -1: |
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99 raise InvalidCommandSyntax("No colon found in argument description") |
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100 arg_name = line[cmd_indent+6:colon_idx].strip() |
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101 if not arg_name: |
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102 raise InvalidCommandSyntax("No name found in argument description") |
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103 arg_help = line[colon_idx+1:].strip() |
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104 data["doc_arg_{}".format(arg_name)] = arg_help |
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105 elif cmd_indent: |
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106 # we are parsing command and indent level is not good, it's finished |
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107 break |
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108 elif stripped.startswith(CMD_KEY): |
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109 cmd_indent = line.find(CMD_KEY) |
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110 |
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111 # type |
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112 colon_idx = stripped.find(":") |
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113 if colon_idx == -1: |
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114 raise InvalidCommandSyntax("missing colon") |
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115 type_data = stripped[len(CMD_KEY):colon_idx].strip() |
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116 if len(type_data) == 0: |
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117 type_data="(all)" |
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118 elif len(type_data) <= 2 or type_data[0] != '(' or type_data[-1] != ')': |
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119 raise InvalidCommandSyntax("Bad type data syntax") |
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120 type_ = type_data[1:-1] |
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121 if type_ not in CMD_TYPES: |
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122 raise InvalidCommandSyntax("Unknown type {}".format(type_)) |
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123 data["type"] = type_ |
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124 |
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125 #args |
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126 data["args"] = stripped[colon_idx+1:].strip() |
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127 except InvalidCommandSyntax as e: |
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128 log.warning(u"Invalid command syntax for command {command}: {message}".format(command=cmd_name, message=e.message)) |
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129 |
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130 return data |
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131 |
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132 |
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133 def registerTextCommands(self, instance): |
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134 """ Add a text command |
|
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135 |
|
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136 @param instance: instance of a class containing text commands |
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137 """ |
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138 for attr in dir(instance): |
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139 if attr.startswith('cmd_'): |
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140 cmd = getattr(instance, attr) |
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141 if not callable(cmd): |
|
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142 log.warning(_(u"Skipping not callable [%s] attribute") % attr) |
|
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143 continue |
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144 cmd_name = attr[4:] |
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145 if not cmd_name: |
|
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146 log.warning(_("Skipping cmd_ method")) |
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147 if cmd_name in self._commands: |
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148 suff=2 |
|
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149 while (cmd_name + str(suff)) in self._commands: |
|
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150 suff+=1 |
|
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151 new_name = cmd_name + str(suff) |
|
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152 log.warning(_(u"Conflict for command [{old_name}], renaming it to [{new_name}]").format(old_name=cmd_name, new_name=new_name)) |
|
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153 cmd_name = new_name |
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154 self._commands[cmd_name] = cmd_data = OrderedDict({'callback':cmd}) # We use an Ordered dict to keep documenation order |
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155 cmd_data.update(self._parseDocString(cmd, cmd_name)) |
|
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156 log.info(_("Registered text command [%s]") % cmd_name) |
|
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157 |
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158 def addWhoIsCb(self, callback, priority=0): |
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159 """Add a callback which give information to the /whois command |
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160 |
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161 @param callback: a callback which will be called with the following arguments |
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162 - whois_msg: list of information strings to display, callback need to append its own strings to it |
| 1199 | 163 - target_jid: full jid from whom we want information |
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164 - profile: %(doc_profile)s |
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165 @param priority: priority of the information to show (the highest priority will be displayed first) |
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166 """ |
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167 self._whois.append((priority, callback)) |
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168 self._whois.sort(key=lambda item: item[0], reverse=True) |
|
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169 |
|
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170 def messageSendTrigger(self, client, mess_data, pre_xml_treatments, post_xml_treatments): |
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171 """Install SendMessage command hook """ |
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172 pre_xml_treatments.addCallback(self._messageSendCmdHook, client) |
| 921 | 173 return True |
| 174 | |
|
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175 def _messageSendCmdHook(self, mess_data, client): |
| 921 | 176 """ Check text commands in message, and react consequently |
|
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177 |
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178 msg starting with / are potential command. If a command is found, it is executed, else and help message is sent |
| 921 | 179 msg starting with // are escaped: they are sent with a single / |
| 180 commands can abord message sending (if they return anything evaluating to False), or continue it (if they return True), eventually after modifying the message | |
| 181 an "unparsed" key is added to message, containing part of the message not yet parsed | |
| 182 commands can be deferred or not | |
|
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183 @param mess_data(dict): data comming from messageSend trigger |
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184 @param profile: %(doc_profile)s |
| 921 | 185 """ |
|
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186 try: |
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187 msg = mess_data["message"][''] |
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188 msg_lang = '' |
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189 except KeyError: |
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190 try: |
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191 # we have not default message, we try to take the first found |
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192 msg_lang, msg = mess_data["message"].iteritems().next() |
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193 except StopIteration: |
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194 log.debug(u"No message found, skipping text commands") |
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195 return mess_data |
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196 |
| 921 | 197 try: |
| 198 if msg[:2] == '//': | |
| 199 # we have a double '/', it's the escape sequence | |
|
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200 mess_data["message"][msg_lang] = msg[1:] |
| 921 | 201 return mess_data |
| 202 if msg[0] != '/': | |
| 203 return mess_data | |
| 204 except IndexError: | |
| 205 return mess_data | |
| 206 | |
| 207 # we have a command | |
| 208 d = None | |
| 209 command = msg[1:].partition(' ')[0].lower() | |
| 210 if command.isalpha(): | |
| 211 # looks like an actual command, we try to call the corresponding method | |
| 212 def retHandling(ret): | |
| 213 """ Handle command return value: | |
| 214 if ret is True, normally send message (possibly modified by command) | |
| 215 else, abord message sending | |
| 216 """ | |
| 217 if ret: | |
| 218 return mess_data | |
| 219 else: | |
|
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220 log.debug(u"text command detected ({})".format(command)) |
|
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221 raise failure.Failure(exceptions.CancelError()) |
| 921 | 222 |
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223 def genericErrback(failure): |
|
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224 try: |
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225 msg = u"with condition {}".format(failure.value.condition) |
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226 except AttributeError: |
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227 msg = u"with error {}".format(failure.value) |
|
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228 self.feedBack(client, u"Command failed {}".format(msg), mess_data) |
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229 return False |
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230 |
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231 mess_data["unparsed"] = msg[1 + len(command):] # part not yet parsed of the message |
| 921 | 232 try: |
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233 cmd_data = self._commands[command] |
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234 except KeyError: |
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235 self.feedBack(client, _("Unknown command /%s. ") % command + self.HELP_SUGGESTION, mess_data) |
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236 log.debug("text command help message") |
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237 raise failure.Failure(exceptions.CancelError()) |
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238 else: |
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239 if not self._contextValid(mess_data, cmd_data): |
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240 # The command is not launched in the right context, we throw a message with help instructions |
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241 context_txt = _("group discussions") if cmd_data["type"] == "group" else _("one to one discussions") |
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242 feedback = _("/{command} command only applies in {context}.").format(command=command, context=context_txt) |
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243 self.feedBack(client, u"{} {}".format(feedback, self.HELP_SUGGESTION), mess_data) |
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244 log.debug("text command invalid message") |
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245 raise failure.Failure(exceptions.CancelError()) |
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246 else: |
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247 d = defer.maybeDeferred(cmd_data["callback"], client, mess_data) |
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248 d.addErrback(genericErrback) |
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249 d.addCallback(retHandling) |
| 921 | 250 |
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251 return d or mess_data # if a command is detected, we should have a deferred, else we send the message normally |
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252 |
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253 def _contextValid(self, mess_data, cmd_data): |
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254 """Tell if a command can be used in the given context |
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255 |
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256 @param mess_data(dict): message data as given in messageSend trigger |
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257 @param cmd_data(dict): command data as returned by self._parseDocString |
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258 @return (bool): True if command can be used in this context |
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259 """ |
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260 if ((cmd_data['type'] == "group" and mess_data["type"] != "groupchat") or |
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261 (cmd_data['type'] == 'one2one' and mess_data["type"] == "groupchat")): |
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262 return False |
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263 return True |
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264 |
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265 def getRoomJID(self, arg, service_jid): |
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266 """Return a room jid with a shortcut |
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267 |
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268 @param arg: argument: can be a full room jid (e.g.: sat@chat.jabberfr.org) |
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269 or a shortcut (e.g.: sat or sat@ for sat on current service) |
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270 @param service_jid: jid of the current service (e.g.: chat.jabberfr.org) |
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271 """ |
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272 nb_arobas = arg.count('@') |
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273 if nb_arobas == 1: |
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274 if arg[-1] != '@': |
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275 return jid.JID(arg) |
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276 return jid.JID(arg + service_jid) |
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277 return jid.JID(u"%s@%s" % (arg, service_jid)) |
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278 |
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279 def feedBack(self, client, message, mess_data, info_type=FEEDBACK_INFO_TYPE): |
|
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280 """Give a message back to the user""" |
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281 if mess_data["type"] == 'groupchat': |
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282 to_ = mess_data["to"].userhostJID() |
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283 else: |
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284 to_ = client.jid |
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285 |
|
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286 # we need to invert send message back, so sender need to original destinee |
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287 mess_data["from"] = mess_data["to"] |
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288 mess_data["to"] = to_ |
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289 mess_data["type"] = C.MESS_TYPE_INFO |
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290 mess_data["message"] = {'': message} |
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291 mess_data["extra"]["info_type"] = info_type |
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292 self.host.messageSendToBridge(mess_data, client) |
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293 |
|
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294 def cmd_whois(self, client, mess_data): |
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295 """show informations on entity |
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296 |
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297 @command: [JID|ROOM_NICK] |
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298 - JID: entity to request |
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299 - ROOM_NICK: nick of the room to request |
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300 """ |
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301 log.debug("Catched whois command") |
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302 |
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303 entity = mess_data["unparsed"].strip() |
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304 |
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305 if mess_data['type'] == "groupchat": |
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306 room = mess_data["to"].userhostJID() |
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307 try: |
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308 if self.host.plugins["XEP-0045"].isNickInRoom(client, room, entity): |
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309 entity = u"%s/%s" % (room, entity) |
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310 except KeyError: |
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311 log.warning("plugin XEP-0045 is not present") |
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312 |
|
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313 if not entity: |
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314 target_jid = mess_data["to"] |
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315 else: |
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316 try: |
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317 target_jid = jid.JID(entity) |
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318 if not target_jid.user or not target_jid.host: |
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319 raise jid.InvalidFormat |
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320 except (RuntimeError, jid.InvalidFormat, AttributeError): |
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321 self.feedBack(client, _("Invalid jid, can't whois"), mess_data) |
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322 return False |
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323 |
| 921 | 324 if not target_jid.resource: |
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325 target_jid.resource = self.host.memory.getMainResource(client, target_jid) |
| 921 | 326 |
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327 whois_msg = [_(u"whois for %(jid)s") % {'jid': target_jid}] |
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328 |
|
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329 d = defer.succeed(None) |
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330 for ignore, callback in self._whois: |
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331 d.addCallback(lambda ignore: callback(client, whois_msg, mess_data, target_jid)) |
| 921 | 332 |
| 333 def feedBack(ignore): | |
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|
334 self.feedBack(client, u"\n".join(whois_msg), mess_data) |
| 921 | 335 return False |
| 336 | |
| 337 d.addCallback(feedBack) | |
| 338 return d | |
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339 |
|
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340 def _getArgsHelp(self, cmd_data): |
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341 """Return help string for args of cmd_name, according to docstring data |
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342 |
|
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343 @param cmd_data: command data |
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344 @return (list[unicode]): help strings |
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345 """ |
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346 strings = [] |
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347 for doc_name, doc_help in cmd_data.iteritems(): |
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348 if doc_name.startswith("doc_arg_"): |
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349 arg_name = doc_name[8:] |
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350 strings.append(u"- {name}: {doc_help}".format(name=arg_name, doc_help=_(doc_help))) |
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351 |
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352 return strings |
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353 |
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354 def cmd_me(self, client, mess_data): |
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355 """display a message at third person |
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356 |
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357 @command (all): message |
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358 - message: message to show at third person |
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359 e.g.: "/me clenches his fist" will give "[YOUR_NICK] clenches his fist" |
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360 """ |
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361 # We just ignore the command as the match is done on receiption by clients |
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362 return True |
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363 |
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364 def cmd_help(self, client, mess_data): |
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365 """show help on available commands |
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366 |
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367 @command: [cmd_name] |
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368 - cmd_name: name of the command for detailed help |
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369 """ |
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370 cmd_name = mess_data["unparsed"].strip() |
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371 if cmd_name and cmd_name[0] == "/": |
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372 cmd_name = cmd_name[1:] |
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373 if cmd_name and cmd_name not in self._commands: |
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374 self.feedBack(client, _(u"Invalid command name [{}]\n".format(cmd_name)), mess_data) |
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375 cmd_name = "" |
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376 if not cmd_name: |
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377 # we show the global help |
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378 longuest = max([len(command) for command in self._commands]) |
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379 help_cmds = [] |
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380 |
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381 for command in sorted(self._commands): |
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382 cmd_data = self._commands[command] |
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383 if not self._contextValid(mess_data, cmd_data): |
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384 continue |
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385 spaces = (longuest - len(command)) * ' ' |
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386 help_cmds.append(" /{command}: {spaces} {short_help}".format( |
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387 command=command, |
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388 spaces=spaces, |
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389 short_help=cmd_data["doc_short_help"] |
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390 )) |
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391 |
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392 help_mess = _(u"Text commands available:\n%s") % (u'\n'.join(help_cmds), ) |
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393 else: |
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394 # we show detailled help for a command |
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395 cmd_data = self._commands[cmd_name] |
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396 syntax = cmd_data["args"] |
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397 help_mess = _(u"/{name}: {short_help}\n{syntax}{args_help}").format( |
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398 name=cmd_name, |
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399 short_help=cmd_data['doc_short_help'], |
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400 syntax=_(" "*4+"syntax: {}\n").format(syntax) if syntax else "", |
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401 args_help=u'\n'.join([u" "*8+"{}".format(line) for line in self._getArgsHelp(cmd_data)])) |
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402 |
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403 self.feedBack(client, help_mess, mess_data) |