Mercurial > libervia-backend
annotate sat/plugins/plugin_misc_text_commands.py @ 2971:dbf24ba40396 0.7.0b3
0.7.0b3 release
author | Goffi <goffi@goffi.org> |
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date | Thu, 27 Jun 2019 20:27:34 +0200 |
parents | dbfedde9bc61 |
children | ab2696e34d29 |
rev | line source |
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1934
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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 |
2771 | 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 |
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 |
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27 log = getLogger(__name__) |
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28 from twisted.python import failure |
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29 from collections import OrderedDict |
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30 |
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31 PLUGIN_INFO = { |
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32 C.PI_NAME: "Text commands", |
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33 C.PI_IMPORT_NAME: C.TEXT_CMDS, |
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34 C.PI_TYPE: "Misc", |
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35 C.PI_PROTOCOLS: ["XEP-0245"], |
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36 C.PI_DEPENDENCIES: [], |
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37 C.PI_MAIN: "TextCommands", |
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38 C.PI_HANDLER: "no", |
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39 C.PI_DESCRIPTION: _("""IRC like text commands"""), |
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40 } |
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41 |
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42 |
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43 class InvalidCommandSyntax(Exception): |
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44 """Throwed while parsing @command in docstring if syntax is invalid""" |
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45 |
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46 pass |
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47 |
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48 |
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49 CMD_KEY = "@command" |
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50 CMD_TYPES = ("group", "one2one", "all") |
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51 FEEDBACK_INFO_TYPE = "TEXT_CMD" |
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52 |
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53 |
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54 class TextCommands(object): |
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55 # FIXME: doc strings for commands have to be translatable |
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56 # plugins need a dynamic translation system (translation |
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57 # should be downloadable independently) |
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58 |
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59 HELP_SUGGESTION = _( |
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60 u"Type '/help' to get a list of the available commands. If you didn't want to " |
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61 u"use a command, please start your message with '//' to escape the slash." |
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62 ) |
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63 |
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64 def __init__(self, host): |
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65 log.info(_("Text commands initialization")) |
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66 self.host = host |
2128 | 67 # this is internal command, so we set high priority |
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68 host.trigger.add("sendMessage", self.sendMessageTrigger, priority=1000000) |
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69 self._commands = {} |
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70 self._whois = [] |
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71 self.registerTextCommands(self) |
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72 |
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73 def _parseDocString(self, cmd, cmd_name): |
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74 """Parse a docstring to get text command data |
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75 |
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76 @param cmd: function or method callback for the command, |
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77 its docstring will be used for self documentation in the following way: |
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78 - first line is the command short documentation, shown with /help |
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79 - @command keyword can be used, |
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80 see http://wiki.goffi.org/wiki/Coding_style/en for documentation |
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81 @return (dict): dictionary with parsed data where key can be: |
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82 - "doc_short_help" (default: ""): the untranslated short documentation |
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83 - "type" (default "all"): the command type as specified in documentation |
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84 - "args" (default: ""): the arguments available, using syntax specified in documentation. |
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85 - "doc_arg_[name]": the doc of [name] argument |
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86 """ |
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87 data = OrderedDict([("doc_short_help", ""), ("type", "all"), ("args", "")]) |
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88 docstring = cmd.__doc__ |
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89 if docstring is None: |
2842 | 90 log.warning(u"No docstring found for command {}".format(cmd_name)) |
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91 docstring = "" |
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92 |
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93 doc_data = docstring.split("\n") |
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94 data["doc_short_help"] = doc_data[0] |
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95 |
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96 try: |
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97 cmd_indent = 0 # >0 when @command is found are we are parsing it |
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98 |
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99 for line in doc_data: |
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100 stripped = line.strip() |
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101 if cmd_indent and line[cmd_indent : cmd_indent + 5] == " -": |
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102 colon_idx = line.find(":") |
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103 if colon_idx == -1: |
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104 raise InvalidCommandSyntax( |
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105 "No colon found in argument description" |
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106 ) |
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107 arg_name = line[cmd_indent + 6 : colon_idx].strip() |
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108 if not arg_name: |
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109 raise InvalidCommandSyntax( |
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110 "No name found in argument description" |
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111 ) |
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112 arg_help = line[colon_idx + 1 :].strip() |
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113 data["doc_arg_{}".format(arg_name)] = arg_help |
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114 elif cmd_indent: |
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115 # we are parsing command and indent level is not good, it's finished |
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116 break |
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117 elif stripped.startswith(CMD_KEY): |
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118 cmd_indent = line.find(CMD_KEY) |
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119 |
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120 # type |
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121 colon_idx = stripped.find(":") |
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122 if colon_idx == -1: |
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123 raise InvalidCommandSyntax("missing colon") |
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124 type_data = stripped[len(CMD_KEY) : colon_idx].strip() |
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125 if len(type_data) == 0: |
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126 type_data = "(all)" |
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127 elif ( |
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128 len(type_data) <= 2 or type_data[0] != "(" or type_data[-1] != ")" |
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129 ): |
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130 raise InvalidCommandSyntax("Bad type data syntax") |
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131 type_ = type_data[1:-1] |
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132 if type_ not in CMD_TYPES: |
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133 raise InvalidCommandSyntax("Unknown type {}".format(type_)) |
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134 data["type"] = type_ |
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135 |
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136 # args |
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137 data["args"] = stripped[colon_idx + 1 :].strip() |
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138 except InvalidCommandSyntax as e: |
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139 log.warning( |
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140 u"Invalid command syntax for command {command}: {message}".format( |
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141 command=cmd_name, message=e.message |
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142 ) |
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143 ) |
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144 |
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145 return data |
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146 |
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147 def registerTextCommands(self, instance): |
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148 """ Add a text command |
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149 |
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150 @param instance: instance of a class containing text commands |
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151 """ |
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152 for attr in dir(instance): |
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153 if attr.startswith("cmd_"): |
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154 cmd = getattr(instance, attr) |
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155 if not callable(cmd): |
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156 log.warning(_(u"Skipping not callable [%s] attribute") % attr) |
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157 continue |
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158 cmd_name = attr[4:] |
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159 if not cmd_name: |
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160 log.warning(_("Skipping cmd_ method")) |
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161 if cmd_name in self._commands: |
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162 suff = 2 |
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163 while (cmd_name + str(suff)) in self._commands: |
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164 suff += 1 |
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165 new_name = cmd_name + str(suff) |
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166 log.warning( |
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167 _( |
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168 u"Conflict for command [{old_name}], renaming it to [{new_name}]" |
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169 ).format(old_name=cmd_name, new_name=new_name) |
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170 ) |
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171 cmd_name = new_name |
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172 self._commands[cmd_name] = cmd_data = OrderedDict( |
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173 {"callback": cmd} |
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174 ) # We use an Ordered dict to keep documenation order |
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175 cmd_data.update(self._parseDocString(cmd, cmd_name)) |
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176 log.info(_("Registered text command [%s]") % cmd_name) |
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177 |
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178 def addWhoIsCb(self, callback, priority=0): |
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179 """Add a callback which give information to the /whois command |
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180 |
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181 @param callback: a callback which will be called with the following arguments |
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182 - whois_msg: list of information strings to display, callback need to append |
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183 its own strings to it |
1199 | 184 - target_jid: full jid from whom we want information |
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185 - profile: %(doc_profile)s |
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186 @param priority: priority of the information to show (the highest priority will |
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187 be displayed first) |
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188 """ |
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189 self._whois.append((priority, callback)) |
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190 self._whois.sort(key=lambda item: item[0], reverse=True) |
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191 |
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192 def sendMessageTrigger( |
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193 self, client, mess_data, pre_xml_treatments, post_xml_treatments |
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194 ): |
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195 """Install SendMessage command hook """ |
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196 pre_xml_treatments.addCallback(self._sendMessageCmdHook, client) |
921 | 197 return True |
198 | |
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199 def _sendMessageCmdHook(self, mess_data, client): |
921 | 200 """ Check text commands in message, and react consequently |
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201 |
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202 msg starting with / are potential command. If a command is found, it is executed, |
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203 else an help message is sent. |
921 | 204 msg starting with // are escaped: they are sent with a single / |
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205 commands can abord message sending (if they return anything evaluating to False), |
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206 or continue it (if they return True), eventually after modifying the message |
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207 an "unparsed" key is added to message, containing part of the message not yet |
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208 parsed. |
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209 Commands can be deferred or not |
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210 @param mess_data(dict): data comming from sendMessage trigger |
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211 @param profile: %(doc_profile)s |
921 | 212 """ |
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213 try: |
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214 msg = mess_data["message"][""] |
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215 msg_lang = "" |
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216 except KeyError: |
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217 try: |
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218 # we have not default message, we try to take the first found |
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219 msg_lang, msg = mess_data["message"].iteritems().next() |
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220 except StopIteration: |
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221 log.debug(u"No message found, skipping text commands") |
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222 return mess_data |
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223 |
921 | 224 try: |
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225 if msg[:2] == "//": |
921 | 226 # we have a double '/', it's the escape sequence |
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227 mess_data["message"][msg_lang] = msg[1:] |
921 | 228 return mess_data |
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229 if msg[0] != "/": |
921 | 230 return mess_data |
231 except IndexError: | |
232 return mess_data | |
233 | |
234 # we have a command | |
235 d = None | |
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236 command = msg[1:].partition(" ")[0].lower() |
921 | 237 if command.isalpha(): |
238 # looks like an actual command, we try to call the corresponding method | |
239 def retHandling(ret): | |
240 """ Handle command return value: | |
241 if ret is True, normally send message (possibly modified by command) | |
242 else, abord message sending | |
243 """ | |
244 if ret: | |
245 return mess_data | |
246 else: | |
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247 log.debug(u"text command detected ({})".format(command)) |
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248 raise failure.Failure(exceptions.CancelError()) |
921 | 249 |
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250 def genericErrback(failure): |
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251 try: |
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252 msg = u"with condition {}".format(failure.value.condition) |
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253 except AttributeError: |
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254 msg = u"with error {}".format(failure.value) |
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255 self.feedBack(client, u"Command failed {}".format(msg), mess_data) |
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256 return False |
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257 |
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258 mess_data["unparsed"] = msg[ |
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259 1 + len(command) : |
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260 ] # part not yet parsed of the message |
921 | 261 try: |
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262 cmd_data = self._commands[command] |
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263 except KeyError: |
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264 self.feedBack( |
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265 client, |
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266 _("Unknown command /%s. ") % command + self.HELP_SUGGESTION, |
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267 mess_data, |
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268 ) |
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269 log.debug("text command help message") |
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270 raise failure.Failure(exceptions.CancelError()) |
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271 else: |
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272 if not self._contextValid(mess_data, cmd_data): |
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273 # The command is not launched in the right context, we throw a message with help instructions |
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274 context_txt = ( |
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275 _("group discussions") |
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276 if cmd_data["type"] == "group" |
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277 else _("one to one discussions") |
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278 ) |
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279 feedback = _("/{command} command only applies in {context}.").format( |
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280 command=command, context=context_txt |
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281 ) |
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282 self.feedBack( |
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283 client, u"{} {}".format(feedback, self.HELP_SUGGESTION), mess_data |
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284 ) |
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285 log.debug("text command invalid message") |
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286 raise failure.Failure(exceptions.CancelError()) |
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287 else: |
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288 d = defer.maybeDeferred(cmd_data["callback"], client, mess_data) |
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289 d.addErrback(genericErrback) |
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290 d.addCallback(retHandling) |
921 | 291 |
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292 return ( |
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293 d or mess_data |
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294 ) # if a command is detected, we should have a deferred, else we send the message normally |
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295 |
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296 def _contextValid(self, mess_data, cmd_data): |
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297 """Tell if a command can be used in the given context |
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298 |
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299 @param mess_data(dict): message data as given in sendMessage trigger |
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300 @param cmd_data(dict): command data as returned by self._parseDocString |
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301 @return (bool): True if command can be used in this context |
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302 """ |
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303 if (cmd_data["type"] == "group" and mess_data["type"] != "groupchat") or ( |
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304 cmd_data["type"] == "one2one" and mess_data["type"] == "groupchat" |
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305 ): |
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306 return False |
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307 return True |
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308 |
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309 def getRoomJID(self, arg, service_jid): |
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310 """Return a room jid with a shortcut |
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311 |
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312 @param arg: argument: can be a full room jid (e.g.: sat@chat.jabberfr.org) |
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313 or a shortcut (e.g.: sat or sat@ for sat on current service) |
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314 @param service_jid: jid of the current service (e.g.: chat.jabberfr.org) |
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315 """ |
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316 nb_arobas = arg.count("@") |
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317 if nb_arobas == 1: |
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318 if arg[-1] != "@": |
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319 return jid.JID(arg) |
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320 return jid.JID(arg + service_jid) |
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321 return jid.JID(u"%s@%s" % (arg, service_jid)) |
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322 |
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323 def feedBack(self, client, message, mess_data, info_type=FEEDBACK_INFO_TYPE): |
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324 """Give a message back to the user""" |
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325 if mess_data["type"] == "groupchat": |
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326 to_ = mess_data["to"].userhostJID() |
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327 else: |
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328 to_ = client.jid |
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329 |
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330 # we need to invert send message back, so sender need to original destinee |
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331 mess_data["from"] = mess_data["to"] |
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332 mess_data["to"] = to_ |
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333 mess_data["type"] = C.MESS_TYPE_INFO |
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334 mess_data["message"] = {"": message} |
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335 mess_data["extra"]["info_type"] = info_type |
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336 client.messageSendToBridge(mess_data) |
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337 |
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338 def cmd_whois(self, client, mess_data): |
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339 """show informations on entity |
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340 |
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341 @command: [JID|ROOM_NICK] |
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342 - JID: entity to request |
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343 - ROOM_NICK: nick of the room to request |
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344 """ |
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345 log.debug("Catched whois command") |
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346 |
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347 entity = mess_data["unparsed"].strip() |
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348 |
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349 if mess_data["type"] == "groupchat": |
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350 room = mess_data["to"].userhostJID() |
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351 try: |
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352 if self.host.plugins["XEP-0045"].isNickInRoom(client, room, entity): |
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353 entity = u"%s/%s" % (room, entity) |
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354 except KeyError: |
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355 log.warning("plugin XEP-0045 is not present") |
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356 |
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357 if not entity: |
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358 target_jid = mess_data["to"] |
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359 else: |
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360 try: |
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361 target_jid = jid.JID(entity) |
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362 if not target_jid.user or not target_jid.host: |
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363 raise jid.InvalidFormat |
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364 except (RuntimeError, jid.InvalidFormat, AttributeError): |
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365 self.feedBack(client, _("Invalid jid, can't whois"), mess_data) |
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366 return False |
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367 |
921 | 368 if not target_jid.resource: |
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369 target_jid.resource = self.host.memory.getMainResource(client, target_jid) |
921 | 370 |
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371 whois_msg = [_(u"whois for %(jid)s") % {"jid": target_jid}] |
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372 |
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373 d = defer.succeed(None) |
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374 for ignore, callback in self._whois: |
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375 d.addCallback( |
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376 lambda ignore: callback(client, whois_msg, mess_data, target_jid) |
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377 ) |
921 | 378 |
379 def feedBack(ignore): | |
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380 self.feedBack(client, u"\n".join(whois_msg), mess_data) |
921 | 381 return False |
382 | |
383 d.addCallback(feedBack) | |
384 return d | |
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385 |
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386 def _getArgsHelp(self, cmd_data): |
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387 """Return help string for args of cmd_name, according to docstring data |
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388 |
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389 @param cmd_data: command data |
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390 @return (list[unicode]): help strings |
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391 """ |
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392 strings = [] |
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393 for doc_name, doc_help in cmd_data.iteritems(): |
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394 if doc_name.startswith("doc_arg_"): |
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395 arg_name = doc_name[8:] |
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396 strings.append( |
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397 u"- {name}: {doc_help}".format(name=arg_name, doc_help=_(doc_help)) |
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398 ) |
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399 |
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400 return strings |
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401 |
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402 def cmd_me(self, client, mess_data): |
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403 """display a message at third person |
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404 |
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405 @command (all): message |
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406 - message: message to show at third person |
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407 e.g.: "/me clenches his fist" will give "[YOUR_NICK] clenches his fist" |
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408 """ |
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409 # We just ignore the command as the match is done on receiption by clients |
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410 return True |
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411 |
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412 def cmd_whoami(self, client, mess_data): |
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413 """give your own jid""" |
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414 self.feedBack(client, client.jid.full(), mess_data) |
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415 |
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416 def cmd_help(self, client, mess_data): |
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417 """show help on available commands |
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418 |
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419 @command: [cmd_name] |
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420 - cmd_name: name of the command for detailed help |
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421 """ |
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422 cmd_name = mess_data["unparsed"].strip() |
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423 if cmd_name and cmd_name[0] == "/": |
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424 cmd_name = cmd_name[1:] |
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425 if cmd_name and cmd_name not in self._commands: |
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426 self.feedBack( |
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427 client, _(u"Invalid command name [{}]\n".format(cmd_name)), mess_data |
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428 ) |
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429 cmd_name = "" |
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430 if not cmd_name: |
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431 # we show the global help |
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432 longuest = max([len(command) for command in self._commands]) |
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433 help_cmds = [] |
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434 |
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435 for command in sorted(self._commands): |
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436 cmd_data = self._commands[command] |
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437 if not self._contextValid(mess_data, cmd_data): |
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438 continue |
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439 spaces = (longuest - len(command)) * " " |
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440 help_cmds.append( |
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441 " /{command}: {spaces} {short_help}".format( |
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442 command=command, |
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443 spaces=spaces, |
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444 short_help=cmd_data["doc_short_help"], |
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445 ) |
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446 ) |
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447 |
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448 help_mess = _(u"Text commands available:\n%s") % (u"\n".join(help_cmds),) |
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449 else: |
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450 # we show detailled help for a command |
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451 cmd_data = self._commands[cmd_name] |
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452 syntax = cmd_data["args"] |
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453 help_mess = _(u"/{name}: {short_help}\n{syntax}{args_help}").format( |
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454 name=cmd_name, |
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455 short_help=cmd_data["doc_short_help"], |
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456 syntax=_(" " * 4 + "syntax: {}\n").format(syntax) if syntax else "", |
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457 args_help=u"\n".join( |
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458 [u" " * 8 + "{}".format(line) for line in self._getArgsHelp(cmd_data)] |
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459 ), |
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460 ) |
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461 |
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462 self.feedBack(client, help_mess, mess_data) |