Mercurial > libervia-backend
annotate src/plugins/plugin_misc_text_commands.py @ 1396:069ad98b360d
2015 copyright dates update
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Mon, 30 Mar 2015 10:26:26 +0200 |
| parents | 85caf0a3abb3 |
| children | 3265a2639182 |
| rev | line source |
|---|---|
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1 #!/usr/bin/python |
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2 # -*- coding: utf-8 -*- |
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3 |
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4 # SàT plugin for managing text commands |
| 1396 | 5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 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": [], |
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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 |
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50 |
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51 class TextCommands(object): |
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52 #FIXME: doc strings for commands have to be translatable |
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53 # plugins need a dynamic translation system (translation |
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54 # should be downloadable independently) |
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55 |
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56 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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57 |
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58 def __init__(self, host): |
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59 log.info(_("Text commands initialization")) |
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60 self.host = host |
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61 host.trigger.add("sendMessage", self.sendMessageTrigger) |
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62 self._commands = {} |
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63 self._whois = [] |
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64 self.registerTextCommands(self) |
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65 |
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66 def _parseDocString(self, cmd, cmd_name): |
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67 """Parse a docstring to get text command data |
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68 |
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69 @param cmd: function or method callback for the command, |
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70 its docstring will be used for self documentation in the following way: |
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71 - first line is the command short documentation, shown with /help |
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72 - @command keyword can be used, see http://wiki.goffi.org/wiki/Coding_style/en for documentation |
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73 @return (dict): dictionary with parsed data where key can be: |
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74 - "doc_short_help" (default: ""): the untranslated short documentation |
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75 - "type" (default "all"): the command type as specified in documentation |
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76 - "args" (default: ""): the arguments available, using syntax specified in documentation. |
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77 - "doc_arg_[name]": the doc of [name] argument |
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78 """ |
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79 data = OrderedDict([('doc_short_help', ""), |
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80 ('type', 'all'), |
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81 ('args', '')]) |
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82 docstring = cmd.__doc__ |
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83 if docstring is None: |
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84 log.warning(u"Not docstring found for command {}".format(cmd_name)) |
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85 docstring = "" |
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86 |
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87 doc_data = docstring.split("\n") |
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88 data["doc_short_help"] = doc_data[0] |
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89 |
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90 try: |
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91 cmd_indent = 0 # >0 when @command is found are we are parsing it |
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92 |
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93 for line in doc_data: |
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94 stripped = line.strip() |
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95 if cmd_indent and line[cmd_indent:cmd_indent+5] == " -": |
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96 colon_idx = line.find(":") |
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97 if colon_idx == -1: |
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98 raise InvalidCommandSyntax("No colon found in argument description") |
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99 arg_name = line[cmd_indent+6:colon_idx].strip() |
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100 if not arg_name: |
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101 raise InvalidCommandSyntax("No name found in argument description") |
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102 arg_help = line[colon_idx+1:].strip() |
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103 data["doc_arg_{}".format(arg_name)] = arg_help |
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104 elif cmd_indent: |
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105 # we are parsing command and indent level is not good, it's finished |
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106 break |
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107 elif stripped.startswith(CMD_KEY): |
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108 cmd_indent = line.find(CMD_KEY) |
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109 |
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110 # type |
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111 colon_idx = stripped.find(":") |
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112 if colon_idx == -1: |
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113 raise InvalidCommandSyntax("missing colon") |
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114 type_data = stripped[len(CMD_KEY):colon_idx].strip() |
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115 if len(type_data) == 0: |
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116 type_data="(all)" |
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117 elif len(type_data) <= 2 or type_data[0] != '(' or type_data[-1] != ')': |
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118 raise InvalidCommandSyntax("Bad type data syntax") |
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119 type_ = type_data[1:-1] |
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120 if type_ not in CMD_TYPES: |
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121 raise InvalidCommandSyntax("Unknown type {}".format(type_)) |
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122 data["type"] = type_ |
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123 |
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124 #args |
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125 data["args"] = stripped[colon_idx+1:].strip() |
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126 except InvalidCommandSyntax as e: |
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127 log.warning(u"Invalid command syntax for command {command}: {message}".format(command=cmd_name, message=e.message)) |
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128 |
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129 return data |
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130 |
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131 |
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132 def registerTextCommands(self, instance): |
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133 """ Add a text command |
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134 |
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135 @param instance: instance of a class containing text commands |
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136 """ |
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137 for attr in dir(instance): |
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138 if attr.startswith('cmd_'): |
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139 cmd = getattr(instance, attr) |
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140 if not callable(cmd): |
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141 log.warning(_("Skipping not callable [%s] attribute") % attr) |
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142 continue |
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143 cmd_name = attr[4:] |
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144 if not cmd_name: |
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145 log.warning(_("Skipping cmd_ method")) |
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146 if cmd_name in self._commands: |
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147 suff=2 |
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148 while (cmd_name + str(suff)) in self._commands: |
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149 suff+=1 |
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150 new_name = cmd_name + str(suff) |
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151 log.warning(_("Conflict for command [%(old_name)s], renaming it to [%(new_name)s]") % {'old_name': cmd_name, 'new_name': new_name}) |
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152 cmd_name = new_name |
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153 self._commands[cmd_name] = cmd_data = OrderedDict({'callback':cmd}) # We use an Ordered dict to keep documenation order |
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154 cmd_data.update(self._parseDocString(cmd, cmd_name)) |
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155 log.info(_("Registered text command [%s]") % cmd_name) |
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156 |
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157 def addWhoIsCb(self, callback, priority=0): |
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158 """Add a callback which give information to the /whois command |
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159 |
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160 @param callback: a callback which will be called with the following arguments |
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161 - whois_msg: list of information strings to display, callback need to append its own strings to it |
| 1199 | 162 - target_jid: full jid from whom we want information |
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163 - profile: %(doc_profile)s |
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164 @param priority: priority of the information to show (the highest priority will be displayed first) |
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165 """ |
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166 self._whois.append((priority, callback)) |
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167 self._whois.sort(key=lambda item: item[0], reverse=True) |
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168 |
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169 def sendMessageTrigger(self, mess_data, pre_xml_treatments, post_xml_treatments, profile): |
| 921 | 170 """ Install SendMessage command hook """ |
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171 pre_xml_treatments.addCallback(self._sendMessageCmdHook, profile) |
| 921 | 172 return True |
| 173 | |
| 174 def _sendMessageCmdHook(self, mess_data, profile): | |
| 175 """ Check text commands in message, and react consequently | |
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176 |
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177 msg starting with / are potential command. If a command is found, it is executed, else and help message is sent |
| 921 | 178 msg starting with // are escaped: they are sent with a single / |
| 179 commands can abord message sending (if they return anything evaluating to False), or continue it (if they return True), eventually after modifying the message | |
| 180 an "unparsed" key is added to message, containing part of the message not yet parsed | |
| 181 commands can be deferred or not | |
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182 @param mess_data(dict): data comming from sendMessage trigger |
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183 @param profile: %(doc_profile)s |
| 921 | 184 """ |
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185 msg = mess_data["message"] |
| 921 | 186 try: |
| 187 if msg[:2] == '//': | |
| 188 # we have a double '/', it's the escape sequence | |
| 189 mess_data["message"] = msg[1:] | |
| 190 return mess_data | |
| 191 if msg[0] != '/': | |
| 192 return mess_data | |
| 193 except IndexError: | |
| 194 return mess_data | |
| 195 | |
| 196 # we have a command | |
| 197 d = None | |
| 198 command = msg[1:].partition(' ')[0].lower() | |
| 199 if command.isalpha(): | |
| 200 # looks like an actual command, we try to call the corresponding method | |
| 201 def retHandling(ret): | |
| 202 """ Handle command return value: | |
| 203 if ret is True, normally send message (possibly modified by command) | |
| 204 else, abord message sending | |
| 205 """ | |
| 206 if ret: | |
| 207 return mess_data | |
| 208 else: | |
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209 log.debug("text commands took over") |
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210 raise failure.Failure(exceptions.CancelError()) |
| 921 | 211 |
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212 def genericErrback(failure): |
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213 self.feedBack("Command failed with condition '%s'" % failure.value.condition, mess_data, profile) |
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214 return False |
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215 |
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216 mess_data["unparsed"] = msg[1 + len(command):] # part not yet parsed of the message |
| 921 | 217 try: |
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218 cmd_data = self._commands[command] |
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219 except KeyError: |
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220 self.feedBack(_("Unknown command /%s. ") % command + self.HELP_SUGGESTION, mess_data, profile) |
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221 log.debug("text commands took over") |
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222 raise failure.Failure(exceptions.CancelError()) |
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223 else: |
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224 if not self._contextValid(mess_data, cmd_data): |
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225 # The command is not launched in the right context, we throw a message with help instructions |
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226 context_txt = _("group discussions") if cmd_data["type"] == "group" else _("one to one discussions") |
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227 feedback = _("/{command} command only applies in {context}.").format(command=command, context=context_txt) |
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228 self.feedBack(u"{} {}".format(feedback, self.HELP_SUGGESTION), mess_data, profile) |
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229 log.debug("text commands took over") |
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230 raise failure.Failure(exceptions.CancelError()) |
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231 else: |
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232 d = defer.maybeDeferred(cmd_data["callback"], mess_data, profile) |
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233 d.addErrback(genericErrback) |
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234 d.addCallback(retHandling) |
| 921 | 235 |
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236 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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237 |
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238 def _contextValid(self, mess_data, cmd_data): |
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239 """Tell if a command can be used in the given context |
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240 |
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241 @param mess_data(dict): message data as given in sendMessage trigger |
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242 @param cmd_data(dict): command data as returned by self._parseDocString |
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243 @return (bool): True if command can be used in this context |
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244 """ |
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245 if ((cmd_data['type'] == "group" and mess_data["type"] != "groupchat") or |
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246 (cmd_data['type'] == 'one2one' and mess_data["type"] == "groupchat")): |
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247 return False |
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248 return True |
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249 |
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250 def getRoomJID(self, arg, service_jid): |
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251 """Return a room jid with a shortcut |
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252 |
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253 @param arg: argument: can be a full room jid (e.g.: sat@chat.jabberfr.org) |
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254 or a shortcut (e.g.: sat or sat@ for sat on current service) |
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255 @param service_jid: jid of the current service (e.g.: chat.jabberfr.org) |
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256 """ |
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257 nb_arobas = arg.count('@') |
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258 if nb_arobas == 1: |
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259 if arg[-1] != '@': |
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260 return jid.JID(arg) |
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261 return jid.JID(arg + service_jid) |
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262 return jid.JID(u"%s@%s" % (arg, service_jid)) |
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263 |
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264 def feedBack(self, message, mess_data, profile): |
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265 """Give a message back to the user""" |
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266 if mess_data["type"] == 'groupchat': |
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267 _from = mess_data["to"].userhostJID() |
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268 else: |
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269 _from = self.host.getJidNStream(profile)[0] |
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270 |
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271 self.host.bridge.newMessage(unicode(mess_data["to"]), message, C.MESS_TYPE_INFO, unicode(_from), {}, profile=profile) |
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272 |
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273 def cmd_whois(self, mess_data, profile): |
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274 """show informations on entity |
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275 |
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276 @command: [JID|ROOM_NICK] |
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277 - JID: entity to request |
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278 - ROOM_NICK: nick of the room to request |
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279 """ |
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280 log.debug("Catched whois command") |
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281 |
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282 entity = mess_data["unparsed"].strip() |
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283 |
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284 if mess_data['type'] == "groupchat": |
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285 room = mess_data["to"].userhostJID() |
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286 try: |
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287 if self.host.plugins["XEP-0045"].isNickInRoom(room, entity, profile): |
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288 entity = u"%s/%s" % (room, entity) |
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289 except KeyError: |
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290 log.warning("plugin XEP-0045 is not present") |
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291 |
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292 if not entity: |
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293 target_jid = mess_data["to"] |
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294 else: |
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295 try: |
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296 target_jid = jid.JID(entity) |
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297 if not target_jid.user or not target_jid.host: |
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298 raise jid.InvalidFormat |
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299 except (jid.InvalidFormat, RuntimeError): |
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300 self.feedBack(_("Invalid jid, can't whois"), mess_data, profile) |
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301 return False |
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302 |
| 921 | 303 if not target_jid.resource: |
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304 target_jid.resource = self.host.memory.getMainResource(target_jid, profile) |
| 921 | 305 |
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306 whois_msg = [_(u"whois for %(jid)s") % {'jid': target_jid}] |
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307 |
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308 d = defer.succeed(None) |
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309 for ignore, callback in self._whois: |
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310 d.addCallback(lambda ignore: callback(whois_msg, mess_data, target_jid, profile)) |
| 921 | 311 |
| 312 def feedBack(ignore): | |
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313 self.feedBack(u"\n".join(whois_msg), mess_data, profile) |
| 921 | 314 return False |
| 315 | |
| 316 d.addCallback(feedBack) | |
| 317 return d | |
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318 |
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319 def _getArgsHelp(self, cmd_data): |
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320 """Return help string for args of cmd_name, according to docstring data |
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321 |
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322 @param cmd_data: command data |
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323 @return (list[unicode]): help strings |
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324 """ |
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325 strings = [] |
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326 for doc_name, doc_help in cmd_data.iteritems(): |
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327 if doc_name.startswith("doc_arg_"): |
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328 arg_name = doc_name[8:] |
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329 strings.append(u"- {name}: {doc_help}".format(name=arg_name, doc_help=_(doc_help))) |
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330 |
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331 return strings |
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332 |
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333 def cmd_help(self, mess_data, profile): |
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334 """show help on available commands |
|
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335 |
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336 @command: [cmd_name] |
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337 - cmd_name: name of the command for detailed help |
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338 """ |
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339 cmd_name = mess_data["unparsed"].strip() |
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340 if cmd_name and cmd_name[0] == "/": |
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341 cmd_name = cmd_name[1:] |
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342 if cmd_name and cmd_name not in self._commands: |
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343 self.feedBack(_(u"Invalid command name [{}]\n".format(cmd_name)), mess_data, profile) |
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344 cmd_name = "" |
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345 if not cmd_name: |
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346 # we show the global help |
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347 longuest = max([len(command) for command in self._commands]) |
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348 help_cmds = [] |
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349 |
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350 for command in sorted(self._commands): |
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351 cmd_data = self._commands[command] |
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352 if not self._contextValid(mess_data, cmd_data): |
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353 continue |
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354 spaces = (longuest - len(command)) * ' ' |
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355 help_cmds.append(" /{command}: {spaces} {short_help}".format( |
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356 command=command, |
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357 spaces=spaces, |
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358 short_help=cmd_data["doc_short_help"] |
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359 )) |
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360 |
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361 help_mess = _(u"Text commands available:\n%s") % (u'\n'.join(help_cmds), ) |
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362 else: |
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363 # we show detailled help for a command |
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364 cmd_data = self._commands[cmd_name] |
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365 syntax = cmd_data["args"] |
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366 help_mess = _(u"/{name}: {short_help}\n{syntax}{args_help}").format( |
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367 name=cmd_name, |
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368 short_help=cmd_data['doc_short_help'], |
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369 syntax=_(" "*4+"syntax: {}\n").format(syntax) if syntax else "", |
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370 args_help=u'\n'.join([u" "*8+"{}".format(line) for line in self._getArgsHelp(cmd_data)])) |
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371 |
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372 self.feedBack(help_mess, mess_data, profile) |
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373 |
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374 def cmd_me(self, mess_data, profile): |
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375 """Display a message at third person |
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376 |
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377 @command: message |
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378 - message: message to display at the third person |
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379 """ |
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380 # We just catch the method and continue it as the frontends should manage /me display |
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381 return True |