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annotate sat/plugins/plugin_exp_lang_detect.py @ 3652:6e34307319c0

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plugin XEP-0353: fix jingle initiation on disco "Service Unavailable" error: When requesting disco info on a bare jid which is not in our roster, server may return "Service Unavailable" (to avoid leaking valid JIDs). In this case, the initiation was failing, this is now fixed by using empty categories in this case.
author Goffi <goffi@goffi.org>
date Wed, 08 Sep 2021 11:16:52 +0200
parents be6d91572633
children cdb7de398c85
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1 #!/usr/bin/env python3
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2
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4 # SAT plugin to detect language (experimental)
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5 # Copyright (C) 2009-2021 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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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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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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20 from sat.core.i18n import _, D_
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21 from sat.core.constants import Const as C
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22 from sat.core.log import getLogger
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24 log = getLogger(__name__)
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25 from sat.core import exceptions
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27 try:
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28 from langid.langid import LanguageIdentifier, model
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29 except ImportError:
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30 raise exceptions.MissingModule(
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31 'Missing module langid, please download/install it with "pip install langid")'
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32 )
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34 identifier = LanguageIdentifier.from_modelstring(model, norm_probs=False)
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37 PLUGIN_INFO = {
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38 C.PI_NAME: "Language detection plugin",
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39 C.PI_IMPORT_NAME: "EXP-LANG-DETECT",
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40 C.PI_TYPE: "EXP",
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41 C.PI_PROTOCOLS: [],
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42 C.PI_DEPENDENCIES: [],
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43 C.PI_MAIN: "LangDetect",
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44 C.PI_HANDLER: "no",
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45 C.PI_DESCRIPTION: _("""Detect and set message language when unknown"""),
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46 }
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47
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48 CATEGORY = D_("Misc")
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49 NAME = "lang_detect"
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50 LABEL = D_("language detection")
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51 PARAMS = """
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52 <params>
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53 <individual>
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54 <category name="{category_name}">
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55 <param name="{name}" label="{label}" type="bool" value="true" />
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56 </category>
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57 </individual>
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58 </params>
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59 """.format(
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60 category_name=CATEGORY, name=NAME, label=_(LABEL)
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61 )
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64 class LangDetect(object):
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65 def __init__(self, host):
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66 log.info(_("Language detection plugin initialization"))
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67 self.host = host
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68 host.memory.updateParams(PARAMS)
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69 host.trigger.add("messageReceived", self.messageReceivedTrigger)
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70 host.trigger.add("sendMessage", self.MessageSendTrigger)
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72 def addLanguage(self, mess_data):
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73 message = mess_data["message"]
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74 if len(message) == 1 and list(message.keys())[0] == "":
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75 msg = list(message.values())[0]
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76 lang = identifier.classify(msg)[0]
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77 mess_data["message"] = {lang: msg}
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78 return mess_data
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80 def messageReceivedTrigger(self, client, message_elt, post_treat):
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81 """ Check if source is linked and repeat message, else do nothing """
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83 lang_detect = self.host.memory.getParamA(
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84 NAME, CATEGORY, profile_key=client.profile
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85 )
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86 if lang_detect:
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87 post_treat.addCallback(self.addLanguage)
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88 return True
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90 def MessageSendTrigger(self, client, data, pre_xml_treatments, post_xml_treatments):
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91 lang_detect = self.host.memory.getParamA(
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92 NAME, CATEGORY, profile_key=client.profile
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93 )
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94 if lang_detect:
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95 self.addLanguage(data)
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96 return True