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annotate libervia/backend/plugins/plugin_exp_lang_detect.py @ 4120:832a7bdb3aea

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plugin XEP-0167: don't override existing metadata when preparing confirmation: rel 424
author Goffi <goffi@goffi.org>
date Tue, 03 Oct 2023 15:20:00 +0200
parents 4b842c1fb686
children 0d7bb4df2343
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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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19
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20 from libervia.backend.core.i18n import _, D_
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21 from libervia.backend.core.constants import Const as C
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22 from libervia.backend.core.log import getLogger
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24 log = getLogger(__name__)
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25 from libervia.backend.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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36
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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.update_params(PARAMS)
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69 host.trigger.add("message_received", self.message_received_trigger)
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70 host.trigger.add("sendMessage", self.message_send_trigger)
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72 def add_language(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].strip()
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76 if msg:
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77 lang = identifier.classify(msg)[0]
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78 mess_data["message"] = {lang: msg}
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79 return mess_data
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80
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81 def message_received_trigger(self, client, message_elt, post_treat):
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82 """ Check if source is linked and repeat message, else do nothing """
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83
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84 lang_detect = self.host.memory.param_get_a(
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85 NAME, CATEGORY, profile_key=client.profile
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86 )
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87 if lang_detect:
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88 post_treat.addCallback(self.add_language)
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89 return True
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90
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91 def message_send_trigger(self, client, data, pre_xml_treatments, post_xml_treatments):
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92 lang_detect = self.host.memory.param_get_a(
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93 NAME, CATEGORY, profile_key=client.profile
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94 )
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95 if lang_detect:
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96 self.add_language(data)
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97 return True