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annotate src/plugins/plugin_exp_lang_detect.py @ 2553:39b10475f56b

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author Goffi <goffi@goffi.org>
date Sat, 31 Mar 2018 18:42:01 +0200
parents 0046283a285d
children
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4c5d8cd35690 plugin exp_lang_detect: language detection plugin, first draft
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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 # SAT plugin to detect language (experimental)
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5 # Copyright (C) 2009-2018 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
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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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23 log = getLogger(__name__)
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24 from sat.core import exceptions
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25
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26 try:
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27 from langid.langid import LanguageIdentifier, model
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28 except ImportError:
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29 raise exceptions.MissingModule(u'Missing module langid, please download/install it with "pip install langid")')
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30
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31 identifier = LanguageIdentifier.from_modelstring(model, norm_probs=False)
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32
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33
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34 PLUGIN_INFO = {
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35 C.PI_NAME: "Language detection plugin",
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36 C.PI_IMPORT_NAME: "EXP-LANG-DETECT",
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37 C.PI_TYPE: "EXP",
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38 C.PI_PROTOCOLS: [],
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39 C.PI_DEPENDENCIES: [],
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40 C.PI_MAIN: "LangDetect",
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41 C.PI_HANDLER: "no",
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42 C.PI_DESCRIPTION: _("""Detect and set message language when unknown""")
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43 }
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44
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45 CATEGORY = D_(u"Misc")
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46 NAME = u"lang_detect"
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47 LABEL = D_(u"language detection")
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48 PARAMS = """
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49 <params>
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50 <individual>
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51 <category name="{category_name}">
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52 <param name="{name}" label="{label}" type="bool" value="true" />
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53 </category>
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54 </individual>
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55 </params>
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56 """.format(category_name=CATEGORY,
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57 name=NAME,
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58 label=_(LABEL),
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59 )
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60
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61
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62 class LangDetect(object):
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63
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64 def __init__(self, host):
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65 log.info(_(u"Language detection plugin initialization"))
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66 self.host = host
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67 host.memory.updateParams(PARAMS)
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68 host.trigger.add("MessageReceived", self.MessageReceivedTrigger)
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69 host.trigger.add("sendMessage", self.MessageSendTrigger)
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70
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71 def addLanguage(self, mess_data):
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72 message = mess_data['message']
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73 if len(message) == 1 and message.keys()[0] == '':
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74 msg = message.values()[0]
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75 lang = identifier.classify(msg)[0]
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76 mess_data["message"] = {lang: msg}
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77 return mess_data
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78
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79 def MessageReceivedTrigger(self, client, message_elt, post_treat):
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80 """ Check if source is linked and repeat message, else do nothing """
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82 lang_detect = self.host.memory.getParamA(NAME, CATEGORY, profile_key=client.profile)
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83 if lang_detect:
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84 post_treat.addCallback(self.addLanguage)
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85 return True
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86
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87 def MessageSendTrigger(self, client, data, pre_xml_treatments, post_xml_treatments):
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88 lang_detect = self.host.memory.getParamA(NAME, CATEGORY, profile_key=client.profile)
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89 if lang_detect:
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90 self.addLanguage(data)
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91 return True