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annotate src/plugins/plugin_exp_lang_detect.py @ 2105:c96fe007ca41

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core(constants): added a constant for profile extension (PLUGIN_EXT): this constant may be modified if needed, which is the case on Android (it's modified by Cagou service's main.py), so platform detection is not needed anymore in sat_main.py.
author Goffi <goffi@goffi.org>
date Sun, 25 Dec 2016 16:43:56 +0100
parents d95a6d553bec
children 1d3f73e065e1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1965
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) 2009-2016 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.log import getLogger
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22 log = getLogger(__name__)
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23 from sat.core import exceptions
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24
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25 try:
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26 from langid.langid import LanguageIdentifier, model
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27 except ImportError:
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28 raise exceptions.MissingModule(u'Missing module langid, please download/install it with "pip install langid")')
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29
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30 identifier = LanguageIdentifier.from_modelstring(model, norm_probs=False)
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31
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32
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33 PLUGIN_INFO = {
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34 "name": "Language detection plugin",
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35 "import_name": "EXP-LANG-DETECT",
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36 "type": "EXP",
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37 "protocols": [],
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38 "dependencies": [],
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39 "main": "LangDetect",
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40 "handler": "no",
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41 "description": _("""Detect and set message language when unknown""")
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42 }
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43
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44 CATEGORY = D_(u"Misc")
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45 NAME = u"lang_detect"
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46 LABEL = D_(u"language detection")
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47 PARAMS = """
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48 <params>
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49 <individual>
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50 <category name="{category_name}">
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51 <param name="{name}" label="{label}" type="bool" value="true" />
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52 </category>
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53 </individual>
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54 </params>
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55 """.format(category_name=CATEGORY,
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56 name=NAME,
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57 label=_(LABEL),
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58 )
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59
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60
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61 class LangDetect(object):
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62
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63 def __init__(self, host):
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64 log.info(_(u"Language detection plugin initialization"))
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65 self.host = host
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66 host.memory.updateParams(PARAMS)
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67 host.trigger.add("MessageReceived", self.MessageReceivedTrigger)
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68 host.trigger.add("messageSend", self.MessageSendTrigger)
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69
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70 def addLanguage(self, mess_data):
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71 message = mess_data['message']
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72 if len(message) == 1 and message.keys()[0] == '':
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73 msg = message.values()[0]
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74 lang = identifier.classify(msg)[0]
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75 mess_data["message"] = {lang: msg}
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76 return mess_data
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77
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78 def MessageReceivedTrigger(self, client, message_elt, post_treat):
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79 """ Check if source is linked and repeat message, else do nothing """
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80
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81 lang_detect = self.host.memory.getParamA(NAME, CATEGORY, profile_key=client.profile)
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82 if lang_detect:
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83 post_treat.addCallback(self.addLanguage)
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84 return True
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85
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86 def MessageSendTrigger(self, client, data, pre_xml_treatments, post_xml_treatments):
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87 lang_detect = self.host.memory.getParamA(NAME, CATEGORY, profile_key=client.profile)
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88 if lang_detect:
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89 self.addLanguage(data)
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90 return True