eric6/Plugins/UiExtensionPlugins/Translator/TranslatorEngines/GoogleV1Engine.py

Sat, 03 Oct 2020 18:11:45 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sat, 03 Oct 2020 18:11:45 +0200
changeset 7748
23e98236a4c4
parent 7360
9190402e4505
child 7780
41420f82c0ac
permissions
-rw-r--r--

Translator Engines: changes the user messages to contain an engine prefix.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2014 - 2020 Detlev Offenbach <detlev@die-offenbachs.de>
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4 #
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5
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6 """
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7 Module implementing the Google V1 translation engine.
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8 """
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9
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10
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11 import json
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12 import re
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13
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14 from PyQt5.QtCore import QByteArray, QUrl, QTimer
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15
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16 import Utilities
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17
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18 from .TranslationEngine import TranslationEngine
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19
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20
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21 class GoogleV1Engine(TranslationEngine):
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22 """
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23 Class implementing the translation engine for the old Google
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24 translation service.
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25 """
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26 TranslatorUrl = "https://translate.googleapis.com/translate_a/single"
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27 TextToSpeechUrl = "https://translate.google.com/translate_tts"
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28 TextToSpeechLimit = 100
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29
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30 def __init__(self, plugin, parent=None):
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31 """
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32 Constructor
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33
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34 @param plugin reference to the plugin object (TranslatorPlugin)
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35 @param parent reference to the parent object (QObject)
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36 """
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37 super(GoogleV1Engine, self).__init__(plugin, parent)
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38
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39 QTimer.singleShot(0, self.availableTranslationsLoaded.emit)
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40
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41 def engineName(self):
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42 """
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43 Public method to return the name of the engine.
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44
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45 @return engine name (string)
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46 """
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47 return "googlev1"
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48
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49 def supportedLanguages(self):
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50 """
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51 Public method to get the supported languages.
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52
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53 @return list of supported language codes (list of string)
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54 """
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55 return ["ar", "be", "bg", "bs", "ca", "cs", "da", "de", "el", "en",
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56 "es", "et", "fi", "fr", "ga", "gl", "hi", "hr", "hu", "id",
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57 "is", "it", "iw", "ja", "ka", "ko", "lt", "lv", "mk", "mt",
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58 "nl", "no", "pl", "pt", "ro", "ru", "sk", "sl", "sq", "sr",
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59 "sv", "th", "tl", "tr", "uk", "vi", "zh-CN", "zh-TW",
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60 ]
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61
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62 def hasTTS(self):
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63 """
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64 Public method indicating the Text-to-Speech capability.
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65
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66 @return flag indicating the Text-to-Speech capability (boolean)
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67 """
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68 return False # doesn't work reliably
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69
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70 def getTranslation(self, requestObject, text, originalLanguage,
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71 translationLanguage):
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72 """
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73 Public method to translate the given text.
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74
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75 @param requestObject reference to the request object
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76 (TranslatorRequest)
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77 @param text text to be translated (string)
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78 @param originalLanguage language code of the original (string)
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79 @param translationLanguage language code of the translation (string)
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80 @return tuple of translated text (string) and flag indicating
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81 success (boolean)
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82 """
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83 params = QByteArray(
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84 "client=gtx&sl={0}&tl={1}&dt=t&dt=bd&ie=utf-8&oe=utf-8&q=".format(
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85 originalLanguage, translationLanguage).encode("utf-8"))
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86 encodedText = (
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87 QByteArray(Utilities.html_encode(text).encode("utf-8"))
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88 .toPercentEncoding()
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89 )
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90 request = params + encodedText
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91 response, ok = requestObject.post(QUrl(self.TranslatorUrl), request)
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92 if ok:
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93 try:
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94 # clean up the response
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95 response = re.sub(r',{2,}', ',', response)
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96 responseDict = json.loads(response)
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97 except ValueError:
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98 return self.tr("Google V1: Invalid response received"), False
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99
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100 if isinstance(responseDict, dict):
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101 sentences = responseDict["sentences"]
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102 result = ""
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103 for sentence in sentences:
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104 result += sentence["trans"].replace("\n", "<br/>")
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105
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106 if (
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107 self.plugin.getPreferences("GoogleEnableDictionary") and
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108 "dict" in responseDict
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109 ):
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110 dictionary = responseDict["dict"]
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111 for value in dictionary:
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112 result += "<hr/><u><b>{0}</b> - {1}</u><br/>".format(
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113 text, value["pos"])
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114 for entry in value["entry"]:
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115 if "previous_word" in entry:
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116 previous = entry["previous_word"] + " "
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117 else:
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118 previous = ""
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119 word = entry["word"]
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120 reverse = entry["reverse_translation"]
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121 result += "<br/>{0}<b>{1}</b> - {2}".format(
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122 previous, word, ", ".join(reverse))
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123 if value != dictionary[-1]:
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124 result += "<br/>"
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125 elif isinstance(responseDict, list):
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126 sentences = responseDict[0]
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127 result = (
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128 "".join([s[0] for s in sentences]).replace("\n", "<br/>")
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129 )
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130 if (
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131 self.plugin.getPreferences("GoogleEnableDictionary") and
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132 len(responseDict) > 2
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133 ):
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134 if not responseDict[1]:
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135 result = self.tr("Google V1: No translation found.")
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136 ok = False
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137 else:
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138 for wordTypeList in responseDict[1]:
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139 result += "<hr/><u><b>{0}</b> - {1}</u>".format(
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140 wordTypeList[0], wordTypeList[-2])
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parents:
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141 for wordsList in wordTypeList[2]:
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142 reverse = wordsList[0]
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143 words = wordsList[1]
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144 result += "<br/><b>{0}</b> - {1}".format(
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145 reverse, ", ".join(words))
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146 else:
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147 result = responseDict
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148 else:
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149 result = response
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150 return result, ok
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151
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152 def getTextToSpeechData(self, requestObject, text, language):
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153 """
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154 Public method to pronounce the given text.
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155
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156 @param requestObject reference to the request object
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157 (TranslatorRequest)
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parents:
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158 @param text text to be pronounced (string)
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159 @param language language code of the text (string)
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160 @return tuple with pronounce data (QByteArray) or error string (string)
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parents:
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161 and success flag (boolean)
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parents:
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162 """
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163 text = text.split("\n\n", 1)[0]
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164 if len(text) > self.TextToSpeechLimit:
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165 return (self.tr("Google V1: Only texts up to {0} characters are"
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parents: 7360
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166 " allowed.")
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167 .format(self.TextToSpeechLimit), False)
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parents:
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168
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parents:
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169 url = QUrl(self.TextToSpeechUrl +
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170 "?client=tw-ob&ie=utf-8&tl={0}&q={1}".format(
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parents:
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171 language, text))
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172 return requestObject.get(url)

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