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

Mon, 15 Apr 2019 19:53:29 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Mon, 15 Apr 2019 19:53:29 +0200
branch
setup.py
changeset 6949
a5255f1ba3f0
parent 6942
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child 7192
a22eee00b052
permissions
-rw-r--r--

setup.py: continued implementing support for setup.py.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2014 - 2019 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 Microsoft translation engine.
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8 """
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9
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10 from __future__ import unicode_literals
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11 try:
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12 str = unicode
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13 except NameError:
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14 pass
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15
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16 from PyQt5.QtCore import QUrl, QDateTime, QByteArray, QTimer
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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 MicrosoftEngine(TranslationEngine):
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22 """
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23 Class implementing the translation engine for the Microsoft
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24 translation service.
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25 """
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26 AccessTokenUrl = \
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27 "https://api.cognitive.microsoft.com/sts/v1.0/issueToken"
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28 TranslatorUrl = "https://api.microsofttranslator.com/V2/Http.svc/Translate"
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29 TextToSpeechUrl = "https://api.microsofttranslator.com/V2/Http.svc/Speak"
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30
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31 def __init__(self, plugin, parent=None):
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32 """
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33 Constructor
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34
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35 @param plugin reference to the plugin object (TranslatorPlugin)
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36 @param parent reference to the parent object (QObject)
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37 """
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38 super(MicrosoftEngine, self).__init__(plugin, parent)
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39
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40 self.__mappings = {
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41 "zh-CN": "zh-CHS",
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42 "zh-TW": "zh-CHT",
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43 }
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44
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45 QTimer.singleShot(0, self.availableTranslationsLoaded.emit)
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46
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47 def engineName(self):
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48 """
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49 Public method to return the name of the engine.
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50
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51 @return engine name (string)
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52 """
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53 return "microsoft"
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54
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55 def supportedLanguages(self):
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56 """
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57 Public method to get the supported languages.
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58
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59 @return list of supported language codes (list of string)
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60 """
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61 return ["ar", "bg", "ca", "cs", "da", "de", "en",
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62 "es", "et", "fi", "fr", "hi", "hu", "id",
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63 "it", "ja", "ko", "lt", "lv", "mt",
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64 "nl", "no", "pl", "pt", "ro", "ru", "sk", "sl",
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65 "sv", "th", "tr", "uk", "vi", "zh-CN", "zh-TW",
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66 ]
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67
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68 def hasTTS(self):
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69 """
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70 Public method indicating the Text-to-Speech capability.
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71
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72 @return flag indicating the Text-to-Speech capability (boolean)
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73 """
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74 return True
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75
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76 def __mapLanguageCode(self, code):
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77 """
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78 Private method to map a language code to the Microsoft code.
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79
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80 @param code language code (string)
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81 @return mapped language code (string)
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82 """
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83 if code in self.__mappings:
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84 return self.__mapping[code]
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85 else:
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86 return code
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87
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88 def __getClientDataAzure(self):
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89 """
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90 Private method to retrieve the client data.
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91
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92 @return tuple giving the API subscription key and a flag indicating
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93 validity
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94 @rtype tuple of (str, bool)
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95 """
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96 subscriptionKey = self.plugin.getPreferences("MsTranslatorKey")
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97 valid = bool(subscriptionKey)
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98 return subscriptionKey, valid
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99
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100 def __getAccessToken(self, requestObject):
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101 """
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102 Private slot to get an access token.
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103
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104 If the stored token is no longer valid, get a new one and store it.
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105
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106 @param requestObject reference to the request object
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107 (TranslatorRequest)
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108 @return access token (string)
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109 """
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110 if self.plugin.getPreferences("MsAuthTokenExpire") > \
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111 QDateTime.currentDateTime():
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112 return self.plugin.getPreferences("MsAuthToken")
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113
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114 # Token expired, get a new one
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115 subscriptionKey, valid = self.__getClientDataAzure()
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116 if not valid:
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117 return ""
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118
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119 subscriptionHeader = (b"Ocp-Apim-Subscription-Key",
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120 subscriptionKey.encode("utf-8"))
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121 response, ok = requestObject.post(
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122 QUrl(self.AccessTokenUrl), QByteArray(b""),
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123 extraHeaders=[subscriptionHeader])
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124 if ok:
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125 self.plugin.setPreferences("MsAuthToken", response)
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126 self.plugin.setPreferences(
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127 "MsAuthTokenExpire",
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128 QDateTime.currentDateTime().addSecs(8 * 60))
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129 return response
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130 else:
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131 return ""
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132
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133 def getTranslation(self, requestObject, text, originalLanguage,
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134 translationLanguage):
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135 """
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136 Public method to translate the given text.
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137
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138 @param requestObject reference to the request object
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139 (TranslatorRequest)
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140 @param text text to be translated (string)
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141 @param originalLanguage language code of the original (string)
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142 @param translationLanguage language code of the translation (string)
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143 @return tuple of translated text (string) and flag indicating
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144 success (boolean)
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145 """
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146 subscriptionKey, valid = self.__getClientDataAzure()
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147 if not valid:
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148 return (self.tr("""You have not registered for the Microsoft"""
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149 """ Translation service."""),
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150 False)
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151
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152 accessToken = self.__getAccessToken(requestObject)
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153 if not accessToken:
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154 return (self.tr("No valid access token available."), False)
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155
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156 authHeader = (b"Authorization",
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157 "Bearer {0}".format(accessToken).encode("utf-8"))
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158 params = "?appid=&from={0}&to={1}&text={2}".format(
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159 self.__mapLanguageCode(originalLanguage),
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160 self.__mapLanguageCode(translationLanguage),
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161 text)
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162 url = QUrl(self.TranslatorUrl + params)
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163 response, ok = requestObject.get(url, extraHeaders=[authHeader])
6470
5fe5ea985237 TranslatorEngines: fixed an issue in some translator engines not respecting the possibility of receiving an error string object from the TranslatorObject.get() call.
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parents: 6412
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164 if ok:
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165 response = str(response, "utf-8", "replace").strip()
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166 if response.startswith("<string") and \
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167 response.endswith("</string>"):
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168 result = response.split(">", 1)[1].rsplit("<", 1)[0]
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169 else:
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170 result = self.tr("No translation available.")
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171 ok = False
6018
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172 return result, ok
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173
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174 def getTextToSpeechData(self, requestObject, text, language):
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175 """
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176 Public method to pronounce the given text.
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177
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178 @param requestObject reference to the request object
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179 (TranslatorRequest)
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180 @param text text to be pronounced (string)
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181 @param language language code of the text (string)
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182 @return tuple with pronounce data (QByteArray) or error string (string)
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183 and success flag (boolean)
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184 """
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185 subscriptionKey, valid = self.__getClientDataAzure()
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parents:
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186 if not valid:
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187 return (self.tr("""You have not registered for the Microsoft"""
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parents:
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188 """ Translation service."""),
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parents:
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189 False)
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parents:
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190
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191 accessToken = self.__getAccessToken(requestObject)
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parents:
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192 if not accessToken:
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193 return (self.tr("No valid access token available."), False)
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194
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195 params = "?language={0}&format={1}&options={2}&text={3}".format(
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196 self.__mapLanguageCode(language),
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parents:
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197 "audio/wav",
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parents:
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198 "MaxQuality",
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parents:
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199 text)
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200 authHeader = (b"Authorization",
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parents:
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201 "Bearer {0}".format(accessToken).encode("utf-8"))
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parents:
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202 url = QUrl(self.TextToSpeechUrl + params)
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parents:
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203 data, ok = requestObject.get(url, extraHeaders=[authHeader])
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parents:
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204 if not ok:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
205 data = self.tr("No Text-to-Speech for the selected language"
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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206 " available.")
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parents:
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207 return data, ok

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