eric6/Plugins/UiExtensionPlugins/Translator/TranslatorEngines/YandexEngine.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
2602857055c5
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 Yandex 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 import json
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17
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18 from PyQt5.QtCore import QUrl, QByteArray, QTimer
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19
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20 import Utilities
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21
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22 from .TranslationEngine import TranslationEngine
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23
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24
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25 class YandexEngine(TranslationEngine):
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26 """
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27 Class implementing the translation engine for the Yandex
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28 translation service.
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29 """
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30 TranslatorUrl = "https://translate.yandex.net/api/v1.5/tr.json/translate"
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31 TranslatorLimit = 10000
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32
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33 def __init__(self, plugin, parent=None):
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34 """
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35 Constructor
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36
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37 @param plugin reference to the plugin object (TranslatorPlugin)
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38 @param parent reference to the parent object (QObject)
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39 """
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40 super(YandexEngine, self).__init__(plugin, parent)
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41
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42 self.__errors = {
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43 401: self.tr("Invalid API key."),
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44 402: self.tr("API key has been blocked."),
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45 403: self.tr("Daily limit for requests has been reached."),
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46 404: self.tr("Daily limit for the volume of translated text"
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47 " reached."),
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48 413: self.tr("Text size exceeds the maximum."),
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49 422: self.tr("Text could not be translated."),
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50 501: self.tr("The specified translation direction is not"
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51 " supported."),
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52 }
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53
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54 QTimer.singleShot(0, self.availableTranslationsLoaded.emit)
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55
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56 def engineName(self):
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57 """
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58 Public method to return the name of the engine.
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59
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60 @return engine name (string)
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61 """
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62 return "yandex"
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63
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64 def supportedLanguages(self):
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65 """
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66 Public method to get the supported languages.
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67
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68 @return list of supported language codes (list of string)
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69 """
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70 return ["ar", "be", "bg", "bs", "ca", "cs", "da", "de", "el", "en",
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71 "es", "et", "fi", "fr", "ga", "gl", "hi", "hr", "hu", "id",
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72 "is", "it", "iw", "ja", "ka", "ko", "lt", "lv", "mk", "mt",
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73 "nl", "no", "pl", "pt", "ro", "ru", "sk", "sl", "sq", "sr",
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74 "sv", "th", "tl", "tr", "uk", "vi", "zh-CN", "zh-TW",
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75 ]
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76
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77 def getTranslation(self, requestObject, text, originalLanguage,
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78 translationLanguage):
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79 """
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80 Public method to translate the given text.
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81
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82 @param requestObject reference to the request object
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83 (TranslatorRequest)
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84 @param text text to be translated (string)
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85 @param originalLanguage language code of the original (string)
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86 @param translationLanguage language code of the translation (string)
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87 @return tuple of translated text (string) and flag indicating
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88 success (boolean)
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89 """
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90 if len(text) > self.TranslatorLimit:
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91 return (self.tr("Only texts up to {0} characters are allowed.")
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92 .format(self.TranslatorLimit), False)
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93
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94 apiKey = self.plugin.getPreferences("YandexKey")
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95 if not apiKey:
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96 return self.tr("A valid Yandex key is required."), False
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97
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98 params = QByteArray(
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99 "key={0}&lang={1}-{2}&text=".format(
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100 apiKey, originalLanguage, translationLanguage).encode("utf-8"))
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101 encodedText = QByteArray(Utilities.html_encode(text).encode("utf-8"))\
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102 .toPercentEncoding()
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103 request = params + encodedText
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104 response, ok = requestObject.post(QUrl(self.TranslatorUrl), request)
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105 if ok:
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106 try:
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107 responseDict = json.loads(response)
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108 except ValueError:
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109 return self.tr("Invalid response received"), False
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110
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111 if responseDict["code"] != 200:
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112 try:
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113 error = self.__errors[responseDict["code"]]
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114 except KeyError:
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115 error = self.tr("Unknown error code ({0}) received.")\
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116 .format(responseDict["code"])
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117 return error, False
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118
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119 sentences = responseDict["text"]
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120 result = ""
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121 for sentence in sentences:
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122 result += sentence.replace("\n", "<br/>")
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123 else:
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124 result = response
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125 return result, ok

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