src/eric7/Plugins/UiExtensionPlugins/Translator/TranslatorEngines/YandexEngine.py

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eric7
changeset 9209
b99e7fd55fd3
parent 9148
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9208:3fc8dfeb6ebe 9209:b99e7fd55fd3
1 # -*- coding: utf-8 -*-
2
3 # Copyright (c) 2014 - 2022 Detlev Offenbach <detlev@die-offenbachs.de>
4 #
5
6 """
7 Module implementing the Yandex translation engine.
8 """
9
10 import json
11
12 from PyQt6.QtCore import QUrl, QByteArray, QTimer
13
14 import Utilities
15
16 from .TranslationEngine import TranslationEngine
17
18
19 class YandexEngine(TranslationEngine):
20 """
21 Class implementing the translation engine for the Yandex
22 translation service.
23 """
24 TranslatorUrl = "https://translate.yandex.net/api/v1.5/tr.json/translate"
25 TranslatorLimit = 10000
26
27 def __init__(self, plugin, parent=None):
28 """
29 Constructor
30
31 @param plugin reference to the plugin object
32 @type TranslatorPlugin
33 @param parent reference to the parent object
34 @type QObject
35 """
36 super().__init__(plugin, parent)
37
38 self.__errors = {
39 401: self.tr("Yandex: Invalid API key."),
40 402: self.tr("Yandex: API key has been blocked."),
41 403: self.tr("Yandex: Daily limit for requests has been reached."),
42 404: self.tr("Yandex: Daily limit for the volume of translated"
43 " text reached."),
44 413: self.tr("Yandex: Text size exceeds the maximum."),
45 422: self.tr("Yandex: Text could not be translated."),
46 501: self.tr("Yandex: The specified translation direction is not"
47 " supported."),
48 }
49
50 QTimer.singleShot(0, self.availableTranslationsLoaded.emit)
51
52 def engineName(self):
53 """
54 Public method to return the name of the engine.
55
56 @return engine name
57 @rtype str
58 """
59 return "yandex"
60
61 def supportedLanguages(self):
62 """
63 Public method to get the supported languages.
64
65 @return list of supported language codes
66 @rtype list of str
67 """
68 return ["ar", "be", "bg", "bs", "ca", "cs", "da", "de", "el", "en",
69 "es", "et", "fi", "fr", "ga", "gl", "hi", "hr", "hu", "id",
70 "is", "it", "iw", "ja", "ka", "ko", "lt", "lv", "mk", "mt",
71 "nl", "no", "pl", "pt", "ro", "ru", "sk", "sl", "sq", "sr",
72 "sv", "th", "tl", "tr", "uk", "vi", "zh-CN", "zh-TW",
73 ]
74
75 def getTranslation(self, requestObject, text, originalLanguage,
76 translationLanguage):
77 """
78 Public method to translate the given text.
79
80 @param requestObject reference to the request object
81 @type TranslatorRequest
82 @param text text to be translated
83 @type str
84 @param originalLanguage language code of the original
85 @type str
86 @param translationLanguage language code of the translation
87 @type str
88 @return tuple of translated text and flag indicating success
89 @rtype tuple of (str, bool)
90 """
91 if len(text) > self.TranslatorLimit:
92 return (
93 self.tr("Yandex: Only texts up to {0} characters are allowed.")
94 .format(self.TranslatorLimit),
95 False
96 )
97
98 apiKey = self.plugin.getPreferences("YandexKey")
99 if not apiKey:
100 return self.tr("Yandex: A valid key is required."), False
101
102 params = QByteArray(
103 "key={0}&lang={1}-{2}&text=".format(
104 apiKey, originalLanguage, translationLanguage).encode("utf-8"))
105 encodedText = (
106 QByteArray(Utilities.html_encode(text).encode("utf-8"))
107 .toPercentEncoding()
108 )
109 request = params + encodedText
110 response, ok = requestObject.post(QUrl(self.TranslatorUrl), request)
111 if ok:
112 try:
113 responseDict = json.loads(response)
114 except ValueError:
115 return self.tr("Yandex: Invalid response received"), False
116
117 if responseDict["code"] != 200:
118 try:
119 error = self.__errors[responseDict["code"]]
120 except KeyError:
121 error = self.tr(
122 "Yandex: Unknown error code ({0}) received."
123 ).format(responseDict["code"])
124 return error, False
125
126 sentences = responseDict["text"]
127 result = ""
128 for sentence in sentences:
129 result += sentence.replace("\n", "<br/>")
130 else:
131 result = response
132 return result, ok

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