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

branch
eric7
changeset 9209
b99e7fd55fd3
parent 9148
b31f0d894b55
child 9221
bf71ee032bb4
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/eric7/Plugins/UiExtensionPlugins/Translator/TranslatorEngines/YandexEngine.py	Thu Jul 07 11:23:56 2022 +0200
@@ -0,0 +1,132 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2014 - 2022 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing the Yandex translation engine.
+"""
+
+import json
+
+from PyQt6.QtCore import QUrl, QByteArray, QTimer
+
+import Utilities
+
+from .TranslationEngine import TranslationEngine
+
+
+class YandexEngine(TranslationEngine):
+    """
+    Class implementing the translation engine for the Yandex
+    translation service.
+    """
+    TranslatorUrl = "https://translate.yandex.net/api/v1.5/tr.json/translate"
+    TranslatorLimit = 10000
+    
+    def __init__(self, plugin, parent=None):
+        """
+        Constructor
+        
+        @param plugin reference to the plugin object
+        @type TranslatorPlugin
+        @param parent reference to the parent object
+        @type QObject
+        """
+        super().__init__(plugin, parent)
+        
+        self.__errors = {
+            401: self.tr("Yandex: Invalid API key."),
+            402: self.tr("Yandex: API key has been blocked."),
+            403: self.tr("Yandex: Daily limit for requests has been reached."),
+            404: self.tr("Yandex: Daily limit for the volume of translated"
+                         " text reached."),
+            413: self.tr("Yandex: Text size exceeds the maximum."),
+            422: self.tr("Yandex: Text could not be translated."),
+            501: self.tr("Yandex: The specified translation direction is not"
+                         " supported."),
+        }
+        
+        QTimer.singleShot(0, self.availableTranslationsLoaded.emit)
+    
+    def engineName(self):
+        """
+        Public method to return the name of the engine.
+        
+        @return engine name
+        @rtype str
+        """
+        return "yandex"
+    
+    def supportedLanguages(self):
+        """
+        Public method to get the supported languages.
+        
+        @return list of supported language codes
+        @rtype list of str
+        """
+        return ["ar", "be", "bg", "bs", "ca", "cs", "da", "de", "el", "en",
+                "es", "et", "fi", "fr", "ga", "gl", "hi", "hr", "hu", "id",
+                "is", "it", "iw", "ja", "ka", "ko", "lt", "lv", "mk", "mt",
+                "nl", "no", "pl", "pt", "ro", "ru", "sk", "sl", "sq", "sr",
+                "sv", "th", "tl", "tr", "uk", "vi", "zh-CN", "zh-TW",
+                ]
+    
+    def getTranslation(self, requestObject, text, originalLanguage,
+                       translationLanguage):
+        """
+        Public method to translate the given text.
+        
+        @param requestObject reference to the request object
+        @type TranslatorRequest
+        @param text text to be translated
+        @type str
+        @param originalLanguage language code of the original
+        @type str
+        @param translationLanguage language code of the translation
+        @type str
+        @return tuple of translated text and flag indicating success
+        @rtype tuple of (str, bool)
+        """
+        if len(text) > self.TranslatorLimit:
+            return (
+                self.tr("Yandex: Only texts up to {0} characters are allowed.")
+                .format(self.TranslatorLimit),
+                False
+            )
+        
+        apiKey = self.plugin.getPreferences("YandexKey")
+        if not apiKey:
+            return self.tr("Yandex: A valid key is required."), False
+        
+        params = QByteArray(
+            "key={0}&lang={1}-{2}&text=".format(
+                apiKey, originalLanguage, translationLanguage).encode("utf-8"))
+        encodedText = (
+            QByteArray(Utilities.html_encode(text).encode("utf-8"))
+            .toPercentEncoding()
+        )
+        request = params + encodedText
+        response, ok = requestObject.post(QUrl(self.TranslatorUrl), request)
+        if ok:
+            try:
+                responseDict = json.loads(response)
+            except ValueError:
+                return self.tr("Yandex: Invalid response received"), False
+            
+            if responseDict["code"] != 200:
+                try:
+                    error = self.__errors[responseDict["code"]]
+                except KeyError:
+                    error = self.tr(
+                        "Yandex: Unknown error code ({0}) received."
+                    ).format(responseDict["code"])
+                return error, False
+            
+            sentences = responseDict["text"]
+            result = ""
+            for sentence in sentences:
+                result += sentence.replace("\n", "<br/>")
+        else:
+            result = response
+        return result, ok

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