118 lines
3.8 KiB
C++
118 lines
3.8 KiB
C++
/**
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* @file lltranslate.cpp
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* @brief Functions for translating text via Google Translate.
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*
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* $LicenseInfo:firstyear=2009&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#include "llviewerprecompiledheaders.h"
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#include "lltranslate.h"
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#include "llbufferstream.h"
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#include "llui.h"
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#include "llversioninfo.h"
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#include "llviewercontrol.h"
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#include "json/reader.h"
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// These two are concatenated with the language specifiers to form a complete Google Translate URL
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const char* LLTranslate::m_GoogleURL = "http://ajax.googleapis.com/ajax/services/language/translate?v=1.0&q=";
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const char* LLTranslate::m_GoogleLangSpec = "&langpair=";
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float LLTranslate::m_GoogleTimeout = 5;
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LLSD LLTranslate::m_Header;
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// These constants are for the GET header.
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const char* LLTranslate::m_AcceptHeader = "Accept";
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const char* LLTranslate::m_AcceptType = "text/plain";
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const char* LLTranslate::m_AgentHeader = "User-Agent";
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// These constants are in the JSON returned from Google
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const char* LLTranslate::m_GoogleData = "responseData";
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const char* LLTranslate::m_GoogleTranslation = "translatedText";
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const char* LLTranslate::m_GoogleLanguage = "detectedSourceLanguage";
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//static
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void LLTranslate::translateMessage(LLHTTPClient::ResponderPtr &result, const std::string &from_lang, const std::string &to_lang, const std::string &mesg)
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{
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std::string url;
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getTranslateUrl(url, from_lang, to_lang, mesg);
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std::string user_agent = llformat("%s %d.%d.%d (%d)",
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LLVersionInfo::getChannel().c_str(),
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LLVersionInfo::getMajor(),
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LLVersionInfo::getMinor(),
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LLVersionInfo::getPatch(),
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LLVersionInfo::getBuild());
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if (!m_Header.size())
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{
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m_Header.insert(m_AcceptHeader, LLSD(m_AcceptType));
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m_Header.insert(m_AgentHeader, LLSD(user_agent));
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}
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LLHTTPClient::get(url, result, m_Header, m_GoogleTimeout);
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}
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//static
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void LLTranslate::getTranslateUrl(std::string &translate_url, const std::string &from_lang, const std::string &to_lang, const std::string &mesg)
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{
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std::string escaped_mesg = curl_escape(mesg.c_str(), mesg.size());
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translate_url = m_GoogleURL
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+ escaped_mesg + m_GoogleLangSpec
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+ from_lang // 'from' language; empty string for auto
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+ "%7C" // |
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+ to_lang; // 'to' language
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}
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//static
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bool LLTranslate::parseGoogleTranslate(const std::string& body, std::string &translation, std::string &detected_language)
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{
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Json::Value root;
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Json::Reader reader;
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bool success = reader.parse(body, root);
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if (!success)
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{
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LL_WARNS("Translate") << "Non valid response from Google Translate API: '" << reader.getFormatedErrorMessages() << "'" << LL_ENDL;
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return false;
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}
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translation = root[m_GoogleData].get(m_GoogleTranslation, "").asString();
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detected_language = root[m_GoogleData].get(m_GoogleLanguage, "").asString();
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return true;
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}
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//static
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std::string LLTranslate::getTranslateLanguage()
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{
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std::string language = gSavedSettings.getString("TranslateLanguage");
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if (language.empty() || language == "default")
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{
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language = LLUI::getLanguage();
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}
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language = language.substr(0,2);
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return language;
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}
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