1 files changed, 85 insertions, 0 deletions
diff --git a/linguistic/source/translate.cxx b/linguistic/source/translate.cxx
new file mode 100644
index 0000000000..8c34107770
--- /dev/null
+++ b/linguistic/source/translate.cxx
@@ -0,0 +1,85 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <linguistic/translate.hxx>
+#include <sal/log.hxx>
+#include <curl/curl.h>
+#include <rtl/string.h>
+#include <boost/property_tree/ptree.hpp>
+#include <boost/property_tree/json_parser.hpp>
+#include <systools/curlinit.hxx>
+#include <vcl/htmltransferable.hxx>
+#include <tools/long.hxx>
+
+namespace linguistic
+{
+OString Translate(const OString& rTargetLang, const OString& rAPIUrl, const OString& rAuthKey,
+                  const OString& rData)
+{
+    constexpr tools::Long CURL_TIMEOUT = 10L;
+
+    std::unique_ptr<CURL, std::function<void(CURL*)>> curl(curl_easy_init(),
+                                                           [](CURL* p) { curl_easy_cleanup(p); });
+
+    ::InitCurl_easy(curl.get());
+
+    (void)curl_easy_setopt(curl.get(), CURLOPT_URL, rAPIUrl.getStr());
+    (void)curl_easy_setopt(curl.get(), CURLOPT_FAILONERROR, 1L);
+    (void)curl_easy_setopt(curl.get(), CURLOPT_TIMEOUT, CURL_TIMEOUT);
+
+    std::string response_body;
+    (void)curl_easy_setopt(curl.get(), CURLOPT_WRITEFUNCTION,
+                           +[](void* buffer, size_t size, size_t nmemb, void* userp) -> size_t {
+                               if (!userp)
+                                   return 0;
+                               std::string* response = static_cast<std::string*>(userp);
+                               size_t real_size = size * nmemb;
+                               response->append(static_cast<char*>(buffer), real_size);
+                               return real_size;
+                           });
+    (void)curl_easy_setopt(curl.get(), CURLOPT_WRITEDATA, static_cast<void*>(&response_body));
+    OString aLang(curl_easy_escape(curl.get(), rTargetLang.getStr(), rTargetLang.getLength()));
+    OString aAuthKey(curl_easy_escape(curl.get(), rAuthKey.getStr(), rAuthKey.getLength()));
+    OString aData(curl_easy_escape(curl.get(), rData.getStr(), rData.getLength()));
+    OString aPostData("auth_key=" + aAuthKey + "&target_lang=" + aLang + "&text=" + aData);
+
+    (void)curl_easy_setopt(curl.get(), CURLOPT_POSTFIELDS, aPostData.getStr());
+    CURLcode cc = curl_easy_perform(curl.get());
+    if (cc != CURLE_OK)
+    {
+        SAL_WARN("linguistic",
+                 "Translate: CURL perform returned with error: " << static_cast<sal_Int32>(cc));
+        return {};
+    }
+    tools::Long nStatusCode;
+    curl_easy_getinfo(curl.get(), CURLINFO_RESPONSE_CODE, &nStatusCode);
+    if (nStatusCode != 200)
+    {
+        SAL_WARN("linguistic",
+                 "Translate: CURL request returned with status code: " << nStatusCode);
+        return {};
+    }
+    // parse the response
+    boost::property_tree::ptree root;
+    std::stringstream aStream(response_body.data());
+    boost::property_tree::read_json(aStream, root);
+    boost::property_tree::ptree& translations = root.get_child("translations");
+    size_t size = translations.size();
+    if (size <= 0)
+    {
+        SAL_WARN("linguistic", "Translate: API did not return any translations");
+    }
+    // take the first one
+    const boost::property_tree::ptree& translation = translations.begin()->second;
+    const std::string text = translation.get<std::string>("text");
+    return OString(text);
+}
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */