104 lines
4.0 KiB
C++
104 lines
4.0 KiB
C++
#include "qtcommon.h"
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#include "network.h"
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#include <random>
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extern const wchar_t* TRANSLATION_ERROR;
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extern const char* USE_PREV_SENTENCE_CONTEXT;
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extern Synchronized<std::wstring> translateTo, translateFrom, authKey;
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const char* TRANSLATION_PROVIDER = "DeepL Translate";
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const char* GET_API_KEY_FROM = "https://www.deepl.com/pro.html";
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QStringList languages
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{
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"Chinese (simplified): ZH",
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"Dutch: NL",
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"English: EN",
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"French: FR",
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"German: DE",
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"Italian: IT",
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"Japanese: JA",
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"Polish: PL",
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"Portuguese: PT",
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"Russian: RU",
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"Spanish: ES",
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};
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std::wstring autoDetectLanguage = L"auto";
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bool translateSelectedOnly = true, rateLimitAll = true, rateLimitSelected = true, useCache = true;
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int tokenCount = 10, tokenRestoreDelay = 60000, maxSentenceSize = 1000;
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enum KeyType { CAT, REST };
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int keyType = CAT;
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std::pair<bool, std::wstring> Translate(const std::wstring& text)
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{
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if (!authKey->empty())
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{
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std::string translateFromComponent = translateFrom.Copy() == autoDetectLanguage ? "" : "&source_lang=" + WideStringToString(translateFrom.Copy());
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if (HttpRequest httpRequest{
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L"Mozilla/5.0 Textractor",
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L"api.deepl.com",
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L"POST",
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keyType == CAT ? L"/v1/translate" : L"/v2/translate",
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FormatString("text=%S&auth_key=%S&target_lang=%S", Escape(text), authKey.Copy(), translateTo.Copy()) + translateFromComponent,
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L"Content-Type: application/x-www-form-urlencoded"
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}; httpRequest && (!httpRequest.response.empty() || (httpRequest = HttpRequest{
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L"Mozilla/5.0 Textractor",
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L"api.deepl.com",
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L"POST",
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(keyType = !keyType) == CAT ? L"/v1/translate" : L"/v2/translate",
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FormatString("text=%S&auth_key=%S&target_lang=%S", Escape(text), authKey.Copy(), translateTo.Copy()) + translateFromComponent,
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L"Content-Type: application/x-www-form-urlencoded"
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})))
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// Response formatted as JSON: translation starts with text":" and ends with "}]
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if (auto translation = Copy(JSON::Parse(httpRequest.response)[L"translations"][0][L"text"].String())) return { true, translation.value() };
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else return { false, FormatString(L"%s: %s", TRANSLATION_ERROR, httpRequest.response) };
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else return { false, FormatString(L"%s (code=%u)", TRANSLATION_ERROR, httpRequest.errorCode) };
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}
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// the following code was reverse engineered from the DeepL website; it's as close as I could make it but I'm not sure what parts of this could be removed and still have it work
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int64_t r = _time64(nullptr), n = std::count(text.begin(), text.end(), L'i') + 1;
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thread_local auto generator = std::mt19937(std::random_device()());
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int id = 10000 * std::uniform_int_distribution(0, 9999)(generator) + 1;
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// user_preferred_langs? what should priority be? does timestamp do anything? other translation quality options?
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auto body = FormatString(R"(
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{
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"id": %d,
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"jsonrpc": "2.0",
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"method": "LMT_handle_jobs",
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"params": {
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"priority": -1,
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"timestamp": %lld,
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"lang": {
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"target_lang": "%S",
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"source_lang_user_selected": "%S"
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},
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"jobs": [{
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"raw_en_sentence": "%s",
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"raw_en_context_before": [],
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"kind": "default",
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"preferred_num_beams": 1,
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"quality": "fast",
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"raw_en_context_after": []
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}]
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}
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}
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)", id, r + (n - r % n), translateTo.Copy(), translateFrom.Copy(), JSON::Escape(WideStringToString(text)));
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// missing accept-encoding header since it fucks up HttpRequest
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if (HttpRequest httpRequest{
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L"Mozilla/5.0 Textractor",
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L"www2.deepl.com",
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L"POST",
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L"/jsonrpc",
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body,
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L"Host: www2.deepl.com\r\nAccept-Language: en-US,en;q=0.5\r\nContent-type: application/json; charset=utf-8\r\nOrigin: https://www.deepl.com\r\nTE: Trailers",
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INTERNET_DEFAULT_PORT,
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L"https://www.deepl.com/translator",
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WINHTTP_FLAG_SECURE
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})
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if (auto translation = Copy(JSON::Parse(httpRequest.response)[L"result"][L"translations"][0][L"beams"][0][L"postprocessed_sentence"].String())) return { true, translation.value() };
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else return { false, FormatString(L"%s: %s", TRANSLATION_ERROR, httpRequest.response) };
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else return { false, FormatString(L"%s (code=%u)", TRANSLATION_ERROR, httpRequest.errorCode) };
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}
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