Textractor/extensions/devtoolsdeepltranslate.cpp
zeheyler 6b54ec0733 add devtools api and new deepl extension
Added the DevTools API and the wrapper with  the use of the QtWebSockets library.
Added a new DeepL extension which uses the DevTools API.
2020-10-14 03:37:03 +03:00

196 lines
5.8 KiB
C++

#include "qtcommon.h"
#include "extension.h"
#include "network.h"
#include "devtools.h"
extern const wchar_t* TRANSLATION_ERROR;
extern Synchronized<std::wstring> translateTo;
bool useCache = true, autostartchrome = false, headlesschrome = true;
int maxSentenceSize = 500, chromeport = 9222;
const char* TRANSLATION_PROVIDER = "DevTools DeepL Translate";
QString URL = "https://www.deepl.com/en/translator";
QStringList languages
{
"Chinese (simplified): zh",
"Dutch: nl",
"English: en",
"French: fr",
"German: de",
"Italian: it",
"Japanese: ja",
"Polish: pl",
"Portuguese: pt",
"Russian: ru",
"Spanish: es",
};
int docfound = -1;
int targetNodeId = -1;
int session = -1;
std::pair<bool, std::wstring> Translate(const std::wstring& text, DevTools* devtools)
{
if (devtools->getStatus() == "Stopped")
{
return { false, FormatString(L"Error: chrome not started") };
}
if ((devtools->getStatus().startsWith("Fail")) || (devtools->getStatus().startsWith("Unconnected")))
{
return { false, FormatString(L"Error: %s", S(devtools->getStatus())) };
}
if (session != devtools->getSession())
{
session = devtools->getSession();
docfound = -1;
targetNodeId = -1;
}
QString qtext = S(text);
// Check text for repeated symbols (e.g. only ellipsis)
if (qtext.length() > 2)
for (int i = 1; i < (qtext.length() - 1); i++)
{
if (qtext[i] != qtext[1])
break;
if ((i + 2) == qtext.length() && (qtext.front() == qtext.back()))
{
return { false, text };
}
}
// Add spaces near ellipsis for better translation and check for quotes
qtext.replace(QRegularExpression("[" + QString(8230) + "]" + "[" + QString(8230) + "]" + "[" + QString(8230) + "]"), QString(8230));
qtext.replace(QRegularExpression("[" + QString(8230) + "]" + "[" + QString(8230) + "]"), QString(8230));
qtext.replace(QRegularExpression("[" + QString(8230) + "]"), " " + QString(8230) + " ");
bool checkquote = false;
if ((qtext.front() == QString(12300)) && (qtext.back() == QString(12301)))
{
checkquote = true;
qtext.remove(0, 1);
qtext.chop(1);
}
QJsonObject root;
QJsonObject result;
// Enable page feedback
if (!devtools->SendRequest("Page.enable", {}, root))
{
return { false, FormatString(L"Error: page enable failed! %s", TRANSLATION_ERROR) };
}
// Navigate to site
QString fullurl = URL + "#ja/" + S(translateTo.Copy()) + "/" + qtext;
devtools->setNavigated(false);
devtools->setTranslate(false);
if (devtools->SendRequest("Page.navigate", { {"url", fullurl} }, root))
{
// Wait until page is loaded
float timer = 0;
int timer_stop = 10;
while (!devtools->getNavigated() && timer < timer_stop)
{
std::this_thread::sleep_for(std::chrono::milliseconds(100));
timer += 0.1;
}
if (timer >= timer_stop)
{
return { false, FormatString(L"Error: page load timeout %d s! %s", timer_stop, TRANSLATION_ERROR) };
}
QString OuterHTML("<div></div>");
// Get document
if (docfound == -1)
{
if (!devtools->SendRequest("DOM.getDocument", {}, root))
{
docfound = -1;
return { false, FormatString(L"Error: getDocument failed! %s", TRANSLATION_ERROR) };
}
docfound = root.value("result").toObject().value("root").toObject().value("nodeId").toInt();
}
//Get target selector
if (targetNodeId == -1)
{
if (!(devtools->SendRequest("DOM.querySelector", { {"nodeId", docfound}, {"selector", "textarea.lmt__target_textarea"} }, root))
|| (root.value("result").toObject().value("nodeId").toInt() == 0))
{
docfound = -1;
return { false, FormatString(L"Error: querySelector result failed! %s", TRANSLATION_ERROR) };
}
targetNodeId = root.value("result").toObject().value("nodeId").toInt();
}
// Wait for translation to appear on the web page
timer = 0;
while (!devtools->getTranslate() && timer < timer_stop)
{
std::this_thread::sleep_for(std::chrono::milliseconds(100));
timer += 0.1;
}
if (timer >= timer_stop)
{
// Catch notification if timeout
int noteNodeId = -1;
if (!(devtools->SendRequest("DOM.querySelector", { {"nodeId", docfound}, {"selector", "div.lmt__system_notification"} }, root))
|| (root.value("result").toObject().value("nodeId").toInt() == 0))
{
return { false, FormatString(L"Error: result timeout %d s! %s", timer_stop, TRANSLATION_ERROR) };
}
noteNodeId = root.value("result").toObject().value("nodeId").toInt();
if (devtools->SendRequest("DOM.getOuterHTML", { {"nodeId", noteNodeId + 1} }, root))
{
OuterHTML = root.value("result").toObject().value("outerHTML").toString();
OuterHTML.remove(QRegExp("<[^>]*>"));
OuterHTML = OuterHTML.trimmed();
}
else
{
OuterHTML = "Could not get notification";
}
return { false, FormatString(L"Error: got notification from translator: %s", S(OuterHTML)) };
}
// Catch the translation
devtools->SendRequest("DOM.getOuterHTML", { {"nodeId", targetNodeId + 1} }, root);
result = root.value("result").toObject();
OuterHTML = result.value("outerHTML").toString();
OuterHTML.remove(QRegExp("<[^>]*>"));
OuterHTML = OuterHTML.trimmed();
// Check if the translator output language does not match the selected language
if (devtools->SendRequest("DOM.getAttributes", { {"nodeId", targetNodeId} }, root))
{
QJsonObject result = root.value("result").toObject();
QJsonArray attributes = result.value("attributes").toArray();
for (size_t i = 0; i < attributes.size(); i++)
{
if (attributes[i].toString() == "lang")
{
QString targetlang = attributes[i + 1].toString().mid(0, 2);
if (targetlang != S(translateTo.Copy()))
{
return { false, FormatString(L"Error: target langs do not match (%s): %s", S(targetlang), S(OuterHTML)) };
}
}
}
}
// Get quotes back
if (checkquote)
{
OuterHTML = "\"" + OuterHTML + "\"";
}
return { true, S(OuterHTML) };
}
else
{
return { false, FormatString(L"Error: navigate failed! %s", TRANSLATION_ERROR) };
}
}