mirror of
https://github.com/xiaoyifang/goldendict-ng.git
synced 2024-11-23 20:14:05 +00:00
112 lines
4 KiB
C++
112 lines
4 KiB
C++
#include "iframeschemehandler.h"
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#include <QTextCodec>
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IframeSchemeHandler::IframeSchemeHandler(QObject * parent):QWebEngineUrlSchemeHandler(parent){
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}
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void IframeSchemeHandler::requestStarted(QWebEngineUrlRequestJob *requestJob)
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{
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QUrl url = requestJob->requestUrl();
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// website dictionary iframe url
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url = QUrl( Utils::Url::queryItemValue( url, "url" ) );
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QNetworkRequest request;
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request.setUrl( url );
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request.setAttribute(QNetworkRequest::RedirectPolicyAttribute,QNetworkRequest::RedirectPolicy::NoLessSafeRedirectPolicy);
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QNetworkReply * reply = mgr.get( request );
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auto finishAction = [ = ]() -> void
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{
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QByteArray contentType = "text/html";
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QBuffer * buffer = new QBuffer( requestJob );
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QByteArray replyData = reply->readAll();
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QString articleString;
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QString codecName;
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auto contentTypeV = reply->header(QNetworkRequest::ContentTypeHeader);
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if(contentTypeV.isValid())
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{
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auto _ct = contentTypeV.toString();
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auto index = _ct.indexOf("charset=");
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if(index>-1){
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codecName=_ct.mid(index+QString("charset=").size());
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qDebug()<<codecName;
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}
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}
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QTextCodec * codec = QTextCodec::codecForUtfText( replyData, QTextCodec::codecForName( codecName.toUtf8() ) );
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if(codec)
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articleString = codec->toUnicode( replyData );
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else
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articleString = QString::fromUtf8(replyData);
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// Handle reply data
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// 404 response may have response body.
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if( reply->error() != QNetworkReply::NoError && articleString.isEmpty())
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{
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if(reply->error()==QNetworkReply::ContentNotFoundError){
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buffer->deleteLater();
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//work around to fix QTBUG-106573
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requestJob->redirect(url);
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return;
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}
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QString emptyHtml = QString( "<html><body>%1</body></html>" ).arg( reply->errorString() );
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buffer->setData( emptyHtml.toUtf8() );
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requestJob->reply( contentType, buffer );
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return;
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}
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// Change links from relative to absolute
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QString root = reply->url().scheme() + "://" + reply->url().host();
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QString base = root + reply->url().path();
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QRegularExpression baseTag( "<base\\s+.*?>",
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QRegularExpression::CaseInsensitiveOption | QRegularExpression::DotMatchesEverythingOption );
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QString baseTagHtml = "<base href=\"" + base + "\">";
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QString depressionFocus ="<script type=\"application/javascript\"> HTMLElement.prototype.focus=function(){console.log(\"focus() has been disabled.\");}</script>"
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"<script type=\"text/javascript\" src=\"qrc:///scripts/iframeResizer.contentWindow.min.js\"></script>"
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"<script type=\"text/javascript\" src=\"qrc:///scripts/iframe-defer.js\"></script>";
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// remove existed base tag
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articleString.remove( baseTag ) ;
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QRegularExpression headTag( "<head\\b.*?>",
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QRegularExpression::CaseInsensitiveOption
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| QRegularExpression::DotMatchesEverythingOption );
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auto match = headTag.match( articleString, 0 );
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if( match.hasMatch() )
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{
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articleString.insert( match.capturedEnd(), baseTagHtml );
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articleString.insert( match.capturedEnd(), depressionFocus );
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}
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else
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{
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// the html contain no head element
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// just insert at the beginning of the html ,and leave it at the mercy of browser(chrome webengine)
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articleString.insert( 0, baseTagHtml );
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articleString.insert( 0, depressionFocus );
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}
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if(codec)
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buffer->setData(codec->fromUnicode(articleString));
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else
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buffer->setData(articleString.toUtf8());
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#ifdef Q_OS_WIN32
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requestJob->reply(contentTypeV.toByteArray() , buffer );
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#else
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//use "text/html;charset=utf-8" will make the response html text rendered on the webpage?
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requestJob->reply(contentType , buffer );
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#endif
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};
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connect( reply, &QNetworkReply::finished, requestJob, finishAction );
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connect( requestJob, &QObject::destroyed, reply, &QObject::deleteLater );
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}
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