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312 lines
11 KiB
C++
312 lines
11 KiB
C++
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/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QtDeclarative module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qdeclarativeinclude_p.h"
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#include <QtScript/qscriptengine.h>
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#include <QtNetwork/qnetworkrequest.h>
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#include <QtNetwork/qnetworkreply.h>
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#include <QtCore/qfile.h>
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#include <qdeclarativeengine_p.h>
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#include <qdeclarativeglobalscriptclass_p.h>
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QT_BEGIN_NAMESPACE
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QDeclarativeInclude::QDeclarativeInclude(const QUrl &url,
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QDeclarativeEngine *engine,
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QScriptContext *ctxt)
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: QObject(engine), m_engine(engine), m_network(0), m_reply(0), m_url(url), m_redirectCount(0)
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{
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QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(engine);
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m_context = ep->contextClass->contextFromValue(QScriptDeclarativeClass::scopeChainValue(ctxt, -3));
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m_scope[0] = QScriptDeclarativeClass::scopeChainValue(ctxt, -4);
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m_scope[1] = QScriptDeclarativeClass::scopeChainValue(ctxt, -5);
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m_scriptEngine = QDeclarativeEnginePrivate::getScriptEngine(engine);
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m_network = QDeclarativeScriptEngine::get(m_scriptEngine)->networkAccessManager();
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m_result = resultValue(m_scriptEngine);
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QNetworkRequest request;
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request.setUrl(url);
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m_reply = m_network->get(request);
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QObject::connect(m_reply, SIGNAL(finished()), this, SLOT(finished()));
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}
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QDeclarativeInclude::~QDeclarativeInclude()
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{
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delete m_reply;
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}
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QScriptValue QDeclarativeInclude::resultValue(QScriptEngine *engine, Status status)
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{
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QScriptValue result = engine->newObject();
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result.setProperty(QLatin1String("OK"), QScriptValue(engine, Ok));
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result.setProperty(QLatin1String("LOADING"), QScriptValue(engine, Loading));
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result.setProperty(QLatin1String("NETWORK_ERROR"), QScriptValue(engine, NetworkError));
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result.setProperty(QLatin1String("EXCEPTION"), QScriptValue(engine, Exception));
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result.setProperty(QLatin1String("status"), QScriptValue(engine, status));
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return result;
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}
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QScriptValue QDeclarativeInclude::result() const
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{
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return m_result;
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}
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void QDeclarativeInclude::setCallback(const QScriptValue &c)
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{
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m_callback = c;
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}
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QScriptValue QDeclarativeInclude::callback() const
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{
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return m_callback;
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}
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#define INCLUDE_MAXIMUM_REDIRECT_RECURSION 15
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void QDeclarativeInclude::finished()
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{
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m_redirectCount++;
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if (m_redirectCount < INCLUDE_MAXIMUM_REDIRECT_RECURSION) {
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QVariant redirect = m_reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
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if (redirect.isValid()) {
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m_url = m_url.resolved(redirect.toUrl());
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delete m_reply;
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QNetworkRequest request;
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request.setUrl(m_url);
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m_reply = m_network->get(request);
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QObject::connect(m_reply, SIGNAL(finished()), this, SLOT(finished()));
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return;
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}
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}
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if (m_reply->error() == QNetworkReply::NoError) {
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QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(m_engine);
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QByteArray data = m_reply->readAll();
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QString code = QString::fromUtf8(data);
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QString urlString = m_url.toString();
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QScriptContext *scriptContext = QScriptDeclarativeClass::pushCleanContext(m_scriptEngine);
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scriptContext->pushScope(ep->contextClass->newUrlContext(m_context, 0, urlString));
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scriptContext->pushScope(m_scope[0]);
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scriptContext->pushScope(m_scope[1]);
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scriptContext->setActivationObject(m_scope[1]);
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QDeclarativeScriptParser::extractPragmas(code);
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m_scriptEngine->evaluate(code, urlString, 1);
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m_scriptEngine->popContext();
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if (m_scriptEngine->hasUncaughtException()) {
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m_result.setProperty(QLatin1String("status"), QScriptValue(m_scriptEngine, Exception));
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m_result.setProperty(QLatin1String("exception"), m_scriptEngine->uncaughtException());
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m_scriptEngine->clearExceptions();
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} else {
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m_result.setProperty(QLatin1String("status"), QScriptValue(m_scriptEngine, Ok));
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}
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} else {
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m_result.setProperty(QLatin1String("status"), QScriptValue(m_scriptEngine, NetworkError));
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}
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callback(m_scriptEngine, m_callback, m_result);
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disconnect();
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deleteLater();
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}
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void QDeclarativeInclude::callback(QScriptEngine *engine, QScriptValue &callback, QScriptValue &status)
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{
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if (callback.isValid()) {
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QScriptValue args = engine->newArray(1);
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args.setProperty(0, status);
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callback.call(QScriptValue(), args);
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}
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}
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/*
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Documented in qdeclarativeengine.cpp
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*/
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QScriptValue QDeclarativeInclude::include(QScriptContext *ctxt, QScriptEngine *engine)
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{
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if (ctxt->argumentCount() == 0)
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return engine->undefinedValue();
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QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(engine);
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QUrl contextUrl = ep->contextClass->urlFromValue(QScriptDeclarativeClass::scopeChainValue(ctxt, -3));
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if (contextUrl.isEmpty())
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return ctxt->throwError(QLatin1String("Qt.include(): Can only be called from JavaScript files"));
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QString urlString = ctxt->argument(0).toString();
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QUrl url(urlString);
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if (url.isRelative()) {
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url = QUrl(contextUrl).resolved(url);
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urlString = url.toString();
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}
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QString localFile = QDeclarativeEnginePrivate::urlToLocalFileOrQrc(url);
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QScriptValue func = ctxt->argument(1);
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if (!func.isFunction())
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func = QScriptValue();
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QScriptValue result;
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if (localFile.isEmpty()) {
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QDeclarativeInclude *i =
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new QDeclarativeInclude(url, QDeclarativeEnginePrivate::getEngine(engine), ctxt);
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if (func.isValid())
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i->setCallback(func);
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result = i->result();
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} else {
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QFile f(localFile);
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if (f.open(QIODevice::ReadOnly)) {
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QByteArray data = f.readAll();
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QString code = QString::fromUtf8(data);
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QDeclarativeContextData *context =
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ep->contextClass->contextFromValue(QScriptDeclarativeClass::scopeChainValue(ctxt, -3));
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QScriptContext *scriptContext = QScriptDeclarativeClass::pushCleanContext(engine);
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scriptContext->pushScope(ep->contextClass->newUrlContext(context, 0, urlString));
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scriptContext->pushScope(ep->globalClass->staticGlobalObject());
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QScriptValue scope = QScriptDeclarativeClass::scopeChainValue(ctxt, -5);
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scriptContext->pushScope(scope);
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scriptContext->setActivationObject(scope);
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QDeclarativeScriptParser::extractPragmas(code);
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engine->evaluate(code, urlString, 1);
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engine->popContext();
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if (engine->hasUncaughtException()) {
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result = resultValue(engine, Exception);
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result.setProperty(QLatin1String("exception"), engine->uncaughtException());
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engine->clearExceptions();
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} else {
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result = resultValue(engine, Ok);
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}
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callback(engine, func, result);
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} else {
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result = resultValue(engine, NetworkError);
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callback(engine, func, result);
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}
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}
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return result;
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}
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QScriptValue QDeclarativeInclude::worker_include(QScriptContext *ctxt, QScriptEngine *engine)
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{
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if (ctxt->argumentCount() == 0)
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return engine->undefinedValue();
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QString urlString = ctxt->argument(0).toString();
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QUrl url(ctxt->argument(0).toString());
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if (url.isRelative()) {
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QString contextUrl = QScriptDeclarativeClass::scopeChainValue(ctxt, -3).data().toString();
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Q_ASSERT(!contextUrl.isEmpty());
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url = QUrl(contextUrl).resolved(url);
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urlString = url.toString();
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}
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QString localFile = QDeclarativeEnginePrivate::urlToLocalFileOrQrc(url);
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QScriptValue func = ctxt->argument(1);
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if (!func.isFunction())
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func = QScriptValue();
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QScriptValue result;
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if (!localFile.isEmpty()) {
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QFile f(localFile);
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if (f.open(QIODevice::ReadOnly)) {
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QByteArray data = f.readAll();
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QString code = QString::fromUtf8(data);
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QScriptContext *scriptContext = QScriptDeclarativeClass::pushCleanContext(engine);
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QScriptValue urlContext = engine->newObject();
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urlContext.setData(QScriptValue(engine, urlString));
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scriptContext->pushScope(urlContext);
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QScriptValue scope = QScriptDeclarativeClass::scopeChainValue(ctxt, -4);
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scriptContext->pushScope(scope);
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scriptContext->setActivationObject(scope);
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QDeclarativeScriptParser::extractPragmas(code);
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engine->evaluate(code, urlString, 1);
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engine->popContext();
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if (engine->hasUncaughtException()) {
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result = resultValue(engine, Exception);
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result.setProperty(QLatin1String("exception"), engine->uncaughtException());
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engine->clearExceptions();
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} else {
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result = resultValue(engine, Ok);
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}
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callback(engine, func, result);
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} else {
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result = resultValue(engine, NetworkError);
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callback(engine, func, result);
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}
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}
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return result;
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}
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QT_END_NAMESPACE
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#include <moc_qdeclarativeinclude_p.h>
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