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Diffstat (limited to 'examples/network/download/main.cpp')
| -rw-r--r-- | examples/network/download/main.cpp | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/examples/network/download/main.cpp b/examples/network/download/main.cpp deleted file mode 100644 index 74a1ad0161..0000000000 --- a/examples/network/download/main.cpp +++ /dev/null @@ -1,213 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2017 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <QtCore> -#include <QtNetwork> - -#include <cstdio> - -QT_BEGIN_NAMESPACE -class QSslError; -QT_END_NAMESPACE - -using namespace std; - -class DownloadManager: public QObject -{ - Q_OBJECT - QNetworkAccessManager manager; - QList<QNetworkReply *> currentDownloads; - -public: - DownloadManager(); - void doDownload(const QUrl &url); - static QString saveFileName(const QUrl &url); - bool saveToDisk(const QString &filename, QIODevice *data); - static bool isHttpRedirect(QNetworkReply *reply); - -public slots: - void execute(); - void downloadFinished(QNetworkReply *reply); - void sslErrors(const QList<QSslError> &errors); -}; - -DownloadManager::DownloadManager() -{ - connect(&manager, &QNetworkAccessManager::finished, - this, &DownloadManager::downloadFinished); -} - -void DownloadManager::doDownload(const QUrl &url) -{ - QNetworkRequest request(url); - QNetworkReply *reply = manager.get(request); - -#if QT_CONFIG(ssl) - connect(reply, &QNetworkReply::sslErrors, - this, &DownloadManager::sslErrors); -#endif - - currentDownloads.append(reply); -} - -QString DownloadManager::saveFileName(const QUrl &url) -{ - QString path = url.path(); - QString basename = QFileInfo(path).fileName(); - - if (basename.isEmpty()) - basename = "download"; - - if (QFile::exists(basename)) { - // already exists, don't overwrite - int i = 0; - basename += '.'; - while (QFile::exists(basename + QString::number(i))) - ++i; - - basename += QString::number(i); - } - - return basename; -} - -bool DownloadManager::saveToDisk(const QString &filename, QIODevice *data) -{ - QFile file(filename); - if (!file.open(QIODevice::WriteOnly)) { - fprintf(stderr, "Could not open %s for writing: %s\n", - qPrintable(filename), - qPrintable(file.errorString())); - return false; - } - - file.write(data->readAll()); - file.close(); - - return true; -} - -bool DownloadManager::isHttpRedirect(QNetworkReply *reply) -{ - int statusCode = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt(); - return statusCode == 301 || statusCode == 302 || statusCode == 303 - || statusCode == 305 || statusCode == 307 || statusCode == 308; -} - -void DownloadManager::execute() -{ - QStringList args = QCoreApplication::instance()->arguments(); - args.takeFirst(); // skip the first argument, which is the program's name - if (args.isEmpty()) { - printf("Qt Download example - downloads all URLs in parallel\n" - "Usage: download url1 [url2... urlN]\n" - "\n" - "Downloads the URLs passed in the command-line to the local directory\n" - "If the target file already exists, a .0, .1, .2, etc. is appended to\n" - "differentiate.\n"); - QCoreApplication::instance()->quit(); - return; - } - - for (const QString &arg : qAsConst(args)) { - QUrl url = QUrl::fromEncoded(arg.toLocal8Bit()); - doDownload(url); - } -} - -void DownloadManager::sslErrors(const QList<QSslError> &sslErrors) -{ -#if QT_CONFIG(ssl) - for (const QSslError &error : sslErrors) - fprintf(stderr, "SSL error: %s\n", qPrintable(error.errorString())); -#else - Q_UNUSED(sslErrors); -#endif -} - -void DownloadManager::downloadFinished(QNetworkReply *reply) -{ - QUrl url = reply->url(); - if (reply->error()) { - fprintf(stderr, "Download of %s failed: %s\n", - url.toEncoded().constData(), - qPrintable(reply->errorString())); - } else { - if (isHttpRedirect(reply)) { - fputs("Request was redirected.\n", stderr); - } else { - QString filename = saveFileName(url); - if (saveToDisk(filename, reply)) { - printf("Download of %s succeeded (saved to %s)\n", - url.toEncoded().constData(), qPrintable(filename)); - } - } - } - - currentDownloads.removeAll(reply); - reply->deleteLater(); - - if (currentDownloads.isEmpty()) { - // all downloads finished - QCoreApplication::instance()->quit(); - } -} - -int main(int argc, char **argv) -{ - QCoreApplication app(argc, argv); - - DownloadManager manager; - QTimer::singleShot(0, &manager, SLOT(execute())); - - app.exec(); -} - -#include "main.moc" |