6 files changed, 506 insertions, 0 deletions
diff --git a/examples/network/downloadmanager/downloadmanager.cpp b/examples/network/downloadmanager/downloadmanager.cpp
new file mode 100644
index 0000000000..d58ffdf99d
--- /dev/null
+++ b/examples/network/downloadmanager/downloadmanager.cpp
@@ -0,0 +1,172 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Nokia Corporation and its Subsidiary(-ies) 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 "downloadmanager.h"
+
+#include <QFileInfo>
+#include <QNetworkRequest>
+#include <QNetworkReply>
+#include <QString>
+#include <QStringList>
+#include <QTimer>
+#include <stdio.h>
+
+DownloadManager::DownloadManager(QObject *parent)
+    : QObject(parent), downloadedCount(0), totalCount(0)
+{
+}
+
+void DownloadManager::append(const QStringList &urlList)
+{
+    foreach (QString url, urlList)
+        append(QUrl::fromEncoded(url.toLocal8Bit()));
+
+    if (downloadQueue.isEmpty())
+        QTimer::singleShot(0, this, SIGNAL(finished()));
+}
+
+void DownloadManager::append(const QUrl &url)
+{
+    if (downloadQueue.isEmpty())
+        QTimer::singleShot(0, this, SLOT(startNextDownload()));
+
+    downloadQueue.enqueue(url);
+    ++totalCount;
+}
+
+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;
+}
+
+void DownloadManager::startNextDownload()
+{
+    if (downloadQueue.isEmpty()) {
+        printf("%d/%d files downloaded successfully\n", downloadedCount, totalCount);
+        emit finished();
+        return;
+    }
+
+    QUrl url = downloadQueue.dequeue();
+
+    QString filename = saveFileName(url);
+    output.setFileName(filename);
+    if (!output.open(QIODevice::WriteOnly)) {
+        fprintf(stderr, "Problem opening save file '%s' for download '%s': %s\n",
+                qPrintable(filename), url.toEncoded().constData(),
+                qPrintable(output.errorString()));
+
+        startNextDownload();
+        return;                 // skip this download
+    }
+
+    QNetworkRequest request(url);
+    currentDownload = manager.get(request);
+    connect(currentDownload, SIGNAL(downloadProgress(qint64,qint64)),
+            SLOT(downloadProgress(qint64,qint64)));
+    connect(currentDownload, SIGNAL(finished()),
+            SLOT(downloadFinished()));
+    connect(currentDownload, SIGNAL(readyRead()),
+            SLOT(downloadReadyRead()));
+
+    // prepare the output
+    printf("Downloading %s...\n", url.toEncoded().constData());
+    downloadTime.start();
+}
+
+void DownloadManager::downloadProgress(qint64 bytesReceived, qint64 bytesTotal)
+{
+    progressBar.setStatus(bytesReceived, bytesTotal);
+
+    // calculate the download speed
+    double speed = bytesReceived * 1000.0 / downloadTime.elapsed();
+    QString unit;
+    if (speed < 1024) {
+        unit = "bytes/sec";
+    } else if (speed < 1024*1024) {
+        speed /= 1024;
+        unit = "kB/s";
+    } else {
+        speed /= 1024*1024;
+        unit = "MB/s";
+    }
+
+    progressBar.setMessage(QString::fromLatin1("%1 %2")
+                           .arg(speed, 3, 'f', 1).arg(unit));
+    progressBar.update();
+}
+
+void DownloadManager::downloadFinished()
+{
+    progressBar.clear();
+    output.close();
+
+    if (currentDownload->error()) {
+        // download failed
+        fprintf(stderr, "Failed: %s\n", qPrintable(currentDownload->errorString()));
+    } else {
+        printf("Succeeded.\n");
+        ++downloadedCount;
+    }
+
+    currentDownload->deleteLater();
+    startNextDownload();
+}
+
+void DownloadManager::downloadReadyRead()
+{
+    output.write(currentDownload->readAll());
+}
diff --git a/examples/network/downloadmanager/downloadmanager.h b/examples/network/downloadmanager/downloadmanager.h
new file mode 100644
index 0000000000..98e72b0f4c
--- /dev/null
+++ b/examples/network/downloadmanager/downloadmanager.h
@@ -0,0 +1,84 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Nokia Corporation and its Subsidiary(-ies) 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."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef DOWNLOADMANAGER_H
+#define DOWNLOADMANAGER_H
+
+#include <QFile>
+#include <QObject>
+#include <QQueue>
+#include <QTime>
+#include <QUrl>
+#include <QNetworkAccessManager>
+
+#include "textprogressbar.h"
+
+class DownloadManager: public QObject
+{
+    Q_OBJECT
+public:
+    DownloadManager(QObject *parent = 0);
+
+    void append(const QUrl &url);
+    void append(const QStringList &urlList);
+    QString saveFileName(const QUrl &url);
+
+signals:
+    void finished();
+
+private slots:
+    void startNextDownload();
+    void downloadProgress(qint64 bytesReceived, qint64 bytesTotal);
+    void downloadFinished();
+    void downloadReadyRead();
+
+private:
+    QNetworkAccessManager manager;
+    QQueue<QUrl> downloadQueue;
+    QNetworkReply *currentDownload;
+    QFile output;
+    QTime downloadTime;
+    TextProgressBar progressBar;
+
+    int downloadedCount;
+    int totalCount;
+};
+
+#endif
diff --git a/examples/network/downloadmanager/downloadmanager.pro b/examples/network/downloadmanager/downloadmanager.pro
new file mode 100644
index 0000000000..5c618cdfbf
--- /dev/null
+++ b/examples/network/downloadmanager/downloadmanager.pro
@@ -0,0 +1,22 @@
+######################################################################
+# Automatically generated by qmake (2.01a) fr. nov. 16 14:11:36 2007
+######################################################################
+
+TEMPLATE = app
+TARGET = 
+DEPENDPATH += .
+INCLUDEPATH += .
+QT = core network
+CONFIG += console
+
+# Input
+HEADERS += downloadmanager.h textprogressbar.h
+SOURCES += downloadmanager.cpp main.cpp textprogressbar.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/qtbase/network/downloadmanager
+sources.files = $$SOURCES $$HEADERS $$FORMS $$RESOURCES *.pro *.png
+sources.path = $$[QT_INSTALL_EXAMPLES]/qtbase/network/downloadmanager
+INSTALLS += target sources
+
+symbian: include($$QT_SOURCE_TREE/examples/symbianpkgrules.pri)
diff --git a/examples/network/downloadmanager/main.cpp b/examples/network/downloadmanager/main.cpp
new file mode 100644
index 0000000000..ed738472f7
--- /dev/null
+++ b/examples/network/downloadmanager/main.cpp
@@ -0,0 +1,67 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Nokia Corporation and its Subsidiary(-ies) 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 <QCoreApplication>
+#include <QStringList>
+#include "downloadmanager.h"
+#include <stdio.h>
+
+int main(int argc, char **argv)
+{
+    QCoreApplication app(argc, argv);
+    QStringList arguments = app.arguments();
+    arguments.takeFirst();      // remove the first argument, which is the program's name
+
+    if (arguments.isEmpty()) {
+        printf("Qt Download example\n"
+               "Usage: downloadmanager 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");
+        return 0;
+    }
+
+    DownloadManager manager;
+    manager.append(arguments);
+
+    QObject::connect(&manager, SIGNAL(finished()), &app, SLOT(quit()));
+    app.exec();
+}
diff --git a/examples/network/downloadmanager/textprogressbar.cpp b/examples/network/downloadmanager/textprogressbar.cpp
new file mode 100644
index 0000000000..0303752b4b
--- /dev/null
+++ b/examples/network/downloadmanager/textprogressbar.cpp
@@ -0,0 +1,98 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Nokia Corporation and its Subsidiary(-ies) 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 "textprogressbar.h"
+#include <QByteArray>
+#include <stdio.h>
+
+TextProgressBar::TextProgressBar()
+    : value(0), maximum(-1), iteration(0)
+{
+}
+
+void TextProgressBar::clear()
+{
+    printf("\n");
+    fflush(stdout);
+
+    iteration = 0;
+    value = 0;
+    maximum = -1;
+}
+
+void TextProgressBar::update()
+{
+    ++iteration;
+
+    if (maximum > 0) {
+        // we know the maximum
+        // draw a progress bar
+        int percent = value * 100 / maximum;
+        int hashes = percent / 2;
+
+        QByteArray progressbar(hashes, '#');
+        if (percent % 2)
+            progressbar += '>';
+
+        printf("\r[%-50s] %3d%% %s     ",
+               progressbar.constData(),
+               percent,
+               qPrintable(message));
+    } else {
+        // we don't know the maximum, so we can't draw a progress bar
+        int center = (iteration % 48) + 1; // 50 spaces, minus 2
+        QByteArray before(qMax(center - 2, 0), ' ');
+        QByteArray after(qMin(center + 2, 50), ' ');
+
+        printf("\r[%s###%s]      %s      ",
+               before.constData(), after.constData(), qPrintable(message));
+    }
+}
+
+void TextProgressBar::setMessage(const QString &m)
+{
+    message = m;
+}
+
+void TextProgressBar::setStatus(qint64 val, qint64 max)
+{
+    value = val;
+    maximum = max;
+}
diff --git a/examples/network/downloadmanager/textprogressbar.h b/examples/network/downloadmanager/textprogressbar.h
new file mode 100644
index 0000000000..3d2be5565a
--- /dev/null
+++ b/examples/network/downloadmanager/textprogressbar.h
@@ -0,0 +1,63 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Nokia Corporation and its Subsidiary(-ies) 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."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef TEXTPROGRESSBAR_H
+#define TEXTPROGRESSBAR_H
+
+#include <QString>
+
+class TextProgressBar
+{
+public:
+    TextProgressBar();
+
+    void clear();
+    void update();
+    void setMessage(const QString &message);
+    void setStatus(qint64 value, qint64 maximum);
+
+private:
+    QString message;
+    qint64 value;
+    qint64 maximum;
+    int iteration;
+};
+
+#endif