1 files changed, 124 insertions, 0 deletions
diff --git a/doc/src/snippets/file/file.cpp b/doc/src/snippets/file/file.cpp
new file mode 100644
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+++ b/doc/src/snippets/file/file.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QFile>
+#include <QTextStream>
+
+static void process_line(const QByteArray &)
+{
+}
+
+static void process_line(const QString &)
+{
+}
+
+static void noStream_snippet()
+{
+//! [0]
+    QFile file("in.txt");
+    if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
+        return;
+
+    while (!file.atEnd()) {
+        QByteArray line = file.readLine();
+        process_line(line);
+    }
+//! [0]
+}
+
+static void readTextStream_snippet()
+{
+//! [1]
+    QFile file("in.txt");
+    if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
+        return;
+
+    QTextStream in(&file);
+    while (!in.atEnd()) {
+        QString line = in.readLine();
+        process_line(line);
+    }
+//! [1]
+}
+
+static void writeTextStream_snippet()
+{
+//! [2]
+    QFile file("out.txt");
+    if (!file.open(QIODevice::WriteOnly | QIODevice::Text))
+        return;
+
+    QTextStream out(&file);
+    out << "The magic number is: " << 49 << "\n";
+//! [2]
+}
+
+static void writeTextStream_snippet()
+{
+    QFile file("out.dat");
+    if (!file.open(QIODevice::WriteOnly))
+        return;
+
+    QDataStream out(&file);
+    out << "The magic number is: " << 49 << "\n";
+}
+
+static void readRegularEmptyFile_snippet()
+{
+//! [3]
+    QFile file("/proc/modules");
+    if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
+        return;
+
+    QTextStream in(&file);
+    QString line = in.readLine();
+    while (!line.isNull()) {
+        process_line(line);
+        line = in.readLine();
+    }
+//! [3]
+}
+
+int main()
+{
+    lineByLine_snippet();
+    writeStream_snippet();
+}