1 files changed, 123 insertions, 0 deletions
diff --git a/doc/src/snippets/file/file.cpp b/doc/src/snippets/file/file.cpp
new file mode 100644
index 0000000000..ede4aa97d2
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+++ b/doc/src/snippets/file/file.cpp
@@ -0,0 +1,123 @@
+/****************************************************************************
+**
+** 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 documentation 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 <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();
+}