Add the QStorageInfo class

Allows to retrieve information about mounted volumes such as label,
total/available size, filesystem type and so on.
Possible use cases are:
- allows to do checks about filesystem before performing actual
  operation (such as available/maximum volume size)
- allows to retrive information about volume that can be shown in file
  dialogs
- allows to retrieve volume for specific path and check if two or more
  paths belong to the same volume or not

[ChangeLog][QtCore] Added QStorageInfo class to retrive information
about mounted volumes and drives

Change-Id: Ibf9c2e6b53ef39c5605894a4422acdbbca4030c4
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>

1 files changed, 103 insertions, 0 deletions

diff --git a/src/corelib/io/qstorageinfo_p.h b/src/corelib/io/qstorageinfo_p.h
new file mode 100644
index 0000000000..9c8e51f475
--- /dev/null
+++ b/src/corelib/io/qstorageinfo_p.h
@@ -0,0 +1,103 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Ivan Komissarov <ABBAPOH@gmail.com>
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSTORAGEINFO_P_H
+#define QSTORAGEINFO_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qstorageinfo.h"
+
+QT_BEGIN_NAMESPACE
+
+class QStorageInfoPrivate : public QSharedData
+{
+public:
+    inline QStorageInfoPrivate() : QSharedData(),
+        bytesTotal(0), bytesFree(0), bytesAvailable(0),
+        readOnly(false), ready(false), valid(false)
+    {}
+
+    void initRootPath();
+    void doStat();
+
+    static QList<QStorageInfo> mountedVolumes();
+    static QStorageInfo root();
+
+protected:
+#if defined(Q_OS_WIN) && !defined(Q_OS_WINCE) && !defined(Q_OS_WINRT)
+    void retreiveVolumeInfo();
+    void retreiveDiskFreeSpace();
+#elif defined(Q_OS_MAC)
+    void retrievePosixInfo();
+    void retrieveUrlProperties(bool initRootPath = false);
+    void retrieveLabel();
+#elif defined(Q_OS_UNIX)
+    void retreiveVolumeInfo();
+#endif
+
+public:
+    QString rootPath;
+    QByteArray device;
+    QByteArray fileSystemType;
+    QString name;
+
+    qint64 bytesTotal;
+    qint64 bytesFree;
+    qint64 bytesAvailable;
+
+    bool readOnly;
+    bool ready;
+    bool valid;
+};
+
+QT_END_NAMESPACE
+
+#endif // QSTORAGEINFO_P_H