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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** 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 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.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qplatformdefs.h"
+
+#include "qbytearray.h"
+#include "qstring.h"
+
+#include "string.h"
+
+QT_BEGIN_NAMESPACE
+
+#if !defined(QT_VSNPRINTF) || defined(Q_CLANG_QDOC)
+
+/*!
+ \relates QByteArray
+
+ A portable \c vsnprintf() function. Will call \c ::vsnprintf(), \c
+ ::_vsnprintf(), or \c ::vsnprintf_s depending on the system, or
+ fall back to an internal version.
+
+ \a fmt is the \c printf() format string. The result is put into
+ \a str, which is a buffer of at least \a n bytes.
+
+ The caller is responsible to call \c va_end() on \a ap.
+
+ \warning Since vsnprintf() shows different behavior on certain
+ platforms, you should not rely on the return value or on the fact
+ that you will always get a 0 terminated string back.
+
+ Ideally, you should never call this function but use QString::asprintf()
+ instead.
+
+ \sa qsnprintf(), QString::asprintf()
+*/
+
+int qvsnprintf(char *str, size_t n, const char *fmt, va_list ap)
+{
+ if (!str || !fmt)
+ return -1;
+
+ const QByteArray ba = QString::vasprintf(fmt, ap).toLocal8Bit();
+
+ if (n > 0) {
+ size_t blen = qMin(size_t(ba.length()), size_t(n - 1));
+ memcpy(str, ba.constData(), blen);
+ str[blen] = '\0'; // make sure str is always 0 terminated
+ }
+
+ return ba.length();
+}
+
+#else
+
+QT_BEGIN_INCLUDE_NAMESPACE
+#include <stdio.h>
+QT_END_INCLUDE_NAMESPACE
+
+int qvsnprintf(char *str, size_t n, const char *fmt, va_list ap)
+{
+ return QT_VSNPRINTF(str, n, fmt, ap);
+}
+
+#endif
+
+/*!
+ \target bytearray-qsnprintf
+ \relates QByteArray
+
+ A portable snprintf() function, calls qvsnprintf.
+
+ \a fmt is the \c printf() format string. The result is put into
+ \a str, which is a buffer of at least \a n bytes.
+
+ \warning Call this function only when you know what you are doing
+ since it shows different behavior on certain platforms.
+ Use QString::asprintf() to format a string instead.
+
+ \sa qvsnprintf(), QString::asprintf()
+*/
+
+int qsnprintf(char *str, size_t n, const char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+
+ int ret = qvsnprintf(str, n, fmt, ap);
+ va_end(ap);
+
+ return ret;
+}
+
+QT_END_NAMESPACE