/**************************************************************************** ** ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved. ** ** This file is part of the QtCore module of the Qt Toolkit. ** ** This file may be used under the terms of the GNU General Public ** License version 2.0 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 GNU ** General Public Licensing requirements will be met: ** http://trolltech.com/products/qt/licenses/licensing/opensource/ ** ** If you are unsure which license is appropriate for your use, please ** review the following information: ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview ** or contact the sales department at sales@trolltech.com. ** ** In addition, as a special exception, Trolltech gives you certain ** additional rights. These rights are described in the Trolltech GPL ** Exception version 1.0, which can be found at ** http://www.trolltech.com/products/qt/gplexception/ and in the file ** GPL_EXCEPTION.txt in this package. ** ** In addition, as a special exception, Trolltech, as the sole copyright ** holder for Qt Designer, grants users of the Qt/Eclipse Integration ** plug-in the right for the Qt/Eclipse Integration to link to ** functionality provided by Qt Designer and its related libraries. ** ** Trolltech reserves all rights not expressly granted herein. ** ** Trolltech ASA (c) 2007 ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ****************************************************************************/ #include "qplatformdefs.h" #include "qbytearray.h" #include "qstring.h" #include "string.h" #ifndef QT_VSNPRINTF /*! \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::sprintf() instead. \sa qsnprintf(), QString::sprintf() */ int qvsnprintf(char *str, size_t n, const char *fmt, va_list ap) { if (!str || !fmt) return -1; QString buf; buf.vsprintf(fmt, ap); QByteArray ba = buf.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 #include int qvsnprintf(char *str, size_t n, const char *fmt, va_list ap) { return QT_VSNPRINTF(str, n, fmt, ap); } #endif /*! \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::sprintf() to format a string instead. \sa qvsnprintf(), QString::sprintf() */ 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; }