kdelibs/kdecore/util/krandom.cpp

/* This file is part of the KDE libraries
    Copyright (c) 1999 Matthias Kalle Dalheimer <kalle@kde.org>
    Copyright (c) 2000 Charles Samuels <charles@kde.org>
    Copyright (c) 2005 Joseph Wenninger <kde@jowenn.at>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
        */

#include "krandom.h"

QString KRandom::randomString(int length)
{
    if (length <= 0)
        return QString();

    QString str(length, Qt::Uninitialized);
    static const char rndstrchars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
    for (int i = 0; i < length; i++) {
        str[i] = rndstrchars[random() % 62];
    }

   return str;
}