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53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
/* This file is part of the KDE libraries
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Copyright (C) 2022 Ivailo Monev <xakepa10@gmail.com>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License version 2, as published by the Free Software Foundation.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "config.h"
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#include "krandom.h"
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#include "kdebug.h"
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#if defined(HAVE_ARC4RANDOM_UNIFORM)
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# include <stdlib.h>
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#endif
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int KRandom::randomMax(int max)
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{
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if (Q_UNLIKELY(max <= 0)) {
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kWarning() << "Maximum value must be greater than zero";
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return 0;
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}
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#if defined(HAVE_ARC4RANDOM_UNIFORM)
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return ::arc4random_uniform(max);
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#else
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return KRandom::random() % max;
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#endif
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}
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QString KRandom::randomString(int length)
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{
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if (length <= 0) {
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return QString();
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}
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QString str(length, Qt::Uninitialized);
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static const char rndstrchars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
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for (int i = 0; i < length; i++) {
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str[i] = rndstrchars[KRandom::randomMax(62)];
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}
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return str;
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}
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