qbytearraylist.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// Copyright (C) 2014 by Southwest Research Institute (R)
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include <qbytearraylist.h>
 
QT_BEGIN_NAMESPACE
 
static qsizetype QByteArrayList_joinedSize(const QByteArrayList *that, qsizetype seplen)
{
    qsizetype totalLength = 0;
    const qsizetype size = that->size();
 
    for (qsizetype i = 0; i < size; ++i)
        totalLength += that->at(i).size();
 
    if (size > 0)
        totalLength += seplen * (size - 1);
 
    return totalLength;
}
 
QByteArray QtPrivate::QByteArrayList_join(const QByteArrayList *that, const char *sep, qsizetype seplen)
{
    QByteArray res;
    if (const qsizetype joinedSize = QByteArrayList_joinedSize(that, seplen))
        res.reserve(joinedSize); // don't call reserve(0) - it allocates one byte for the NUL
    const qsizetype size = that->size();
    for (qsizetype i = 0; i < size; ++i) {
        if (i)
            res.append(sep, seplen);
        res += that->at(i);
    }
    return res;
}
 
QT_END_NAMESPACE