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Diffstat (limited to 'src/corelib/text/qbytearraylist.cpp')
| -rw-r--r-- | src/corelib/text/qbytearraylist.cpp | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/corelib/text/qbytearraylist.cpp b/src/corelib/text/qbytearraylist.cpp new file mode 100644 index 0000000000..d04555ed4d --- /dev/null +++ b/src/corelib/text/qbytearraylist.cpp @@ -0,0 +1,175 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Copyright (C) 2014 by Southwest Research Institute (R) +** 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 <qbytearraylist.h> + +QT_BEGIN_NAMESPACE + +/*! \typedef QByteArrayListIterator + \relates QByteArrayList + + The QByteArrayListIterator type definition provides a Java-style const + iterator for QByteArrayList. + + QByteArrayList provides both \l{Java-style iterators} and + \l{STL-style iterators}. The Java-style const iterator is simply + a type definition for QListIterator<QByteArray>. + + \sa QMutableByteArrayListIterator, QByteArrayList::const_iterator +*/ + +/*! \typedef QMutableByteArrayListIterator + \relates QByteArrayList + + The QByteArrayListIterator type definition provides a Java-style + non-const iterator for QByteArrayList. + + QByteArrayList provides both \l{Java-style iterators} and + \l{STL-style iterators}. The Java-style non-const iterator is + simply a type definition for QMutableListIterator<QByteArray>. + + \sa QByteArrayListIterator, QByteArrayList::iterator +*/ + +/*! + \class QByteArrayList + \inmodule QtCore + \since 5.4 + \brief The QByteArrayList class provides a list of byte arrays. + + \ingroup tools + \ingroup shared + \ingroup string-processing + + \reentrant + + QByteArrayList is actually just a QList<QByteArray>. It is documented as a + full class just for simplicity of documenting the member methods that exist + only in QList<QByteArray>. + + All of QList's functionality also applies to QByteArrayList. For example, you + can use isEmpty() to test whether the list is empty, and you can call + functions like append(), prepend(), insert(), replace(), removeAll(), + removeAt(), removeFirst(), removeLast(), and removeOne() to modify a + QByteArrayList. In addition, QByteArrayList provides several join() + methods for concatenating the list into a single QByteArray. + + The purpose of QByteArrayList is quite different from that of QStringList. + Whereas QStringList has many methods for manipulation of elements within + the list, QByteArrayList does not. + Normally, QStringList should be used whenever working with a list of printable + strings. QByteArrayList should be used to handle and efficiently join large blobs + of binary data, as when sequentially receiving serialized data through a + QIODevice. + + \sa QByteArray, QStringList +*/ + +/*! + \fn QByteArray QByteArrayList::join() const + + Joins all the byte arrays into a single byte array. +*/ + +/*! + \fn QByteArray QByteArrayList::join(const QByteArray &separator) const + + Joins all the byte arrays into a single byte array with each + element separated by the given \a separator. +*/ + +/*! + \fn QByteArray QByteArrayList::join(char separator) const + + Joins all the byte arrays into a single byte array with each + element separated by the given \a separator. +*/ + +static int QByteArrayList_joinedSize(const QByteArrayList *that, int seplen) +{ + int totalLength = 0; + const int size = that->size(); + + for (int 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, int seplen) +{ + QByteArray res; + if (const int joinedSize = QByteArrayList_joinedSize(that, seplen)) + res.reserve(joinedSize); // don't call reserve(0) - it allocates one byte for the NUL + const int size = that->size(); + for (int i = 0; i < size; ++i) { + if (i) + res.append(sep, seplen); + res += that->at(i); + } + return res; +} + +/*! + \fn int QByteArrayList::indexOf(const char *needle, int from) const + + Returns the index position of the first occurrence of \a needle in + the list, searching forward from index position \a from. Returns + -1 if no item matched. + + \a needle must be NUL-terminated. + + This overload doesn't require creating a QByteArray, thus saving a + memory allocation and some CPU time. + + \since 5.13 + \overload +*/ + +int QtPrivate::QByteArrayList_indexOf(const QByteArrayList *that, const char *needle, int from) +{ + const auto it = std::find_if(that->begin() + from, that->end(), [needle](const QByteArray &item) { return item == needle; }); + return it == that->end() ? -1 : int(std::distance(that->begin(), it)); +} + +QT_END_NAMESPACE |