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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
using namespace Qt::StringLiterals;
//! [0]
QCborValue(QCborTag(2), QByteArray("\x01\0\0\0\0\0\0\0\0", 9));
//! [0]
//! [1]
writer.startMap(4); // 4 elements in the map
writer.append("label"_L1);
writer.append("journald"_L1);
writer.append("autoDetect"_L1);
writer.append(false);
writer.append("condition"_L1);
writer.append("libs.journald"_L1);
writer.append("output"_L1);
writer.startArray(1);
writer.append("privateFeature"_L1);
writer.endArray();
writer.endMap();
//! [1]
//! [2]
QFile f("output", QIODevice::WriteOnly);
QCborStreamWriter writer(&f);
writer.startMap(0);
writer.endMap();
//! [2]
//! [3]
QByteArray encodedNumber(qint64 value)
{
QByteArray ba;
QCborStreamWriter writer(&ba);
writer.append(value);
return ba;
}
//! [3]
//! [4]
writer.append(0U);
writer.append(Q_UINT64_C(4294967296));
writer.append(std::numeric_limits<quint64>::max());
//! [4]
//! [5]
writer.append(0);
writer.append(-1);
writer.append(Q_INT64_C(4294967296));
writer.append(std::numeric_limits<qint64>::max());
//! [5]
//! [6]
writer.append(QCborNegativeInteger(1));
writer.append(QCborNegativeInteger(Q_INT64_C(4294967296)));
writer.append(QCborNegativeInteger(-quint64(std::numeric_limits<qint64>::min())));
//! [6]
//! [7]
void writeFile(QCborStreamWriter &writer, const QString &fileName)
{
QFile f(fileName);
if (f.open(QIODevice::ReadOnly))
writer.append(f.readAll());
}
//! [7]
//! [8]
writer.append("Hello, World"_L1);
//! [8]
//! [9]
void writeString(QCborStreamWriter &writer, const QString &str)
{
writer.append(str);
}
//! [9]
//! [10]
void writeRxPattern(QCborStreamWriter &writer, const QRegularExpression &rx)
{
writer.append(QCborTag(36));
writer.append(rx.pattern());
}
//! [10]
//! [11]
void writeCurrentTime(QCborStreamWriter &writer)
{
writer.append(QCborKnownTags::UnixTime_t);
writer.append(time(nullptr));
}
//! [11]
//! [12]
writer.append(QCborSimpleType::Null);
writer.append(QCborSimpleType(32));
//! [12]
//! [13]
void writeFloat(QCborStreamWriter &writer, float f)
{
qfloat16 f16 = f;
if (qIsNaN(f) || f16 == f)
writer.append(f16);
else
writer.append(f);
}
//! [13]
//! [14]
void writeFloat(QCborStreamWriter &writer, double d)
{
float f = d;
if (qIsNaN(d) || d == f)
writer.append(f);
else
writer.append(d);
}
//! [14]
//! [15]
void writeDouble(QCborStreamWriter &writer, double d)
{
float f;
if (qIsNaN(d)) {
writer.append(qfloat16(qQNaN()));
} else if (qIsInf(d)) {
writer.append(d < 0 ? -qInf() : qInf());
} else if ((f = d) == d) {
qfloat16 f16 = f;
if (f16 == f)
writer.append(f16);
else
writer.append(f);
} else {
writer.append(d);
}
}
//! [15]
//! [16]
writer.append(b ? QCborSimpleType::True : QCborSimpleType::False);
//! [16]
//! [17]
writer.append(QCborSimpleType::Null);
//! [17]
//! [18]
writer.append(QCborSimpleType::Null);
//! [18]
//! [19]
writer.append(QCborSimpleType::Undefined);
//! [19]
//! [20]
void appendList(QCborStreamWriter &writer, const QList<QString> &values)
{
writer.startArray();
for (const QString &s : values)
writer.append(s);
writer.endArray();
}
//! [20]
//! [21]
void appendList(QCborStreamWriter &writer, const QStringList &list)
{
writer.startArray(list.size());
for (const QString &s : list)
writer.append(s);
writer.endArray();
}
//! [21]
//! [22]
void appendMap(QCborStreamWriter &writer, const QList<QPair<int, QString>> &values)
{
writer.startMap();
for (const auto pair : values) {
writer.append(pair.first)
writer.append(pair.second);
}
writer.endMap();
}
//! [22]
//! [23]
void appendMap(QCborStreamWriter &writer, const QMap<int, QString> &map)
{
writer.startMap(map.size());
for (auto it = map.begin(); it != map.end(); ++it) {
writer.append(it.key());
writer.append(it.value());
}
writer.endMap();
}
//! [23]
//! [24]
void handleStream(QCborStreamReader &reader)
{
switch (reader.type())
case QCborStreamReader::UnsignedInteger:
case QCborStreamReader::NegativeInteger:
case QCborStreamReader::SimpleType:
case QCborStreamReader::Float16:
case QCborStreamReader::Float:
case QCborStreamReader::Double:
handleFixedWidth(reader);
reader.next();
break;
case QCborStreamReader::ByteArray:
case QCborStreamReader::String:
handleString(reader);
break;
case QCborStreamReader::Array:
case QCborStreamReader::Map:
reader.enterContainer();
while (reader.lastError() == QCborError::NoError)
handleStream(reader);
if (reader.lastError() == QCborError::NoError)
reader.leaveContainer();
}
}
//! [24]
//! [25]
QVariantList populateFromCbor(QCborStreamReader &reader)
{
QVariantList list;
if (reader.isLengthKnown())
list.reserve(reader.length());
reader.enterContainer();
while (reader.lastError() == QCborError::NoError && reader.hasNext())
list.append(readOneElement(reader));
if (reader.lastError() == QCborError::NoError)
reader.leaveContainer();
}
//! [25]
//! [26]
QVariantMap populateFromCbor(QCborStreamReader &reader)
{
QVariantMap map;
if (reader.isLengthKnown())
map.reserve(reader.length());
reader.enterContainer();
while (reader.lastError() == QCborError::NoError && reader.hasNext()) {
QString key = readElementAsString(reader);
map.insert(key, readOneElement(reader));
}
if (reader.lastError() == QCborError::NoError)
reader.leaveContainer();
}
//! [26]
//! [27]
QString decodeString(QCborStreamReader &reader)
{
QString result;
auto r = reader.readString();
while (r.code == QCborStreamReader::Ok) {
result += r.data;
r = reader.readString();
}
if (r.code == QCborStreamReader::Error) {
// handle error condition
result.clear();
}
return result;
}
//! [27]
//! [28]
QBytearray decodeBytearray(QCborStreamReader &reader)
{
QBytearray result;
auto r = reader.readBytearray();
while (r.code == QCborStreamReader::Ok) {
result += r.data;
r = reader.readByteArray();
}
if (r.code == QCborStreamReader::Error) {
// handle error condition
result.clear();
}
return result;
}
//! [28]
//! [29]
QCborStreamReader<qsizetype> result;
do {
qsizetype size = reader.currentStringChunkSize();
qsizetype oldsize = buffer.size();
buffer.resize(oldsize + size);
result = reader.readStringChunk(buffer.data() + oldsize, size);
} while (result.status() == QCborStreamReader::Ok);
//! [29]
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