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29
30#include <QtCore/qdatastream.h>
31#include <QtCore/qvariant.h>
32
33#ifndef PARAMETERS_H
34#define PARAMETERS_H
35
36QT_BEGIN_NAMESPACE
37
38namespace Parameters
39{
40
41QVariantList read(const QByteArray &data, QDataStream &stream, quint32 &offset, int count);
42
43template<typename T>
44T readNext(QDataStream &stream, quint32 &offset)
45{
46 T value;
47 stream >> value;
48 offset += sizeof(T);
49 return value;
50}
51
52template<>
53QString readNext(QDataStream &stream, quint32 &offset)
54{
55 std::vector<char> data(readNext<quint32>(stream, offset));
56 stream.readRawData(&data[0], len: data.size());
57 offset += data.size();
58 return QString::fromUtf8(str: data.data(), size: data.size());
59}
60
61template<>
62QByteArray readNext(QDataStream &stream, quint32 &offset)
63{
64 QByteArray data;
65 stream >> data;
66 offset += quint32(int(sizeof(qint32)) + data.size());
67 return data;
68}
69
70QVariantList readNextArray(const QByteArray &data, QDataStream &stream, quint32 &offset)
71{
72 quint8 count;
73 stream >> count;
74 offset += sizeof(count);
75 return read(data, stream, offset, count);
76}
77
78QVariant readNext(const QByteArray &data, QDataStream &stream, quint32 &offset)
79{
80 char type;
81 offset += quint32(stream.readRawData(&type, len: 1));
82 switch (type) {
83 case 'i': return readNext<qint32>(stream, offset);
84 case 'u': return readNext<quint32>(stream, offset);
85 case 'd': return readNext<double>(stream, offset);
86 case 'b': return readNext<quint8>(stream, offset);
87 case 's': return readNext<QString>(stream, offset);
88 case 'x': return readNext<QByteArray>(stream, offset);
89 case 'a': return readNextArray(data, stream, offset);
90 }
91 return QVariant();
92}
93
94QVariantList read(const QByteArray &data, QDataStream &stream, quint32 &offset)
95{
96 QVariantList parameters;
97 for (const auto size = data.size(); int(offset + 4) < size;)
98 parameters.append(t: readNext(data, stream, offset));
99 return parameters;
100}
101
102QVariantList read(const QByteArray &data, QDataStream &stream, quint32 &offset, int count)
103{
104 QVariantList parameters;
105 for (int i = 0; i < count; ++i)
106 parameters.append(t: readNext(data, stream, offset));
107 return parameters;
108}
109
110}
111
112QT_END_NAMESPACE
113
114#endif // PARAMETERS_H
115

source code of qtwebglplugin/tests/plugins/platforms/webgl/parameters.h