1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
|
/****************************************************************************
**
** Copyright (C) 2018 Intel Corporation.
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QCBORSTREAM_H
#define QCBORSTREAM_H
#include <QtCore/qbytearray.h>
#include <QtCore/qcborcommon.h>
#include <QtCore/qfloat16.h>
#include <QtCore/qscopedpointer.h>
#include <QtCore/qstring.h>
#include <QtCore/qstringview.h>
// See qcborcommon.h for why we check
#if defined(QT_X11_DEFINES_FOUND)
# undef True
# undef False
#endif
QT_BEGIN_NAMESPACE
class QIODevice;
enum class QCborNegativeInteger : quint64 {};
class QCborStreamWriterPrivate;
class Q_CORE_EXPORT QCborStreamWriter
{
public:
explicit QCborStreamWriter(QIODevice *device);
explicit QCborStreamWriter(QByteArray *data);
~QCborStreamWriter();
Q_DISABLE_COPY(QCborStreamWriter)
void setDevice(QIODevice *device);
QIODevice *device() const;
void append(quint64 u);
void append(qint64 i);
void append(QCborNegativeInteger n);
void append(const QByteArray &ba) { appendByteString(ba.constData(), ba.size()); }
void append(QLatin1String str);
void append(QStringView str);
void append(QCborTag tag);
void append(QCborKnownTags tag) { append(QCborTag(tag)); }
void append(QCborSimpleType st);
void append(std::nullptr_t) { append(QCborSimpleType::Null); }
void append(qfloat16 f);
void append(float f);
void append(double d);
void appendByteString(const char *data, qsizetype len);
void appendTextString(const char *utf8, qsizetype len);
// convenience
void append(bool b) { append(b ? QCborSimpleType::True : QCborSimpleType::False); }
void appendNull() { append(QCborSimpleType::Null); }
void appendUndefined() { append(QCborSimpleType::Undefined); }
#ifndef Q_QDOC
// overloads to make normal code not complain
void append(int i) { append(qint64(i)); }
void append(uint u) { append(quint64(u)); }
#endif
#ifndef QT_NO_CAST_FROM_ASCII
void append(const char *str, qsizetype size = -1)
{ appendTextString(str, (str && size == -1) ? int(strlen(str)) : size); }
#endif
void startArray();
void startArray(quint64 count);
bool endArray();
void startMap();
void startMap(quint64 count);
bool endMap();
// no API for encoding chunked strings
private:
QScopedPointer<QCborStreamWriterPrivate> d;
};
class QCborStreamReaderPrivate;
class Q_CORE_EXPORT QCborStreamReader
{
Q_GADGET
public:
enum Type : quint8 {
UnsignedInteger = 0x00,
NegativeInteger = 0x20,
ByteString = 0x40,
ByteArray = ByteString,
TextString = 0x60,
String = TextString,
Array = 0x80,
Map = 0xa0,
Tag = 0xc0,
SimpleType = 0xe0,
HalfFloat = 0xf9,
Float16 = HalfFloat,
Float = 0xfa,
Double = 0xfb,
Invalid = 0xff
};
Q_ENUM(Type)
enum StringResultCode {
EndOfString = 0,
Ok = 1,
Error = -1
};
template <typename Container> struct StringResult {
Container data;
StringResultCode status = Error;
};
Q_ENUM(StringResultCode)
QCborStreamReader();
QCborStreamReader(const char *data, qsizetype len);
QCborStreamReader(const quint8 *data, qsizetype len);
explicit QCborStreamReader(const QByteArray &data);
explicit QCborStreamReader(QIODevice *device);
~QCborStreamReader();
Q_DISABLE_COPY(QCborStreamReader)
void setDevice(QIODevice *device);
QIODevice *device() const;
void addData(const QByteArray &data);
void addData(const char *data, qsizetype len);
void addData(const quint8 *data, qsizetype len)
{ addData(reinterpret_cast<const char *>(data), len); }
void reparse();
void clear();
void reset();
QCborError lastError();
qint64 currentOffset() const;
bool isValid() const { return !isInvalid(); }
int containerDepth() const;
QCborStreamReader::Type parentContainerType() const;
bool hasNext() const noexcept Q_DECL_PURE_FUNCTION;
bool next(int maxRecursion = 10000);
Type type() const { return QCborStreamReader::Type(type_); }
bool isUnsignedInteger() const { return type() == UnsignedInteger; }
bool isNegativeInteger() const { return type() == NegativeInteger; }
bool isInteger() const { return quint8(type()) <= quint8(NegativeInteger); }
bool isByteArray() const { return type() == ByteArray; }
bool isString() const { return type() == String; }
bool isArray() const { return type() == Array; }
bool isMap() const { return type() == Map; }
bool isTag() const { return type() == Tag; }
bool isSimpleType() const { return type() == SimpleType; }
bool isFloat16() const { return type() == Float16; }
bool isFloat() const { return type() == Float; }
bool isDouble() const { return type() == Double; }
bool isInvalid() const { return type() == Invalid; }
bool isSimpleType(QCborSimpleType st) const { return isSimpleType() && toSimpleType() == st; }
bool isFalse() const { return isSimpleType(QCborSimpleType::False); }
bool isTrue() const { return isSimpleType(QCborSimpleType::True); }
bool isBool() const { return isFalse() || isTrue(); }
bool isNull() const { return isSimpleType(QCborSimpleType::Null); }
bool isUndefined() const { return isSimpleType(QCborSimpleType::Undefined); }
bool isLengthKnown() const noexcept Q_DECL_PURE_FUNCTION;
quint64 length() const;
bool isContainer() const { return isMap() || isArray(); }
bool enterContainer() { Q_ASSERT(isContainer()); return _enterContainer_helper(); }
bool leaveContainer();
StringResult<QString> readString() { Q_ASSERT(isString()); return _readString_helper(); }
StringResult<QByteArray> readByteArray(){ Q_ASSERT(isByteArray()); return _readByteArray_helper(); }
qsizetype currentStringChunkSize() const{ Q_ASSERT(isString() || isByteArray()); return _currentStringChunkSize(); }
StringResult<qsizetype> readStringChunk(char *ptr, qsizetype maxlen);
bool toBool() const { Q_ASSERT(isBool()); return value64 - int(QCborSimpleType::False); }
QCborTag toTag() const { Q_ASSERT(isTag()); return QCborTag(value64); }
quint64 toUnsignedInteger() const { Q_ASSERT(isUnsignedInteger()); return value64; }
QCborNegativeInteger toNegativeInteger() const { Q_ASSERT(isNegativeInteger()); return QCborNegativeInteger(value64 + 1); }
QCborSimpleType toSimpleType() const{ Q_ASSERT(isSimpleType()); return QCborSimpleType(value64); }
qfloat16 toFloat16() const { Q_ASSERT(isFloat16()); return _toFloatingPoint<qfloat16>(); }
float toFloat() const { Q_ASSERT(isFloat()); return _toFloatingPoint<float>(); }
double toDouble() const { Q_ASSERT(isDouble()); return _toFloatingPoint<double>(); }
qint64 toInteger() const
{
Q_ASSERT(isInteger());
qint64 v = qint64(value64);
if (isNegativeInteger())
return -v - 1;
return v;
}
private:
void preparse();
bool _enterContainer_helper();
StringResult<QString> _readString_helper();
StringResult<QByteArray> _readByteArray_helper();
qsizetype _currentStringChunkSize() const;
template <typename FP> FP _toFloatingPoint() const noexcept
{
using UInt = typename QIntegerForSizeof<FP>::Unsigned;
UInt u = UInt(value64);
FP f;
memcpy(static_cast<void *>(&f), &u, sizeof(f));
return f;
}
friend QCborStreamReaderPrivate;
friend class QCborContainerPrivate;
quint64 value64;
QScopedPointer<QCborStreamReaderPrivate> d;
quint8 type_;
quint8 reserved[3] = {};
};
QT_END_NAMESPACE
#if defined(QT_X11_DEFINES_FOUND)
# define True 1
# define False 0
#endif
#endif // QCBORSTREAM_H
|
