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
|
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QIODEVICE_H
#define QIODEVICE_H
#ifndef QT_NO_QOBJECT
#include <QtCore/qobject.h>
#else
#include <QtCore/qobjectdefs.h>
#include <QtCore/qscopedpointer.h>
#endif
#include <QtCore/qstring.h>
#ifdef open
#error qiodevice.h must be included before any header file that defines open
#endif
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Core)
class QByteArray;
class QIODevicePrivate;
class Q_CORE_EXPORT QIODevice
#ifndef QT_NO_QOBJECT
: public QObject
#endif
{
#ifndef QT_NO_QOBJECT
Q_OBJECT
#endif
public:
enum OpenModeFlag {
NotOpen = 0x0000,
ReadOnly = 0x0001,
WriteOnly = 0x0002,
ReadWrite = ReadOnly | WriteOnly,
Append = 0x0004,
Truncate = 0x0008,
Text = 0x0010,
Unbuffered = 0x0020
};
Q_DECLARE_FLAGS(OpenMode, OpenModeFlag)
QIODevice();
#ifndef QT_NO_QOBJECT
explicit QIODevice(QObject *parent);
#endif
virtual ~QIODevice();
OpenMode openMode() const;
void setTextModeEnabled(bool enabled);
bool isTextModeEnabled() const;
bool isOpen() const;
bool isReadable() const;
bool isWritable() const;
virtual bool isSequential() const;
virtual bool open(OpenMode mode);
virtual void close();
// ### Qt 5: pos() and seek() should not be virtual, and
// ### seek() should call a virtual seekData() function.
virtual qint64 pos() const;
virtual qint64 size() const;
virtual bool seek(qint64 pos);
virtual bool atEnd() const;
virtual bool reset();
virtual qint64 bytesAvailable() const;
virtual qint64 bytesToWrite() const;
qint64 read(char *data, qint64 maxlen);
QByteArray read(qint64 maxlen);
QByteArray readAll();
qint64 readLine(char *data, qint64 maxlen);
QByteArray readLine(qint64 maxlen = 0);
virtual bool canReadLine() const;
qint64 write(const char *data, qint64 len);
qint64 write(const char *data);
inline qint64 write(const QByteArray &data)
{ return write(data.constData(), data.size()); }
qint64 peek(char *data, qint64 maxlen);
QByteArray peek(qint64 maxlen);
virtual bool waitForReadyRead(int msecs);
virtual bool waitForBytesWritten(int msecs);
void ungetChar(char c);
bool putChar(char c);
bool getChar(char *c);
QString errorString() const;
#ifndef QT_NO_QOBJECT
Q_SIGNALS:
void readyRead();
void bytesWritten(qint64 bytes);
void aboutToClose();
void readChannelFinished();
#endif
protected:
#ifdef QT_NO_QOBJECT
QIODevice(QIODevicePrivate &dd);
#else
QIODevice(QIODevicePrivate &dd, QObject *parent = 0);
#endif
virtual qint64 readData(char *data, qint64 maxlen) = 0;
virtual qint64 readLineData(char *data, qint64 maxlen);
virtual qint64 writeData(const char *data, qint64 len) = 0;
void setOpenMode(OpenMode openMode);
void setErrorString(const QString &errorString);
#ifdef QT_NO_QOBJECT
QScopedPointer<QIODevicePrivate> d_ptr;
#endif
private:
Q_DECLARE_PRIVATE(QIODevice)
Q_DISABLE_COPY(QIODevice)
#ifdef QT3_SUPPORT
public:
typedef qint64 Offset;
inline QT3_SUPPORT int flags() const { return static_cast<int>(openMode()); }
inline QT3_SUPPORT int mode() const { return static_cast<int>(openMode()); }
inline QT3_SUPPORT int state() const;
inline QT3_SUPPORT bool isDirectAccess() const { return !isSequential(); }
inline QT3_SUPPORT bool isSequentialAccess() const { return isSequential(); }
inline QT3_SUPPORT bool isCombinedAccess() const { return false; }
inline QT3_SUPPORT bool isBuffered() const { return true; }
inline QT3_SUPPORT bool isRaw() const { return false; }
inline QT3_SUPPORT bool isSynchronous() const { return true; }
inline QT3_SUPPORT bool isAsynchronous() const { return false; }
inline QT3_SUPPORT bool isTranslated() const { return (openMode() & Text) != 0; }
inline QT3_SUPPORT bool isInactive() const { return !isOpen(); }
typedef int Status;
QT3_SUPPORT Status status() const;
QT3_SUPPORT void resetStatus();
inline QT3_SUPPORT Offset at() const { return pos(); }
inline QT3_SUPPORT bool at(Offset offset) { return seek(offset); }
inline QT3_SUPPORT qint64 readBlock(char *data, quint64 maxlen) { return read(data, maxlen); }
inline QT3_SUPPORT qint64 writeBlock(const char *data, quint64 len) { return write(data, len); }
inline QT3_SUPPORT qint64 writeBlock(const QByteArray &data) { return write(data); }
inline QT3_SUPPORT int getch() { char c; return getChar(&c) ? int(uchar(c)) : -1; }
inline QT3_SUPPORT int putch(int c) { return putChar(char(c)) ? int(uchar(c)) : -1; }
inline QT3_SUPPORT int ungetch(int c) { ungetChar(uchar(c)); return c; }
#endif
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QIODevice::OpenMode)
#ifdef QT3_SUPPORT
static QT3_SUPPORT_VARIABLE const uint IO_Direct = 0x0100;
static QT3_SUPPORT_VARIABLE const uint IO_Sequential = 0x0200;
static QT3_SUPPORT_VARIABLE const uint IO_Combined = 0x0300;
static QT3_SUPPORT_VARIABLE const uint IO_TypeMask = 0x0300;
static QT3_SUPPORT_VARIABLE const uint IO_Raw = 0x0000;
static QT3_SUPPORT_VARIABLE const uint IO_Async = 0x0000;
#define IO_ReadOnly QIODevice::ReadOnly
#define IO_WriteOnly QIODevice::WriteOnly
#define IO_ReadWrite QIODevice::ReadWrite
#define IO_Append QIODevice::Append
#define IO_Truncate QIODevice::Truncate
#define IO_Translate QIODevice::Text
#define IO_ModeMask 0x00ff
static QT3_SUPPORT_VARIABLE const uint IO_Open = 0x1000;
static QT3_SUPPORT_VARIABLE const uint IO_StateMask = 0xf000;
static QT3_SUPPORT_VARIABLE const uint IO_Ok = 0;
static QT3_SUPPORT_VARIABLE const uint IO_ReadError = 1;
static QT3_SUPPORT_VARIABLE const uint IO_WriteError = 2;
static QT3_SUPPORT_VARIABLE const uint IO_FatalError = 3;
static QT3_SUPPORT_VARIABLE const uint IO_ResourceError = 4;
static QT3_SUPPORT_VARIABLE const uint IO_OpenError = 5;
static QT3_SUPPORT_VARIABLE const uint IO_ConnectError = 5;
static QT3_SUPPORT_VARIABLE const uint IO_AbortError = 6;
static QT3_SUPPORT_VARIABLE const uint IO_TimeOutError = 7;
static QT3_SUPPORT_VARIABLE const uint IO_UnspecifiedError = 8;
inline QT3_SUPPORT int QIODevice::state() const
{
return isOpen() ? 0x1000 : 0;
}
#endif
#if !defined(QT_NO_DEBUG_STREAM)
class QDebug;
Q_CORE_EXPORT QDebug operator<<(QDebug debug, QIODevice::OpenMode modes);
#endif
QT_END_NAMESPACE
QT_END_HEADER
#endif // QIODEVICE_H
|
