blob: 5fbae38bcf834b06580a51e2d66e74772b1bc047 (
plain)
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
|
/****************************************************************************
**
** Definition of TQIODevice class
**
** Created : 940913
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the tools module of the TQt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing retquirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
** included in the packaging of this file. Licensees holding valid TQt
** Commercial licenses may use this file in accordance with the TQt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#ifndef TQIODEVICE_H
#define TQIODEVICE_H
#ifndef QT_H
#include "qglobal.h"
#include "qcstring.h"
#endif // QT_H
// IO device access types
#define IO_Direct 0x0100 // direct access device
#define IO_Sequential 0x0200 // sequential access device
#define IO_Combined 0x0300 // combined direct/sequential
#define IO_TypeMask 0x0f00
// IO handling modes
#define IO_Raw 0x0040 // raw access (not buffered)
#define IO_Async 0x0080 // asynchronous mode
// IO device open modes
#define IO_ReadOnly 0x0001 // readable device
#define IO_WriteOnly 0x0002 // writable device
#define IO_ReadWrite 0x0003 // read+write device
#define IO_Append 0x0004 // append
#define IO_Truncate 0x0008 // truncate device
#define IO_Translate 0x0010 // translate CR+LF
#define IO_ModeMask 0x00ff
// IO device state
#define IO_Open 0x1000 // device is open
#define IO_StateMask 0xf000
// IO device status
#define IO_Ok 0
#define IO_ReadError 1 // read error
#define IO_WriteError 2 // write error
#define IO_FatalError 3 // fatal unrecoverable error
#define IO_ResourceError 4 // resource limitation
#define IO_OpenError 5 // cannot open device
#define IO_ConnectError 5 // cannot connect to device
#define IO_AbortError 6 // abort error
#define IO_TimeOutError 7 // time out
#define IO_UnspecifiedError 8 // unspecified error
class Q_EXPORT TQIODevice
{
public:
#if defined(QT_ABI_QT4)
typedef Q_LLONG Offset;
#else
typedef Q_ULONG Offset;
#endif
TQIODevice();
virtual ~TQIODevice();
int flags() const { return ioMode; }
int mode() const { return ioMode & IO_ModeMask; }
int state() const { return ioMode & IO_StateMask; }
bool isDirectAccess() const { return ((ioMode & IO_Direct) == IO_Direct); }
bool isSequentialAccess() const { return ((ioMode & IO_Sequential) == IO_Sequential); }
bool isCombinedAccess() const { return ((ioMode & IO_Combined) == IO_Combined); }
bool isBuffered() const { return ((ioMode & IO_Raw) != IO_Raw); }
bool isRaw() const { return ((ioMode & IO_Raw) == IO_Raw); }
bool isSynchronous() const { return ((ioMode & IO_Async) != IO_Async); }
bool isAsynchronous() const { return ((ioMode & IO_Async) == IO_Async); }
bool isTranslated() const { return ((ioMode & IO_Translate) == IO_Translate); }
bool isReadable() const { return ((ioMode & IO_ReadOnly) == IO_ReadOnly); }
bool isWritable() const { return ((ioMode & IO_WriteOnly) == IO_WriteOnly); }
bool isReadWrite() const { return ((ioMode & IO_ReadWrite) == IO_ReadWrite); }
bool isInactive() const { return state() == 0; }
bool isOpen() const { return state() == IO_Open; }
int status() const { return ioSt; }
void resetStatus() { ioSt = IO_Ok; }
virtual bool open( int mode ) = 0;
virtual void close() = 0;
virtual void flush() = 0;
virtual Offset size() const = 0;
virtual Offset at() const;
virtual bool at( Offset );
virtual bool atEnd() const;
bool reset() { return at(0); }
virtual Q_LONG readBlock( char *data, Q_ULONG maxlen ) = 0;
virtual Q_LONG writeBlock( const char *data, Q_ULONG len ) = 0;
virtual Q_LONG readLine( char *data, Q_ULONG maxlen );
Q_LONG writeBlock( const TQByteArray& data );
virtual TQByteArray readAll();
virtual int getch() = 0;
virtual int putch( int ) = 0;
virtual int ungetch( int ) = 0;
protected:
void setFlags( int f ) { ioMode = f; }
void setType( int );
void setMode( int );
void setState( int );
void setStatus( int );
Offset ioIndex;
private:
int ioMode;
int ioSt;
private: // Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
TQIODevice( const TQIODevice & );
TQIODevice &operator=( const TQIODevice & );
#endif
};
#endif // TQIODEVICE_H
|
