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Diffstat (limited to 'qtools/qiodevice.h')
| -rw-r--r-- | qtools/qiodevice.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/qtools/qiodevice.h b/qtools/qiodevice.h new file mode 100644 index 0000000..1c54217 --- /dev/null +++ b/qtools/qiodevice.h @@ -0,0 +1,155 @@ +/**************************************************************************** +** +** +** Definition of QIODevice class +** +** Created : 940913 +** +** Copyright (C) 1992-2000 Trolltech AS. All rights reserved. +** +** This file is part of the tools module of the Qt GUI Toolkit. +** +** This file may be distributed under the terms of the Q Public License +** as defined by Trolltech AS of Norway and appearing in the file +** LICENSE.QPL included in the packaging of this file. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition +** licenses may use this file in accordance with the Qt Commercial License +** Agreement provided with the Software. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for +** information about Qt Commercial License Agreements. +** See http://www.trolltech.com/qpl/ for QPL licensing information. +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ + +#ifndef QIODEVICE_H +#define QIODEVICE_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 QIODevice // IO device class +{ +public: + QIODevice(); + virtual ~QIODevice(); + + 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 uint size() const = 0; + virtual int at() const; + virtual bool at( int ); + virtual bool atEnd() const; + bool reset() { return at(0); } + + virtual int readBlock( char *data, uint maxlen ) = 0; + virtual int writeBlock( const char *data, uint len ) = 0; + virtual int readLine( char *data, uint maxlen ); + int writeBlock( const QByteArray& data ); + QByteArray 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 ); + int ioIndex; + +private: + int ioMode; + int ioSt; + +private: // Disabled copy constructor and operator= +#if defined(Q_DISABLE_COPY) + QIODevice( const QIODevice & ); + QIODevice &operator=( const QIODevice & ); +#endif +}; + + +#endif // QIODEVICE_H |