This is the verbatim text of the qiodev.h include file. It is is provided only for illustration; the copyright remains with Troll Tech.
/**************************************************************************** ** $Id: qiodev.h,v 1.4 1995/02/16 21:00:04 hanord Exp $ ** ** Definition of QIODevice class ** ** Author : Haavard Nord ** Created : 940913 ** ** Copyright (C) 1994,1995 by Troll Tech AS. All rights reserved. ** *****************************************************************************/ #ifndef QIODEV_H #define QIODEV_H #include "qglobal.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 0x0010 // raw access (not buffered) #define IO_Async 0x0020 // asynchronous mode // IO device open modes #define IO_ReadOnly 0x0001 // readable device #define IO_WriteOnly 0x0002 // writeable device #define IO_ReadWrite 0x0003 // read+write device #define IO_Append 0x0004 // append #define IO_Translate 0x0008 // translate CR+LF #define IO_Truncate 0x0010 // truncate device #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 class 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; } #undef TB #define TB(x) ((ioMode & (x)) == x) bool isDirectAccess() const { return TB(IO_Direct); } bool isSequentialAccess() const { return TB(IO_Sequential); } bool isCombinedAccess() const { return TB(IO_Combined); } bool isBuffered() const { return !TB(IO_Raw); } bool isRaw() const { return TB(IO_Raw); } bool isSynchronous() const { return !TB(IO_Async); } bool isAsynchronous() const { return TB(IO_Async); } bool isTranslated() const { return TB(IO_Translate); } bool isReadable() const { return TB(IO_ReadOnly); } bool isWritable() const { return TB(IO_WriteOnly); } bool isReadWrite() const { return TB(IO_ReadWrite); } #undef TB 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; // open device virtual void close() = 0; // close device virtual void flush() = 0; // flush device virtual long size() const = 0; // get size of data virtual long at() const; // get data index virtual bool at( long ); // set data index virtual bool atEnd() const; // test if at end of data bool reset() { return at(0); } // reset data index virtual int readBlock( char *data, uint len ) = 0; virtual int writeBlock( const char *data, uint len ) = 0; virtual int readLine( char *data, uint maxlen ); virtual int getch() = 0; // get next char virtual int putch( int ) = 0; // put char virtual int ungetch( int ) = 0; // put back char protected: void setFlags( int f ) { ioMode = f; } void setType( int ); // set device type void setMode( int ); // set device mode void setState( int ); // set device state void setStatus( int ); // set device status long index; // data index private: int ioMode; // IO mode int ioSt; // IO status }; #endif // QIODEV_H