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DOpus4-GPL
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asyncio.h
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2000-01-27
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/*
Directory Opus 4
Original GPL release version 4.12
Copyright 1993-2000 Jonathan Potter
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
All users of Directory Opus 4 (including versions distributed
under the GPL) are entitled to upgrade to the latest version of
Directory Opus version 5 at a reduced price. Please see
http://www.gpsoft.com.au for more information.
The release of Directory Opus 4 under the GPL in NO WAY affects
the existing commercial status of Directory Opus 5.
*/
#ifndef ASYNCIO_H
#define ASYNCIO_H
/*****************************************************************************/
#ifndef EXEC_TYPES_H
#include <exec/types.h>
#endif
#ifndef EXEC_PORTS_H
#include <exec/ports.h>
#endif
#ifndef DOS_DOS_H
#include <dos/dos.h>
#endif
/*****************************************************************************/
/* This structure is public only by necessity, don't muck with it yourself, or
* you're looking for trouble
*/
struct AsyncFile
{
BPTR af_File;
ULONG af_BlockSize;
struct MsgPort *af_Handler;
APTR af_Offset;
LONG af_BytesLeft;
ULONG af_BufferSize;
APTR af_Buffers[2];
struct StandardPacket af_Packet;
struct MsgPort af_PacketPort;
ULONG af_CurrentBuf;
ULONG af_SeekOffset;
UBYTE af_PacketPending;
UBYTE af_ReadMode;
};
/*****************************************************************************/
#define MODE_READ 0 /* read an existing file */
#define MODE_WRITE 1 /* create a new file, delete existing file if needed */
#define MODE_APPEND 2 /* append to end of existing file, or create new */
#define MODE_START -1 /* relative to start of file */
#define MODE_CURRENT 0 /* relative to current file position */
#define MODE_END 1 /* relative to end of file */
/*****************************************************************************/
#ifdef __SASC_60
__stdargs struct AsyncFile *OpenAsync(const STRPTR fileName, UBYTE accessMode, LONG bufferSize);
__stdargs LONG CloseAsync(struct AsyncFile *file);
__stdargs LONG ReadAsync(struct AsyncFile *file, APTR buffer, LONG numBytes);
__stdargs LONG ReadCharAsync(struct AsyncFile *file);
__stdargs LONG WriteAsync(struct AsyncFile *file, APTR buffer, LONG numBytes);
__stdargs LONG WriteCharAsync(struct AsyncFile *file, UBYTE ch);
__stdargs LONG SeekAsync(struct AsyncFile *file, LONG position, BYTE mode);
#else
struct AsyncFile *__stdargs OpenAsync(const STRPTR fileName, UBYTE accessMode, LONG bufferSize);
LONG __stdargs CloseAsync(struct AsyncFile *file);
LONG __stdargs ReadAsync(struct AsyncFile *file, APTR buffer, LONG numBytes);
LONG __stdargs ReadCharAsync(struct AsyncFile *file);
LONG __stdargs WriteAsync(struct AsyncFile *file, APTR buffer, LONG numBytes);
LONG __stdargs WriteCharAsync(struct AsyncFile *file, UBYTE ch);
LONG __stdargs SeekAsync(struct AsyncFile *file, LONG position, BYTE mode);
#endif
/*****************************************************************************/
#endif /* ASYNCIO_H */