/* $NetBSD: buf.h,v 1.1.1.1 2004/03/11 13:04:01 grant Exp $ */ /* * Copyright (c) 1988, 1989, 1990 The Regents of the University of California. * Copyright (c) 1988, 1989 by Adam de Boor * Copyright (c) 1989 by Berkeley Softworks * All rights reserved. * * This code is derived from software contributed to Berkeley by * Adam de Boor. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: @(#)buf.h 8.1 (Berkeley) 6/6/93 */ /*- * buf.h -- * Header for users of the buf library. */ #ifndef _BUF_H #define _BUF_H #include "sprite.h" typedef char Byte; typedef struct Buffer { int size; /* Current size of the buffer */ int left; /* Space left (== size - (inPtr - buffer)) */ Byte *buffer; /* The buffer itself */ Byte *inPtr; /* Place to write to */ Byte *outPtr; /* Place to read from */ } *Buffer; /* Buf_AddByte adds a single byte to a buffer. */ #define Buf_AddByte(bp, byte) \ (void) (--(bp)->left <= 0 ? Buf_OvAddByte(bp, byte), 1 : \ (*(bp)->inPtr++ = (byte), *(bp)->inPtr = 0), 1) #define BUF_ERROR 256 void Buf_OvAddByte __P((Buffer, int)); void Buf_AddBytes __P((Buffer, int, const Byte *)); Byte *Buf_GetAll __P((Buffer, int *)); void Buf_Discard __P((Buffer, int)); int Buf_Size __P((Buffer)); Buffer Buf_Init __P((int)); void Buf_Destroy __P((Buffer, Boolean)); void Buf_ReplaceLastByte __P((Buffer, int)); #endif /* _BUF_H */