1 /* $NetBSD: buf.h,v 1.1.1.1 2002/09/19 10:40:05 agc Exp $ */
4 * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
5 * Copyright (c) 1988, 1989 by Adam de Boor
6 * Copyright (c) 1989 by Berkeley Softworks
9 * This code is derived from software contributed to Berkeley by
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13 * modification, are permitted provided that the following conditions
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21 * must display the following acknowledgement:
22 * This product includes software developed by the University of
23 * California, Berkeley and its contributors.
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40 * from: @(#)buf.h 8.1 (Berkeley) 6/6/93
45 * Header for users of the buf library.
55 typedef struct Buffer {
56 int size; /* Current size of the buffer */
57 int left; /* Space left (== size - (inPtr - buffer)) */
58 Byte *buffer; /* The buffer itself */
59 Byte *inPtr; /* Place to write to */
60 Byte *outPtr; /* Place to read from */
63 /* Buf_AddByte adds a single byte to a buffer. */
64 #define Buf_AddByte(bp, byte) \
65 (void) (--(bp)->left <= 0 ? Buf_OvAddByte(bp, byte), 1 : \
66 (*(bp)->inPtr++ = (byte), *(bp)->inPtr = 0), 1)
70 void Buf_OvAddByte __P((Buffer, int));
71 void Buf_AddBytes __P((Buffer, int, const Byte *));
72 Byte *Buf_GetAll __P((Buffer, int *));
73 void Buf_Discard __P((Buffer, int));
74 int Buf_Size __P((Buffer));
75 Buffer Buf_Init __P((int));
76 void Buf_Destroy __P((Buffer, Boolean));
77 void Buf_ReplaceLastByte __P((Buffer, int));