Remove __P macros from src/usr.bin and src/usr.sbin.
[dragonfly.git] / usr.bin / make / buf.h
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1/*
2 * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
3 * Copyright (c) 1988, 1989 by Adam de Boor
4 * Copyright (c) 1989 by Berkeley Softworks
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Adam de Boor.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * from: @(#)buf.h 8.1 (Berkeley) 6/6/93
39 * $FreeBSD: src/usr.bin/make/buf.h,v 1.9 1999/08/28 01:03:26 peter Exp $
2d8a3be7 40 * $DragonFly: src/usr.bin/make/buf.h,v 1.3 2003/11/03 19:31:30 eirikn Exp $
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41 */
42
43/*-
44 * buf.h --
45 * Header for users of the buf library.
46 */
47
48#ifndef _BUF_H
49#define _BUF_H
50
51#include "sprite.h"
52
53typedef char Byte;
54
55typedef 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 */
61} *Buffer;
62
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)
67
68#define BUF_ERROR 256
69
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70void Buf_OvAddByte(Buffer, int);
71void Buf_AddBytes(Buffer, int, const Byte *);
72void Buf_UngetByte(Buffer, int);
73void Buf_UngetBytes(Buffer, int, Byte *);
74int Buf_GetByte(Buffer);
75int Buf_GetBytes(Buffer, int, Byte *);
76Byte *Buf_GetAll(Buffer, int *);
77void Buf_Discard(Buffer, int);
78int Buf_Size(Buffer);
79Buffer Buf_Init(int);
80void Buf_Destroy(Buffer, Boolean);
81void Buf_ReplaceLastByte(Buffer, int);
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82
83#endif /* _BUF_H */