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Annotation of src/usr.bin/make/buf.h, Revision 1.3

1.3     ! millert     1: /*     $OpenBSD: buf.h,v 1.2 1996/06/26 05:36:26 deraadt Exp $ */
        !             2: /*     $NetBSD: buf.h,v 1.6 1996/11/06 17:59:00 christos Exp $ */
1.1       deraadt     3:
                      4: /*
                      5:  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
                      6:  * Copyright (c) 1988, 1989 by Adam de Boor
                      7:  * Copyright (c) 1989 by Berkeley Softworks
                      8:  * All rights reserved.
                      9:  *
                     10:  * This code is derived from software contributed to Berkeley by
                     11:  * Adam de Boor.
                     12:  *
                     13:  * Redistribution and use in source and binary forms, with or without
                     14:  * modification, are permitted provided that the following conditions
                     15:  * are met:
                     16:  * 1. Redistributions of source code must retain the above copyright
                     17:  *    notice, this list of conditions and the following disclaimer.
                     18:  * 2. Redistributions in binary form must reproduce the above copyright
                     19:  *    notice, this list of conditions and the following disclaimer in the
                     20:  *    documentation and/or other materials provided with the distribution.
                     21:  * 3. All advertising materials mentioning features or use of this software
                     22:  *    must display the following acknowledgement:
                     23:  *     This product includes software developed by the University of
                     24:  *     California, Berkeley and its contributors.
                     25:  * 4. Neither the name of the University nor the names of its contributors
                     26:  *    may be used to endorse or promote products derived from this software
                     27:  *    without specific prior written permission.
                     28:  *
                     29:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     30:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     31:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     32:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     33:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     34:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     35:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     36:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     37:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     38:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     39:  * SUCH DAMAGE.
                     40:  *
1.3     ! millert    41:  *     from: @(#)buf.h 8.1 (Berkeley) 6/6/93
1.1       deraadt    42:  */
                     43:
                     44: /*-
                     45:  * buf.h --
                     46:  *     Header for users of the buf library.
                     47:  */
                     48:
                     49: #ifndef _BUF_H
                     50: #define _BUF_H
                     51:
                     52: #include    "sprite.h"
                     53:
                     54: typedef char Byte;
                     55:
                     56: typedef struct Buffer {
                     57:     int            size;       /* Current size of the buffer */
                     58:     int     left;      /* Space left (== size - (inPtr - buffer)) */
                     59:     Byte    *buffer;   /* The buffer itself */
                     60:     Byte    *inPtr;    /* Place to write to */
                     61:     Byte    *outPtr;   /* Place to read from */
                     62: } *Buffer;
                     63:
                     64: /* Buf_AddByte adds a single byte to a buffer. */
                     65: #define        Buf_AddByte(bp, byte) \
                     66:        (void) (--(bp)->left <= 0 ? Buf_OvAddByte(bp, byte), 1 : \
                     67:                (*(bp)->inPtr++ = (byte), *(bp)->inPtr = 0), 1)
                     68:
                     69: #define BUF_ERROR 256
                     70:
                     71: void Buf_OvAddByte __P((Buffer, int));
1.3     ! millert    72: void Buf_AddBytes __P((Buffer, int, const Byte *));
1.1       deraadt    73: void Buf_UngetByte __P((Buffer, int));
                     74: void Buf_UngetBytes __P((Buffer, int, Byte *));
                     75: int Buf_GetByte __P((Buffer));
                     76: int Buf_GetBytes __P((Buffer, int, Byte *));
                     77: Byte *Buf_GetAll __P((Buffer, int *));
                     78: void Buf_Discard __P((Buffer, int));
                     79: int Buf_Size __P((Buffer));
                     80: Buffer Buf_Init __P((int));
                     81: void Buf_Destroy __P((Buffer, Boolean));
1.3     ! millert    82: void Buf_ReplaceLastByte __P((Buffer, Byte));
1.1       deraadt    83:
                     84: #endif /* _BUF_H */