Annotation of src/usr.bin/make/buf.h, Revision 1.12
1.12 ! espie 1: /* $OpenBSD: buf.h,v 1.11 1999/12/16 17:02:45 espie Exp $ */
1.4 millert 2: /* $NetBSD: buf.h,v 1.7 1996/12/31 17:53:22 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:
1.11 espie 54: typedef struct Buffer_ {
1.10 espie 55: char *buffer; /* The buffer itself. */
56: char *inPtr; /* Place to write to. */
57: char *endPtr; /* End of allocated space. */
1.11 espie 58: } BUFFER;
59:
60: typedef BUFFER *Buffer;
1.1 deraadt 61:
1.8 espie 62: /* Internal support for Buf_AddChar. */
1.12 ! espie 63: extern void BufOverflow __P((Buffer));
1.8 espie 64:
1.10 espie 65: /* User interface */
66:
67: /* Buf_AddChar -- Add a single char to buffer. */
1.8 espie 68: #define Buf_AddChar(bp, byte) \
69: do { \
1.10 espie 70: if ((bp)->endPtr - (bp)->inPtr <= 1) \
1.8 espie 71: BufOverflow(bp); \
72: *(bp)->inPtr++ = (byte); \
73: } while (0)
1.1 deraadt 74:
75: #define BUF_ERROR 256
76:
1.7 espie 77: /* Buf_AddChars -- Add a number of chars to the buffer. */
1.12 ! espie 78: extern void Buf_AddChars __P((Buffer, size_t, const char *));
1.10 espie 79: /* Buf_Reset -- Remove all chars from a buffer. */
80: #define Buf_Reset(bp) ((void)((bp)->inPtr = (bp)->buffer))
1.7 espie 81: /* Buf_AddSpace -- Add a space to buffer. */
82: #define Buf_AddSpace(b) Buf_AddChar((b), ' ')
83: /* Buf_AddString -- Add the contents of a NULL terminated string to buffer. */
84: #define Buf_AddString(b, s) Buf_AddChars((b), strlen(s), (s))
85: /* Buf_AddInterval -- Add characters between pointers s and e to buffer. */
86: #define Buf_AddInterval(b, s, e) Buf_AddChars((b), (e) - (s), (s))
87:
1.9 espie 88: /* Buf_Retrieve -- Retrieve data from a buffer, as a NULL terminated string. */
1.10 espie 89: #define Buf_Retrieve(bp) (*(bp)->inPtr = '\0', (bp)->buffer)
1.9 espie 90:
91: /* Buf_Size -- Return the number of chars in the given buffer.
92: * Doesn't include the null-terminating char. */
1.10 espie 93: #define Buf_Size(bp) ((size_t)((bp)->inPtr - (bp)->buffer))
1.7 espie 94:
1.10 espie 95: /* Buf_Init -- Initialize a buffer. If no initial size is given,
96: * a reasonable default is used. */
1.12 ! espie 97: extern void Buf_Init __P((Buffer, size_t));
1.11 espie 98: /* Buf_Destroy -- Nuke a buffer and all its resources. */
1.12 ! espie 99: extern void Buf_Destroy __P((Buffer));
1.10 espie 100: /* Buf_ReplaceLastChar -- Replace the last char in a buffer. */
1.12 ! espie 101: extern void Buf_ReplaceLastChar __P((Buffer, char));
1.1 deraadt 102:
103: #endif /* _BUF_H */
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