1 /* $NetBSD: buf.h,v 1.36 2020/11/10 00:32:12 rillig Exp $ */
4 * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
6 * This code is derived from software contributed to Berkeley by
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * from: @(#)buf.h 8.1 (Berkeley) 6/6/93
37 * Copyright (c) 1988, 1989 by Adam de Boor
38 * Copyright (c) 1989 by Berkeley Softworks
39 * All rights reserved.
41 * This code is derived from software contributed to Berkeley by
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
47 * 1. Redistributions of source code must retain the above copyright
48 * notice, this list of conditions and the following disclaimer.
49 * 2. Redistributions in binary form must reproduce the above copyright
50 * notice, this list of conditions and the following disclaimer in the
51 * documentation and/or other materials provided with the distribution.
52 * 3. All advertising materials mentioning features or use of this software
53 * must display the following acknowledgement:
54 * This product includes software developed by the University of
55 * California, Berkeley and its contributors.
56 * 4. Neither the name of the University nor the names of its contributors
57 * may be used to endorse or promote products derived from this software
58 * without specific prior written permission.
60 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
61 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
62 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
63 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
64 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
65 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
66 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
72 * from: @(#)buf.h 8.1 (Berkeley) 6/6/93
75 /* Automatically growing null-terminated buffers of characters. */
82 /* An automatically growing null-terminated buffer of characters. */
83 typedef struct Buffer {
84 size_t cap; /* Allocated size of the buffer, including the null */
85 size_t len; /* Number of bytes in buffer, excluding the null */
86 char *data; /* The buffer itself (always null-terminated) */
89 /* If we aren't on NetBSD, __predict_false() might not be defined. */
90 #ifndef __predict_false
91 #define __predict_false(x) (x)
94 void Buf_Expand_1(Buffer *);
96 /* Buf_AddByte adds a single byte to a buffer. */
98 Buf_AddByte(Buffer *buf, char byte)
100 size_t old_len = buf->len++;
102 if (__predict_false(old_len + 1 >= buf->cap))
104 end = buf->data + old_len;
110 Buf_Len(const Buffer *buf)
116 Buf_EndsWith(const Buffer *buf, char ch)
118 return buf->len > 0 && buf->data[buf->len - 1] == ch;
121 void Buf_AddBytes(Buffer *, const char *, size_t);
122 void Buf_AddBytesBetween(Buffer *, const char *, const char *);
123 void Buf_AddStr(Buffer *, const char *);
124 void Buf_AddInt(Buffer *, int);
125 char *Buf_GetAll(Buffer *, size_t *);
126 void Buf_Empty(Buffer *);
127 void Buf_Init(Buffer *);
128 void Buf_InitSize(Buffer *, size_t);
129 char *Buf_Destroy(Buffer *, Boolean);
130 char *Buf_DestroyCompact(Buffer *);
132 #endif /* MAKE_BUF_H */