1 /* $NetBSD: getline.c,v 1.2 2014/09/16 17:23:50 christos Exp $ */
4 * Copyright (c) 2011 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
41 getdelim(char **buf
, size_t *bufsiz
, int delimiter
, FILE *fp
)
46 if (*buf
== NULL
|| *bufsiz
== 0) {
48 if ((*buf
= malloc(*bufsiz
)) == NULL
)
52 for (ptr
= *buf
, eptr
= *buf
+ *bufsiz
;;) {
56 ssize_t diff
= (ssize_t
)(ptr
- *buf
);
69 if (ptr
+ 2 >= eptr
) {
71 size_t nbufsiz
= *bufsiz
* 2;
72 ssize_t d
= ptr
- *buf
;
73 if ((nbuf
= realloc(*buf
, nbufsiz
)) == NULL
)
77 eptr
= nbuf
+ nbufsiz
;
84 getline(char **buf
, size_t *bufsiz
, FILE *fp
)
86 return getdelim(buf
, bufsiz
, '\n', fp
);
93 main(int argc
, char *argv
[])
99 while ((len
= getline(&p
, &n
, stdin
)) != -1)
100 (void)printf("%" SIZE_T_FORMAT
"d %s", len
, p
);