1 /* $NetBSD: fgetln.c,v 1.9 2008/04/29 06:53:03 martin 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 return ptr == *buf ? -1 : ptr - *buf;
65 if (ptr + 2 >= eptr) {
67 size_t nbufsiz = *bufsiz * 2;
68 ssize_t d = ptr - *buf;
69 if ((nbuf = realloc(*buf, nbufsiz)) == NULL)
73 eptr = nbuf + nbufsiz;
80 getline(char **buf, size_t *bufsiz, FILE *fp)
82 return getdelim(buf, bufsiz, '\n', fp);
89 main(int argc, char *argv[])
95 while ((len = getline(&p, &n, stdin)) != -1)
96 (void)printf("%zd %s", len, p);