e1000: add i82583V 1000baseT Ethernet
[minix3.git] / tools / compat / getline.c
blob1861533dfe3935c8ec8f20c662adb394da47a948
1 /* $NetBSD: getline.c,v 1.2 2014/09/16 17:23:50 christos Exp $ */
3 /*-
4 * Copyright (c) 2011 The NetBSD Foundation, Inc.
5 * All rights reserved.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
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.
32 #ifdef HAVE_NBTOOL_CONFIG_H
33 #include "nbtool_config.h"
34 #endif
36 #if !HAVE_GETLINE
37 #include <stdlib.h>
39 #ifndef HAVE_NBTOOL_CONFIG_H
40 /* These headers are required, but included from nbtool_config.h */
41 #include <stdio.h>
42 #include <unistd.h>
43 #include <errno.h>
44 #include <string.h>
45 #endif
47 ssize_t
48 getdelim(char **buf, size_t *bufsiz, int delimiter, FILE *fp)
50 char *ptr, *eptr;
53 if (*buf == NULL || *bufsiz == 0) {
54 *bufsiz = BUFSIZ;
55 if ((*buf = malloc(*bufsiz)) == NULL)
56 return -1;
59 for (ptr = *buf, eptr = *buf + *bufsiz;;) {
60 int c = fgetc(fp);
61 if (c == -1) {
62 if (feof(fp)) {
63 ssize_t diff = (ssize_t)(ptr - *buf);
64 if (diff != 0) {
65 *ptr = '\0';
66 return diff;
69 return -1;
71 *ptr++ = c;
72 if (c == delimiter) {
73 *ptr = '\0';
74 return ptr - *buf;
76 if (ptr + 2 >= eptr) {
77 char *nbuf;
78 size_t nbufsiz = *bufsiz * 2;
79 ssize_t d = ptr - *buf;
80 if ((nbuf = realloc(*buf, nbufsiz)) == NULL)
81 return -1;
82 *buf = nbuf;
83 *bufsiz = nbufsiz;
84 eptr = nbuf + nbufsiz;
85 ptr = nbuf + d;
90 ssize_t
91 getline(char **buf, size_t *bufsiz, FILE *fp)
93 return getdelim(buf, bufsiz, '\n', fp);
96 #endif
98 #ifdef TEST
99 int
100 main(int argc, char *argv[])
102 char *p = NULL;
103 ssize_t len;
104 size_t n = 0;
106 while ((len = getline(&p, &n, stdin)) != -1)
107 (void)printf("%zd %s", len, p);
108 free(p);
109 return 0;
111 #endif