1*0a6a1f1dSLionel Sambuc /* $NetBSD: fgetln.c,v 1.1 2015/01/22 03:48:07 christos Exp $ */
2*0a6a1f1dSLionel Sambuc
3*0a6a1f1dSLionel Sambuc /*-
4*0a6a1f1dSLionel Sambuc * Copyright (c) 1998 The NetBSD Foundation, Inc.
5*0a6a1f1dSLionel Sambuc * All rights reserved.
6*0a6a1f1dSLionel Sambuc *
7*0a6a1f1dSLionel Sambuc * This code is derived from software contributed to The NetBSD Foundation
8*0a6a1f1dSLionel Sambuc * by Christos Zoulas.
9*0a6a1f1dSLionel Sambuc *
10*0a6a1f1dSLionel Sambuc * Redistribution and use in source and binary forms, with or without
11*0a6a1f1dSLionel Sambuc * modification, are permitted provided that the following conditions
12*0a6a1f1dSLionel Sambuc * are met:
13*0a6a1f1dSLionel Sambuc * 1. Redistributions of source code must retain the above copyright
14*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer.
15*0a6a1f1dSLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
16*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer in the
17*0a6a1f1dSLionel Sambuc * documentation and/or other materials provided with the distribution.
18*0a6a1f1dSLionel Sambuc *
19*0a6a1f1dSLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20*0a6a1f1dSLionel Sambuc * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21*0a6a1f1dSLionel Sambuc * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22*0a6a1f1dSLionel Sambuc * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23*0a6a1f1dSLionel Sambuc * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24*0a6a1f1dSLionel Sambuc * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25*0a6a1f1dSLionel Sambuc * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26*0a6a1f1dSLionel Sambuc * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27*0a6a1f1dSLionel Sambuc * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28*0a6a1f1dSLionel Sambuc * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29*0a6a1f1dSLionel Sambuc * POSSIBILITY OF SUCH DAMAGE.
30*0a6a1f1dSLionel Sambuc */
31*0a6a1f1dSLionel Sambuc
32*0a6a1f1dSLionel Sambuc #ifdef HAVE_CONFIG_H
33*0a6a1f1dSLionel Sambuc #include "config.h"
34*0a6a1f1dSLionel Sambuc #endif
35*0a6a1f1dSLionel Sambuc
36*0a6a1f1dSLionel Sambuc #if !HAVE_FGETLN
37*0a6a1f1dSLionel Sambuc #include <stdlib.h>
38*0a6a1f1dSLionel Sambuc #ifndef HAVE_NBTOOL_CONFIG_H
39*0a6a1f1dSLionel Sambuc /* These headers are required, but included from nbtool_config.h */
40*0a6a1f1dSLionel Sambuc #include <stdio.h>
41*0a6a1f1dSLionel Sambuc #include <unistd.h>
42*0a6a1f1dSLionel Sambuc #include <errno.h>
43*0a6a1f1dSLionel Sambuc #include <string.h>
44*0a6a1f1dSLionel Sambuc #endif
45*0a6a1f1dSLionel Sambuc
46*0a6a1f1dSLionel Sambuc char *
fgetln(FILE * fp,size_t * len)47*0a6a1f1dSLionel Sambuc fgetln(FILE *fp, size_t *len)
48*0a6a1f1dSLionel Sambuc {
49*0a6a1f1dSLionel Sambuc static char *buf = NULL;
50*0a6a1f1dSLionel Sambuc static size_t bufsiz = 0;
51*0a6a1f1dSLionel Sambuc char *ptr;
52*0a6a1f1dSLionel Sambuc
53*0a6a1f1dSLionel Sambuc
54*0a6a1f1dSLionel Sambuc if (buf == NULL) {
55*0a6a1f1dSLionel Sambuc bufsiz = BUFSIZ;
56*0a6a1f1dSLionel Sambuc if ((buf = malloc(bufsiz)) == NULL)
57*0a6a1f1dSLionel Sambuc return NULL;
58*0a6a1f1dSLionel Sambuc }
59*0a6a1f1dSLionel Sambuc
60*0a6a1f1dSLionel Sambuc if (fgets(buf, bufsiz, fp) == NULL)
61*0a6a1f1dSLionel Sambuc return NULL;
62*0a6a1f1dSLionel Sambuc
63*0a6a1f1dSLionel Sambuc *len = 0;
64*0a6a1f1dSLionel Sambuc while ((ptr = strchr(&buf[*len], '\n')) == NULL) {
65*0a6a1f1dSLionel Sambuc size_t nbufsiz = bufsiz + BUFSIZ;
66*0a6a1f1dSLionel Sambuc char *nbuf = realloc(buf, nbufsiz);
67*0a6a1f1dSLionel Sambuc
68*0a6a1f1dSLionel Sambuc if (nbuf == NULL) {
69*0a6a1f1dSLionel Sambuc int oerrno = errno;
70*0a6a1f1dSLionel Sambuc free(buf);
71*0a6a1f1dSLionel Sambuc errno = oerrno;
72*0a6a1f1dSLionel Sambuc buf = NULL;
73*0a6a1f1dSLionel Sambuc return NULL;
74*0a6a1f1dSLionel Sambuc } else
75*0a6a1f1dSLionel Sambuc buf = nbuf;
76*0a6a1f1dSLionel Sambuc
77*0a6a1f1dSLionel Sambuc if (fgets(&buf[bufsiz], BUFSIZ, fp) == NULL) {
78*0a6a1f1dSLionel Sambuc buf[bufsiz] = '\0';
79*0a6a1f1dSLionel Sambuc *len = strlen(buf);
80*0a6a1f1dSLionel Sambuc return buf;
81*0a6a1f1dSLionel Sambuc }
82*0a6a1f1dSLionel Sambuc
83*0a6a1f1dSLionel Sambuc *len = bufsiz;
84*0a6a1f1dSLionel Sambuc bufsiz = nbufsiz;
85*0a6a1f1dSLionel Sambuc }
86*0a6a1f1dSLionel Sambuc
87*0a6a1f1dSLionel Sambuc *len = (ptr - buf) + 1;
88*0a6a1f1dSLionel Sambuc return buf;
89*0a6a1f1dSLionel Sambuc }
90*0a6a1f1dSLionel Sambuc
91*0a6a1f1dSLionel Sambuc #endif
92*0a6a1f1dSLionel Sambuc
93*0a6a1f1dSLionel Sambuc #ifdef TEST
94*0a6a1f1dSLionel Sambuc int
main(int argc,char * argv[])95*0a6a1f1dSLionel Sambuc main(int argc, char *argv[])
96*0a6a1f1dSLionel Sambuc {
97*0a6a1f1dSLionel Sambuc char *p;
98*0a6a1f1dSLionel Sambuc size_t len;
99*0a6a1f1dSLionel Sambuc
100*0a6a1f1dSLionel Sambuc while ((p = fgetln(stdin, &len)) != NULL) {
101*0a6a1f1dSLionel Sambuc (void)printf("%zu %s", len, p);
102*0a6a1f1dSLionel Sambuc free(p);
103*0a6a1f1dSLionel Sambuc }
104*0a6a1f1dSLionel Sambuc return 0;
105*0a6a1f1dSLionel Sambuc }
106*0a6a1f1dSLionel Sambuc #endif
107