Tor  0.4.6.0-alpha-dev
getdelim.c
1 /* $NetBSD: getdelim.c,v 1.2 2015/12/25 20:12:46 joerg Exp $ */
2 /* NetBSD-src: getline.c,v 1.2 2014/09/16 17:23:50 christos Exp */
3 
4 /*-
5  * Copyright (c) 2011 The NetBSD Foundation, Inc.
6  * All rights reserved.
7  *
8  * This code is derived from software contributed to The NetBSD Foundation
9  * by Christos Zoulas.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  * notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in the
18  * documentation and/or other materials provided with the distribution.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30  * POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 #ifndef BUFSIZ
34 #define BUFSIZ 512
35 #endif
36 
37 ssize_t
38 compat_getdelim_(char **buf, size_t *bufsiz, int delimiter, FILE *fp)
39 {
40  char *ptr, *eptr;
41 
42 
43  if (*buf == NULL || *bufsiz == 0) {
44  *bufsiz = BUFSIZ;
45  if ((*buf = raw_malloc(*bufsiz)) == NULL)
46  return -1;
47  }
48 
49  for (ptr = *buf, eptr = *buf + *bufsiz;;) {
50  int c = fgetc(fp);
51  if (c == -1) {
52  if (feof(fp)) {
53  ssize_t diff = (ssize_t)(ptr - *buf);
54  if (diff != 0) {
55  *ptr = '\0';
56  return diff;
57  }
58  }
59  return -1;
60  }
61  *ptr++ = c;
62  if (c == delimiter) {
63  *ptr = '\0';
64  return ptr - *buf;
65  }
66  if (ptr + 2 >= eptr) {
67  char *nbuf;
68  size_t nbufsiz = *bufsiz * 2;
69  ssize_t d = ptr - *buf;
70  if (nbufsiz < *bufsiz ||
71  (nbuf = raw_realloc(*buf, nbufsiz)) == NULL)
72  return -1;
73  *buf = nbuf;
74  *bufsiz = nbufsiz;
75  eptr = nbuf + nbufsiz;
76  ptr = nbuf + d;
77  }
78  }
79 }
compat_getdelim_
ssize_t compat_getdelim_(char **lineptr, size_t *n, int delim, FILE *stream)
Definition: getdelim.c:38