@@ -0,0 +1,81 @@
1+/* $NetBSD: fgetln.c,v 1.9 2008/04/29 06:53:03 martin Exp $ */
2+
3+/*-
4+ * Copyright (c) 2011 The NetBSD Foundation, Inc.
5+ * All rights reserved.
6+ *
7+ * This code is derived from software contributed to The NetBSD Foundation
8+ * by Christos Zoulas.
9+ *
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.
18+ *
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.
30+ */
31+
32+#include <stdlib.h>
33+#include <stdio.h>
34+#include <unistd.h>
35+#include <errno.h>
36+#include <string.h>
37+
38+ssize_t
39+getdelim(char **buf, size_t *bufsiz, int delimiter, FILE *fp)
40+{
41+ char *ptr, *eptr;
42+
43+
44+ if (*buf == NULL || *bufsiz == 0) {
45+ *bufsiz = BUFSIZ;
46+ if ((*buf = malloc(*bufsiz)) == NULL)
47+ return -1;
48+ }
49+
50+ for (ptr = *buf, eptr = *buf + *bufsiz;;) {
51+ int c = fgetc(fp);
52+ if (c == -1) {
53+ if (feof(fp))
54+ return ptr == *buf ? -1 : ptr - *buf;
55+ else
56+ return -1;
57+ }
58+ *ptr++ = c;
59+ if (c == delimiter) {
60+ *ptr = '\0';
61+ return ptr - *buf;
62+ }
63+ if (ptr + 2 >= eptr) {
64+ char *nbuf;
65+ size_t nbufsiz = *bufsiz * 2;
66+ ssize_t d = ptr - *buf;
67+ if ((nbuf = realloc(*buf, nbufsiz)) == NULL)
68+ return -1;
69+ *buf = nbuf;
70+ *bufsiz = nbufsiz;
71+ eptr = nbuf + nbufsiz;
72+ ptr = nbuf + d;
73+ }
74+ }
75+}
76+
77+ssize_t
78+getline(char **buf, size_t *bufsiz, FILE *fp)
79+{
80+ return getdelim(buf, bufsiz, '\n', fp);
81+}