add portability fixes for toolchain/tools (full tools/toolchain build works on osx...
[openwrt/svn-archive/archive.git] / openwrt / tools / include / getline.h
1 /*-
2 * Copyright (c) 2006 SPARTA, Inc.
3 * All rights reserved.
4 *
5 * This software was developed by SPARTA ISSO under SPAWAR contract
6 * N66001-04-C-6019 ("SEFOS").
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #ifndef __linux__
31 #include <sys/types.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35
36 /*
37 * Emulate glibc getline() via BSD fgetln().
38 * Note that outsize is not changed unless memory is allocated.
39 */
40 static inline ssize_t
41 getline(char **outbuf, size_t *outsize, FILE *fp)
42 {
43 char *buf;
44 size_t len;
45
46 buf = fgetln(fp, &len);
47 if (buf == NULL)
48 return (-1);
49
50 /* Assumes realloc() accepts NULL for ptr (C99) */
51 if (*outbuf == NULL || *outsize < len + 1) {
52 void *tmp = realloc(*outbuf, len + 1);
53 if (tmp == NULL)
54 return (-1);
55 *outbuf = tmp;
56 *outsize = len + 1;
57 }
58 memcpy(*outbuf, buf, len);
59 (*outbuf)[len] = '\0';
60 return (len);
61 }
62 #endif