1 /*
2  * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #include <errno.h>
18 #include <stdio.h>
19 #include <stdlib.h>
20 #include <string.h>
21 
22 #include "got_error.h"
23 
24 #ifndef nitems
25 #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
26 #endif
27 
28 const struct got_error *
29 got_error(int code)
30 {
31 	int i;
32 
33 	for (i = 0; i < nitems(got_errors); i++) {
34 		if (code == got_errors[i].code)
35 			return &got_errors[i];
36 	}
37 
38 	abort();
39 }
40 
41 const struct got_error *
42 got_error_from_errno()
43 {
44 	static struct got_error err;
45 
46 	err.code = GOT_ERR_ERRNO;
47 	err.msg = strerror(errno);
48 	return &err;
49 }
50 
51 const struct got_error *
52 got_ferror(FILE *f, int code)
53 {
54 	if (ferror(f))
55 		return got_error_from_errno();
56 	return got_error(code);
57 }