1*cb63e24eSchristos /* sframe-error.c - Error messages.
2*cb63e24eSchristos
3*cb63e24eSchristos Copyright (C) 2022-2024 Free Software Foundation, Inc.
4*cb63e24eSchristos
5*cb63e24eSchristos This file is part of libsframe.
6*cb63e24eSchristos
7*cb63e24eSchristos This program is free software; you can redistribute it and/or modify
8*cb63e24eSchristos it under the terms of the GNU General Public License as published by
9*cb63e24eSchristos the Free Software Foundation; either version 3 of the License, or
10*cb63e24eSchristos (at your option) any later version.
11*cb63e24eSchristos
12*cb63e24eSchristos This program is distributed in the hope that it will be useful,
13*cb63e24eSchristos but WITHOUT ANY WARRANTY; without even the implied warranty of
14*cb63e24eSchristos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15*cb63e24eSchristos GNU General Public License for more details.
16*cb63e24eSchristos
17*cb63e24eSchristos You should have received a copy of the GNU General Public License
18*cb63e24eSchristos along with this program. If not, see <http://www.gnu.org/licenses/>. */
19*cb63e24eSchristos
20*cb63e24eSchristos #include "sframe-api.h"
21*cb63e24eSchristos #include <stddef.h>
22*cb63e24eSchristos #include <string.h>
23*cb63e24eSchristos
24*cb63e24eSchristos /* In this file, we want to treat the first item of the SFrame error
25*cb63e24eSchristos macro like subsequent items. */
26*cb63e24eSchristos #define _SFRAME_FIRST(NAME, VALUE) _SFRAME_ITEM(NAME, VALUE)
27*cb63e24eSchristos
28*cb63e24eSchristos /* The error message strings, each in a unique structure member precisely big
29*cb63e24eSchristos enough for that error, plus a str member to access them all as a string
30*cb63e24eSchristos table. */
31*cb63e24eSchristos
32*cb63e24eSchristos static const char *const _sframe_errlist[] = {
33*cb63e24eSchristos #define _SFRAME_ITEM(n, s) s,
34*cb63e24eSchristos _SFRAME_ERRORS
35*cb63e24eSchristos #undef _SFRAME_ITEM
36*cb63e24eSchristos };
37*cb63e24eSchristos
38*cb63e24eSchristos const char *
sframe_errmsg(int error)39*cb63e24eSchristos sframe_errmsg (int error)
40*cb63e24eSchristos {
41*cb63e24eSchristos const char *str;
42*cb63e24eSchristos
43*cb63e24eSchristos if (error >= SFRAME_ERR_BASE && (error - SFRAME_ERR_BASE) < SFRAME_ERR_NERR)
44*cb63e24eSchristos str = _sframe_errlist[error - SFRAME_ERR_BASE];
45*cb63e24eSchristos else
46*cb63e24eSchristos str = (const char *) strerror (error);
47*cb63e24eSchristos
48*cb63e24eSchristos return (str ? str : "Unknown error");
49*cb63e24eSchristos }
50