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- /* Error table.
- Copyright (C) 2019-2022 Free Software Foundation, Inc.
- This file is part of libctf.
- libctf is free software; you can redistribute it and/or modify it under
- the terms of the GNU General Public License as published by the Free
- Software Foundation; either version 3, or (at your option) any later
- version.
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- See the GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; see the file COPYING. If not see
- <http://www.gnu.org/licenses/>. */
- #include <ctf-impl.h>
- #include <stddef.h>
- #include <string.h>
- /* This construct is due to Bruno Haible: much thanks. */
- /* Give each structure member a unique name. The name does not matter, so we
- use the enum constant to uniquify them. */
- #define ERRSTRFIELD(N) ctf_errstr##N
- /* In this file, we want to treat the first item of the ctf error
- macro like subsequent items. */
- #define _CTF_FIRST(NAME, VALUE) _CTF_ITEM(NAME, VALUE)
- /* The error message strings, each in a unique structure member precisely big
- enough for that error, plus a str member to access them all as a string
- table. */
- static const union _ctf_errlist_t
- {
- __extension__ struct
- {
- #define _CTF_ITEM(n, s) char ERRSTRFIELD (n) [sizeof (s)];
- _CTF_ERRORS
- #undef _CTF_ITEM
- };
- char str[1];
- } _ctf_errlist =
- {
- {
- #define _CTF_ITEM(n, s) N_(s),
- _CTF_ERRORS
- #undef _CTF_ITEM
- }
- };
- /* Offsets to each member in the string table, computed using offsetof. */
- static const unsigned int _ctf_erridx[] =
- {
- #define _CTF_ITEM(n, s) [n - ECTF_BASE] = offsetof (union _ctf_errlist_t, ERRSTRFIELD (n)),
- _CTF_ERRORS
- #undef _CTF_ITEM
- };
- const char *
- ctf_errmsg (int error)
- {
- const char *str;
- if (error >= ECTF_BASE && (error - ECTF_BASE) < ECTF_NERR)
- str = _ctf_errlist.str + _ctf_erridx[error - ECTF_BASE];
- else
- str = (const char *) strerror (error);
- return (str ? gettext (str) : _("Unknown error"));
- }
- int
- ctf_errno (ctf_dict_t * fp)
- {
- return fp->ctf_errno;
- }
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