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