| /* Error table. |
| Copyright (C) 2019-2020 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 line number in ctf-error.h to uniquify them. */ |
| |
| #define ERRSTRFIELD(line) ERRSTRFIELD1 (line) |
| #define ERRSTRFIELD1(line) ctf_errstr##line |
| |
| /* 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_STR(n, s) char ERRSTRFIELD (__LINE__) [sizeof (s)]; |
| #include "ctf-error.h" |
| #undef _CTF_STR |
| }; |
| char str[1]; |
| } _ctf_errlist = |
| { |
| { |
| #define _CTF_STR(n, s) N_(s), |
| #include "ctf-error.h" |
| #undef _CTF_STR |
| } |
| }; |
| |
| /* Offsets to each member in the string table, computed using offsetof. */ |
| |
| static const unsigned int _ctf_erridx[] = |
| { |
| #define _CTF_STR(n, s) [n - ECTF_BASE] = offsetof (union _ctf_errlist_t, ERRSTRFIELD (__LINE__)), |
| #include "ctf-error.h" |
| #undef _CTF_STR |
| }; |
| |
| 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_file_t * fp) |
| { |
| return fp->ctf_errno; |
| } |