libexplain
1.4.D001
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00001 /* 00002 * libexplain - Explain errno values returned by libc functions 00003 * Copyright (C) 2013 Peter Miller 00004 * 00005 * This program is free software; you can redistribute it and/or modify it 00006 * under the terms of the GNU Lesser General Public License as published by 00007 * the Free Software Foundation; either version 3 of the License, or (at 00008 * your option) any later version. 00009 * 00010 * This program is distributed in the hope that it will be useful, but 00011 * WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser 00013 * General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU Lesser General Public License 00016 * along with this program. If not, see <http://www.gnu.org/licenses/>. 00017 */ 00018 00019 #include <libexplain/ac/errno.h> 00020 #include <libexplain/ac/string.h> 00021 00022 #include <libexplain/output.h> 00023 #include <libexplain/strcoll.h> 00024 00025 00026 int 00027 explain_strcoll_or_die(const char *s1, const char *s2) 00028 { 00029 int result; 00030 00031 errno = 0; 00032 result = explain_strcoll_on_error(s1, s2); 00033 if (errno != 0) 00034 { 00035 explain_output_exit_failure(); 00036 } 00037 return result; 00038 } 00039 00040 00041 int 00042 explain_strcoll_on_error(const char *s1, const char *s2) 00043 { 00044 int result; 00045 int hold_errno; 00046 00047 hold_errno = errno; 00048 errno = 0; 00049 #ifdef HAVE_STRCOLL 00050 result = strcoll(s1, s2); 00051 #else 00052 errno = ENOSYS; 00053 result = 0; /* result of string comparison, can be any int value */ 00054 #endif 00055 if (errno != 0) 00056 { 00057 hold_errno = errno; 00058 explain_output_error 00059 ( 00060 "%s", 00061 explain_errno_strcoll(hold_errno, s1, s2) 00062 ); 00063 } 00064 errno = hold_errno; 00065 return result; 00066 } 00067 00068 00069 /* vim: set ts=8 sw=4 et : */