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/*
Copyright (C) 2008 Andreas Baumann <abaumann@yahoo.com>
This program 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 of the License, 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. If not, see <http://www.gnu.org/licenses/>.
*/
#include "port/string.h"
/**
* strdup is not always part of the C library or they need insane flags to
* be set which would enable too many non-standard things.
*/
#if !defined HAVE_STRDUP
#include <stdlib.h> /* for malloc, NULL */
char *wolf_port_strdup( const char *s ) {
char *d;
d = (char *)malloc( strlen( s ) + 1 );
if( d == NULL ) return NULL;
strcpy( d, s );
return d;
}
#endif /* !defined HAVE_STRDUP */
/**
* strerror_r exists in various fassions (XSI and GNU flavour in glibc). We stick to
* the API of POSIX.1 of course (XSI-compliant)..
*/
#if !defined HAVE_STRERROR_R
#include "port/stdio.h" /* for snprintf */
#include <sys/types.h> /* for size_t */
#include <errno.h> /* for errno */
int wolf_port_strerror_r( int num, char *buf, size_t buflen ) {
const char *msg;
msg = strerror( num );
/* TODO: can we detect illegal error numbers? For sure on Linux NULL
* is never returned and a strcmp with prefix "Unknown error" or similar
* is not really acceptable.
*/
if( msg == NULL /* Solaris 8 */ ||
strncmp( msg, "Unknown error:", strlen( "Unknown error:" ) ) == 0 /* FreeBSD */ ) {
/* Linux returns an empty string in this case, why? */
(void)snprintf( buf, buflen, "Unknown error %d", num );
errno = EINVAL;
return -1;
}
strncpy( buf, msg, buflen-1 );
errno = 0;
return 0;
}
#endif /* !defined HAVE_STRERROR_R */
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