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      1 /*-
      2  * Copyright (c) 2003-2007 Tim Kientzle
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer
     10  *    in this position and unchanged.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #include "lafe_platform.h"
     28 #ifdef HAVE_STDARG_H
     29 #include <stdarg.h>
     30 #endif
     31 #include <stdio.h>
     32 #ifdef HAVE_STDLIB_H
     33 #include <stdlib.h>
     34 #endif
     35 #ifdef HAVE_STRING_H
     36 #include <string.h>
     37 #endif
     38 
     39 #include "lafe_err.h"
     40 
     41 static void lafe_vwarnc(int, const char *, va_list) __LA_PRINTFLIKE(2, 0);
     42 
     43 static const char *lafe_progname;
     44 
     45 const char *
     46 lafe_getprogname(void)
     47 {
     48 
     49 	return lafe_progname;
     50 }
     51 
     52 void
     53 lafe_setprogname(const char *name, const char *defaultname)
     54 {
     55 
     56 	if (name == NULL)
     57 		name = defaultname;
     58 #if defined(_WIN32) && !defined(__CYGWIN__)
     59 	lafe_progname = strrchr(name, '\\');
     60 	if (strrchr(name, '/') > lafe_progname)
     61 #endif
     62 	lafe_progname = strrchr(name, '/');
     63 	if (lafe_progname != NULL)
     64 		lafe_progname++;
     65 	else
     66 		lafe_progname = name;
     67 }
     68 
     69 static void
     70 lafe_vwarnc(int code, const char *fmt, va_list ap)
     71 {
     72 	fprintf(stderr, "%s: ", lafe_progname);
     73 	vfprintf(stderr, fmt, ap);
     74 	if (code != 0)
     75 		fprintf(stderr, ": %s", strerror(code));
     76 	fprintf(stderr, "\n");
     77 }
     78 
     79 void
     80 lafe_warnc(int code, const char *fmt, ...)
     81 {
     82 	va_list ap;
     83 
     84 	va_start(ap, fmt);
     85 	lafe_vwarnc(code, fmt, ap);
     86 	va_end(ap);
     87 }
     88 
     89 void
     90 lafe_errc(int eval, int code, const char *fmt, ...)
     91 {
     92 	va_list ap;
     93 
     94 	va_start(ap, fmt);
     95 	lafe_vwarnc(code, fmt, ap);
     96 	va_end(ap);
     97 	exit(eval);
     98 }
     99