src/tests/warnerr.c

   1 /*
   2  * Copyright (c) 1995 - 2001 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include <config.h>
  36 #endif
  37
  38 #include "err.h"
  39
  40 #ifndef HAVE___PROGNAME
  41 const char *__progname;
  42 #endif
  43
  44 #ifndef HAVE_GETPROGNAME
  45 const char *
  46 getprogname(void)
  47 {
  48     return __progname;
  49 }
  50 #endif
  51
  52 #ifndef HAVE_SETPROGNAME
  53 void
  54 setprogname(const char *argv0)
  55 {
  56 #ifndef HAVE___PROGNAME
  57     char *p;
  58     if (argv0 == NULL)
  59         return;
  60     p = strrchr(argv0, '/');
  61     if (p == NULL)
  62       p = (char *)argv0;
  63     else
  64         p++;
  65     __progname = p;
  66 #endif
  67 }
  68 #endif /* HAVE_SETPROGNAME */
  69
  70 void
  71 set_progname(char *argv0)
  72 {
  73     setprogname((const char *)argv0);
  74 }
  75
  76 const char *
  77 get_progname(void)
  78 {
  79     return getprogname();
  80 }
  81
  82 void
  83 warnerr(int doerrno, const char *fmt, va_list ap)
  84 {
  85     int sverrno = errno;
  86     const char *progname = getprogname();
  87
  88     if (progname != NULL) {
  89         fprintf(stderr, "%s", progname);
  90         if (fmt != NULL || doerrno)
  91             fprintf(stderr, ": ");
  92     }
  93     if (fmt != NULL) {
  94         vfprintf(stderr, fmt, ap);
  95         if (doerrno)
  96             fprintf(stderr, ": ");
  97     }
  98     if (doerrno)
  99         fprintf(stderr, "%s", strerror(sverrno));
 100     fprintf(stderr, "\n");
 101 }