lib/roken/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 RCSID("$Id$");
  37 #endif
  38
  39 #include "roken.h"
  40 #include "err.h"
  41
  42 #ifndef HAVE___PROGNAME
  43 const char *__progname;
  44 #endif
  45
  46 #ifndef HAVE_GETPROGNAME
  47 const char *
  48 getprogname(void)
  49 {
  50     return __progname;
  51 }
  52 #endif
  53
  54 #ifndef HAVE_SETPROGNAME
  55 void
  56 setprogname(const char *argv0)
  57 {
  58 #ifndef HAVE___PROGNAME
  59     char *p;
  60     if(argv0 == NULL)
  61         return;
  62     p = strrchr(argv0, '/');
  63     if(p == NULL)
  64         p = argv0;
  65     else
  66         p++;
  67     __progname = p;
  68 #endif
  69 }
  70 #endif /* HAVE_SETPROGNAME */
  71
  72 void
  73 set_progname(char *argv0)
  74 {
  75     setprogname ((const char *)argv0);
  76 }
  77
  78 const char *
  79 get_progname (void)
  80 {
  81     return getprogname ();
  82 }
  83
  84 void
  85 warnerr(int doerrno, const char *fmt, va_list ap)
  86 {
  87     int sverrno = errno;
  88     const char *progname = getprogname();
  89
  90     if(progname != NULL){
  91         fprintf(stderr, "%s", progname);
  92         if(fmt != NULL || doerrno)
  93             fprintf(stderr, ": ");
  94     }
  95     if (fmt != NULL){
  96         vfprintf(stderr, fmt, ap);
  97         if(doerrno)
  98             fprintf(stderr, ": ");
  99     }
 100     if(doerrno)
 101         fprintf(stderr, "%s", strerror(sverrno));
 102     fprintf(stderr, "\n");
 103 }