src/column/err.c

   1 /*-
   2  * Copyright (c) 1993
   3  *      The Regents of the University of California.  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  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 /* 2001-12-04   Charles Wilson: modified license to the 'BSD no advert'
  31  *              license, as required by the Director of the Office of
  32  *       Technology Licensing of the University of California on
  33  *       July 22, 1999.
  34  *       See http://www.opensource.org/licenses/bsd-license.html
  35  */
  36 #if HAVE_CONFIG_H
  37 #  include "config.h"
  38 #endif
  39 #include "common.h"
  40 #include "errs.h"
  41
  42
  43 #ifdef HAVE_PROGNAME
  44 extern char *__progname;                /* Program name, from crt0. */
  45 #else
  46 char *__progname = "foo";               /* probably libc4 */
  47 #endif
  48
  49 /* Some compilers complain "null format string" upon err(1,NULL) */
  50 /* Make them happy with a separate routine. */
  51 void
  52 err_nomsg(int exitval) {
  53         (void)fprintf(stderr, "%s: %s\n", __progname, strerror(errno));
  54         exit(exitval);
  55 }
  56
  57 void
  58 err(int exitval, const char *fmt, ...) {
  59         va_list ap;
  60         va_start(ap, fmt);
  61         verr(exitval, fmt, ap);
  62         va_end(ap);
  63 }
  64
  65 void
  66 verr(int exitval, const char *fmt, va_list ap) {
  67         int sverrno;
  68
  69         sverrno = errno;
  70         (void)fprintf(stderr, "%s: ", __progname);
  71         if (fmt != NULL && *fmt != 0) {
  72                 (void)vfprintf(stderr, fmt, ap);
  73                 (void)fprintf(stderr, ": ");
  74         }
  75         (void)fprintf(stderr, "%s\n", strerror(sverrno));
  76         exit(exitval);
  77 }
  78
  79 void
  80 errx(int exitval, const char *fmt, ...) {
  81         va_list ap;
  82         va_start(ap, fmt);
  83         verrx(exitval, fmt, ap);
  84         va_end(ap);
  85 }
  86
  87 void
  88 verrx(int exitval, const char *fmt, va_list ap) {
  89         (void)fprintf(stderr, "%s: ", __progname);
  90         if (fmt != NULL)
  91                 (void)vfprintf(stderr, fmt, ap);
  92         (void)fprintf(stderr, "\n");
  93         exit(exitval);
  94 }
  95
  96 void
  97 warn(const char *fmt, ...) {
  98         va_list ap;
  99         va_start(ap, fmt);
 100         vwarn(fmt, ap);
 101         va_end(ap);
 102 }
 103
 104 void
 105 vwarn(const char *fmt, va_list ap) {
 106         int sverrno;
 107
 108         sverrno = errno;
 109         (void)fprintf(stderr, "%s: ", __progname);
 110         if (fmt != NULL) {
 111                 (void)vfprintf(stderr, fmt, ap);
 112                 (void)fprintf(stderr, ": ");
 113         }
 114         (void)fprintf(stderr, "%s\n", strerror(sverrno));
 115 }
 116
 117 void
 118 warnx(const char *fmt, ...) {
 119         va_list ap;
 120         va_start(ap, fmt);
 121         vwarnx(fmt, ap);
 122         va_end(ap);
 123 }
 124
 125 void
 126 vwarnx(const char *fmt, va_list ap) {
 127         (void)fprintf(stderr, "%s: ", __progname);
 128         if (fmt != NULL)
 129                 (void)vfprintf(stderr, fmt, ap);
 130         (void)fprintf(stderr, "\n");
 131 }