wsutil/cmdarg_err.c

   1 /* cmdarg_err.c
   2  * Routines to report command-line argument errors.
   3  *
   4  * Wireshark - Network traffic analyzer
   5  * By Gerald Combs <gerald@wireshark.org>
   6  * Copyright 1998 Gerald Combs
   7  *
   8  * SPDX-License-Identifier: GPL-2.0-or-later
   9  */
  10
  11 #include "config.h"
  12
  13 #include "cmdarg_err.h"
  14
  15 static void (*print_err)(const char *, va_list ap);
  16 static void (*print_err_cont)(const char *, va_list ap);
  17
  18 /*
  19  * Set the reporting functions for error messages.
  20  */
  21 void
  22 cmdarg_err_init(void (*err)(const char *, va_list),
  23                 void (*err_cont)(const char *, va_list))
  24 {
  25     print_err = err;
  26     print_err_cont = err_cont;
  27 }
  28
  29 /*
  30  * Report an error in command-line arguments.
  31  */
  32 void
  33 vcmdarg_err(const char *fmt, va_list ap)
  34 {
  35     print_err(fmt, ap);
  36 }
  37
  38 void
  39 cmdarg_err(const char *fmt, ...)
  40 {
  41     va_list ap;
  42
  43     va_start(ap, fmt);
  44     print_err(fmt, ap);
  45     va_end(ap);
  46 }
  47
  48 /*
  49  * Report additional information for an error in command-line arguments.
  50  */
  51 void
  52 cmdarg_err_cont(const char *fmt, ...)
  53 {
  54     va_list ap;
  55
  56     va_start(ap, fmt);
  57     print_err_cont(fmt, ap);
  58     va_end(ap);
  59 }
  60
  61 /*
  62  * Error printing routines that report to the standard error.
  63  */
  64 void
  65 stderr_cmdarg_err(const char *msg_format, va_list ap)
  66 {
  67     fprintf(stderr, "%s: ", g_get_prgname());
  68     vfprintf(stderr, msg_format, ap);
  69     fprintf(stderr, "\n");
  70 }
  71
  72 void
  73 stderr_cmdarg_err_cont(const char *msg_format, va_list ap)
  74 {
  75     vfprintf(stderr, msg_format, ap);
  76     fprintf(stderr, "\n");
  77 }