1  /* A more useful interface to strtol.
       2  
       3     Copyright (C) 1995-1996, 1998-1999, 2001-2004, 2006-2023 Free Software
       4     Foundation, Inc.
       5  
       6     This program is free software: you can redistribute it and/or modify
       7     it under the terms of the GNU General Public License as published by
       8     the Free Software Foundation, either version 3 of the License, or
       9     (at your option) any later version.
      10  
      11     This program is distributed in the hope that it will be useful,
      12     but WITHOUT ANY WARRANTY; without even the implied warranty of
      13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14     GNU General Public License for more details.
      15  
      16     You should have received a copy of the GNU General Public License
      17     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <config.h>
      20  #include "xstrtol-error.h"
      21  
      22  #include <stdlib.h>
      23  
      24  #include "error.h"
      25  #include "exitfail.h"
      26  #include "gettext.h"
      27  
      28  #define N_(msgid) msgid
      29  
      30  /* Report an error for an invalid integer in an option argument.
      31  
      32     ERR is the error code returned by one of the xstrto* functions.
      33  
      34     Use OPT_IDX to decide whether to print the short option string "C"
      35     or "-C" or a long option string derived from LONG_OPTION.  OPT_IDX
      36     is -2 if the short option "C" was used, without any leading "-"; it
      37     is -1 if the short option "-C" was used; otherwise it is an index
      38     into LONG_OPTIONS, which should have a name preceded by two '-'
      39     characters.
      40  
      41     ARG is the option-argument containing the integer.
      42  
      43     After reporting an error, exit with status EXIT_STATUS if it is
      44     nonzero.  */
      45  
      46  static void
      47  xstrtol_error (enum strtol_error err,
      48                 int opt_idx, char c, struct option const *long_options,
      49                 char const *arg,
      50                 int exit_status)
      51  {
      52    char const *hyphens = "--";
      53    char const *msgid;
      54    char const *option;
      55    char option_buffer[2];
      56  
      57    switch (err)
      58      {
      59      default:
      60        abort ();
      61  
      62      case LONGINT_INVALID:
      63        msgid = N_("invalid %s%s argument '%s'");
      64        break;
      65  
      66      case LONGINT_INVALID_SUFFIX_CHAR:
      67      case LONGINT_INVALID_SUFFIX_CHAR_WITH_OVERFLOW:
      68        msgid = N_("invalid suffix in %s%s argument '%s'");
      69        break;
      70  
      71      case LONGINT_OVERFLOW:
      72        msgid = N_("%s%s argument '%s' too large");
      73        break;
      74      }
      75  
      76    if (opt_idx < 0)
      77      {
      78        hyphens -= opt_idx;
      79        option_buffer[0] = c;
      80        option_buffer[1] = '\0';
      81        option = option_buffer;
      82      }
      83    else
      84      option = long_options[opt_idx].name;
      85  
      86    error (exit_status, 0, gettext (msgid), hyphens, option, arg);
      87  }
      88  
      89  /* Like xstrtol_error, except exit with a failure status.  */
      90  
      91  void
      92  xstrtol_fatal (enum strtol_error err,
      93                 int opt_idx, char c, struct option const *long_options,
      94                 char const *arg)
      95  {
      96    xstrtol_error (err, opt_idx, c, long_options, arg, exit_failure);
      97    abort ();
      98  }