1 /* A more useful interface to strtol.
2
3 Copyright (C) 1995-1996, 1998-1999, 2001-2004, 2006-2021 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
xstrtol_error(enum strtol_error err,int opt_idx,char c,struct option const * long_options,char const * arg,int exit_status)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
xstrtol_fatal(enum strtol_error err,int opt_idx,char c,struct option const * long_options,char const * arg)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 }
99