getopt1.c
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1 /* getopt_long and getopt_long_only entry points for GNU getopt.
2  Copyright (C) 1987,88,89,90,91,92,93,94,96,97 Free Software Foundation, Inc.
3 
4 NOTE: The canonical source of this file is maintained with the GNU C Library.
5 Bugs can be reported to bug-glibc@prep.ai.mit.edu.
6 
7 This program is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 2, or (at your option) any
10 later version.
11 
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16 
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
20 USA. */
21 
22 #ifdef HAVE_CONFIG_H
23 #include <config.h>
24 #endif
25 
26 #include "getopt.h"
27 
28 #include <stdio.h>
29 
30 /* Comment out all this code if we are using the GNU C Library, and are not
31  actually compiling the library itself. This code is part of the GNU C
32  Library, but also included in many other GNU distributions. Compiling
33  and linking in this code is a waste when using the GNU C library
34  (especially if it is a shared library). Rather than having every GNU
35  program understand `configure --with-gnu-libc' and omit the object files,
36  it is simpler to just do this in the source for each such file. */
37 
38 #define GETOPT_INTERFACE_VERSION 2
39 #if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
40 #include <gnu-versions.h>
41 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
42 #define ELIDE_CODE
43 #endif
44 #endif
45 
46 #ifndef ELIDE_CODE
47 
48 
49 /* This needs to come after some library #include
50  to get __GNU_LIBRARY__ defined. */
51 #ifdef __GNU_LIBRARY__
52 #include <stdlib.h>
53 #endif
54 
55 #ifndef NULL
56 #define NULL 0
57 #endif
58 
59 int
60 getopt_long (int argc, char *const *argv, const char *options,
61  const struct option *long_options, int *opt_index)
62 {
63  return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
64 }
65 
66 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
67  If an option that starts with '-' (not '--') doesn't match a long option,
68  but does match a short option, it is parsed as a short option
69  instead. */
70 
71 int
72 getopt_long_only (int argc, char *const *argv, const char *options,
73  const struct option *long_options, int *opt_index)
74 {
75  return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
76 }
77 
78 
79 #endif /* Not ELIDE_CODE. */
80 
81 #ifdef TEST
82 
83 #include <stdio.h>
84 
85 int
86 main (int argc, char **argv)
87 {
88  int c;
89  int digit_optind = 0;
90 
91  while (1)
92  {
93  int this_option_optind = optind ? optind : 1;
94  int option_index = 0;
95  static struct option long_options[] =
96  {
97  {"add", 1, 0, 0},
98  {"append", 0, 0, 0},
99  {"delete", 1, 0, 0},
100  {"verbose", 0, 0, 0},
101  {"create", 0, 0, 0},
102  {"file", 1, 0, 0},
103  {0, 0, 0, 0}
104  };
105 
106  c = getopt_long (argc, argv, "abc:d:0123456789",
107  long_options, &option_index);
108  if (c == -1)
109  break;
110 
111  switch (c)
112  {
113  case 0:
114  printf ("option %s", long_options[option_index].name);
115  if (optarg)
116  printf (" with arg %s", optarg);
117  printf ("\n");
118  break;
119 
120  case '0':
121  case '1':
122  case '2':
123  case '3':
124  case '4':
125  case '5':
126  case '6':
127  case '7':
128  case '8':
129  case '9':
130  if (digit_optind != 0 && digit_optind != this_option_optind)
131  printf ("digits occur in two different argv-elements.\n");
132  digit_optind = this_option_optind;
133  printf ("option %c\n", c);
134  break;
135 
136  case 'a':
137  printf ("option a\n");
138  break;
139 
140  case 'b':
141  printf ("option b\n");
142  break;
143 
144  case 'c':
145  printf ("option c with value `%s'\n", optarg);
146  break;
147 
148  case 'd':
149  printf ("option d with value `%s'\n", optarg);
150  break;
151 
152  case '?':
153  break;
154 
155  default:
156  printf ("?? getopt returned character code 0%o ??\n", c);
157  }
158  }
159 
160  if (optind < argc)
161  {
162  printf ("non-option ARGV-elements: ");
163  while (optind < argc)
164  printf ("%s ", argv[optind++]);
165  printf ("\n");
166  }
167 
168  exit (0);
169 }
170 
171 #endif /* TEST */
getopt.h
main
int main(int argc, char **argv)
Definition: cancat.cpp:74
_getopt_internal
int _getopt_internal(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *longind, int long_only)
Definition: getopt.c:500
getopt_long
int getopt_long(int argc, char *const *argv, const char *options, const struct option *long_options, int *opt_index)
Definition: getopt1.c:60
option
Definition: getopt.h:81
optind
int optind
Definition: getopt.c:131
option::name
char * name
Definition: getopt.h:86
getopt_long_only
int getopt_long_only(int argc, char *const *argv, const char *options, const struct option *long_options, int *opt_index)
Definition: getopt1.c:72
optarg
char * optarg
Definition: getopt.c:116


sdhlibrary_cpp
Author(s): Dirk Osswald
autogenerated on Wed Mar 2 2022 01:00:58