getopt1.c - enscript - GNU Enscript
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---
getopt1.c (4655B)
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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 This file is part of the GNU C Library. Its master source is NOT part of
5 the C library, however. The master source lives in /gd/gnu/lib.
6
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public License as
9 published by the Free Software Foundation; either version 2 of the
10 License, or (at your option) any later version.
11
12 The GNU C Library 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 GNU
15 Library General Public License for more details.
16
17 You should have received a copy of the GNU Library General Public
18 License along with the GNU C Library; see the file COPYING.LIB. If not,
19 write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
21
22 #ifdef HAVE_CONFIG_H
23 #include <config.h>
24 #endif
25
26 #include "getopt.h"
27
28 #if !defined (__STDC__) || !__STDC__
29 /* This is a separate conditional since some stdc systems
30 reject `defined (const)'. */
31 #ifndef const
32 #define const
33 #endif
34 #endif
35
36 #include <stdio.h>
37
38 /* Comment out all this code if we are using the GNU C Library, and are not
39 actually compiling the library itself. This code is part of the GNU C
40 Library, but also included in many other GNU distributions. Compiling
41 and linking in this code is a waste when using the GNU C library
42 (especially if it is a shared library). Rather than having every GNU
43 program understand `configure --with-gnu-libc' and omit the object files,
44 it is simpler to just do this in the source for each such file. */
45
46 #define GETOPT_INTERFACE_VERSION 2
47 #if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
48 #include <gnu-versions.h>
49 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
50 #define ELIDE_CODE
51 #endif
52 #endif
53
54 #ifndef ELIDE_CODE
55
56
57 /* This needs to come after some library #include
58 to get __GNU_LIBRARY__ defined. */
59 #ifdef __GNU_LIBRARY__
60 #include <stdlib.h>
61 #endif
62
63 #ifndef NULL
64 #define NULL 0
65 #endif
66
67 int
68 getopt_long (argc, argv, options, long_options, opt_index)
69 int argc;
70 char *const *argv;
71 const char *options;
72 const struct option *long_options;
73 int *opt_index;
74 {
75 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
76 }
77
78 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
79 If an option that starts with '-' (not '--') doesn't match a long option,
80 but does match a short option, it is parsed as a short option
81 instead. */
82
83 int
84 getopt_long_only (argc, argv, options, long_options, opt_index)
85 int argc;
86 char *const *argv;
87 const char *options;
88 const struct option *long_options;
89 int *opt_index;
90 {
91 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
92 }
93
94
95 #endif /* Not ELIDE_CODE. */
96
97 #ifdef TEST
98
99 #include <stdio.h>
100
101 int
102 main (argc, argv)
103 int argc;
104 char **argv;
105 {
106 int c;
107 int digit_optind = 0;
108
109 while (1)
110 {
111 int this_option_optind = optind ? optind : 1;
112 int option_index = 0;
113 static struct option long_options[] =
114 {
115 {"add", 1, 0, 0},
116 {"append", 0, 0, 0},
117 {"delete", 1, 0, 0},
118 {"verbose", 0, 0, 0},
119 {"create", 0, 0, 0},
120 {"file", 1, 0, 0},
121 {0, 0, 0, 0}
122 };
123
124 c = getopt_long (argc, argv, "abc:d:0123456789",
125 long_options, &option_index);
126 if (c == -1)
127 break;
128
129 switch (c)
130 {
131 case 0:
132 printf ("option %s", long_options[option_index].name);
133 if (optarg)
134 printf (" with arg %s", optarg);
135 printf ("\n");
136 break;
137
138 case '0':
139 case '1':
140 case '2':
141 case '3':
142 case '4':
143 case '5':
144 case '6':
145 case '7':
146 case '8':
147 case '9':
148 if (digit_optind != 0 && digit_optind != this_option_optind)
149 printf ("digits occur in two different argv-elements.\n");
150 digit_optind = this_option_optind;
151 printf ("option %c\n", c);
152 break;
153
154 case 'a':
155 printf ("option a\n");
156 break;
157
158 case 'b':
159 printf ("option b\n");
160 break;
161
162 case 'c':
163 printf ("option c with value `%s'\n", optarg);
164 break;
165
166 case 'd':
167 printf ("option d with value `%s'\n", optarg);
168 break;
169
170 case '?':
171 break;
172
173 default:
174 printf ("?? getopt returned character code 0%o ??\n", c);
175 }
176 }
177
178 if (optind < argc)
179 {
180 printf ("non-option ARGV-elements: ");
181 while (optind < argc)
182 printf ("%s ", argv[optind++]);
183 printf ("\n");
184 }
185
186 exit (0);
187 }
188
189 #endif /* TEST */