getopt1.c (4591B)
1 /* getopt_long and getopt_long_only entry points for GNU getopt. 2 Copyright 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 20 USA. */ 21 #include "config.h" 22 #include "getopt.h" 23 24 #if ! defined (__STDC__) || ! __STDC__ 25 /* This is a separate conditional since some stdc systems 26 reject `defined (const)'. */ 27 #ifndef const 28 #define const 29 #endif 30 #endif 31 32 #include <stdio.h> 33 34 /* Comment out all this code if we are using the GNU C Library, and are not 35 actually compiling the library itself. This code is part of the GNU C 36 Library, but also included in many other GNU distributions. Compiling 37 and linking in this code is a waste when using the GNU C library 38 (especially if it is a shared library). Rather than having every GNU 39 program understand `configure --with-gnu-libc' and omit the object files, 40 it is simpler to just do this in the source for each such file. */ 41 42 #define GETOPT_INTERFACE_VERSION 2 43 #if ! defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2 44 #include <gnu-versions.h> 45 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION 46 #define ELIDE_CODE 47 #endif 48 #endif 49 50 #ifndef ELIDE_CODE 51 52 53 /* This needs to come after some library #include 54 to get __GNU_LIBRARY__ defined. */ 55 #ifdef __GNU_LIBRARY__ 56 #include <stdlib.h> 57 #endif 58 59 #ifndef NULL 60 #define NULL 0 61 #endif 62 63 int 64 getopt_long (argc, argv, options, long_options, opt_index) 65 int argc; 66 67 char *const *argv; 68 const char *options; 69 const struct option *long_options; 70 int *opt_index; 71 { 72 return _getopt_internal (argc, argv, options, long_options, opt_index, 0); 73 } 74 75 /* Like getopt_long, but '-' as well as '--' can indicate a long option. 76 If an option that starts with '-' (not '--') doesn't match a long option, 77 but does match a short option, it is parsed as a short option 78 instead. */ 79 80 int 81 getopt_long_only (argc, argv, options, long_options, opt_index) 82 int argc; 83 84 char *const *argv; 85 const char *options; 86 const struct option *long_options; 87 int *opt_index; 88 { 89 return _getopt_internal (argc, argv, options, long_options, opt_index, 1); 90 } 91 92 93 #endif /* Not ELIDE_CODE. */ 94 95 #ifdef TEST 96 97 #include <stdio.h> 98 99 int 100 main (argc, argv) 101 int argc; 102 103 char **argv; 104 { 105 int c; 106 int digit_optind = 0; 107 108 while (1) 109 { 110 int this_option_optind = optind ? optind : 1; 111 int option_index = 0; 112 static struct option long_options[] = { 113 {"add", 1, 0, 0}, 114 {"append", 0, 0, 0}, 115 {"delete", 1, 0, 0}, 116 {"verbose", 0, 0, 0}, 117 {"create", 0, 0, 0}, 118 {"file", 1, 0, 0}, 119 {0, 0, 0, 0} 120 }; 121 122 c = getopt_long (argc, argv, "abc:d:0123456789", 123 long_options, &option_index); 124 if (c == -1) 125 break; 126 127 switch (c) 128 { 129 case 0: 130 printf ("option %s", long_options[option_index].name); 131 if (optarg) 132 printf (" with arg %s", optarg); 133 printf ("\n"); 134 break; 135 136 case '0': 137 case '1': 138 case '2': 139 case '3': 140 case '4': 141 case '5': 142 case '6': 143 case '7': 144 case '8': 145 case '9': 146 if ((digit_optind != 0) && (digit_optind != this_option_optind) ) 147 printf ("digits occur in two different argv-elements.\n"); 148 digit_optind = this_option_optind; 149 printf ("option %c\n", c); 150 break; 151 152 case 'a': 153 printf ("option a\n"); 154 break; 155 156 case 'b': 157 printf ("option b\n"); 158 break; 159 160 case 'c': 161 printf ("option c with value `%s'\n", optarg); 162 break; 163 164 case 'd': 165 printf ("option d with value `%s'\n", optarg); 166 break; 167 168 case '?': 169 break; 170 171 default: 172 printf ("?? getopt returned character code 0%o ??\n", c); 173 } 174 } 175 176 if (optind < argc) 177 { 178 printf ("non-option ARGV-elements: "); 179 while (optind < argc) 180 printf ("%s ", argv[optind++]); 181 printf ("\n"); 182 } 183 184 exit (0); 185 } 186 187 #endif /* TEST */