1 /* getopt_long and getopt_long_only entry points for GNU getopt. 2 Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2005 3 Free Software Foundation, Inc. 4 5 NOTE: This source is derived from an old version taken from the GNU C 6 Library (glibc). 7 8 This program is free software; you can redistribute it and/or modify it 9 under the terms of the GNU General Public License as published by the 10 Free Software Foundation; either version 2, or (at your option) any 11 later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 21 USA. */ 22 23 #ifdef HAVE_CONFIG_H 24 #include <config.h> 25 #endif 26 27 #if !defined __STDC__ || !__STDC__ 28 /* This is a separate conditional since some stdc systems 29 reject `defined (const)'. */ 30 #ifndef const 31 #define const 32 #endif 33 #endif 34 35 #include <stdio.h> 36 37 #include "getopt.h" 38 39 /* Comment out all this code if we are using the GNU C Library, and are not 40 actually compiling the library itself. This code is part of the GNU C 41 Library, but also included in many other GNU distributions. Compiling 42 and linking in this code is a waste when using the GNU C library 43 (especially if it is a shared library). Rather than having every GNU 44 program understand `configure --with-gnu-libc' and omit the object files, 45 it is simpler to just do this in the source for each such file. */ 46 47 #define GETOPT_INTERFACE_VERSION 2 48 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2 49 #include <gnu-versions.h> 50 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION 51 #define ELIDE_CODE 52 #endif 53 #endif 54 55 #ifndef ELIDE_CODE 56 57 58 /* This needs to come after some library #include 59 to get __GNU_LIBRARY__ defined. */ 60 #ifdef __GNU_LIBRARY__ 61 #include <stdlib.h> 62 #endif 63 64 #ifndef NULL 65 #define NULL 0 66 #endif 67 68 int 69 getopt_long (int argc, char *const *argv, const char *options, 70 const struct option *long_options, 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 (int argc, char *const *argv, const char *options, 82 const struct option *long_options, int *opt_index) 83 { 84 return _getopt_internal (argc, argv, options, long_options, opt_index, 1); 85 } 86 87 88 #endif /* Not ELIDE_CODE. */ 89 90 #ifdef TEST 91 92 #include <stdio.h> 93 94 int 95 main (int argc, char **argv) 96 { 97 int c; 98 int digit_optind = 0; 99 100 while (1) 101 { 102 int this_option_optind = optind ? optind : 1; 103 int option_index = 0; 104 static struct option long_options[] = 105 { 106 {"add", 1, 0, 0}, 107 {"append", 0, 0, 0}, 108 {"delete", 1, 0, 0}, 109 {"verbose", 0, 0, 0}, 110 {"create", 0, 0, 0}, 111 {"file", 1, 0, 0}, 112 {0, 0, 0, 0} 113 }; 114 115 c = getopt_long (argc, argv, "abc:d:0123456789", 116 long_options, &option_index); 117 if (c == -1) 118 break; 119 120 switch (c) 121 { 122 case 0: 123 printf ("option %s", long_options[option_index].name); 124 if (optarg) 125 printf (" with arg %s", optarg); 126 printf ("\n"); 127 break; 128 129 case '0': 130 case '1': 131 case '2': 132 case '3': 133 case '4': 134 case '5': 135 case '6': 136 case '7': 137 case '8': 138 case '9': 139 if (digit_optind != 0 && digit_optind != this_option_optind) 140 printf ("digits occur in two different argv-elements.\n"); 141 digit_optind = this_option_optind; 142 printf ("option %c\n", c); 143 break; 144 145 case 'a': 146 printf ("option a\n"); 147 break; 148 149 case 'b': 150 printf ("option b\n"); 151 break; 152 153 case 'c': 154 printf ("option c with value `%s'\n", optarg); 155 break; 156 157 case 'd': 158 printf ("option d with value `%s'\n", optarg); 159 break; 160 161 case '?': 162 break; 163 164 default: 165 printf ("?? getopt returned character code 0%o ??\n", c); 166 } 167 } 168 169 if (optind < argc) 170 { 171 printf ("non-option ARGV-elements: "); 172 while (optind < argc) 173 printf ("%s ", argv[optind++]); 174 printf ("\n"); 175 } 176 177 exit (0); 178 } 179 180 #endif /* TEST */ 181