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getopt1.c

    00001 /* getopt_long and getopt_long_only entry points for GNU getopt.
    00002    Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98
    00003      Free Software Foundation, Inc.
    00004    This file is part of the GNU C Library.
    00005
    00006    The GNU C Library is free software; you can redistribute it and/or
    00007    modify it under the terms of the GNU Lesser General Public
    00008    License as published by the Free Software Foundation; either
    00009    version 2.1 of the License, or (at your option) any later version.
    00010
    00011    The GNU C Library is distributed in the hope that it will be useful,
    00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
    00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00014    Lesser General Public License for more details.
    00015
    00016    You should have received a copy of the GNU Lesser General Public
    00017    License along with the GNU C Library; if not, write to the Free
    00018    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    00019    02111-1307 USA.  */
    00020
    00021 #ifdef HAVE_CONFIG_H
    00022 #include <config.h>
    00023 #endif
    00024
    00025 #include "getopt.h"
    00026
    00027 #if !defined __STDC__ || !__STDC__
    00028 /* This is a separate conditional since some stdc systems
    00029    reject `defined (const)'.  */
    00030 #ifndef const
    00031 #define const
    00032 #endif
    00033 #endif
    00034
    00035 #include <stdio.h>
    00036
    00037 /* Comment out all this code if we are using the GNU C Library, and are not
    00038    actually compiling the library itself.  This code is part of the GNU C
    00039    Library, but also included in many other GNU distributions.  Compiling
    00040    and linking in this code is a waste when using the GNU C library
    00041    (especially if it is a shared library).  Rather than having every GNU
    00042    program understand `configure --with-gnu-libc' and omit the object files,
    00043    it is simpler to just do this in the source for each such file.  */
    00044
    00045 #define GETOPT_INTERFACE_VERSION 2
    00046 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
    00047 #include <gnu-versions.h>
    00048 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
    00049 #define ELIDE_CODE
    00050 #endif
    00051 #endif
    00052
    00053 #ifndef ELIDE_CODE
    00054
    00055
    00056 /* This needs to come after some library #include
    00057    to get __GNU_LIBRARY__ defined.  */
    00058 #ifdef __GNU_LIBRARY__
    00059 #include <stdlib.h>
    00060 #endif
    00061
    00062 #ifndef NULL
    00063 #define NULL 0
    00064 #endif
    00065
    00066 int
    00067 getopt_long (argc, argv, options, long_options, opt_index)
    00068      int argc;
    00069      char *const *argv;
    00070      const char *options;
    00071      const struct option *long_options;
    00072      int *opt_index;
    00073 {
    00074   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
    00075 }
    00076
    00077 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
    00078    If an option that starts with '-' (not '--') doesn't match a long option,
    00079    but does match a short option, it is parsed as a short option
    00080    instead.  */
    00081
    00082 int
    00083 getopt_long_only (argc, argv, options, long_options, opt_index)
    00084      int argc;
    00085      char *const *argv;
    00086      const char *options;
    00087      const struct option *long_options;
    00088      int *opt_index;
    00089 {
    00090   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
    00091 }
    00092
    00093
    00094 #endif  /* Not ELIDE_CODE.  */
    00095
    00096 #ifdef TEST
    00097
    00098 #include <stdio.h>
    00099
    00100 int
    00101 main (argc, argv)
    00102      int argc;
    00103      char **argv;
    00104 {
    00105   int c;
    00106   int digit_optind = 0;
    00107
    00108   while (1)
    00109     {
    00110       int this_option_optind = optind ? optind : 1;
    00111       int option_index = 0;
    00112       static struct option long_options[] =
    00113       {
    00114         {"add", 1, 0, 0},
    00115         {"append", 0, 0, 0},
    00116         {"delete", 1, 0, 0},
    00117         {"verbose", 0, 0, 0},
    00118         {"create", 0, 0, 0},
    00119         {"file", 1, 0, 0},
    00120         {0, 0, 0, 0}
    00121       };
    00122
    00123       c = getopt_long (argc, argv, "abc:d:0123456789",
    00124                        long_options, &option_index);
    00125       if (c == -1)
    00126         break;
    00127
    00128       switch (c)
    00129         {
    00130         case 0:
    00131           printf ("option %s", long_options[option_index].name);
    00132           if (optarg)
    00133             printf (" with arg %s", optarg);
    00134           printf ("\n");
    00135           break;
    00136
    00137         case '0':
    00138         case '1':
    00139         case '2':
    00140         case '3':
    00141         case '4':
    00142         case '5':
    00143         case '6':
    00144         case '7':
    00145         case '8':
    00146         case '9':
    00147           if (digit_optind != 0 && digit_optind != this_option_optind)
    00148             printf ("digits occur in two different argv-elements.\n");
    00149           digit_optind = this_option_optind;
    00150           printf ("option %c\n", c);
    00151           break;
    00152
    00153         case 'a':
    00154           printf ("option a\n");
    00155           break;
    00156
    00157         case 'b':
    00158           printf ("option b\n");
    00159           break;
    00160
    00161         case 'c':
    00162           printf ("option c with value `%s'\n", optarg);
    00163           break;
    00164
    00165         case 'd':
    00166           printf ("option d with value `%s'\n", optarg);
    00167           break;
    00168
    00169         case '?':
    00170           break;
    00171
    00172         default:
    00173           printf ("?? getopt returned character code 0%o ??\n", c);
    00174         }
    00175     }
    00176
    00177   if (optind < argc)
    00178     {
    00179       printf ("non-option ARGV-elements: ");
    00180       while (optind < argc)
    00181         printf ("%s ", argv[optind++]);
    00182       printf ("\n");
    00183     }
    00184
    00185   exit (0);
    00186 }
    00187
    00188 #endif /* TEST */