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Annotation of gcc/getopt1.c, revision 1.1

1.1     ! root        1: /* Getopt for GNU.
        !             2:    Copyright (C) 1987, 88, 89, 90, 91, 1992 Free Software Foundation, Inc.
        !             3: 
        !             4:    This program is free software; you can redistribute it and/or modify
        !             5:    it under the terms of the GNU General Public License as published by
        !             6:    the Free Software Foundation; either version 2, or (at your option)
        !             7:    any later version.
        !             8: 
        !             9:    This program is distributed in the hope that it will be useful,
        !            10:    but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            11:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            12:    GNU General Public License for more details.
        !            13: 
        !            14:    You should have received a copy of the GNU General Public License
        !            15:    along with this program; if not, write to the Free Software
        !            16:    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            17: 
        !            18: #ifdef LIBC
        !            19: /* For when compiled as part of the GNU C library.  */
        !            20: #include <ansidecl.h>
        !            21: #endif
        !            22: 
        !            23: #include "getopt.h"
        !            24: 
        !            25: #ifndef __STDC__
        !            26: #define const
        !            27: #endif
        !            28: 
        !            29: #if defined(STDC_HEADERS) || defined(__GNU_LIBRARY__) || defined (LIBC)
        !            30: #include <stdlib.h>
        !            31: #else /* STDC_HEADERS or __GNU_LIBRARY__ */
        !            32: char *getenv ();
        !            33: #endif /* STDC_HEADERS or __GNU_LIBRARY__ */
        !            34: 
        !            35: #if !defined (NULL)
        !            36: #define NULL 0
        !            37: #endif
        !            38: 
        !            39: int
        !            40: getopt_long (argc, argv, options, long_options, opt_index)
        !            41:      int argc;
        !            42:      char *const *argv;
        !            43:      const char *options;
        !            44:      const struct option *long_options;
        !            45:      int *opt_index;
        !            46: {
        !            47:   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
        !            48: }
        !            49: 
        !            50: /* Like getopt_long, but '-' as well as '--' can indicate a long option.
        !            51:    If an option that starts with '-' (not '--') doesn't match a long option,
        !            52:    but does match a short option, it is parsed as a short option
        !            53:    instead. */
        !            54: 
        !            55: int 
        !            56: getopt_long_only (argc, argv, options, long_options, opt_index)
        !            57:      int argc;
        !            58:      char *const *argv;
        !            59:      const char *options;
        !            60:      const struct option *long_options;
        !            61:      int *opt_index;
        !            62: {
        !            63:   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
        !            64: }
        !            65: 
        !            66: #ifdef TEST
        !            67: 
        !            68: #include <stdio.h>
        !            69: 
        !            70: int
        !            71: main (argc, argv)
        !            72:      int argc;
        !            73:      char **argv;
        !            74: {
        !            75:   int c;
        !            76:   int digit_optind = 0;
        !            77: 
        !            78:   while (1)
        !            79:     {
        !            80:       int this_option_optind = optind ? optind : 1;
        !            81:       int option_index = 0;
        !            82:       static struct option long_options[] =
        !            83:       {
        !            84:        {"add", 1, 0, 0},
        !            85:        {"append", 0, 0, 0},
        !            86:        {"delete", 1, 0, 0},
        !            87:        {"verbose", 0, 0, 0},
        !            88:        {"create", 0, 0, 0},
        !            89:        {"file", 1, 0, 0},
        !            90:        {0, 0, 0, 0}
        !            91:       };
        !            92: 
        !            93:       c = getopt_long (argc, argv, "abc:d:0123456789",
        !            94:                       long_options, &option_index);
        !            95:       if (c == EOF)
        !            96:        break;
        !            97: 
        !            98:       switch (c)
        !            99:        {
        !           100:        case 0:
        !           101:          printf ("option %s", long_options[option_index].name);
        !           102:          if (optarg)
        !           103:            printf (" with arg %s", optarg);
        !           104:          printf ("\n");
        !           105:          break;
        !           106: 
        !           107:        case '0':
        !           108:        case '1':
        !           109:        case '2':
        !           110:        case '3':
        !           111:        case '4':
        !           112:        case '5':
        !           113:        case '6':
        !           114:        case '7':
        !           115:        case '8':
        !           116:        case '9':
        !           117:          if (digit_optind != 0 && digit_optind != this_option_optind)
        !           118:            printf ("digits occur in two different argv-elements.\n");
        !           119:          digit_optind = this_option_optind;
        !           120:          printf ("option %c\n", c);
        !           121:          break;
        !           122: 
        !           123:        case 'a':
        !           124:          printf ("option a\n");
        !           125:          break;
        !           126: 
        !           127:        case 'b':
        !           128:          printf ("option b\n");
        !           129:          break;
        !           130: 
        !           131:        case 'c':
        !           132:          printf ("option c with value `%s'\n", optarg);
        !           133:          break;
        !           134: 
        !           135:        case 'd':
        !           136:          printf ("option d with value `%s'\n", optarg);
        !           137:          break;
        !           138: 
        !           139:        case '?':
        !           140:          break;
        !           141: 
        !           142:        default:
        !           143:          printf ("?? getopt returned character code 0%o ??\n", c);
        !           144:        }
        !           145:     }
        !           146: 
        !           147:   if (optind < argc)
        !           148:     {
        !           149:       printf ("non-option ARGV-elements: ");
        !           150:       while (optind < argc)
        !           151:        printf ("%s ", argv[optind++]);
        !           152:       printf ("\n");
        !           153:     }
        !           154: 
        !           155:   exit (0);
        !           156: }
        !           157: 
        !           158: #endif /* TEST */

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