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Annotation of GNUtools/cc/getopt1.c, revision 1.1

1.1     ! root        1: /* getopt_long and getopt_long_only entry points for GNU getopt.
        !             2:    Copyright (C) 1987, 88, 89, 90, 91, 92, 1993
        !             3:        Free Software Foundation, Inc.
        !             4: 
        !             5:    This program is free software; you can redistribute it and/or modify it
        !             6:    under the terms of the GNU General Public License as published by the
        !             7:    Free Software Foundation; either version 2, or (at your option) any
        !             8:    later version.
        !             9: 
        !            10:    This program is distributed in the hope that it will be useful,
        !            11:    but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            12:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            13:    GNU General Public License for more details.
        !            14: 
        !            15:    You should have received a copy of the GNU General Public License
        !            16:    along with this program; if not, write to the Free Software
        !            17:    Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            18: 
        !            19: #ifdef HAVE_CONFIG_H
        !            20: #if defined (emacs) || defined (CONFIG_BROKETS)
        !            21: /* We use <config.h> instead of "config.h" so that a compilation
        !            22:    using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
        !            23:    (which it would do because it found this file in $srcdir).  */
        !            24: #include <config.h>
        !            25: #else
        !            26: #include "config.h"
        !            27: #endif
        !            28: #endif
        !            29: 
        !            30: #include "getopt.h"
        !            31: 
        !            32: #ifndef __STDC__
        !            33: /* This is a separate conditional since some stdc systems
        !            34:    reject `defined (const)'.  */
        !            35: #ifndef const
        !            36: #define const
        !            37: #endif
        !            38: #endif
        !            39: 
        !            40: #include <stdio.h>
        !            41: 
        !            42: /* Comment out all this code if we are using the GNU C Library, and are not
        !            43:    actually compiling the library itself.  This code is part of the GNU C
        !            44:    Library, but also included in many other GNU distributions.  Compiling
        !            45:    and linking in this code is a waste when using the GNU C library
        !            46:    (especially if it is a shared library).  Rather than having every GNU
        !            47:    program understand `configure --with-gnu-libc' and omit the object files,
        !            48:    it is simpler to just do this in the source for each such file.  */
        !            49: 
        !            50: #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
        !            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: #else
        !            58: char *getenv ();
        !            59: #endif
        !            60: 
        !            61: #ifndef        NULL
        !            62: #define NULL 0
        !            63: #endif
        !            64: 
        !            65: int
        !            66: getopt_long (argc, argv, options, long_options, opt_index)
        !            67:      int argc;
        !            68:      char *const *argv;
        !            69:      const char *options;
        !            70:      const struct option *long_options;
        !            71:      int *opt_index;
        !            72: {
        !            73:   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
        !            74: }
        !            75: 
        !            76: /* Like getopt_long, but '-' as well as '--' can indicate a long option.
        !            77:    If an option that starts with '-' (not '--') doesn't match a long option,
        !            78:    but does match a short option, it is parsed as a short option
        !            79:    instead.  */
        !            80: 
        !            81: int
        !            82: getopt_long_only (argc, argv, options, long_options, opt_index)
        !            83:      int argc;
        !            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 /* _LIBC or not __GNU_LIBRARY__.  */
        !            94: 
        !            95: #ifdef TEST
        !            96: 
        !            97: #include <stdio.h>
        !            98: 
        !            99: int
        !           100: main (argc, argv)
        !           101:      int argc;
        !           102:      char **argv;
        !           103: {
        !           104:   int c;
        !           105:   int digit_optind = 0;
        !           106: 
        !           107:   while (1)
        !           108:     {
        !           109:       int this_option_optind = optind ? optind : 1;
        !           110:       int option_index = 0;
        !           111:       static struct option long_options[] =
        !           112:       {
        !           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 == EOF)
        !           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 */

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