getopt1.c 3.9 KB

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  1. /* getopt_long and getopt_long_only entry points for GNU getopt.
  2. Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2004
  3. Free Software Foundation, Inc.
  4. This file is part of the GNU C Library.
  5. This program is free software; you can redistribute it and/or modify
  6. it under the terms of the GNU General Public License as published by
  7. the Free Software Foundation; either version 2, or (at your option)
  8. any later version.
  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. You should have received a copy of the GNU General Public License along
  14. with this program; if not, write to the Free Software Foundation,
  15. Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
  16. #ifdef HAVE_CONFIG_H
  17. # include <config.h>
  18. #endif
  19. #ifdef _LIBC
  20. # include <getopt.h>
  21. #else
  22. # include "getopt.h"
  23. #endif
  24. #include "getopt_int.h"
  25. #include <stdio.h>
  26. /* This needs to come after some library #include
  27. to get __GNU_LIBRARY__ defined. */
  28. #ifdef __GNU_LIBRARY__
  29. #include <stdlib.h>
  30. #endif
  31. #ifndef NULL
  32. #define NULL 0
  33. #endif
  34. int
  35. getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
  36. const struct option *long_options, int *opt_index)
  37. {
  38. return _getopt_internal (argc, (char **) argv, options, long_options,
  39. opt_index, 0, 0);
  40. }
  41. int
  42. _getopt_long_r (int argc, char **argv, const char *options,
  43. const struct option *long_options, int *opt_index,
  44. struct _getopt_data *d)
  45. {
  46. return _getopt_internal_r (argc, argv, options, long_options, opt_index,
  47. 0, 0, d);
  48. }
  49. /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  50. If an option that starts with '-' (not '--') doesn't match a long option,
  51. but does match a short option, it is parsed as a short option
  52. instead. */
  53. int
  54. getopt_long_only (int argc, char *__getopt_argv_const *argv,
  55. const char *options,
  56. const struct option *long_options, int *opt_index)
  57. {
  58. return _getopt_internal (argc, (char **) argv, options, long_options,
  59. opt_index, 1, 0);
  60. }
  61. int
  62. _getopt_long_only_r (int argc, char **argv, const char *options,
  63. const struct option *long_options, int *opt_index,
  64. struct _getopt_data *d)
  65. {
  66. return _getopt_internal_r (argc, argv, options, long_options, opt_index,
  67. 1, 0, d);
  68. }
  69. #ifdef TEST
  70. #include <stdio.h>
  71. int
  72. main (int argc, char **argv)
  73. {
  74. int c;
  75. int digit_optind = 0;
  76. while (1)
  77. {
  78. int this_option_optind = optind ? optind : 1;
  79. int option_index = 0;
  80. static struct option long_options[] =
  81. {
  82. {"add", 1, 0, 0},
  83. {"append", 0, 0, 0},
  84. {"delete", 1, 0, 0},
  85. {"verbose", 0, 0, 0},
  86. {"create", 0, 0, 0},
  87. {"file", 1, 0, 0},
  88. {0, 0, 0, 0}
  89. };
  90. c = getopt_long (argc, argv, "abc:d:0123456789",
  91. long_options, &option_index);
  92. if (c == -1)
  93. break;
  94. switch (c)
  95. {
  96. case 0:
  97. printf ("option %s", long_options[option_index].name);
  98. if (optarg)
  99. printf (" with arg %s", optarg);
  100. printf ("\n");
  101. break;
  102. case '0':
  103. case '1':
  104. case '2':
  105. case '3':
  106. case '4':
  107. case '5':
  108. case '6':
  109. case '7':
  110. case '8':
  111. case '9':
  112. if (digit_optind != 0 && digit_optind != this_option_optind)
  113. printf ("digits occur in two different argv-elements.\n");
  114. digit_optind = this_option_optind;
  115. printf ("option %c\n", c);
  116. break;
  117. case 'a':
  118. printf ("option a\n");
  119. break;
  120. case 'b':
  121. printf ("option b\n");
  122. break;
  123. case 'c':
  124. printf ("option c with value `%s'\n", optarg);
  125. break;
  126. case 'd':
  127. printf ("option d with value `%s'\n", optarg);
  128. break;
  129. case '?':
  130. break;
  131. default:
  132. printf ("?? getopt returned character code 0%o ??\n", c);
  133. }
  134. }
  135. if (optind < argc)
  136. {
  137. printf ("non-option ARGV-elements: ");
  138. while (optind < argc)
  139. printf ("%s ", argv[optind++]);
  140. printf ("\n");
  141. }
  142. exit (0);
  143. }
  144. #endif /* TEST */