getopt.h 2.3 KB

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  1. /*-
  2. * Copyright (c) 2000 The NetBSD Foundation, Inc.
  3. * All rights reserved.
  4. *
  5. * This code is derived from software contributed to The NetBSD Foundation
  6. * by Dieter Baron and Thomas Klausner.
  7. *
  8. * Redistribution and use in source and binary forms, with or without
  9. * modification, are permitted provided that the following conditions
  10. * are met:
  11. * 1. Redistributions of source code must retain the above copyright
  12. * notice, this list of conditions and the following disclaimer.
  13. * 2. Redistributions in binary form must reproduce the above copyright
  14. * notice, this list of conditions and the following disclaimer in the
  15. * documentation and/or other materials provided with the distribution.
  16. *
  17. * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  18. * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  19. * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20. * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  21. * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  22. * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  23. * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24. * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  25. * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  26. * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  27. * POSSIBILITY OF SUCH DAMAGE.
  28. *
  29. * $NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $
  30. */
  31. #ifndef _GETOPT_H_
  32. #define _GETOPT_H_
  33. /*
  34. * Gnu like getopt_long() and BSD4.4 getsubopt()/optreset extensions
  35. */
  36. #define no_argument 0
  37. #define required_argument 1
  38. #define optional_argument 2
  39. #ifdef __cplusplus
  40. extern "C" {
  41. #endif
  42. struct option {
  43. /* name of long option */
  44. const char *name;
  45. /*
  46. * one of no_argument, required_argument, and optional_argument:
  47. * whether option takes an argument
  48. */
  49. int has_arg;
  50. /* if not NULL, set *flag to val when option found */
  51. int *flag;
  52. /* if flag not NULL, value to set *flag to; else return value */
  53. int val;
  54. };
  55. int getopt_long(int, char * const *, const char *,
  56. const struct option *, int *);
  57. extern int optreset;
  58. extern char *optarg;
  59. extern int opterr;
  60. extern int optind;
  61. extern int optopt;
  62. #ifdef __cplusplus
  63. };
  64. #endif
  65. #endif /* !_GETOPT_H_ */