/contrib/bind9/lib/dns/rdatasetiter.c

https://bitbucket.org/freebsd/freebsd-head/ · C · 80 lines · 31 code · 19 blank · 30 comment · 2 complexity · 82ca33857df2a1a346a7c2e8f7325a92 MD5 · raw file

  1. /*
  2. * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
  3. * Copyright (C) 1999-2001 Internet Software Consortium.
  4. *
  5. * Permission to use, copy, modify, and/or distribute this software for any
  6. * purpose with or without fee is hereby granted, provided that the above
  7. * copyright notice and this permission notice appear in all copies.
  8. *
  9. * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10. * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11. * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12. * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13. * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14. * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15. * PERFORMANCE OF THIS SOFTWARE.
  16. */
  17. /* $Id: rdatasetiter.c,v 1.16 2007/06/19 23:47:16 tbox Exp $ */
  18. /*! \file */
  19. #include <config.h>
  20. #include <stddef.h>
  21. #include <isc/util.h>
  22. #include <dns/rdataset.h>
  23. #include <dns/rdatasetiter.h>
  24. void
  25. dns_rdatasetiter_destroy(dns_rdatasetiter_t **iteratorp) {
  26. /*
  27. * Destroy '*iteratorp'.
  28. */
  29. REQUIRE(iteratorp != NULL);
  30. REQUIRE(DNS_RDATASETITER_VALID(*iteratorp));
  31. (*iteratorp)->methods->destroy(iteratorp);
  32. ENSURE(*iteratorp == NULL);
  33. }
  34. isc_result_t
  35. dns_rdatasetiter_first(dns_rdatasetiter_t *iterator) {
  36. /*
  37. * Move the rdataset cursor to the first rdataset at the node (if any).
  38. */
  39. REQUIRE(DNS_RDATASETITER_VALID(iterator));
  40. return (iterator->methods->first(iterator));
  41. }
  42. isc_result_t
  43. dns_rdatasetiter_next(dns_rdatasetiter_t *iterator) {
  44. /*
  45. * Move the rdataset cursor to the next rdataset at the node (if any).
  46. */
  47. REQUIRE(DNS_RDATASETITER_VALID(iterator));
  48. return (iterator->methods->next(iterator));
  49. }
  50. void
  51. dns_rdatasetiter_current(dns_rdatasetiter_t *iterator,
  52. dns_rdataset_t *rdataset)
  53. {
  54. /*
  55. * Return the current rdataset.
  56. */
  57. REQUIRE(DNS_RDATASETITER_VALID(iterator));
  58. REQUIRE(DNS_RDATASET_VALID(rdataset));
  59. REQUIRE(! dns_rdataset_isassociated(rdataset));
  60. iterator->methods->current(iterator, rdataset);
  61. }