iso646_jp.h 1.6 KB

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  1. /*
  2. * Copyright (C) 1999-2001 Free Software Foundation, Inc.
  3. * This file is part of the GNU LIBICONV Library.
  4. *
  5. * The GNU LIBICONV Library is free software; you can redistribute it
  6. * and/or modify it under the terms of the GNU Library General Public
  7. * License as published by the Free Software Foundation; either version 2
  8. * of the License, or (at your option) any later version.
  9. *
  10. * The GNU LIBICONV Library is distributed in the hope that it will be
  11. * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13. * Library General Public License for more details.
  14. *
  15. * You should have received a copy of the GNU Library General Public
  16. * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
  17. * If not, write to the Free Software Foundation, Inc., 51 Franklin Street,
  18. * Fifth Floor, Boston, MA 02110-1301, USA.
  19. */
  20. /*
  21. * ISO646-JP
  22. * also known as JIS_C6220-1969-RO
  23. */
  24. /* This is the lower half of JIS_X0201. */
  25. static int
  26. iso646_jp_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
  27. {
  28. unsigned char c = *s;
  29. if (c < 0x80) {
  30. if (c == 0x5c)
  31. *pwc = (ucs4_t) 0x00a5;
  32. else if (c == 0x7e)
  33. *pwc = (ucs4_t) 0x203e;
  34. else
  35. *pwc = (ucs4_t) c;
  36. return 1;
  37. }
  38. return RET_ILSEQ;
  39. }
  40. static int
  41. iso646_jp_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
  42. {
  43. if (wc < 0x0080 && !(wc == 0x005c || wc == 0x007e)) {
  44. *r = wc;
  45. return 1;
  46. }
  47. if (wc == 0x00a5) {
  48. *r = 0x5c;
  49. return 1;
  50. }
  51. if (wc == 0x203e) {
  52. *r = 0x7e;
  53. return 1;
  54. }
  55. return RET_ILUNI;
  56. }