iso646_cn.h 1.5 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-CN
  22. * also known as GB_1988-80
  23. */
  24. static int
  25. iso646_cn_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
  26. {
  27. unsigned char c = *s;
  28. if (c < 0x80) {
  29. if (c == 0x24)
  30. *pwc = (ucs4_t) 0x00a5;
  31. else if (c == 0x7e)
  32. *pwc = (ucs4_t) 0x203e;
  33. else
  34. *pwc = (ucs4_t) c;
  35. return 1;
  36. }
  37. return RET_ILSEQ;
  38. }
  39. static int
  40. iso646_cn_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
  41. {
  42. if (wc < 0x0080 && !(wc == 0x0024 || wc == 0x007e)) {
  43. *r = wc;
  44. return 1;
  45. }
  46. if (wc == 0x00a5) {
  47. *r = 0x24;
  48. return 1;
  49. }
  50. if (wc == 0x203e) {
  51. *r = 0x7e;
  52. return 1;
  53. }
  54. return RET_ILUNI;
  55. }