ucs2be.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. * UCS-2BE = UCS-2 big endian
  22. */
  23. static int
  24. ucs2be_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
  25. {
  26. if (n >= 2) {
  27. if (s[0] >= 0xd8 && s[0] < 0xe0) {
  28. return RET_ILSEQ;
  29. } else {
  30. *pwc = (s[0] << 8) + s[1];
  31. return 2;
  32. }
  33. }
  34. return RET_TOOFEW(0);
  35. }
  36. static int
  37. ucs2be_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
  38. {
  39. if (wc < 0x10000 && !(wc >= 0xd800 && wc < 0xe000)) {
  40. if (n >= 2) {
  41. r[0] = (unsigned char) (wc >> 8);
  42. r[1] = (unsigned char) wc;
  43. return 2;
  44. } else
  45. return RET_TOOSMALL;
  46. }
  47. return RET_ILUNI;
  48. }