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thodg/libiconv/lib/ucs2internal.h

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  • Author : Bruno Haible
    Date : 2005-05-19 17:14:19
    Hash : 45bd190c
    Message : Update FSF postal address.

  • lib/ucs2internal.h
  • /*
     * Copyright (C) 1999-2001 Free Software Foundation, Inc.
     * This file is part of the GNU LIBICONV Library.
     *
     * The GNU LIBICONV Library is free software; you can redistribute it
     * and/or modify it under the terms of the GNU Library General Public
     * License as published by the Free Software Foundation; either version 2
     * of the License, or (at your option) any later version.
     *
     * The GNU LIBICONV Library is distributed in the hope that it will be
     * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     * Library General Public License for more details.
     *
     * You should have received a copy of the GNU Library General Public
     * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
     * If not, write to the Free Software Foundation, Inc., 51 Franklin Street,
     * Fifth Floor, Boston, MA 02110-1301, USA.
     */
    
    /*
     * UCS-2-INTERNAL = UCS-2 with machine dependent endianness and alignment
     */
    
    static int
    ucs2internal_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
    {
      if (n >= 2) {
        unsigned short x = *(const unsigned short *)s;
        if (x >= 0xd800 && x < 0xe000) {
          return RET_ILSEQ;
        } else {
          *pwc = x;
          return 2;
        }
      }
      return RET_TOOFEW(0);
    }
    
    static int
    ucs2internal_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
    {
      if (wc < 0x10000 && !(wc >= 0xd800 && wc < 0xe000)) {
        if (n >= 2) {
          *(unsigned short *)r = wc;
          return 2;
        } else
          return RET_TOOSMALL;
      } else
        return RET_ILUNI;
    }