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libiconv

    1: /*
    2:  * Copyright (C) 1999-2000 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: /*
   22:  * UCS-4BE = UCS-4 big endian
   23:  */
   24: 
   25: static int
   26: ucs4be_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
   27: {
   28:   if (n >= 4) {
   29:     *pwc = (s[0] << 24) + (s[1] << 16) + (s[2] << 8) + s[3];
   30:     return 4;
   31:   }
   32:   return RET_TOOFEW(0);
   33: }
   34: 
   35: static int
   36: ucs4be_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
   37: {
   38:   if (n >= 4) {
   39:     r[0] = (unsigned char) (wc >> 24);
   40:     r[1] = (unsigned char) (wc >> 16);
   41:     r[2] = (unsigned char) (wc >> 8);
   42:     r[3] = (unsigned char) wc;
   43:     return 4;
   44:   } else
   45:     return RET_TOOSMALL;
   46: }