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libiconv 1.16

    1: /*
    2:  * Copyright (C) 1999-2000, 2016 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, see <https://www.gnu.org/licenses/>.
   18:  */
   19: 
   20: /*
   21:  * UCS-4BE = UCS-4 big endian
   22:  */
   23: 
   24: static int
   25: ucs4be_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
   26: {
   27:   if (n >= 4) {
   28:     *pwc = (s[0] << 24) + (s[1] << 16) + (s[2] << 8) + s[3];
   29:     return 4;
   30:   }
   31:   return RET_TOOFEW(0);
   32: }
   33: 
   34: static int
   35: ucs4be_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
   36: {
   37:   if (n >= 4) {
   38:     r[0] = (unsigned char) (wc >> 24);
   39:     r[1] = (unsigned char) (wc >> 16);
   40:     r[2] = (unsigned char) (wc >> 8);
   41:     r[3] = (unsigned char) wc;
   42:     return 4;
   43:   } else
   44:     return RET_TOOSMALL;
   45: }