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Annotation of embedaddon/libiconv/lib/utf32le.h, revision 1.1

1.1     ! misho       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: /*
        !            22:  * UTF-32LE
        !            23:  */
        !            24: 
        !            25: /* Specification: Unicode 3.1 Standard Annex #19 */
        !            26: 
        !            27: static int
        !            28: utf32le_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
        !            29: {
        !            30:   if (n >= 4) {
        !            31:     ucs4_t wc = s[0] + (s[1] << 8) + (s[2] << 16) + (s[3] << 24);
        !            32:     if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000)) {
        !            33:       *pwc = wc;
        !            34:       return 4;
        !            35:     } else
        !            36:       return RET_ILSEQ;
        !            37:   }
        !            38:   return RET_TOOFEW(0);
        !            39: }
        !            40: 
        !            41: static int
        !            42: utf32le_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
        !            43: {
        !            44:   if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000)) {
        !            45:     if (n >= 4) {
        !            46:       r[0] = (unsigned char) wc;
        !            47:       r[1] = (unsigned char) (wc >> 8);
        !            48:       r[2] = (unsigned char) (wc >> 16);
        !            49:       r[3] = 0;
        !            50:       return 4;
        !            51:     } else
        !            52:       return RET_TOOSMALL;
        !            53:   }
        !            54:   return RET_ILUNI;
        !            55: }