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libiconv 1.16

    1: /*
    2:  * Copyright (C) 2001, 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:  * DEC-KANJI
   22:  */
   23: 
   24: static int
   25: dec_kanji_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
   26: {
   27:   unsigned char c = *s;
   28:   /* Code set 0 (ASCII or JIS X 0201-1976 Roman) */
   29:   if (c < 0x80)
   30:     return ascii_mbtowc(conv,pwc,s,n);
   31:   /* Code set 1 (JIS X 0208) */
   32:   if (c >= 0xa1 && c < 0xf5) {
   33:     if (n < 2)
   34:       return RET_TOOFEW(0);
   35:     {
   36:       unsigned char c2 = s[1];
   37:       if (c2 >= 0xa1 && c2 < 0xff) {
   38:         unsigned char buf[2];
   39:         buf[0] = c-0x80; buf[1] = c2-0x80;
   40:         return jisx0208_mbtowc(conv,pwc,buf,2);
   41:       }
   42:     }
   43:   }
   44:   return RET_ILSEQ;
   45: }
   46: 
   47: static int
   48: dec_kanji_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
   49: {
   50:   unsigned char buf[2];
   51:   int ret;
   52: 
   53:   /* Code set 0 (ASCII or JIS X 0201-1976 Roman) */
   54:   ret = ascii_wctomb(conv,r,wc,n);
   55:   if (ret != RET_ILUNI)
   56:     return ret;
   57: 
   58:   /* Code set 1 (JIS X 0208) */
   59:   ret = jisx0208_wctomb(conv,buf,wc,2);
   60:   if (ret != RET_ILUNI) {
   61:     if (ret != 2) abort();
   62:     if (n < 2)
   63:       return RET_TOOSMALL;
   64:     r[0] = buf[0]+0x80;
   65:     r[1] = buf[1]+0x80;
   66:     return 2;
   67:   }
   68: 
   69:   return RET_ILUNI;
   70: }