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libiconv 1.16

    1: /*
    2:  * Copyright (C) 1999-2001, 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:  * ISO646-JP
   22:  * also known as JIS_C6220-1969-RO
   23:  */
   24: 
   25: /* This is the lower half of JIS_X0201. */
   26: 
   27: static int
   28: iso646_jp_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
   29: {
   30:   unsigned char c = *s;
   31:   if (c < 0x80) {
   32:     if (c == 0x5c)
   33:       *pwc = (ucs4_t) 0x00a5;
   34:     else if (c == 0x7e)
   35:       *pwc = (ucs4_t) 0x203e;
   36:     else
   37:       *pwc = (ucs4_t) c;
   38:     return 1;
   39:   }
   40:   return RET_ILSEQ;
   41: }
   42: 
   43: static int
   44: iso646_jp_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
   45: {
   46:   if (wc < 0x0080 && !(wc == 0x005c || wc == 0x007e)) {
   47:     *r = wc;
   48:     return 1;
   49:   }
   50:   if (wc == 0x00a5) {
   51:     *r = 0x5c;
   52:     return 1;
   53:   }
   54:   if (wc == 0x203e) {
   55:     *r = 0x7e;
   56:     return 1;
   57:   }
   58:   return RET_ILUNI;
   59: }