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libiconv

    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:  * JISX0201.1976-0
   23:  */
   24: 
   25: static int
   26: jisx0201_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
   27: {
   28:   unsigned char c = *s;
   29:   if (c < 0x80) {
   30:     if (c == 0x5c)
   31:       *pwc = (ucs4_t) 0x00a5;
   32:     else if (c == 0x7e)
   33:       *pwc = (ucs4_t) 0x203e;
   34:     else
   35:       *pwc = (ucs4_t) c;
   36:     return 1;
   37:   } else {
   38:     if (c >= 0xa1 && c < 0xe0) {
   39:       *pwc = (ucs4_t) c + 0xfec0;
   40:       return 1;
   41:     }
   42:   }
   43:   return RET_ILSEQ;
   44: }
   45: 
   46: static int
   47: jisx0201_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
   48: {
   49:   if (wc < 0x0080 && !(wc == 0x005c || wc == 0x007e)) {
   50:     *r = wc;
   51:     return 1;
   52:   }
   53:   if (wc == 0x00a5) {
   54:     *r = 0x5c;
   55:     return 1;
   56:   }
   57:   if (wc == 0x203e) {
   58:     *r = 0x7e;
   59:     return 1;
   60:   }
   61:   if (wc >= 0xff61 && wc < 0xffa0) {
   62:     *r = wc - 0xfec0;
   63:     return 1;
   64:   }
   65:   return RET_ILUNI;
   66: }