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libiconv 1.16

    1: /*
    2:  * Copyright (C) 1999-2001, 2007, 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:  * EUC-KR
   22:  */
   23: 
   24: /* Specification: RFC 1557 */
   25: 
   26: static int
   27: euc_kr_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
   28: {
   29:   unsigned char c = *s;
   30:   /* Code set 0 (ASCII or KS C 5636-1993) */
   31:   if (c < 0x80)
   32:     return ascii_mbtowc(conv,pwc,s,n);
   33:   /* Code set 1 (KS C 5601-1992, now KS X 1001:2002) */
   34:   if (c >= 0xa1 && c < 0xff) {
   35:     if (n < 2)
   36:       return RET_TOOFEW(0);
   37:     {
   38:       unsigned char c2 = s[1];
   39:       if (c2 >= 0xa1 && c2 < 0xff) {
   40:         unsigned char buf[2];
   41:         buf[0] = c-0x80; buf[1] = c2-0x80;
   42:         return ksc5601_mbtowc(conv,pwc,buf,2);
   43:       } else
   44:         return RET_ILSEQ;
   45:     }
   46:   }
   47:   return RET_ILSEQ;
   48: }
   49: 
   50: static int
   51: euc_kr_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
   52: {
   53:   unsigned char buf[2];
   54:   int ret;
   55: 
   56:   /* Code set 0 (ASCII or KS C 5636-1993) */
   57:   ret = ascii_wctomb(conv,r,wc,n);
   58:   if (ret != RET_ILUNI)
   59:     return ret;
   60: 
   61:   /* Code set 1 (KS C 5601-1992, now KS X 1001:2002) */
   62:   ret = ksc5601_wctomb(conv,buf,wc,2);
   63:   if (ret != RET_ILUNI) {
   64:     if (ret != 2) abort();
   65:     if (n < 2)
   66:       return RET_TOOSMALL;
   67:     r[0] = buf[0]+0x80;
   68:     r[1] = buf[1]+0x80;
   69:     return 2;
   70:   }
   71: 
   72:   return RET_ILUNI;
   73: }