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Annotation of embedaddon/libiconv/lib/ces_big5.h, revision 1.1.1.2

1.1       misho       1: /*
1.1.1.2 ! misho       2:  * Copyright (C) 1999-2001, 2016 Free Software Foundation, Inc.
1.1       misho       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.
1.1.1.2 ! misho      17:  * If not, see <https://www.gnu.org/licenses/>.
1.1       misho      18:  */
                     19: 
                     20: /*
                     21:  * BIG-5
                     22:  */
                     23: 
                     24: static int
1.1.1.2 ! misho      25: ces_big5_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
1.1       misho      26: {
                     27:   unsigned char c = *s;
                     28:   /* Code set 0 (ASCII) */
                     29:   if (c < 0x80)
                     30:     return ascii_mbtowc(conv,pwc,s,n);
                     31:   /* Code set 1 (BIG5) */
                     32:   if (c >= 0xa1 && c < 0xff) {
                     33:     if (n < 2)
                     34:       return RET_TOOFEW(0);
                     35:     {
                     36:       unsigned char c2 = s[1];
                     37:       if ((c2 >= 0x40 && c2 < 0x7f) || (c2 >= 0xa1 && c2 < 0xff))
                     38:         return big5_mbtowc(conv,pwc,s,2);
                     39:       else
                     40:         return RET_ILSEQ;
                     41:     }
                     42:   }
                     43:   return RET_ILSEQ;
                     44: }
                     45: 
                     46: static int
1.1.1.2 ! misho      47: ces_big5_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
1.1       misho      48: {
                     49:   unsigned char buf[2];
                     50:   int ret;
                     51: 
                     52:   /* Code set 0 (ASCII) */
                     53:   ret = ascii_wctomb(conv,r,wc,n);
                     54:   if (ret != RET_ILUNI)
                     55:     return ret;
                     56: 
                     57:   /* Code set 1 (BIG5) */
                     58:   ret = big5_wctomb(conv,buf,wc,2);
                     59:   if (ret != RET_ILUNI) {
                     60:     if (ret != 2) abort();
                     61:     if (n < 2)
                     62:       return RET_TOOSMALL;
                     63:     r[0] = buf[0];
                     64:     r[1] = buf[1];
                     65:     return 2;
                     66:   }
                     67: 
                     68:   return RET_ILUNI;
                     69: }