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Annotation of embedaddon/libiconv/lib/cns11643_4.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:  * CNS 11643-1992 plane 4
                     22:  */
                     23: 
                     24: /*
                     25:  * The table has been split into two parts. Each part's entries fit it 16 bits.
                     26:  * But the combined table would need 17 bits per entry.
                     27:  */
                     28: #include "cns11643_4a.h"
                     29: #include "cns11643_4b.h"
                     30: 
                     31: static int
1.1.1.2 ! misho      32: cns11643_4_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
1.1       misho      33: {
                     34:   unsigned char c1 = s[0];
                     35:   if ((c1 >= 0x21 && c1 <= 0x6e)) {
                     36:     if (n >= 2) {
                     37:       unsigned char c2 = s[1];
                     38:       if (c2 >= 0x21 && c2 < 0x7f) {
                     39:         unsigned int i = 94 * (c1 - 0x21) + (c2 - 0x21);
                     40:         ucs4_t wc = 0xfffd;
                     41:         unsigned short swc;
                     42:         {
                     43:           if (i < 2914)
                     44:             swc = cns11643_4a_2uni_page21[i],
                     45:             wc = cns11643_4a_2uni_upages[swc>>8] | (swc & 0xff);
                     46:           else if (i < 7298)
                     47:             swc = cns11643_4b_2uni_page40[i-2914],
                     48:             wc = cns11643_4b_2uni_upages[swc>>8] | (swc & 0xff);
                     49:         }
                     50:         if (wc != 0xfffd) {
                     51:           *pwc = wc;
                     52:           return 2;
                     53:         }
                     54:       }
                     55:       return RET_ILSEQ;
                     56:     }
                     57:     return RET_TOOFEW(0);
                     58:   }
                     59:   return RET_ILSEQ;
                     60: }