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Annotation of embedaddon/libiconv/lib/gb12345.h, revision 1.1.1.1

1.1       misho       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:  * GB/T 12345-1990
                     23:  */
                     24: 
                     25: /*
                     26:  * GB/T 12345-1990 is a traditional chinese counterpart of GB 2312-1986.
                     27:  * According to the unicode.org tables:
                     28:  * 2146 characters have been changed to their traditional counterpart,
                     29:  * 103 characters have been added, no characters have been removed.
                     30:  * Therefore we use an auxiliary table, which contains only the changes.
                     31:  */
                     32: 
                     33: #include "gb12345ext.h"
                     34: 
                     35: static int
                     36: gb12345_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
                     37: {
                     38:   int ret;
                     39: 
                     40:   /* The gb12345ext table overrides some entries in the gb2312 table. */
                     41:   /* Try the GB12345 extensions -> Unicode table. */
                     42:   ret = gb12345ext_mbtowc(conv,pwc,s,n);
                     43:   if (ret != RET_ILSEQ)
                     44:     return ret;
                     45:   /* Try the GB2312 -> Unicode table. */
                     46:   ret = gb2312_mbtowc(conv,pwc,s,n);
                     47:   return ret;
                     48: }
                     49: 
                     50: static int
                     51: gb12345_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
                     52: {
                     53:   int ret;
                     54: 
                     55:   /* The gb12345ext table overrides some entries in the gb2312 table. */
                     56:   /* Try the Unicode -> GB12345 extensions table. */
                     57:   ret = gb12345ext_wctomb(conv,r,wc,n);
                     58:   if (ret != RET_ILUNI)
                     59:     return ret;
                     60:   /* Try the Unicode -> GB2312 table, and check that the resulting GB2312
                     61:      byte sequence is not overridden by the GB12345 extensions table. */
                     62:   ret = gb2312_wctomb(conv,r,wc,n);
                     63:   if (ret == 2 && gb12345ext_mbtowc(conv,&wc,r,2) == 2)
                     64:     return RET_ILUNI;
                     65:   else
                     66:     return ret;
                     67: }