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Annotation of embedaddon/libiconv/lib/gb12345.h, revision 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: }