67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
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/*
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* Copyright (C) 1999-2001, 2016 Free Software Foundation, Inc.
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* This file is part of the GNU LIBICONV Library.
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*
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* The GNU LIBICONV Library is free software; you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* The GNU LIBICONV Library is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with the GNU LIBICONV Library; see the file COPYING.LIB.
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* If not, see <https://www.gnu.org/licenses/>.
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*/
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/*
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* GB/T 12345-1990
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*/
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/*
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* GB/T 12345-1990 is a traditional chinese counterpart of GB 2312-1986.
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* According to the unicode.org tables:
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* 2146 characters have been changed to their traditional counterpart,
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* 103 characters have been added, no characters have been removed.
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* Therefore we use an auxiliary table, which contains only the changes.
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*/
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#include "gb12345ext.h"
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static int
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gb12345_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
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{
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int ret;
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/* The gb12345ext table overrides some entries in the gb2312 table. */
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/* Try the GB12345 extensions -> Unicode table. */
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ret = gb12345ext_mbtowc(conv,pwc,s,n);
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if (ret != RET_ILSEQ)
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return ret;
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/* Try the GB2312 -> Unicode table. */
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ret = gb2312_mbtowc(conv,pwc,s,n);
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return ret;
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}
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static int
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gb12345_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
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{
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int ret;
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/* The gb12345ext table overrides some entries in the gb2312 table. */
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/* Try the Unicode -> GB12345 extensions table. */
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ret = gb12345ext_wctomb(conv,r,wc,n);
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if (ret != RET_ILUNI)
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return ret;
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/* Try the Unicode -> GB2312 table, and check that the resulting GB2312
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byte sequence is not overridden by the GB12345 extensions table. */
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ret = gb2312_wctomb(conv,r,wc,n);
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if (ret == 2 && gb12345ext_mbtowc(conv,&wc,r,2) == 2)
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return RET_ILUNI;
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else
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return ret;
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}
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