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71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
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/*
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* Copyright (C) 1999-2001 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 Library General Public
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* License as published by the Free Software Foundation; either version 2
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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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with the GNU LIBICONV Library; see the file COPYING.LIB.
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* If not, write to the Free Software Foundation, Inc., 51 Franklin Street,
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* Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/*
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* BIG-5
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*/
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static int
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ces_big5_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
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{
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unsigned char c = *s;
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/* Code set 0 (ASCII) */
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if (c < 0x80)
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return ascii_mbtowc(conv,pwc,s,n);
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/* Code set 1 (BIG5) */
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if (c >= 0xa1 && c < 0xff) {
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if (n < 2)
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return RET_TOOFEW(0);
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{
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unsigned char c2 = s[1];
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if ((c2 >= 0x40 && c2 < 0x7f) || (c2 >= 0xa1 && c2 < 0xff))
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return big5_mbtowc(conv,pwc,s,2);
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else
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return RET_ILSEQ;
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}
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}
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return RET_ILSEQ;
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}
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static int
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ces_big5_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
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{
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unsigned char buf[2];
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int ret;
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/* Code set 0 (ASCII) */
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ret = ascii_wctomb(conv,r,wc,n);
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if (ret != RET_ILUNI)
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return ret;
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/* Code set 1 (BIG5) */
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ret = big5_wctomb(conv,buf,wc,2);
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if (ret != RET_ILUNI) {
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if (ret != 2) abort();
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if (n < 2)
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return RET_TOOSMALL;
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r[0] = buf[0];
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r[1] = buf[1];
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return 2;
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}
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return RET_ILUNI;
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}
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