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114 lines
3.1 KiB
114 lines
3.1 KiB
/* |
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* Copyright (C) 2001, 2005, 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 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, see <http://www.gnu.org/licenses/>. |
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*/ |
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/* |
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* DEC-HANYU |
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*/ |
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static int |
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dec_hanyu_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t 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 (CNS 11643-1992 Plane 1), |
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Code set 2 (CNS 11643-1992 Plane 2), |
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Code set 3 (CNS 11643-1992 Plane 3) */ |
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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 (c == 0xc2 && c2 == 0xcb) { |
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if (n < 4) |
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return RET_TOOFEW(0); |
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if (s[2] >= 0xa1 && s[2] < 0xff && s[3] >= 0xa1 && s[3] < 0xff) { |
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unsigned char buf[2]; |
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int ret; |
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buf[0] = s[2]-0x80; buf[1] = s[3]-0x80; |
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ret = cns11643_3_mbtowc(conv,pwc,buf,2); |
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if (ret != RET_ILSEQ) { |
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if (ret != 2) abort(); |
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return 4; |
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} |
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} |
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} else if (c2 >= 0xa1 && c2 < 0xff) { |
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if (c != 0xc2 || c2 < 0xc2) { |
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unsigned char buf[2]; |
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buf[0] = c-0x80; buf[1] = c2-0x80; |
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return cns11643_1_mbtowc(conv,pwc,buf,2); |
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} |
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} else if (c2 >= 0x21 && c2 < 0x7f) { |
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unsigned char buf[2]; |
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buf[0] = c-0x80; buf[1] = c2; |
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return cns11643_2_mbtowc(conv,pwc,buf,2); |
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} |
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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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dec_hanyu_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n) |
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{ |
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unsigned char buf[3]; |
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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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ret = cns11643_wctomb(conv,buf,wc,3); |
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if (ret != RET_ILUNI) { |
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if (ret != 3) abort(); |
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/* Code set 1 (CNS 11643-1992 Plane 1) */ |
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if (buf[0] == 1 && (buf[1] != 0x42 || buf[2] < 0x42)) { |
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if (n < 2) |
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return RET_TOOSMALL; |
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r[0] = buf[1]+0x80; |
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r[1] = buf[2]+0x80; |
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return 2; |
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} |
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/* Code set 2 (CNS 11643-1992 Plane 2) */ |
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if (buf[0] == 2) { |
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if (n < 2) |
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return RET_TOOSMALL; |
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r[0] = buf[1]+0x80; |
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r[1] = buf[2]; |
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return 2; |
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} |
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/* Code set 3 (CNS 11643-1992 Plane 3) */ |
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if (buf[0] == 3) { |
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if (n < 4) |
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return RET_TOOSMALL; |
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r[0] = 0xc2; |
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r[1] = 0xcb; |
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r[2] = buf[1]+0x80; |
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r[3] = buf[2]+0x80; |
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return 4; |
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} |
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} |
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return RET_ILUNI; |
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}
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