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 } 68