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 * CNS 11643-1992 plane 4 23 */ 24 25 /* 26 * The table has been split into two parts. Each part's entries fit it 16 bits. 27 * But the combined table would need 17 bits per entry. 28 */ 29 #include "cns11643_4a.h" 30 #include "cns11643_4b.h" 31 32 static int 33 cns11643_4_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) 34 { 35 unsigned char c1 = s[0]; 36 if ((c1 >= 0x21 && c1 <= 0x6e)) { 37 if (n >= 2) { 38 unsigned char c2 = s[1]; 39 if (c2 >= 0x21 && c2 < 0x7f) { 40 unsigned int i = 94 * (c1 - 0x21) + (c2 - 0x21); 41 ucs4_t wc = 0xfffd; 42 unsigned short swc; 43 { 44 if (i < 2914) 45 swc = cns11643_4a_2uni_page21[i], 46 wc = cns11643_4a_2uni_upages[swc>>8] | (swc & 0xff); 47 else if (i < 7298) 48 swc = cns11643_4b_2uni_page40[i-2914], 49 wc = cns11643_4b_2uni_upages[swc>>8] | (swc & 0xff); 50 } 51 if (wc != 0xfffd) { 52 *pwc = wc; 53 return 2; 54 } 55 } 56 return RET_ILSEQ; 57 } 58 return RET_TOOFEW(0); 59 } 60 return RET_ILSEQ; 61 } 62