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 * ISO646-CN 23 * also known as GB_1988-80 24 */ 25 26 static int 27 iso646_cn_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) 28 { 29 unsigned char c = *s; 30 if (c < 0x80) { 31 if (c == 0x24) 32 *pwc = (ucs4_t) 0x00a5; 33 else if (c == 0x7e) 34 *pwc = (ucs4_t) 0x203e; 35 else 36 *pwc = (ucs4_t) c; 37 return 1; 38 } 39 return RET_ILSEQ; 40 } 41 42 static int 43 iso646_cn_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) 44 { 45 if (wc < 0x0080 && !(wc == 0x0024 || wc == 0x007e)) { 46 *r = wc; 47 return 1; 48 } 49 if (wc == 0x00a5) { 50 *r = 0x24; 51 return 1; 52 } 53 if (wc == 0x203e) { 54 *r = 0x7e; 55 return 1; 56 } 57 return RET_ILUNI; 58 } 59