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-JP 23 * also known as JIS_C6220-1969-RO 24 */ 25 26 /* This is the lower half of JIS_X0201. */ 27 28 static int 29 iso646_jp_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) 30 { 31 unsigned char c = *s; 32 if (c < 0x80) { 33 if (c == 0x5c) 34 *pwc = (ucs4_t) 0x00a5; 35 else if (c == 0x7e) 36 *pwc = (ucs4_t) 0x203e; 37 else 38 *pwc = (ucs4_t) c; 39 return 1; 40 } 41 return RET_ILSEQ; 42 } 43 44 static int 45 iso646_jp_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) 46 { 47 if (wc < 0x0080 && !(wc == 0x005c || wc == 0x007e)) { 48 *r = wc; 49 return 1; 50 } 51 if (wc == 0x00a5) { 52 *r = 0x5c; 53 return 1; 54 } 55 if (wc == 0x203e) { 56 *r = 0x7e; 57 return 1; 58 } 59 return RET_ILUNI; 60 } 61