2 * Copyright (C) 1999-2001, 2008, 2016 Free Software Foundation, Inc.
3 * This file is part of the GNU LIBICONV Library.
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.
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.
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, see <http://www.gnu.org/licenses/>.
24 /* Specification: RFC 1468 */
29 * The state can be one of the following values.
32 #define STATE_JISX0201ROMAN 1
33 #define STATE_JISX0208 2
36 iso2022_jp_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
38 state_t state = conv->istate;
55 state = STATE_JISX0201ROMAN;
64 if (s[2] == '@' || s[2] == 'B') {
65 /* We don't distinguish JIS X 0208-1978 and JIS X 0208-1983. */
66 state = STATE_JISX0208;
81 int ret = ascii_mbtowc(conv,pwc,s,1);
84 if (ret != 1) abort();
89 case STATE_JISX0201ROMAN:
91 int ret = jisx0201_mbtowc(conv,pwc,s,1);
94 if (ret != 1) abort();
102 if (s[0] < 0x80 && s[1] < 0x80) {
103 int ret = jisx0208_mbtowc(conv,pwc,s,2);
104 if (ret == RET_ILSEQ)
106 if (ret != 2) abort();
107 conv->istate = state;
115 conv->istate = state;
116 return RET_TOOFEW(count);
119 conv->istate = state;
120 return RET_SHIFT_ILSEQ(count);
124 iso2022_jp_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
126 state_t state = conv->ostate;
127 unsigned char buf[2];
131 ret = ascii_wctomb(conv,buf,wc,1);
132 if (ret != RET_ILUNI) {
133 if (ret != 1) abort();
135 int count = (state == STATE_ASCII ? 1 : 4);
138 if (state != STATE_ASCII) {
146 conv->ostate = state;
151 /* Try JIS X 0201-1976 Roman. */
152 ret = jisx0201_wctomb(conv,buf,wc,1);
153 if (ret != RET_ILUNI) {
154 if (ret != 1) abort();
156 int count = (state == STATE_JISX0201ROMAN ? 1 : 4);
159 if (state != STATE_JISX0201ROMAN) {
164 state = STATE_JISX0201ROMAN;
167 conv->ostate = state;
172 /* Try JIS X 0208-1990 in place of JIS X 0208-1978 and JIS X 0208-1983. */
173 ret = jisx0208_wctomb(conv,buf,wc,2);
174 if (ret != RET_ILUNI) {
175 if (ret != 2) abort();
176 if (buf[0] < 0x80 && buf[1] < 0x80) {
177 int count = (state == STATE_JISX0208 ? 2 : 5);
180 if (state != STATE_JISX0208) {
185 state = STATE_JISX0208;
189 conv->ostate = state;
198 iso2022_jp_reset (conv_t conv, unsigned char *r, size_t n)
200 state_t state = conv->ostate;
201 if (state != STATE_ASCII) {
207 /* conv->ostate = 0; will be done by the caller */
213 #undef STATE_JISX0208
214 #undef STATE_JISX0201ROMAN