2 * Copyright (c) 2003, 2005 Ryuichiro Imura
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: head/sys/libkern/iconv_xlat16.c 194638 2009-06-22 17:09:46Z delphij $
29 #include <sys/param.h>
30 #include <sys/kernel.h>
31 #include <sys/systm.h>
32 #include <sys/malloc.h>
33 #include <sys/iconv.h>
35 #include "iconv_converter_if.h"
42 MODULE_DEPEND(iconv_xlat16, libiconv, 2, 2, 2);
45 #define C2I1(c) ((c) & 0x8000 ? ((c) & 0xff) | 0x100 : (c) & 0xff)
46 #define C2I2(c) ((c) & 0x8000 ? ((c) >> 8) & 0x7f : ((c) >> 8) & 0xff)
49 * XLAT16 converter instance
53 uint32_t * d_table[0x200];
56 struct iconv_cspair * d_csp;
60 iconv_xlat16_open(struct iconv_converter_class *dcp,
61 struct iconv_cspair *csp, struct iconv_cspair *cspf, void **dpp)
63 struct iconv_xlat16 *dp;
64 uint32_t *headp, **idxp;
67 dp = (struct iconv_xlat16 *)kobj_create((struct kobj_class*)dcp, M_ICONV, M_WAITOK);
68 headp = (uint32_t *)((caddr_t)csp->cp_data + sizeof(dp->d_table));
69 idxp = (uint32_t **)csp->cp_data;
70 for (i = 0 ; i < 0x200 ; i++) {
72 dp->d_table[i] = headp;
75 dp->d_table[i] = NULL;
80 if (strcmp(csp->cp_to, KICONV_WCTYPE_NAME) != 0) {
81 if (iconv_open(KICONV_WCTYPE_NAME, csp->cp_from, &dp->f_ctp) != 0)
83 if (iconv_open(KICONV_WCTYPE_NAME, csp->cp_to, &dp->t_ctp) != 0)
86 dp->f_ctp = dp->t_ctp = dp;
96 iconv_xlat16_close(void *data)
98 struct iconv_xlat16 *dp = data;
100 if (dp->f_ctp && dp->f_ctp != data)
101 iconv_close(dp->f_ctp);
102 if (dp->t_ctp && dp->t_ctp != data)
103 iconv_close(dp->t_ctp);
104 dp->d_csp->cp_refcount--;
105 kobj_delete((struct kobj*)data, M_ICONV);
110 iconv_xlat16_conv(void *d2p, const char **inbuf,
111 size_t *inbytesleft, char **outbuf, size_t *outbytesleft,
112 int convchar, int casetype)
114 struct iconv_xlat16 *dp = (struct iconv_xlat16*)d2p;
118 size_t in, on, ir, or, inlen;
121 uint16_t c1, c2, ctmp;
123 if (inbuf == NULL || *inbuf == NULL || outbuf == NULL || *outbuf == NULL)
125 ir = in = *inbytesleft;
126 or = on = *outbytesleft;
130 while(ir > 0 && or > 0) {
135 c1 = ir > 1 ? *(src+1) & 0xff : 0;
139 c1 = c2 & 0x80 ? c1 | 0x100 : c1;
140 c2 = c2 & 0x80 ? c2 & 0x7f : c2;
142 if (ir > 1 && dp->d_table[c1] && dp->d_table[c1][c2]) {
144 * inbuf char is a double byte char
148 /* toupper,tolower */
149 if (casetype == KICONV_FROM_LOWER && dp->f_ctp)
150 ctmp = towlower(((u_char)*src << 8) | (u_char)*(src + 1),
152 else if (casetype == KICONV_FROM_UPPER && dp->f_ctp)
153 ctmp = towupper(((u_char)*src << 8) | (u_char)*(src + 1),
163 if (!dp->d_table[c1]) {
168 * inbuf char is a single byte char
172 if (casetype & (KICONV_FROM_LOWER|KICONV_FROM_UPPER))
173 code = dp->d_table[c1][c2];
175 if (casetype == KICONV_FROM_LOWER) {
177 ctmp = towlower((u_char)*src, dp->f_ctp);
178 else if (code & XLAT16_HAS_FROM_LOWER_CASE)
179 ctmp = (u_char)(code >> 16);
180 } else if (casetype == KICONV_FROM_UPPER) {
182 ctmp = towupper((u_char)*src, dp->f_ctp);
183 else if (code & XLAT16_HAS_FROM_UPPER_CASE)
184 ctmp = (u_char)(code >> 16);
187 c1 = C2I1(ctmp << 8);
188 c2 = C2I2(ctmp << 8);
192 code = dp->d_table[c1][c2];
198 nullin = (code & XLAT16_ACCEPT_NULL_IN) ? 1 : 0;
199 if (inlen == 1 && nullin) {
201 * XLAT16_ACCEPT_NULL_IN requires inbuf has 2byte
208 * now start translation
210 u = (u_char)(code >> 8);
213 #ifdef XLAT16_ACCEPT_3BYTE_CHR
214 if (code & XLAT16_IS_3BYTE_CHR) {
221 *dst++ = (u_char)(code >> 16);
225 if (u || code & XLAT16_ACCEPT_NULL_OUT) {
231 /* toupper,tolower */
232 if (casetype == KICONV_LOWER && dp->t_ctp) {
233 code = towlower((uint16_t)code, dp->t_ctp);
234 u = (u_char)(code >> 8);
237 if (casetype == KICONV_UPPER && dp->t_ctp) {
238 code = towupper((uint16_t)code, dp->t_ctp);
239 u = (u_char)(code >> 8);
247 /* toupper,tolower */
248 if (casetype == KICONV_LOWER) {
250 l = (u_char)towlower(l, dp->t_ctp);
251 else if (code & XLAT16_HAS_LOWER_CASE)
252 l = (u_char)(code >> 16);
254 if (casetype == KICONV_UPPER) {
256 l = (u_char)towupper(l, dp->t_ctp);
257 else if (code & XLAT16_HAS_UPPER_CASE)
258 l = (u_char)(code >> 16);
267 * there is a case that inbuf char is a single
268 * byte char while inlen == 2
270 if ((u_char)*(src+1) == 0 && !nullin ) {
288 *inbytesleft -= in - ir;
289 *outbytesleft -= on - or;
294 iconv_xlat16_name(struct iconv_converter_class *dcp)
300 iconv_xlat16_tolower(void *d2p, int c)
302 struct iconv_xlat16 *dp = (struct iconv_xlat16*)d2p;
308 } else if (c < 0x10000) {
314 if (dp->d_table[c1] && dp->d_table[c1][c2] & XLAT16_HAS_LOWER_CASE) {
315 /*return (int)(dp->d_table[c1][c2] & 0xffff);*/
316 out = dp->d_table[c1][c2] & 0xffff;
317 if ((out & 0xff) == 0)
318 out = (out >> 8) & 0xff;
325 iconv_xlat16_toupper(void *d2p, int c)
327 struct iconv_xlat16 *dp = (struct iconv_xlat16*)d2p;
333 } else if (c < 0x10000) {
339 if (dp->d_table[c1] && dp->d_table[c1][c2] & XLAT16_HAS_UPPER_CASE) {
340 out = dp->d_table[c1][c2] & 0xffff;
341 if ((out & 0xff) == 0)
342 out = (out >> 8) & 0xff;
348 static kobj_method_t iconv_xlat16_methods[] = {
349 KOBJMETHOD(iconv_converter_open, iconv_xlat16_open),
350 KOBJMETHOD(iconv_converter_close, iconv_xlat16_close),
351 KOBJMETHOD(iconv_converter_conv, iconv_xlat16_conv),
353 KOBJMETHOD(iconv_converter_init, iconv_xlat16_init),
354 KOBJMETHOD(iconv_converter_done, iconv_xlat16_done),
356 KOBJMETHOD(iconv_converter_name, iconv_xlat16_name),
357 KOBJMETHOD(iconv_converter_tolower, iconv_xlat16_tolower),
358 KOBJMETHOD(iconv_converter_toupper, iconv_xlat16_toupper),
362 KICONV_CONVERTER(xlat16, sizeof(struct iconv_xlat16));