2 * Copyright (c) 2003 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: src/lib/libkiconv/xlat16_iconv.c,v 1.4.8.1 2009/04/15 03:14:26 kensmith Exp $
30 * kiconv(3) requires shared linked, and reduce module size
31 * when statically linked.
33 #include <sys/types.h>
34 #include <sys/iconv.h>
35 #include <sys/sysctl.h>
49 uint32_t * idx[0x200];
54 static struct xlat16_table kiconv_xlat16_open(const char *, const char *, int);
56 static int my_iconv_init(void);
57 static iconv_t (*my_iconv_open)(const char *, const char *);
58 static size_t (*my_iconv)(iconv_t, char **, size_t *, char **, size_t *);
59 static int (*my_iconv_close)(iconv_t);
60 static size_t my_iconv_char(iconv_t, const u_char **, size_t *, u_char **, size_t *);
63 kiconv_add_xlat16_cspair(const char *tocode, const char *fromcode, int flag)
66 size_t i, size, idxsize;
67 struct iconv_cspair_info *csi;
68 struct xlat16_table xt;
71 if (sysctlbyname("kern.iconv.cslist", NULL, &size, NULL, 0) == -1)
77 if (sysctlbyname("kern.iconv.cslist", csi, &size, NULL, 0) == -1) {
81 for (i = 0; i < (size/sizeof(*csi)); i++, csi++){
82 if (strcmp(csi->cs_to, tocode) == 0 &&
83 strcmp(csi->cs_from, fromcode) == 0)
88 xt = kiconv_xlat16_open(tocode, fromcode, flag);
92 idxsize = sizeof(xt.idx);
94 if ((idxsize + xt.size) > ICONV_CSMAXDATALEN) {
99 if ((data = malloc(idxsize + xt.size)) != NULL) {
101 memcpy(p, xt.idx, idxsize);
103 memcpy(p, xt.data, xt.size);
104 error = kiconv_add_xlat16_table(tocode, fromcode, data,
105 (int)(idxsize + xt.size));
112 kiconv_add_xlat16_cspairs(const char *foreigncode, const char *localcode)
116 error = kiconv_add_xlat16_cspair(foreigncode, localcode,
117 KICONV_FROM_LOWER | KICONV_FROM_UPPER);
120 error = kiconv_add_xlat16_cspair(localcode, foreigncode,
121 KICONV_LOWER | KICONV_UPPER);
127 static struct xlat16_table
128 kiconv_xlat16_open(const char *tocode, const char *fromcode, int lcase)
130 u_char src[3], dst[4], *srcp, *dstp, ud, ld;
133 uint32_t table[0x80];
134 size_t inbytesleft, outbytesleft, pre_q_size, post_q_size;
135 struct xlat16_table xt;
136 struct quirk_replace_list *pre_q_list, *post_q_list;
145 ret = my_iconv_init();
148 cd = my_iconv_open(search_quirk(tocode, fromcode, &pre_q_list, &pre_q_size),
149 search_quirk(fromcode, tocode, &post_q_list, &post_q_size));
150 if (cd == (iconv_t) (-1))
153 if ((xt.data = malloc(0x200 * 0x80 * sizeof(uint32_t))) == NULL)
158 for (ls = 0 ; ls < 0x200 ; ls++) {
160 for (us = 0 ; us < 0x80 ; us++) {
166 bzero(dst, outbytesleft);
168 c = ((ls & 0x100 ? us | 0x80 : us) << 8) | (u_char)ls;
169 c = quirk_vendor2unix(c, pre_q_list, pre_q_size);
170 src[0] = (u_char)(c >> 8);
173 ret = my_iconv_char(cd, (const u_char **)&srcp,
174 &inbytesleft, &dstp, &outbytesleft);
183 switch(outbytesleft) {
185 #ifdef XLAT16_ACCEPT_3BYTE_CHR
186 table[us] = (ud << 8) | ld;
187 table[us] |= (u_char)dst[2] << 16;
188 table[us] |= XLAT16_IS_3BYTE_CHR;
195 table[us] = quirk_unix2vendor((ud << 8) | ld,
196 post_q_list, post_q_size);
197 if ((table[us] >> 8) == 0)
198 table[us] |= XLAT16_ACCEPT_NULL_OUT;
202 if (lcase & KICONV_LOWER && ud != tolower(ud)) {
203 table[us] |= (u_char)tolower(ud) << 16;
204 table[us] |= XLAT16_HAS_LOWER_CASE;
206 if (lcase & KICONV_UPPER && ud != toupper(ud)) {
207 table[us] |= (u_char)toupper(ud) << 16;
208 table[us] |= XLAT16_HAS_UPPER_CASE;
213 switch(inbytesleft) {
215 if ((ls & 0xff) == 0)
216 table[us] |= XLAT16_ACCEPT_NULL_IN;
219 c = ls > 0xff ? us | 0x80 : us;
220 if (lcase & KICONV_FROM_LOWER && c != tolower(c)) {
221 table[us] |= (u_char)tolower(c) << 16;
222 table[us] |= XLAT16_HAS_FROM_LOWER_CASE;
224 if (lcase & KICONV_FROM_UPPER && c != toupper(c)) {
225 table[us] |= (u_char)toupper(c) << 16;
226 table[us] |= XLAT16_HAS_FROM_UPPER_CASE;
240 memcpy(p, table, sizeof(table));
246 xt.size = p - (char *)xt.data;
247 xt.data = realloc(xt.data, xt.size);
257 iconv_lib = dlopen("libc.so", RTLD_LAZY | RTLD_GLOBAL);
258 if (iconv_lib == NULL) {
259 warn("Unable to load iconv library: %s\n", dlerror());
263 my_iconv_open = dlsym(iconv_lib, "iconv_open");
264 my_iconv = dlsym(iconv_lib, "iconv");
265 my_iconv_close = dlsym(iconv_lib, "iconv_close");
267 my_iconv_open = iconv_open;
269 my_iconv_close = iconv_close;
276 my_iconv_char(iconv_t cd, const u_char **ibuf, size_t * ilen, u_char **obuf,
280 u_char *dp, ilocal[3], olocal[3];
290 ret = my_iconv(cd, (char **)&sp, ilen, (char **)&dp, olen);
295 if (*ilen == ir - 1 && (*ibuf)[1] == '\0' && (c1 || c2))
302 * We must judge if inbuf is a single byte char or double byte char.
303 * Here, to judge, try first byte(*sp) conversion and compare.
309 memcpy(ilocal, *ibuf, sizeof(ilocal));
313 if ((my_iconv(cd, (char **)&sp, &ir, (char **)&dp, &or)) != (size_t)-1) {
317 if (olocal[1] == c2 && (*ibuf)[1] == '\0') {
319 * inbuf is a single byte char
329 if (olocal[1] == c2) {
331 * inbuf is a single byte char,
332 * so return false here.
337 * inbuf is a double byte char
344 * should compare second byte of inbuf
350 * inbuf clould not be splitted, so inbuf is
351 * a double byte char.
357 * try second byte(*(sp+1)) conversion, and compare
367 if ((my_iconv(cd, (char **)&sp, &ir, (char **)&dp, &or)) != (size_t)-1) {
370 * inbuf is a single byte char