2 /* $NetBSD: citrus_iconv_std.c,v 1.15 2006/11/13 19:08:19 tnozaki Exp $ */
5 * Copyright (c)2003 Citrus Project,
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 #include <sys/endian.h>
32 #include <sys/queue.h>
42 #include "citrus_namespace.h"
43 #include "citrus_types.h"
44 #include "citrus_module.h"
45 #include "citrus_region.h"
46 #include "citrus_mmap.h"
47 #include "citrus_hash.h"
48 #include "citrus_iconv.h"
49 #include "citrus_stdenc.h"
50 #include "citrus_mapper.h"
51 #include "citrus_csmapper.h"
52 #include "citrus_memstream.h"
53 #include "citrus_iconv_std.h"
54 #include "citrus_esdb.h"
56 /* ---------------------------------------------------------------------- */
58 _CITRUS_ICONV_DECLS(iconv_std);
59 _CITRUS_ICONV_DEF_OPS(iconv_std);
62 /* ---------------------------------------------------------------------- */
65 _citrus_iconv_std_iconv_getops(struct _citrus_iconv_ops *ops)
68 memcpy(ops, &_citrus_iconv_std_iconv_ops,
69 sizeof(_citrus_iconv_std_iconv_ops));
74 /* ---------------------------------------------------------------------- */
77 * convenience routines for stdenc.
80 save_encoding_state(struct _citrus_iconv_std_encoding *se)
84 memcpy(se->se_pssaved, se->se_ps,
85 _stdenc_get_state_size(se->se_handle));
89 restore_encoding_state(struct _citrus_iconv_std_encoding *se)
93 memcpy(se->se_ps, se->se_pssaved,
94 _stdenc_get_state_size(se->se_handle));
98 init_encoding_state(struct _citrus_iconv_std_encoding *se)
102 _stdenc_init_state(se->se_handle, se->se_ps);
106 mbtocsx(struct _citrus_iconv_std_encoding *se,
107 _csid_t *csid, _index_t *idx, char **s, size_t n, size_t *nresult,
108 struct iconv_hooks *hooks)
111 return (_stdenc_mbtocs(se->se_handle, csid, idx, s, n, se->se_ps,
116 cstombx(struct _citrus_iconv_std_encoding *se,
117 char *s, size_t n, _csid_t csid, _index_t idx, size_t *nresult,
118 struct iconv_hooks *hooks)
121 return (_stdenc_cstomb(se->se_handle, s, n, csid, idx, se->se_ps,
126 wctombx(struct _citrus_iconv_std_encoding *se,
127 char *s, size_t n, _wc_t wc, size_t *nresult,
128 struct iconv_hooks *hooks)
131 return (_stdenc_wctomb(se->se_handle, s, n, wc, se->se_ps, nresult,
136 put_state_resetx(struct _citrus_iconv_std_encoding *se, char *s, size_t n,
140 return (_stdenc_put_state_reset(se->se_handle, s, n, se->se_ps, nresult));
144 get_state_desc_gen(struct _citrus_iconv_std_encoding *se, int *rstate)
146 struct _stdenc_state_desc ssd;
149 ret = _stdenc_get_state_desc(se->se_handle, se->se_ps,
150 _STDENC_SDID_GENERIC, &ssd);
152 *rstate = ssd.u.generic.state;
158 * init encoding context
161 init_encoding(struct _citrus_iconv_std_encoding *se, struct _stdenc *cs,
162 void *ps1, void *ps2)
168 se->se_pssaved = ps2;
171 ret = _stdenc_init_state(cs, se->se_ps);
172 if (!ret && se->se_pssaved)
173 ret = _stdenc_init_state(cs, se->se_pssaved);
179 open_csmapper(struct _csmapper **rcm, const char *src, const char *dst,
180 unsigned long *rnorm)
182 struct _csmapper *cm;
185 ret = _csmapper_open(&cm, src, dst, 0, rnorm);
188 if (_csmapper_get_src_max(cm) != 1 || _csmapper_get_dst_max(cm) != 1 ||
189 _csmapper_get_state_size(cm) != 0) {
200 close_dsts(struct _citrus_iconv_std_dst_list *dl)
202 struct _citrus_iconv_std_dst *sd;
204 while ((sd = TAILQ_FIRST(dl)) != NULL) {
205 TAILQ_REMOVE(dl, sd, sd_entry);
206 _csmapper_close(sd->sd_mapper);
212 open_dsts(struct _citrus_iconv_std_dst_list *dl,
213 const struct _esdb_charset *ec, const struct _esdb *dbdst)
215 struct _citrus_iconv_std_dst *sd, *sdtmp;
219 sd = malloc(sizeof(*sd));
223 for (i = 0; i < dbdst->db_num_charsets; i++) {
224 ret = open_csmapper(&sd->sd_mapper, ec->ec_csname,
225 dbdst->db_charsets[i].ec_csname, &norm);
227 sd->sd_csid = dbdst->db_charsets[i].ec_csid;
229 /* insert this mapper by sorted order. */
230 TAILQ_FOREACH(sdtmp, dl, sd_entry) {
231 if (sdtmp->sd_norm > norm) {
232 TAILQ_INSERT_BEFORE(sdtmp, sd,
239 TAILQ_INSERT_TAIL(dl, sd, sd_entry);
240 sd = malloc(sizeof(*sd));
246 } else if (ret != ENOENT) {
257 close_srcs(struct _citrus_iconv_std_src_list *sl)
259 struct _citrus_iconv_std_src *ss;
261 while ((ss = TAILQ_FIRST(sl)) != NULL) {
262 TAILQ_REMOVE(sl, ss, ss_entry);
263 close_dsts(&ss->ss_dsts);
269 open_srcs(struct _citrus_iconv_std_src_list *sl,
270 const struct _esdb *dbsrc, const struct _esdb *dbdst)
272 struct _citrus_iconv_std_src *ss;
273 int count = 0, i, ret;
275 ss = malloc(sizeof(*ss));
279 TAILQ_INIT(&ss->ss_dsts);
281 for (i = 0; i < dbsrc->db_num_charsets; i++) {
282 ret = open_dsts(&ss->ss_dsts, &dbsrc->db_charsets[i], dbdst);
285 if (!TAILQ_EMPTY(&ss->ss_dsts)) {
286 ss->ss_csid = dbsrc->db_charsets[i].ec_csid;
287 TAILQ_INSERT_TAIL(sl, ss, ss_entry);
288 ss = malloc(sizeof(*ss));
294 TAILQ_INIT(&ss->ss_dsts);
299 return (count ? 0 : ENOENT);
307 /* do convert a character */
308 #define E_NO_CORRESPONDING_CHAR ENOENT /* XXX */
311 do_conv(const struct _citrus_iconv_std_shared *is,
312 _csid_t *csid, _index_t *idx)
314 struct _citrus_iconv_std_dst *sd;
315 struct _citrus_iconv_std_src *ss;
319 TAILQ_FOREACH(ss, &is->is_srcs, ss_entry) {
320 if (ss->ss_csid == *csid) {
321 TAILQ_FOREACH(sd, &ss->ss_dsts, sd_entry) {
322 ret = _csmapper_convert(sd->sd_mapper,
323 &tmpidx, *idx, NULL);
325 case _MAPPER_CONVERT_SUCCESS:
329 case _MAPPER_CONVERT_NONIDENTICAL:
331 case _MAPPER_CONVERT_SRC_MORE:
333 case _MAPPER_CONVERT_DST_MORE:
335 case _MAPPER_CONVERT_ILSEQ:
337 case _MAPPER_CONVERT_FATAL:
345 return (E_NO_CORRESPONDING_CHAR);
347 /* ---------------------------------------------------------------------- */
351 _citrus_iconv_std_iconv_init_shared(struct _citrus_iconv_shared *ci,
352 const char * __restrict src, const char * __restrict dst)
354 struct _citrus_esdb esdbdst, esdbsrc;
355 struct _citrus_iconv_std_shared *is;
358 is = malloc(sizeof(*is));
363 ret = _citrus_esdb_open(&esdbsrc, src);
366 ret = _citrus_esdb_open(&esdbdst, dst);
369 ret = _stdenc_open(&is->is_src_encoding, esdbsrc.db_encname,
370 esdbsrc.db_variable, esdbsrc.db_len_variable);
373 ret = _stdenc_open(&is->is_dst_encoding, esdbdst.db_encname,
374 esdbdst.db_variable, esdbdst.db_len_variable);
377 is->is_use_invalid = esdbdst.db_use_invalid;
378 is->is_invalid = esdbdst.db_invalid;
380 TAILQ_INIT(&is->is_srcs);
381 ret = open_srcs(&is->is_srcs, &esdbsrc, &esdbdst);
385 _esdb_close(&esdbsrc);
386 _esdb_close(&esdbdst);
392 _stdenc_close(is->is_dst_encoding);
394 _stdenc_close(is->is_src_encoding);
396 _esdb_close(&esdbdst);
398 _esdb_close(&esdbsrc);
406 _citrus_iconv_std_iconv_uninit_shared(struct _citrus_iconv_shared *ci)
408 struct _citrus_iconv_std_shared *is = ci->ci_closure;
413 _stdenc_close(is->is_src_encoding);
414 _stdenc_close(is->is_dst_encoding);
415 close_srcs(&is->is_srcs);
420 _citrus_iconv_std_iconv_init_context(struct _citrus_iconv *cv)
422 const struct _citrus_iconv_std_shared *is = cv->cv_shared->ci_closure;
423 struct _citrus_iconv_std_context *sc;
425 size_t sz, szpsdst, szpssrc;
427 szpssrc = _stdenc_get_state_size(is->is_src_encoding);
428 szpsdst = _stdenc_get_state_size(is->is_dst_encoding);
430 sz = (szpssrc + szpsdst)*2 + sizeof(struct _citrus_iconv_std_context);
435 ptr = (char *)&sc[1];
437 init_encoding(&sc->sc_src_encoding, is->is_src_encoding,
440 init_encoding(&sc->sc_src_encoding, is->is_src_encoding,
444 init_encoding(&sc->sc_dst_encoding, is->is_dst_encoding,
447 init_encoding(&sc->sc_dst_encoding, is->is_dst_encoding,
450 cv->cv_closure = (void *)sc;
456 _citrus_iconv_std_iconv_uninit_context(struct _citrus_iconv *cv)
459 free(cv->cv_closure);
463 _citrus_iconv_std_iconv_convert(struct _citrus_iconv * __restrict cv,
464 char * __restrict * __restrict in, size_t * __restrict inbytes,
465 char * __restrict * __restrict out, size_t * __restrict outbytes,
466 uint32_t flags, size_t * __restrict invalids)
468 const struct _citrus_iconv_std_shared *is = cv->cv_shared->ci_closure;
469 struct _citrus_iconv_std_context *sc = cv->cv_closure;
473 size_t inval, szrin, szrout;
477 if (in == NULL || *in == NULL) {
479 if (out != NULL && *out != NULL) {
480 /* init output state and store the shift sequence */
481 save_encoding_state(&sc->sc_src_encoding);
482 save_encoding_state(&sc->sc_dst_encoding);
485 ret = put_state_resetx(&sc->sc_dst_encoding,
486 *out, *outbytes, &szrout);
490 if (szrout == (size_t)-2) {
491 /* too small to store the character */
498 /* otherwise, discard the shift sequence */
499 init_encoding_state(&sc->sc_dst_encoding);
500 init_encoding_state(&sc->sc_src_encoding);
508 ret = get_state_desc_gen(&sc->sc_src_encoding, &state);
509 if (state == _STDENC_SDGEN_INITIAL ||
510 state == _STDENC_SDGEN_STABLE)
514 /* save the encoding states for the error recovery */
515 save_encoding_state(&sc->sc_src_encoding);
516 save_encoding_state(&sc->sc_dst_encoding);
518 /* mb -> csid/index */
521 ret = mbtocsx(&sc->sc_src_encoding, &csid, &idx, &tmpin,
522 *inbytes, &szrin, cv->cv_shared->ci_hooks);
526 if (szrin == (size_t)-2) {
527 /* incompleted character */
528 ret = get_state_desc_gen(&sc->sc_src_encoding, &state);
534 case _STDENC_SDGEN_INITIAL:
535 case _STDENC_SDGEN_STABLE:
536 /* fetch shift sequences only. */
542 /* convert the character */
543 ret = do_conv(is, &csid, &idx);
545 if (ret == E_NO_CORRESPONDING_CHAR) {
548 if ((((flags & _CITRUS_ICONV_F_HIDE_INVALID) == 0) &&
549 !cv->cv_shared->ci_discard_ilseq) &&
550 is->is_use_invalid) {
551 ret = wctombx(&sc->sc_dst_encoding,
552 *out, *outbytes, is->is_invalid,
553 &szrout, cv->cv_shared->ci_hooks);
561 /* csid/index -> mb */
562 ret = cstombx(&sc->sc_dst_encoding,
563 *out, *outbytes, csid, idx, &szrout,
564 cv->cv_shared->ci_hooks);
568 *inbytes -= tmpin-*in; /* szrin is insufficient on \0. */
578 restore_encoding_state(&sc->sc_src_encoding);
579 restore_encoding_state(&sc->sc_dst_encoding);