ad30f8e79b
setting. It can be built by setting the WITH_ICONV knob. While this knob is unset, the library part, the binaries, the header file and the metadata files will not be built or installed so it makes no impact on the system if left turned off. This work is based on the iconv implementation in NetBSD but a great number of improvements and feature additions have been included: - Some utilities have been added. There is a conversion table generator, which can compare conversion tables to reference data generated by GNU libiconv. This helps ensuring conversion compatibility. - UTF-16 surrogate support and some endianness issues have been fixed. - The rather chaotic Makefiles to build metadata have been refactored and cleaned up, now it is easy to read and it is also easier to add support for new encodings. - A bunch of new encodings and encoding aliases have been added. - Support for 1->2, 1->3 and 1->4 mappings, which is needed for transliterating with flying accents as GNU does, like "u. - Lots of warnings have been fixed, the major part of the code is now WARNS=6 clean. - New section 1 and section 5 manual pages have been added. - Some GNU-specific calls have been implemented: iconvlist(), iconvctl(), iconv_canonicalize(), iconv_open_into() - Support for GNU's //IGNORE suffix has been added. - The "-" argument for stdin is now recognized in iconv(1) as per POSIX. - The Big5 conversion module has been fixed. - The iconv.h header files is supposed to be compatible with the GNU version, i.e. sources should build with base iconv.h and GNU libiconv. It also includes a macro magic to deal with the char ** and const char ** incompatibility. - GNU compatibility: "" or "char" means the current local encoding in use - Various cleanups and style(9) fixes. Approved by: delphij (mentor) Obtained from: The NetBSD Project Sponsored by: Google Summer of Code 2009
584 lines
14 KiB
C
584 lines
14 KiB
C
/* $FreeBSD$ */
|
|
/* $NetBSD: citrus_iconv_std.c,v 1.15 2006/11/13 19:08:19 tnozaki Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c)2003 Citrus Project,
|
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* All rights reserved.
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*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
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|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
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|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
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*/
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|
|
|
#include <sys/cdefs.h>
|
|
#include <sys/endian.h>
|
|
#include <sys/queue.h>
|
|
|
|
#include <assert.h>
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|
#include <errno.h>
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|
#include <limits.h>
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|
#include <stdbool.h>
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|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "citrus_namespace.h"
|
|
#include "citrus_types.h"
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|
#include "citrus_module.h"
|
|
#include "citrus_region.h"
|
|
#include "citrus_mmap.h"
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|
#include "citrus_hash.h"
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|
#include "citrus_iconv.h"
|
|
#include "citrus_stdenc.h"
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|
#include "citrus_mapper.h"
|
|
#include "citrus_csmapper.h"
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|
#include "citrus_memstream.h"
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|
#include "citrus_iconv_std.h"
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|
#include "citrus_esdb.h"
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|
|
|
/* ---------------------------------------------------------------------- */
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|
|
|
_CITRUS_ICONV_DECLS(iconv_std);
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|
_CITRUS_ICONV_DEF_OPS(iconv_std);
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|
|
|
|
|
/* ---------------------------------------------------------------------- */
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|
|
|
int
|
|
_citrus_iconv_std_iconv_getops(struct _citrus_iconv_ops *ops)
|
|
{
|
|
|
|
memcpy(ops, &_citrus_iconv_std_iconv_ops,
|
|
sizeof(_citrus_iconv_std_iconv_ops));
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------- */
|
|
|
|
/*
|
|
* convenience routines for stdenc.
|
|
*/
|
|
static __inline void
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|
save_encoding_state(struct _citrus_iconv_std_encoding *se)
|
|
{
|
|
|
|
if (se->se_ps)
|
|
memcpy(se->se_pssaved, se->se_ps,
|
|
_stdenc_get_state_size(se->se_handle));
|
|
}
|
|
|
|
static __inline void
|
|
restore_encoding_state(struct _citrus_iconv_std_encoding *se)
|
|
{
|
|
|
|
if (se->se_ps)
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|
memcpy(se->se_ps, se->se_pssaved,
|
|
_stdenc_get_state_size(se->se_handle));
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|
}
|
|
|
|
static __inline void
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|
init_encoding_state(struct _citrus_iconv_std_encoding *se)
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|
{
|
|
|
|
if (se->se_ps)
|
|
_stdenc_init_state(se->se_handle, se->se_ps);
|
|
}
|
|
|
|
static __inline int
|
|
mbtocsx(struct _citrus_iconv_std_encoding *se,
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|
_csid_t *csid, _index_t *idx, char **s, size_t n, size_t *nresult,
|
|
struct iconv_hooks *hooks)
|
|
{
|
|
|
|
return (_stdenc_mbtocs(se->se_handle, csid, idx, s, n, se->se_ps,
|
|
nresult, hooks));
|
|
}
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|
|
|
static __inline int
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|
cstombx(struct _citrus_iconv_std_encoding *se,
|
|
char *s, size_t n, _csid_t csid, _index_t idx, size_t *nresult,
|
|
struct iconv_hooks *hooks)
|
|
{
|
|
|
|
return (_stdenc_cstomb(se->se_handle, s, n, csid, idx, se->se_ps,
|
|
nresult, hooks));
|
|
}
|
|
|
|
static __inline int
|
|
wctombx(struct _citrus_iconv_std_encoding *se,
|
|
char *s, size_t n, _wc_t wc, size_t *nresult,
|
|
struct iconv_hooks *hooks)
|
|
{
|
|
|
|
return (_stdenc_wctomb(se->se_handle, s, n, wc, se->se_ps, nresult,
|
|
hooks));
|
|
}
|
|
|
|
static __inline int
|
|
put_state_resetx(struct _citrus_iconv_std_encoding *se, char *s, size_t n,
|
|
size_t *nresult)
|
|
{
|
|
|
|
return (_stdenc_put_state_reset(se->se_handle, s, n, se->se_ps, nresult));
|
|
}
|
|
|
|
static __inline int
|
|
get_state_desc_gen(struct _citrus_iconv_std_encoding *se, int *rstate)
|
|
{
|
|
struct _stdenc_state_desc ssd;
|
|
int ret;
|
|
|
|
ret = _stdenc_get_state_desc(se->se_handle, se->se_ps,
|
|
_STDENC_SDID_GENERIC, &ssd);
|
|
if (!ret)
|
|
*rstate = ssd.u.generic.state;
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* init encoding context
|
|
*/
|
|
static int
|
|
init_encoding(struct _citrus_iconv_std_encoding *se, struct _stdenc *cs,
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|
void *ps1, void *ps2)
|
|
{
|
|
int ret = -1;
|
|
|
|
se->se_handle = cs;
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|
se->se_ps = ps1;
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|
se->se_pssaved = ps2;
|
|
|
|
if (se->se_ps)
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|
ret = _stdenc_init_state(cs, se->se_ps);
|
|
if (!ret && se->se_pssaved)
|
|
ret = _stdenc_init_state(cs, se->se_pssaved);
|
|
|
|
return (ret);
|
|
}
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|
|
|
static int
|
|
open_csmapper(struct _csmapper **rcm, const char *src, const char *dst,
|
|
unsigned long *rnorm)
|
|
{
|
|
struct _csmapper *cm;
|
|
int ret;
|
|
|
|
ret = _csmapper_open(&cm, src, dst, 0, rnorm);
|
|
if (ret)
|
|
return (ret);
|
|
if (_csmapper_get_src_max(cm) != 1 || _csmapper_get_dst_max(cm) != 1 ||
|
|
_csmapper_get_state_size(cm) != 0) {
|
|
_csmapper_close(cm);
|
|
return (EINVAL);
|
|
}
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|
|
|
*rcm = cm;
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|
|
|
return (0);
|
|
}
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|
|
|
static void
|
|
close_dsts(struct _citrus_iconv_std_dst_list *dl)
|
|
{
|
|
struct _citrus_iconv_std_dst *sd;
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|
|
|
while ((sd = TAILQ_FIRST(dl)) != NULL) {
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|
TAILQ_REMOVE(dl, sd, sd_entry);
|
|
_csmapper_close(sd->sd_mapper);
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|
free(sd);
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|
}
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|
}
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|
static int
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open_dsts(struct _citrus_iconv_std_dst_list *dl,
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|
const struct _esdb_charset *ec, const struct _esdb *dbdst)
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|
{
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|
struct _citrus_iconv_std_dst *sd, *sdtmp;
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|
unsigned long norm;
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|
int i, ret;
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|
sd = malloc(sizeof(*sd));
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|
if (sd == NULL)
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|
return (errno);
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|
|
|
for (i = 0; i < dbdst->db_num_charsets; i++) {
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|
ret = open_csmapper(&sd->sd_mapper, ec->ec_csname,
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|
dbdst->db_charsets[i].ec_csname, &norm);
|
|
if (ret == 0) {
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|
sd->sd_csid = dbdst->db_charsets[i].ec_csid;
|
|
sd->sd_norm = norm;
|
|
/* insert this mapper by sorted order. */
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|
TAILQ_FOREACH(sdtmp, dl, sd_entry) {
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|
if (sdtmp->sd_norm > norm) {
|
|
TAILQ_INSERT_BEFORE(sdtmp, sd,
|
|
sd_entry);
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|
sd = NULL;
|
|
break;
|
|
}
|
|
}
|
|
if (sd)
|
|
TAILQ_INSERT_TAIL(dl, sd, sd_entry);
|
|
sd = malloc(sizeof(*sd));
|
|
if (sd == NULL) {
|
|
ret = errno;
|
|
close_dsts(dl);
|
|
return (ret);
|
|
}
|
|
} else if (ret != ENOENT) {
|
|
close_dsts(dl);
|
|
free(sd);
|
|
return (ret);
|
|
}
|
|
}
|
|
free(sd);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
close_srcs(struct _citrus_iconv_std_src_list *sl)
|
|
{
|
|
struct _citrus_iconv_std_src *ss;
|
|
|
|
while ((ss = TAILQ_FIRST(sl)) != NULL) {
|
|
TAILQ_REMOVE(sl, ss, ss_entry);
|
|
close_dsts(&ss->ss_dsts);
|
|
free(ss);
|
|
}
|
|
}
|
|
|
|
static int
|
|
open_srcs(struct _citrus_iconv_std_src_list *sl,
|
|
const struct _esdb *dbsrc, const struct _esdb *dbdst)
|
|
{
|
|
struct _citrus_iconv_std_src *ss;
|
|
int count = 0, i, ret;
|
|
|
|
ss = malloc(sizeof(*ss));
|
|
if (ss == NULL)
|
|
return (errno);
|
|
|
|
TAILQ_INIT(&ss->ss_dsts);
|
|
|
|
for (i = 0; i < dbsrc->db_num_charsets; i++) {
|
|
ret = open_dsts(&ss->ss_dsts, &dbsrc->db_charsets[i], dbdst);
|
|
if (ret)
|
|
goto err;
|
|
if (!TAILQ_EMPTY(&ss->ss_dsts)) {
|
|
ss->ss_csid = dbsrc->db_charsets[i].ec_csid;
|
|
TAILQ_INSERT_TAIL(sl, ss, ss_entry);
|
|
ss = malloc(sizeof(*ss));
|
|
if (ss == NULL) {
|
|
ret = errno;
|
|
goto err;
|
|
}
|
|
count++;
|
|
TAILQ_INIT(&ss->ss_dsts);
|
|
}
|
|
}
|
|
free(ss);
|
|
|
|
return (count ? 0 : ENOENT);
|
|
|
|
err:
|
|
free(ss);
|
|
close_srcs(sl);
|
|
return (ret);
|
|
}
|
|
|
|
/* do convert a character */
|
|
#define E_NO_CORRESPONDING_CHAR ENOENT /* XXX */
|
|
static int
|
|
/*ARGSUSED*/
|
|
do_conv(const struct _citrus_iconv_std_shared *is,
|
|
_csid_t *csid, _index_t *idx)
|
|
{
|
|
struct _citrus_iconv_std_dst *sd;
|
|
struct _citrus_iconv_std_src *ss;
|
|
_index_t tmpidx;
|
|
int ret;
|
|
|
|
TAILQ_FOREACH(ss, &is->is_srcs, ss_entry) {
|
|
if (ss->ss_csid == *csid) {
|
|
TAILQ_FOREACH(sd, &ss->ss_dsts, sd_entry) {
|
|
ret = _csmapper_convert(sd->sd_mapper,
|
|
&tmpidx, *idx, NULL);
|
|
switch (ret) {
|
|
case _MAPPER_CONVERT_SUCCESS:
|
|
*csid = sd->sd_csid;
|
|
*idx = tmpidx;
|
|
return (0);
|
|
case _MAPPER_CONVERT_NONIDENTICAL:
|
|
break;
|
|
case _MAPPER_CONVERT_SRC_MORE:
|
|
/*FALLTHROUGH*/
|
|
case _MAPPER_CONVERT_DST_MORE:
|
|
/*FALLTHROUGH*/
|
|
case _MAPPER_CONVERT_ILSEQ:
|
|
return (EILSEQ);
|
|
case _MAPPER_CONVERT_FATAL:
|
|
return (EINVAL);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return (E_NO_CORRESPONDING_CHAR);
|
|
}
|
|
/* ---------------------------------------------------------------------- */
|
|
|
|
static int
|
|
/*ARGSUSED*/
|
|
_citrus_iconv_std_iconv_init_shared(struct _citrus_iconv_shared *ci,
|
|
const char * __restrict src, const char * __restrict dst)
|
|
{
|
|
struct _citrus_esdb esdbdst, esdbsrc;
|
|
struct _citrus_iconv_std_shared *is;
|
|
int ret;
|
|
|
|
is = malloc(sizeof(*is));
|
|
if (is == NULL) {
|
|
ret = errno;
|
|
goto err0;
|
|
}
|
|
ret = _citrus_esdb_open(&esdbsrc, src);
|
|
if (ret)
|
|
goto err1;
|
|
ret = _citrus_esdb_open(&esdbdst, dst);
|
|
if (ret)
|
|
goto err2;
|
|
ret = _stdenc_open(&is->is_src_encoding, esdbsrc.db_encname,
|
|
esdbsrc.db_variable, esdbsrc.db_len_variable);
|
|
if (ret)
|
|
goto err3;
|
|
ret = _stdenc_open(&is->is_dst_encoding, esdbdst.db_encname,
|
|
esdbdst.db_variable, esdbdst.db_len_variable);
|
|
if (ret)
|
|
goto err4;
|
|
is->is_use_invalid = esdbdst.db_use_invalid;
|
|
is->is_invalid = esdbdst.db_invalid;
|
|
|
|
TAILQ_INIT(&is->is_srcs);
|
|
ret = open_srcs(&is->is_srcs, &esdbsrc, &esdbdst);
|
|
if (ret)
|
|
goto err5;
|
|
|
|
_esdb_close(&esdbsrc);
|
|
_esdb_close(&esdbdst);
|
|
ci->ci_closure = is;
|
|
|
|
return (0);
|
|
|
|
err5:
|
|
_stdenc_close(is->is_dst_encoding);
|
|
err4:
|
|
_stdenc_close(is->is_src_encoding);
|
|
err3:
|
|
_esdb_close(&esdbdst);
|
|
err2:
|
|
_esdb_close(&esdbsrc);
|
|
err1:
|
|
free(is);
|
|
err0:
|
|
return (ret);
|
|
}
|
|
|
|
static void
|
|
_citrus_iconv_std_iconv_uninit_shared(struct _citrus_iconv_shared *ci)
|
|
{
|
|
struct _citrus_iconv_std_shared *is = ci->ci_closure;
|
|
|
|
if (is == NULL)
|
|
return;
|
|
|
|
_stdenc_close(is->is_src_encoding);
|
|
_stdenc_close(is->is_dst_encoding);
|
|
close_srcs(&is->is_srcs);
|
|
free(is);
|
|
}
|
|
|
|
static int
|
|
_citrus_iconv_std_iconv_init_context(struct _citrus_iconv *cv)
|
|
{
|
|
const struct _citrus_iconv_std_shared *is = cv->cv_shared->ci_closure;
|
|
struct _citrus_iconv_std_context *sc;
|
|
char *ptr;
|
|
size_t sz, szpsdst, szpssrc;
|
|
|
|
szpssrc = _stdenc_get_state_size(is->is_src_encoding);
|
|
szpsdst = _stdenc_get_state_size(is->is_dst_encoding);
|
|
|
|
sz = (szpssrc + szpsdst)*2 + sizeof(struct _citrus_iconv_std_context);
|
|
sc = malloc(sz);
|
|
if (sc == NULL)
|
|
return (errno);
|
|
|
|
ptr = (char *)&sc[1];
|
|
if (szpssrc > 0)
|
|
init_encoding(&sc->sc_src_encoding, is->is_src_encoding,
|
|
ptr, ptr+szpssrc);
|
|
else
|
|
init_encoding(&sc->sc_src_encoding, is->is_src_encoding,
|
|
NULL, NULL);
|
|
ptr += szpssrc*2;
|
|
if (szpsdst > 0)
|
|
init_encoding(&sc->sc_dst_encoding, is->is_dst_encoding,
|
|
ptr, ptr+szpsdst);
|
|
else
|
|
init_encoding(&sc->sc_dst_encoding, is->is_dst_encoding,
|
|
NULL, NULL);
|
|
|
|
cv->cv_closure = (void *)sc;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
_citrus_iconv_std_iconv_uninit_context(struct _citrus_iconv *cv)
|
|
{
|
|
|
|
free(cv->cv_closure);
|
|
}
|
|
|
|
static int
|
|
_citrus_iconv_std_iconv_convert(struct _citrus_iconv * __restrict cv,
|
|
char * __restrict * __restrict in, size_t * __restrict inbytes,
|
|
char * __restrict * __restrict out, size_t * __restrict outbytes,
|
|
uint32_t flags, size_t * __restrict invalids)
|
|
{
|
|
const struct _citrus_iconv_std_shared *is = cv->cv_shared->ci_closure;
|
|
struct _citrus_iconv_std_context *sc = cv->cv_closure;
|
|
_csid_t csid;
|
|
_index_t idx;
|
|
char *tmpin;
|
|
size_t inval, szrin, szrout;
|
|
int ret, state = 0;
|
|
|
|
inval = 0;
|
|
if (in == NULL || *in == NULL) {
|
|
/* special cases */
|
|
if (out != NULL && *out != NULL) {
|
|
/* init output state and store the shift sequence */
|
|
save_encoding_state(&sc->sc_src_encoding);
|
|
save_encoding_state(&sc->sc_dst_encoding);
|
|
szrout = 0;
|
|
|
|
ret = put_state_resetx(&sc->sc_dst_encoding,
|
|
*out, *outbytes, &szrout);
|
|
if (ret)
|
|
goto err;
|
|
|
|
if (szrout == (size_t)-2) {
|
|
/* too small to store the character */
|
|
ret = EINVAL;
|
|
goto err;
|
|
}
|
|
*out += szrout;
|
|
*outbytes -= szrout;
|
|
} else
|
|
/* otherwise, discard the shift sequence */
|
|
init_encoding_state(&sc->sc_dst_encoding);
|
|
init_encoding_state(&sc->sc_src_encoding);
|
|
*invalids = 0;
|
|
return (0);
|
|
}
|
|
|
|
/* normal case */
|
|
for (;;) {
|
|
if (*inbytes == 0) {
|
|
ret = get_state_desc_gen(&sc->sc_src_encoding, &state);
|
|
if (state == _STDENC_SDGEN_INITIAL ||
|
|
state == _STDENC_SDGEN_STABLE)
|
|
break;
|
|
}
|
|
|
|
/* save the encoding states for the error recovery */
|
|
save_encoding_state(&sc->sc_src_encoding);
|
|
save_encoding_state(&sc->sc_dst_encoding);
|
|
|
|
/* mb -> csid/index */
|
|
tmpin = *in;
|
|
szrin = szrout = 0;
|
|
ret = mbtocsx(&sc->sc_src_encoding, &csid, &idx, &tmpin,
|
|
*inbytes, &szrin, cv->cv_shared->ci_hooks);
|
|
if (ret)
|
|
goto err;
|
|
|
|
if (szrin == (size_t)-2) {
|
|
/* incompleted character */
|
|
ret = get_state_desc_gen(&sc->sc_src_encoding, &state);
|
|
if (ret) {
|
|
ret = EINVAL;
|
|
goto err;
|
|
}
|
|
switch (state) {
|
|
case _STDENC_SDGEN_INITIAL:
|
|
case _STDENC_SDGEN_STABLE:
|
|
/* fetch shift sequences only. */
|
|
goto next;
|
|
}
|
|
ret = EINVAL;
|
|
goto err;
|
|
}
|
|
/* convert the character */
|
|
ret = do_conv(is, &csid, &idx);
|
|
if (ret) {
|
|
if (ret == E_NO_CORRESPONDING_CHAR) {
|
|
inval++;
|
|
szrout = 0;
|
|
if ((((flags & _CITRUS_ICONV_F_HIDE_INVALID) == 0) &&
|
|
!cv->cv_shared->ci_discard_ilseq) &&
|
|
is->is_use_invalid) {
|
|
ret = wctombx(&sc->sc_dst_encoding,
|
|
*out, *outbytes, is->is_invalid,
|
|
&szrout, cv->cv_shared->ci_hooks);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
goto next;
|
|
} else
|
|
goto err;
|
|
}
|
|
/* csid/index -> mb */
|
|
ret = cstombx(&sc->sc_dst_encoding,
|
|
*out, *outbytes, csid, idx, &szrout,
|
|
cv->cv_shared->ci_hooks);
|
|
if (ret)
|
|
goto err;
|
|
next:
|
|
*inbytes -= tmpin-*in; /* szrin is insufficient on \0. */
|
|
*in = tmpin;
|
|
*outbytes -= szrout;
|
|
*out += szrout;
|
|
}
|
|
*invalids = inval;
|
|
|
|
return (0);
|
|
|
|
err:
|
|
restore_encoding_state(&sc->sc_src_encoding);
|
|
restore_encoding_state(&sc->sc_dst_encoding);
|
|
*invalids = inval;
|
|
|
|
return (ret);
|
|
}
|