minix/lib/libc/locale/rune.c

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/* $NetBSD: rune.c,v 1.45 2012/08/08 20:16:50 wiz Exp $ */
/*-
* Copyright (c)2010 Citrus Project,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* 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
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/endian.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#define __SETLOCALE_SOURCE__
#include <locale.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wchar.h>
#include "setlocale_local.h"
#include "citrus_module.h"
#include "citrus_ctype.h"
#include "runetype_local.h"
#include "multibyte.h"
#include "_wctype_local.h"
#include "_wctrans_local.h"
typedef struct {
_RuneLocale rl;
unsigned char rlp_ctype_tab [_CTYPE_NUM_CHARS + 1];
short rlp_tolower_tab[_CTYPE_NUM_CHARS + 1];
short rlp_toupper_tab[_CTYPE_NUM_CHARS + 1];
char rlp_codeset[33]; /* XXX */
} _RuneLocalePriv;
static __inline void
_rune_wctype_init(_RuneLocale *rl)
{
memcpy(&rl->rl_wctype, &_DefaultRuneLocale.rl_wctype,
sizeof(rl->rl_wctype));
}
static __inline void
_rune_wctrans_init(_RuneLocale *rl)
{
rl->rl_wctrans[_WCTRANS_INDEX_LOWER].te_name = "tolower";
rl->rl_wctrans[_WCTRANS_INDEX_LOWER].te_cached = &rl->rl_maplower[0];
rl->rl_wctrans[_WCTRANS_INDEX_LOWER].te_extmap = &rl->rl_maplower_ext;
rl->rl_wctrans[_WCTRANS_INDEX_UPPER].te_name = "toupper";
rl->rl_wctrans[_WCTRANS_INDEX_UPPER].te_cached = &rl->rl_mapupper[0];
rl->rl_wctrans[_WCTRANS_INDEX_UPPER].te_extmap = &rl->rl_mapupper_ext;
}
static __inline void
_rune_init_priv(_RuneLocalePriv *rlp)
{
#if _CTYPE_CACHE_SIZE != _CTYPE_NUM_CHARS
int i;
for (i = _CTYPE_CACHE_SIZE; i < _CTYPE_NUM_CHARS; ++i) {
rlp->rlp_ctype_tab [i + 1] = 0;
rlp->rlp_tolower_tab[i + 1] = i;
rlp->rlp_toupper_tab[i + 1] = i;
}
#endif
rlp->rlp_ctype_tab [0] = 0;
rlp->rlp_tolower_tab[0] = EOF;
rlp->rlp_toupper_tab[0] = EOF;
rlp->rl.rl_ctype_tab = (const unsigned char *)&rlp->rlp_ctype_tab[0];
rlp->rl.rl_tolower_tab = (const short *)&rlp->rlp_tolower_tab[0];
rlp->rl.rl_toupper_tab = (const short *)&rlp->rlp_toupper_tab[0];
rlp->rl.rl_codeset = (const char *)&rlp->rlp_codeset[0];
_rune_wctype_init(&rlp->rl);
_rune_wctrans_init(&rlp->rl);
}
static __inline void
_rune_find_codeset(char *s, size_t n,
char *var, size_t *plenvar)
{
size_t lenvar;
const char *endvar;
#define _RUNE_CODESET_LEN (sizeof(_RUNE_CODESET)-1)
lenvar = *plenvar;
for (/**/; lenvar > _RUNE_CODESET_LEN; ++var, --lenvar) {
if (!memcmp(var, _RUNE_CODESET, _RUNE_CODESET_LEN)) {
*var = '\0';
*plenvar -= lenvar;
endvar = &var[_RUNE_CODESET_LEN];
while (n-- > 1 && lenvar-- > _RUNE_CODESET_LEN) {
if (*endvar == ' ' || *endvar == '\t')
break;
*s++ = *endvar++;
}
break;
}
}
*s = '\0';
}
static __inline int
_rune_read_file(const char * __restrict var, size_t lenvar,
_RuneLocale ** __restrict prl)
{
int ret, i;
const _FileRuneLocale *frl;
const _FileRuneEntry *fre;
const uint32_t *frune;
_RuneLocalePriv *rlp;
_RuneLocale *rl;
_RuneEntry *re;
uint32_t *rune;
uint32_t runetype_len, maplower_len, mapupper_len, variable_len;
size_t len, n;
if (lenvar < sizeof(*frl))
return EFTYPE;
lenvar -= sizeof(*frl);
frl = (const _FileRuneLocale *)(const void *)var;
if (memcmp(_RUNECT10_MAGIC, &frl->frl_magic[0], sizeof(frl->frl_magic)))
return EFTYPE;
runetype_len = be32toh(frl->frl_runetype_ext.frr_nranges);
maplower_len = be32toh(frl->frl_maplower_ext.frr_nranges);
mapupper_len = be32toh(frl->frl_mapupper_ext.frr_nranges);
len = runetype_len + maplower_len + mapupper_len;
fre = (const _FileRuneEntry *)(const void *)(frl + 1);
frune = (const uint32_t *)(const void *)(fre + len);
variable_len = be32toh((uint32_t)frl->frl_variable_len);
n = len * sizeof(*fre);
if (lenvar < n)
return EFTYPE;
lenvar -= n;
n = sizeof(*rlp) + (len * sizeof(*re)) + lenvar;
rlp = (_RuneLocalePriv *)malloc(n);
if (rlp == NULL)
return ENOMEM;
_rune_init_priv(rlp);
rl = &rlp->rl;
re = (_RuneEntry *)(void *)(rlp + 1);
rune = (uint32_t *)(void *)(re + len);
for (i = 0; i < _CTYPE_CACHE_SIZE; ++i) {
rl->rl_runetype[i] = be32toh(frl->frl_runetype[i]);
rl->rl_maplower[i] = be32toh((uint32_t)frl->frl_maplower[i]);
rl->rl_mapupper[i] = be32toh((uint32_t)frl->frl_mapupper[i]);
}
#define READ_RANGE(name) \
do { \
const _FileRuneEntry *end_fre; \
const uint32_t *end_frune; \
\
rl->rl_##name##_ext.rr_nranges = name##_len; \
rl->rl_##name##_ext.rr_rune_ranges = re; \
\
end_fre = fre + name##_len; \
while (fre < end_fre) { \
re->re_min = be32toh((uint32_t)fre->fre_min); \
re->re_max = be32toh((uint32_t)fre->fre_max); \
re->re_map = be32toh((uint32_t)fre->fre_map); \
if (re->re_map != 0) { \
re->re_rune_types = NULL; \
} else { \
re->re_rune_types = rune; \
len = re->re_max - re->re_min + 1; \
n = len * sizeof(*frune); \
if (lenvar < n) { \
ret = EFTYPE; \
goto err; \
} \
lenvar -= n; \
end_frune = frune + len; \
while (frune < end_frune) \
*rune++ = be32toh(*frune++); \
} \
++fre, ++re; \
} \
} while (/*CONSTCOND*/0)
READ_RANGE(runetype);
READ_RANGE(maplower);
READ_RANGE(mapupper);
if (lenvar < variable_len) {
ret = EFTYPE;
goto err;
}
memcpy((void *)rune, (void const *)frune, variable_len);
rl->rl_variable_len = variable_len;
rl->rl_variable = (void *)rune;
_rune_find_codeset(rlp->rlp_codeset, sizeof(rlp->rlp_codeset),
(char *)rl->rl_variable, &rl->rl_variable_len);
ret = _citrus_ctype_open(&rl->rl_citrus_ctype, frl->frl_encoding,
rl->rl_variable, rl->rl_variable_len, _PRIVSIZE);
if (ret)
goto err;
if (__mb_len_max_runtime <
_citrus_ctype_get_mb_cur_max(rl->rl_citrus_ctype)) {
ret = EINVAL;
goto err;
}
for (i = 0; i < _CTYPE_CACHE_SIZE; ++i) {
wint_t wc;
ret = _citrus_ctype_btowc(rl->rl_citrus_ctype, i, &wc);
if (ret)
goto err;
if (wc == WEOF) {
rlp->rlp_ctype_tab[i + 1] = 0;
rlp->rlp_tolower_tab[i + 1] = i;
rlp->rlp_toupper_tab[i + 1] = i;
} else {
rlp->rlp_ctype_tab[i + 1] = (unsigned char)
_runetype_to_ctype(_runetype_priv(rl, wc));
#define CONVERT_MAP(name) \
do { \
wint_t map; \
int c; \
\
map = _towctrans_priv(wc, _wctrans_##name(rl)); \
if (map == wc || (_citrus_ctype_wctob(rl->rl_citrus_ctype, \
map, &c) || c == EOF)) \
c = i; \
rlp->rlp_to##name##_tab[i + 1] = (short)c; \
} while (/*CONSTCOND*/0)
CONVERT_MAP(lower);
CONVERT_MAP(upper);
}
}
*prl = rl;
return 0;
err:
free(rlp);
return ret;
}
int
_rune_load(const char * __restrict var, size_t lenvar,
_RuneLocale ** __restrict prl)
{
int ret;
_DIAGASSERT(var != NULL || lenvar < 1);
_DIAGASSERT(prl != NULL);
if (lenvar < 1)
return EFTYPE;
switch (*var) {
case 'R':
ret = _rune_read_file(var, lenvar, prl);
break;
default:
ret = EFTYPE;
}
return ret;
}