1aba0c48bc
have magic number check in locale modules. rename: lib/libc/locale/setlocale_sb.c -> setlocale1.c NOTE: this commit does not enable multibyte locale support, yet.
287 lines
6.4 KiB
C
287 lines
6.4 KiB
C
/* $NetBSD: utf2.c,v 1.6 2001/01/25 01:25:10 itojun Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Paul Borman at Krystal Technologies.
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
#if 0
|
|
static char sccsid[] = "@(#)utf2.c 8.1 (Berkeley) 6/4/93";
|
|
#else
|
|
__RCSID("$NetBSD: utf2.c,v 1.6 2001/01/25 01:25:10 itojun Exp $");
|
|
#endif
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include "rune.h"
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
const char *_UTF2_magic __P((void));
|
|
int _UTF2_init __P((_RuneLocale *));
|
|
size_t _UTF2_mbrtowc __P((struct _RuneLocale *, rune_t *, const char *, size_t,
|
|
void *));
|
|
size_t _UTF2_wcrtomb __P((struct _RuneLocale *, char *, size_t, const rune_t,
|
|
void *));
|
|
void _UTF2_initstate __P((_RuneLocale *, void *));
|
|
void _UTF2_packstate __P((_RuneLocale *, mbstate_t *, void *));
|
|
void _UTF2_unpackstate __P((_RuneLocale *, void *, const mbstate_t *));
|
|
|
|
static int _utf_count[16] = {
|
|
1, 1, 1, 1, 1, 1, 1, 1,
|
|
0, 0, 0, 0, 2, 2, 3, 0,
|
|
};
|
|
|
|
typedef struct {
|
|
void *runelocale; /* reserved for future thread-safeness */
|
|
char ch[3];
|
|
int chlen;
|
|
} _UTF2State;
|
|
|
|
static _RuneState _UTF2_RuneState = {
|
|
sizeof(_UTF2State), /* sizestate */
|
|
_UTF2_initstate, /* initstate */
|
|
_UTF2_packstate, /* packstate */
|
|
_UTF2_unpackstate /* unpackstate */
|
|
};
|
|
|
|
const char *
|
|
_UTF2_magic()
|
|
{
|
|
|
|
return _RUNE_MODULE_1("LC_CTYPE");
|
|
}
|
|
|
|
int
|
|
_UTF2_init(rl)
|
|
_RuneLocale *rl;
|
|
{
|
|
|
|
_DIAGASSERT(rl != NULL);
|
|
|
|
/* sanity check to avoid overruns */
|
|
if (sizeof(_UTF2State) > sizeof(mbstate_t))
|
|
return (EINVAL);
|
|
|
|
rl->__rune_mbrtowc = _UTF2_mbrtowc;
|
|
rl->__rune_wcrtomb = _UTF2_wcrtomb;
|
|
|
|
rl->__rune_RuneState = &_UTF2_RuneState;
|
|
rl->__rune_mb_cur_max = 3;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* s is non-null */
|
|
size_t
|
|
_UTF2_mbrtowc(rl, pwcs, s, n, state)
|
|
_RuneLocale *rl;
|
|
rune_t *pwcs;
|
|
const char *s;
|
|
size_t n;
|
|
void *state;
|
|
{
|
|
_UTF2State *ps;
|
|
rune_t rune;
|
|
int c;
|
|
|
|
/* rl appears to be unused */
|
|
/* pwcs may be NULL */
|
|
_DIAGASSERT(s != NULL);
|
|
_DIAGASSERT(state != NULL);
|
|
|
|
ps = state;
|
|
|
|
/* make sure we have the first byte in the buffer */
|
|
switch (ps->chlen) {
|
|
case 0:
|
|
if (n < 1)
|
|
return (size_t)-2;
|
|
ps->ch[0] = *s++;
|
|
ps->chlen = 1;
|
|
n--;
|
|
break;
|
|
case 1:
|
|
case 2:
|
|
break;
|
|
default:
|
|
/* illegal state */
|
|
goto encoding_error;
|
|
}
|
|
|
|
c = _utf_count[(ps->ch[0] >> 4) & 0xf];
|
|
if (c == 0)
|
|
goto encoding_error;
|
|
while (ps->chlen < c) {
|
|
if (n < 1)
|
|
return (size_t)-2;
|
|
ps->ch[ps->chlen] = *s++;
|
|
ps->chlen++;
|
|
n--;
|
|
}
|
|
|
|
switch (c) {
|
|
case 1:
|
|
rune = ps->ch[0] & 0xff;
|
|
break;
|
|
case 2:
|
|
if ((ps->ch[1] & 0xc0) != 0x80)
|
|
goto encoding_error;
|
|
rune = ((ps->ch[0] & 0x1F) << 6) | (ps->ch[1] & 0x3F);
|
|
break;
|
|
case 3:
|
|
if ((ps->ch[1] & 0xC0) != 0x80 || (ps->ch[2] & 0xC0) != 0x80)
|
|
goto encoding_error;
|
|
rune = ((ps->ch[0] & 0x1F) << 12) | ((ps->ch[1] & 0x3F) << 6)
|
|
| (ps->ch[2] & 0x3F);
|
|
break;
|
|
}
|
|
|
|
ps->chlen = 0;
|
|
if (pwcs)
|
|
*pwcs = rune;
|
|
if (!rune)
|
|
return 0;
|
|
else
|
|
return c;
|
|
|
|
encoding_error:
|
|
ps->chlen = 0;
|
|
return (size_t)-1;
|
|
}
|
|
|
|
/* s is non-null */
|
|
size_t
|
|
_UTF2_wcrtomb(rl, s, n, wc, state)
|
|
_RuneLocale *rl;
|
|
char *s;
|
|
size_t n;
|
|
const rune_t wc;
|
|
void *state;
|
|
{
|
|
|
|
/* rl appears to be unused */
|
|
_DIAGASSERT(s != NULL);
|
|
/* state appears to be unused */
|
|
|
|
/* check invalid sequence */
|
|
if (wc & ~0xffff) {
|
|
errno = EILSEQ;
|
|
return (size_t)-1;
|
|
}
|
|
|
|
if (wc & 0xf800) {
|
|
if (n < 3) {
|
|
/* bound check failure */
|
|
errno = EILSEQ; /*XXX*/
|
|
return (size_t)-1;
|
|
}
|
|
|
|
s[0] = 0xE0 | ((wc >> 12) & 0x0F);
|
|
s[1] = 0x80 | ((wc >> 6) & 0x3F);
|
|
s[2] = 0x80 | ((wc) & 0x3F);
|
|
return 3;
|
|
} else {
|
|
if (wc & 0x0780) {
|
|
if (n < 2) {
|
|
/* bound check failure */
|
|
errno = EILSEQ; /*XXX*/
|
|
return (size_t)-1;
|
|
}
|
|
|
|
s[0] = 0xC0 | ((wc >> 6) & 0x1F);
|
|
s[1] = 0x80 | ((wc) & 0x3F);
|
|
return 2;
|
|
} else {
|
|
if (n < 1) {
|
|
/* bound check failure */
|
|
errno = EILSEQ; /*XXX*/
|
|
return (size_t)-1;
|
|
}
|
|
|
|
s[0] = wc;
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
_UTF2_initstate(rl, s)
|
|
_RuneLocale *rl;
|
|
void *s;
|
|
{
|
|
_UTF2State *state;
|
|
|
|
/* rl appears to be unused */
|
|
|
|
if (!s)
|
|
return;
|
|
state = s;
|
|
memset(state, 0, sizeof(_UTF2State));
|
|
}
|
|
|
|
void
|
|
_UTF2_packstate(rl, dst, src)
|
|
_RuneLocale *rl;
|
|
mbstate_t *dst;
|
|
void* src;
|
|
{
|
|
|
|
/* rl appears to be unused */
|
|
_DIAGASSERT(dst != NULL);
|
|
_DIAGASSERT(src != NULL);
|
|
|
|
memcpy((caddr_t)dst, (caddr_t)src, sizeof(_UTF2State));
|
|
return;
|
|
}
|
|
|
|
void
|
|
_UTF2_unpackstate(rl, dst, src)
|
|
_RuneLocale *rl;
|
|
void* dst;
|
|
const mbstate_t *src;
|
|
{
|
|
|
|
/* rl appears to be unused */
|
|
_DIAGASSERT(dst != NULL);
|
|
_DIAGASSERT(src != NULL);
|
|
|
|
memcpy((caddr_t)dst, (caddr_t)src, sizeof(_UTF2State));
|
|
return;
|
|
}
|