3c87aa1d3d
load of _l suffixed versions of various standard library functions that use the global locale, making them take an explicit locale parameter. Also adds support for per-thread locales. This work was funded by the FreeBSD Foundation. Please test any code you have that uses the C standard locale functions! Reviewed by: das (gdtoa changes) Approved by: dim (mentor)
161 lines
4.0 KiB
C
161 lines
4.0 KiB
C
/*-
|
|
* Copyright (c) 2004 Tim J. Robbins. All rights reserved.
|
|
* Copyright (c) 2003 David Xu <davidxu@freebsd.org>
|
|
* All rights reserved.
|
|
*
|
|
* Copyright (c) 2011 The FreeBSD Foundation
|
|
* All rights reserved.
|
|
* Portions of this software were developed by David Chisnall
|
|
* under sponsorship from the FreeBSD Foundation.
|
|
*
|
|
* 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/param.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <errno.h>
|
|
#include <runetype.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <wchar.h>
|
|
#include "mblocal.h"
|
|
|
|
static size_t _GB2312_mbrtowc(wchar_t * __restrict, const char * __restrict,
|
|
size_t, mbstate_t * __restrict);
|
|
static int _GB2312_mbsinit(const mbstate_t *);
|
|
static size_t _GB2312_wcrtomb(char * __restrict, wchar_t,
|
|
mbstate_t * __restrict);
|
|
|
|
typedef struct {
|
|
int count;
|
|
u_char bytes[2];
|
|
} _GB2312State;
|
|
|
|
int
|
|
_GB2312_init(struct xlocale_ctype *l, _RuneLocale *rl)
|
|
{
|
|
|
|
l->runes = rl;
|
|
l->__mbrtowc = _GB2312_mbrtowc;
|
|
l->__wcrtomb = _GB2312_wcrtomb;
|
|
l->__mbsinit = _GB2312_mbsinit;
|
|
l->__mb_cur_max = 2;
|
|
l->__mb_sb_limit = 128;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
_GB2312_mbsinit(const mbstate_t *ps)
|
|
{
|
|
|
|
return (ps == NULL || ((const _GB2312State *)ps)->count == 0);
|
|
}
|
|
|
|
static __inline int
|
|
_GB2312_check(const char *str, size_t n)
|
|
{
|
|
const u_char *s = (const u_char *)str;
|
|
|
|
if (n == 0)
|
|
/* Incomplete multibyte sequence */
|
|
return (-2);
|
|
if (s[0] >= 0xa1 && s[0] <= 0xfe) {
|
|
if (n < 2)
|
|
/* Incomplete multibyte sequence */
|
|
return (-2);
|
|
if (s[1] < 0xa1 || s[1] > 0xfe)
|
|
/* Invalid multibyte sequence */
|
|
return (-1);
|
|
return (2);
|
|
} else if (s[0] & 0x80) {
|
|
/* Invalid multibyte sequence */
|
|
return (-1);
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
static size_t
|
|
_GB2312_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
|
|
mbstate_t * __restrict ps)
|
|
{
|
|
_GB2312State *gs;
|
|
wchar_t wc;
|
|
int i, len, ocount;
|
|
size_t ncopy;
|
|
|
|
gs = (_GB2312State *)ps;
|
|
|
|
if (gs->count < 0 || gs->count > sizeof(gs->bytes)) {
|
|
errno = EINVAL;
|
|
return ((size_t)-1);
|
|
}
|
|
|
|
if (s == NULL) {
|
|
s = "";
|
|
n = 1;
|
|
pwc = NULL;
|
|
}
|
|
|
|
ncopy = MIN(MIN(n, MB_CUR_MAX), sizeof(gs->bytes) - gs->count);
|
|
memcpy(gs->bytes + gs->count, s, ncopy);
|
|
ocount = gs->count;
|
|
gs->count += ncopy;
|
|
s = (char *)gs->bytes;
|
|
n = gs->count;
|
|
|
|
if ((len = _GB2312_check(s, n)) < 0)
|
|
return ((size_t)len);
|
|
wc = 0;
|
|
i = len;
|
|
while (i-- > 0)
|
|
wc = (wc << 8) | (unsigned char)*s++;
|
|
if (pwc != NULL)
|
|
*pwc = wc;
|
|
gs->count = 0;
|
|
return (wc == L'\0' ? 0 : len - ocount);
|
|
}
|
|
|
|
static size_t
|
|
_GB2312_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
|
|
{
|
|
_GB2312State *gs;
|
|
|
|
gs = (_GB2312State *)ps;
|
|
|
|
if (gs->count != 0) {
|
|
errno = EINVAL;
|
|
return ((size_t)-1);
|
|
}
|
|
|
|
if (s == NULL)
|
|
/* Reset to initial shift state (no-op) */
|
|
return (1);
|
|
if (wc & 0x8000) {
|
|
*s++ = (wc >> 8) & 0xff;
|
|
*s = wc & 0xff;
|
|
return (2);
|
|
}
|
|
*s = wc & 0xff;
|
|
return (1);
|
|
}
|