mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-23 11:18:54 +00:00
19dfd82d81
a macro with parameters. Remove a __DECONST hack and add consts instead for gnu libiconv API compatability. This makes it work with things like devel/boost-libs that expects to use "iconv" as though it were a pointer.
160 lines
4.6 KiB
C
160 lines
4.6 KiB
C
/*-
|
|
* Copyright (c) 2013 Ed Schouten <ed@FreeBSD.org>
|
|
* 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/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/queue.h>
|
|
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <langinfo.h>
|
|
#include <limits.h>
|
|
#include <string.h>
|
|
#include <uchar.h>
|
|
|
|
#include "../iconv/citrus_hash.h"
|
|
#include "../iconv/citrus_module.h"
|
|
#include "../iconv/citrus_iconv.h"
|
|
#include "xlocale_private.h"
|
|
|
|
typedef struct {
|
|
bool initialized;
|
|
struct _citrus_iconv iconv;
|
|
char srcbuf[MB_LEN_MAX];
|
|
size_t srcbuf_len;
|
|
union {
|
|
charXX_t widechar[DSTBUF_LEN];
|
|
char bytes[sizeof(charXX_t) * DSTBUF_LEN];
|
|
} dstbuf;
|
|
size_t dstbuf_len;
|
|
} _ConversionState;
|
|
_Static_assert(sizeof(_ConversionState) <= sizeof(mbstate_t),
|
|
"Size of _ConversionState must not exceed mbstate_t's size.");
|
|
|
|
size_t
|
|
mbrtocXX_l(charXX_t * __restrict pc, const char * __restrict s, size_t n,
|
|
mbstate_t * __restrict ps, locale_t locale)
|
|
{
|
|
_ConversionState *cs;
|
|
struct _citrus_iconv *handle;
|
|
size_t i, retval;
|
|
charXX_t retchar;
|
|
|
|
FIX_LOCALE(locale);
|
|
if (ps == NULL)
|
|
ps = &locale->mbrtocXX;
|
|
cs = (_ConversionState *)ps;
|
|
handle = &cs->iconv;
|
|
|
|
/* Reinitialize mbstate_t. */
|
|
if (s == NULL || !cs->initialized) {
|
|
if (_citrus_iconv_open(&handle,
|
|
nl_langinfo_l(CODESET, locale), UTF_XX_INTERNAL) != 0) {
|
|
cs->initialized = false;
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
handle->cv_shared->ci_discard_ilseq = true;
|
|
handle->cv_shared->ci_hooks = NULL;
|
|
cs->srcbuf_len = cs->dstbuf_len = 0;
|
|
cs->initialized = true;
|
|
if (s == NULL)
|
|
return (0);
|
|
}
|
|
|
|
/* See if we still have characters left from the previous invocation. */
|
|
if (cs->dstbuf_len > 0) {
|
|
retval = (size_t)-3;
|
|
goto return_char;
|
|
}
|
|
|
|
/* Fill up the read buffer as far as possible. */
|
|
if (n > sizeof(cs->srcbuf) - cs->srcbuf_len)
|
|
n = sizeof(cs->srcbuf) - cs->srcbuf_len;
|
|
memcpy(cs->srcbuf + cs->srcbuf_len, s, n);
|
|
|
|
/* Convert as few characters to the dst buffer as possible. */
|
|
for (i = 0; ; i++) {
|
|
const char *src;
|
|
char *dst;
|
|
size_t srcleft, dstleft, invlen;
|
|
int err;
|
|
|
|
src = cs->srcbuf;
|
|
srcleft = cs->srcbuf_len + n;
|
|
dst = cs->dstbuf.bytes;
|
|
dstleft = i * sizeof(charXX_t);
|
|
assert(srcleft <= sizeof(cs->srcbuf) &&
|
|
dstleft <= sizeof(cs->dstbuf.bytes));
|
|
err = _citrus_iconv_convert(handle, &src, &srcleft,
|
|
&dst, &dstleft, 0, &invlen);
|
|
cs->dstbuf_len = (dst - cs->dstbuf.bytes) / sizeof(charXX_t);
|
|
|
|
/* Got new character(s). Return the first. */
|
|
if (cs->dstbuf_len > 0) {
|
|
assert(src - cs->srcbuf > cs->srcbuf_len);
|
|
retval = src - cs->srcbuf - cs->srcbuf_len;
|
|
cs->srcbuf_len = 0;
|
|
goto return_char;
|
|
}
|
|
|
|
/* Increase dst buffer size, to obtain the surrogate pair. */
|
|
if (err == E2BIG)
|
|
continue;
|
|
|
|
/* Illegal sequence. */
|
|
if (invlen > 0) {
|
|
cs->srcbuf_len = 0;
|
|
errno = EILSEQ;
|
|
return ((size_t)-1);
|
|
}
|
|
|
|
/* Save unprocessed remainder for the next invocation. */
|
|
memmove(cs->srcbuf, src, srcleft);
|
|
cs->srcbuf_len = srcleft;
|
|
return ((size_t)-2);
|
|
}
|
|
|
|
return_char:
|
|
retchar = cs->dstbuf.widechar[0];
|
|
memmove(&cs->dstbuf.widechar[0], &cs->dstbuf.widechar[1],
|
|
--cs->dstbuf_len * sizeof(charXX_t));
|
|
if (pc != NULL)
|
|
*pc = retchar;
|
|
if (retchar == 0)
|
|
return (0);
|
|
return (retval);
|
|
}
|
|
|
|
size_t
|
|
mbrtocXX(charXX_t * __restrict pc, const char * __restrict s, size_t n,
|
|
mbstate_t * __restrict ps)
|
|
{
|
|
|
|
return (mbrtocXX_l(pc, s, n, ps, __get_locale()));
|
|
}
|