91 lines
2.4 KiB
C
Executable File
91 lines
2.4 KiB
C
Executable File
/* Convert wide string to string.
|
|
Copyright (C) 2008, 2010-2024 Free Software Foundation, Inc.
|
|
Written by Bruno Haible <bruno@clisp.org>, 2008.
|
|
|
|
This file is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as
|
|
published by the Free Software Foundation, either version 3 of the
|
|
License, or (at your option) any later version.
|
|
|
|
This file is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>. */
|
|
|
|
size_t
|
|
FUNC (char *dest, const SCHAR_T **srcp, size_t len, mbstate_t *ps)
|
|
{
|
|
if (ps == NULL)
|
|
ps = &INTERNAL_STATE;
|
|
{
|
|
const SCHAR_T *src = *srcp;
|
|
size_t cur_max = MB_CUR_MAX;
|
|
char buf[64];
|
|
|
|
if (!(cur_max <= sizeof (buf)))
|
|
abort ();
|
|
|
|
if (dest != NULL)
|
|
{
|
|
char *destptr = dest;
|
|
|
|
for (; len > 0; src++)
|
|
{
|
|
SCHAR_T wc = *src;
|
|
size_t ret = WCRTOMB (len >= cur_max ? destptr : buf, wc, ps);
|
|
|
|
if (ret == (size_t)(-1))
|
|
goto bad_input;
|
|
if (!(ret <= cur_max))
|
|
abort ();
|
|
if (len < ret)
|
|
break;
|
|
if (len < cur_max)
|
|
memcpy (destptr, buf, ret);
|
|
if (wc == 0)
|
|
{
|
|
src = NULL;
|
|
/* Here mbsinit (ps). */
|
|
break;
|
|
}
|
|
destptr += ret;
|
|
len -= ret;
|
|
}
|
|
*srcp = src;
|
|
return destptr - dest;
|
|
}
|
|
else
|
|
{
|
|
/* Ignore dest and len, don't store *srcp at the end, and
|
|
don't clobber *ps. */
|
|
mbstate_t state = *ps;
|
|
size_t totalcount = 0;
|
|
|
|
for (;; src++)
|
|
{
|
|
SCHAR_T wc = *src;
|
|
size_t ret = WCRTOMB (buf, wc, &state);
|
|
|
|
if (ret == (size_t)(-1))
|
|
goto bad_input2;
|
|
if (wc == 0)
|
|
{
|
|
/* Here mbsinit (&state). */
|
|
break;
|
|
}
|
|
totalcount += ret;
|
|
}
|
|
return totalcount;
|
|
}
|
|
|
|
bad_input:
|
|
*srcp = src;
|
|
bad_input2:
|
|
errno = EILSEQ;
|
|
return (size_t)(-1);
|
|
}
|
|
}
|