80 lines
1.3 KiB
C
80 lines
1.3 KiB
C
#include <reent.h>
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#include <wchar.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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size_t
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_DEFUN (_mbsrtowcs_r, (r, dst, src, n, ps),
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struct _reent *r _AND
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wchar_t *dst _AND
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const char **src _AND
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size_t n _AND
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mbstate_t *ps)
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{
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wchar_t *ptr = dst;
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const char *tmp_src;
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size_t max;
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size_t count = 0;
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int bytes;
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#ifdef MB_CAPABLE
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if (ps == NULL)
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{
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_REENT_CHECK_MISC(r);
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ps = &(_REENT_MBSRTOWCS_STATE(r));
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}
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#endif
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if (dst == NULL)
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{
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/* Ignore original n value and do not alter src pointer if the
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dst pointer is NULL. */
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n = (size_t)-1;
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tmp_src = *src;
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src = &tmp_src;
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}
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max = n;
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while (n > 0)
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{
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bytes = _mbrtowc_r (r, ptr, *src, MB_CUR_MAX, ps);
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if (bytes > 0)
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{
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*src += bytes;
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++count;
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ptr = (dst == NULL) ? NULL : ptr + 1;
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--n;
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}
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else if (bytes == -2)
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{
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*src += MB_CUR_MAX;
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}
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else if (bytes == 0)
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{
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*src = NULL;
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return count;
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}
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else
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{
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ps->__count = 0;
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r->_errno = EILSEQ;
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return (size_t)-1;
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}
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}
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return (size_t)max;
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}
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#ifndef _REENT_ONLY
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size_t
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_DEFUN (mbsrtowcs, (dst, src, len, ps),
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wchar_t *dst _AND
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const char **src _AND
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size_t len _AND
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mbstate_t *ps)
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{
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return _mbsrtowcs_r (_REENT, dst, src, len, ps);
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}
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#endif /* !_REENT_ONLY */
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