95 lines
1.9 KiB
C
95 lines
1.9 KiB
C
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#include "mb_wc_common.h"
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#include <wchar.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <limits.h>
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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static int __MINGW_ATTRIB_NONNULL(1)
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__wcrtomb_cp (char *dst, wchar_t wc, const unsigned int cp,
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const unsigned int mb_max)
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{
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if (wc > 255)
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{
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errno = EILSEQ;
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return -1;
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}
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if (cp == 0)
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{
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*dst = (char) wc;
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return 1;
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}
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else
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{
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int invalid_char = 0;
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int size = WideCharToMultiByte(get_cp_from_locale(),
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0 /* Is this correct flag? */,
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&wc, 1, dst, mb_max,
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NULL, &invalid_char);
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if (size == 0 || invalid_char)
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{
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errno = EILSEQ;
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return -1;
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}
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return size;
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}
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}
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size_t
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wcrtomb (char *dst, wchar_t wc, mbstate_t * __UNUSED_PARAM (ps))
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{
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char byte_bucket [MB_LEN_MAX];
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char* tmp_dst = dst ? dst : byte_bucket;
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return (size_t)__wcrtomb_cp (tmp_dst, wc, get_cp_from_locale (),
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MB_CUR_MAX);
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}
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size_t wcsrtombs (char *dst, const wchar_t **src, size_t len,
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mbstate_t * __UNUSED_PARAM (ps))
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{
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int ret = 0;
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size_t n = 0;
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const unsigned int cp = get_cp_from_locale();
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const unsigned int mb_max = MB_CUR_MAX;
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if (src == NULL || *src == NULL) /* undefined behavior */
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return 0;
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if (dst != NULL)
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{
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const wchar_t ** saved_src = src;
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while (n < len)
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{
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if ((ret = __wcrtomb_cp (dst, **src, cp, mb_max)) <= 0)
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return (size_t) -1;
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n += ret;
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dst += ret;
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if (*(dst - 1) == '\0')
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{
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*saved_src = (wchar_t) NULL;;
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return (n - 1);
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}
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*src++;
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}
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}
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else
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{
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char byte_bucket [MB_LEN_MAX];
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while (n < len)
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{
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if ((ret = __wcrtomb_cp (byte_bucket, **src, cp, mb_max))
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<= 0)
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return (size_t) -1;
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n += ret;
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if (byte_bucket [ret - 1] == '\0')
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return (n - 1);
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*src++;
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}
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}
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return n;
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}
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