Last change
on this file since 445 was 444, checked in by coas-nagasima, 4 years ago |
muslのソースコードを追加
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Property svn:eol-style
set to
native
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Property svn:mime-type
set to
text/x-csrc;charset=UTF-8
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File size:
874 bytes
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1 | #include <wchar.h>
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2 |
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3 | size_t wcsrtombs(char *restrict s, const wchar_t **restrict ws, size_t n, mbstate_t *restrict st)
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4 | {
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5 | const wchar_t *ws2;
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6 | char buf[4];
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7 | size_t N = n, l;
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8 | if (!s) {
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9 | for (n=0, ws2=*ws; *ws2; ws2++) {
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10 | if (*ws2 >= 0x80u) {
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11 | l = wcrtomb(buf, *ws2, 0);
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12 | if (!(l+1)) return -1;
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13 | n += l;
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14 | } else n++;
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15 | }
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16 | return n;
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17 | }
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18 | while (n>=4) {
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19 | if (**ws-1u >= 0x7fu) {
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20 | if (!**ws) {
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21 | *s = 0;
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22 | *ws = 0;
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23 | return N-n;
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24 | }
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25 | l = wcrtomb(s, **ws, 0);
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26 | if (!(l+1)) return -1;
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27 | s += l;
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28 | n -= l;
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29 | } else {
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30 | *s++ = **ws;
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31 | n--;
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32 | }
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33 | (*ws)++;
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34 | }
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35 | while (n) {
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36 | if (**ws-1u >= 0x7fu) {
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37 | if (!**ws) {
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38 | *s = 0;
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39 | *ws = 0;
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40 | return N-n;
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41 | }
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42 | l = wcrtomb(buf, **ws, 0);
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43 | if (!(l+1)) return -1;
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44 | if (l>n) return N-n;
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45 | wcrtomb(s, **ws, 0);
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46 | s += l;
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47 | n -= l;
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48 | } else {
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49 | *s++ = **ws;
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50 | n--;
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51 | }
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52 | (*ws)++;
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53 | }
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54 | return N;
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55 | }
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