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:
633 bytes
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Line | |
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1 | #include "stdio_impl.h"
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2 | #include "locale_impl.h"
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3 | #include <wchar.h>
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4 | #include <limits.h>
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5 | #include <ctype.h>
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6 | #include <string.h>
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7 |
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8 | wint_t ungetwc(wint_t c, FILE *f)
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9 | {
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10 | unsigned char mbc[MB_LEN_MAX];
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11 | int l;
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12 | locale_t *ploc = &CURRENT_LOCALE, loc = *ploc;
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13 |
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14 | FLOCK(f);
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15 |
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16 | if (f->mode <= 0) fwide(f, 1);
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17 | *ploc = f->locale;
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18 |
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19 | if (!f->rpos) __toread(f);
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20 | if (!f->rpos || c == WEOF || (l = wcrtomb((void *)mbc, c, 0)) < 0 ||
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21 | f->rpos < f->buf - UNGET + l) {
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22 | FUNLOCK(f);
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23 | *ploc = loc;
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24 | return WEOF;
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25 | }
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26 |
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27 | if (isascii(c)) *--f->rpos = c;
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28 | else memcpy(f->rpos -= l, mbc, l);
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29 |
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30 | f->flags &= ~F_EOF;
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31 |
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32 | FUNLOCK(f);
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33 | *ploc = loc;
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34 | return c;
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35 | }
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