Last change
on this file since 413 was 398, checked in by coas-nagasima, 5 years ago |
mbedTLS版Azure IoT Hub接続サンプルのソースコードを追加
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Property svn:eol-style
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Property svn:mime-type
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File size:
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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 <errno.h>
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5 |
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6 | static wint_t __fgetwc_unlocked_internal(FILE *f)
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7 | {
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8 | mbstate_t st = { 0 };
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9 | wchar_t wc;
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10 | int c;
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11 | unsigned char b;
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12 | size_t l;
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13 |
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14 | /* Convert character from buffer if possible */
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15 | if (f->rpos < f->rend) {
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16 | l = mbrtowc(&wc, (void *)f->rpos, f->rend - f->rpos, &st);
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17 | if (l+2 >= 2) {
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18 | f->rpos += l + !l; /* l==0 means 1 byte, null */
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19 | return wc;
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20 | }
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21 | if (l == -1) {
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22 | f->rpos++;
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23 | return WEOF;
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24 | }
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25 | } else l = -2;
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26 |
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27 | /* Convert character byte-by-byte */
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28 | while (l == -2) {
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29 | b = c = getc_unlocked(f);
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30 | if (c < 0) {
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31 | if (!mbsinit(&st)) errno = EILSEQ;
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32 | return WEOF;
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33 | }
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34 | l = mbrtowc(&wc, (void *)&b, 1, &st);
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35 | if (l == -1) return WEOF;
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36 | }
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37 |
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38 | return wc;
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39 | }
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40 |
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41 | wint_t __fgetwc_unlocked(FILE *f)
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42 | {
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43 | locale_t *ploc = &CURRENT_LOCALE, loc = *ploc;
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44 | if (f->mode <= 0) fwide(f, 1);
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45 | *ploc = f->locale;
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46 | wchar_t wc = __fgetwc_unlocked_internal(f);
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47 | *ploc = loc;
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48 | return wc;
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49 | }
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50 |
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51 | wint_t fgetwc(FILE *f)
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52 | {
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53 | wint_t c;
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54 | FLOCK(f);
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55 | c = __fgetwc_unlocked(f);
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56 | FUNLOCK(f);
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57 | return c;
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58 | }
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59 |
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60 | weak_alias(__fgetwc_unlocked, fgetwc_unlocked);
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61 | weak_alias(__fgetwc_unlocked, getwc_unlocked);
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