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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native
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Property svn:mime-type
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text/x-csrc;charset=UTF-8
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File size:
718 bytes
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1 | #include "stdio_impl.h"
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2 | #include <string.h>
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3 |
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4 | #define MIN(a,b) ((a)<(b) ? (a) : (b))
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5 |
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6 | char *fgets(char *restrict s, int n, FILE *restrict f)
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7 | {
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8 | char *p = s;
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9 | unsigned char *z;
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10 | size_t k;
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11 | int c;
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12 |
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13 | FLOCK(f);
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14 |
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15 | if (n--<=1) {
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16 | f->mode |= f->mode-1;
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17 | FUNLOCK(f);
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18 | if (n) return 0;
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19 | *s = 0;
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20 | return s;
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21 | }
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22 |
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23 | while (n) {
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24 | z = memchr(f->rpos, '\n', f->rend - f->rpos);
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25 | k = z ? z - f->rpos + 1 : f->rend - f->rpos;
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26 | k = MIN(k, n);
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27 | memcpy(p, f->rpos, k);
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28 | f->rpos += k;
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29 | p += k;
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30 | n -= k;
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31 | if (z || !n) break;
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32 | if ((c = getc_unlocked(f)) < 0) {
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33 | if (p==s || !feof(f)) s = 0;
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34 | break;
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35 | }
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36 | n--;
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37 | if ((*p++ = c) == '\n') break;
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38 | }
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39 | if (s) *p = 0;
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40 |
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41 | FUNLOCK(f);
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42 |
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43 | return s;
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44 | }
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45 |
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46 | weak_alias(fgets, fgets_unlocked);
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