Last change
on this file since 388 was 388, checked in by coas-nagasima, 5 years ago |
Azure IoT Hub Device C SDK を使ったサンプルの追加
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Property svn:eol-style
set to
native
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Property svn:keywords
set to
Id
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Property svn:mime-type
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text/x-csrc
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File size:
718 bytes
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Rev | Line | |
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[388] | 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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