mirror of
https://github.com/fluencelabs/musl
synced 2025-06-04 10:31:37 +00:00
35 lines
529 B
C
35 lines
529 B
C
#include "stdio_impl.h"
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#define MIN(a,b) ((a)<(b) ? (a) : (b))
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char *fgets(char *s, int n, FILE *f)
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{
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char *p = s;
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unsigned char *z;
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size_t k;
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if (!n--) return 0;
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FLOCK(f);
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while (n && !feof(f)) {
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z = memchr(f->rpos, '\n', f->rend - f->rpos);
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k = z ? z - f->rpos + 1 : f->rend - f->rpos;
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k = MIN(k, n);
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memcpy(p, f->rpos, k);
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f->rpos += k;
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p += k;
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n -= k;
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if (z) break;
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__underflow(f);
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}
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*p = 0;
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if (ferror(f)) p = s;
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FUNLOCK(f);
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return (p == s) ? 0 : s;
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}
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weak_alias(fgets, fgets_unlocked);
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