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#include "stdio_impl.h"
#define MIN(a,b) ((a)<(b) ? (a) : (b))
char *fgets(char *s, int n, FILE *f)
{
char *p = s;
unsigned char *z;
size_t k;
if (!n--) return 0;
FLOCK(f);
while (n && !feof(f)) {
z = memchr(f->rpos, '\n', f->rend - f->rpos);
k = z ? z - f->rpos + 1 : f->rend - f->rpos;
k = MIN(k, n);
memcpy(p, f->rpos, k);
f->rpos += k;
p += k;
n -= k;
if (z) break;
__underflow(f);
}
*p = 0;
if (ferror(f)) p = s;
FUNLOCK(f);
return (p == s) ? 0 : s;
}
weak_alias(fgets, fgets_unlocked);
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