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/* ISC license. */
#include <sys/types.h>
#include <sys/uio.h>
#include <errno.h>
#include <skalibs/bytestr.h>
#include <skalibs/buffer.h>
#include <skalibs/skamisc.h>
int getlnmax (buffer *b, char *d, size_t max, size_t *w, char sep)
{
if (max < *w) return (errno = EINVAL, -1) ;
for (;;)
{
struct iovec v[2] ;
size_t len = buffer_len(b) ;
size_t pos ;
ssize_t r ;
buffer_rpeek(b, v) ;
if (len > max - *w) len = max - *w ;
pos = siovec_bytechr(v, 2, sep) ;
if (pos > len) pos = len ;
r = pos < len ;
buffer_getnofill(b, d + *w, pos + r) ; *w += pos ;
if (*w >= max) return (errno = ERANGE, -1) ;
if (r) return 1 ;
r = buffer_fill(b) ;
if (r <= 0) return r ;
}
}
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