getln2.c

#include "byte.h"
#include "getln.h"

int
getln2 (buffer *ss, stralloc *sa, char **cont, unsigned int *clen, int sep)
{
    int n = 0;
    register char *x = 0;
    register unsigned int i = 0;

    if (!stralloc_ready (sa, 0))
        return -1;
    sa->len = 0;

    for (;;)
    {
        n = buffer_feed (ss);
        if (0 > n)
            return -1;
        if (n == 0)
        {
            *clen = 0;
            return 0;
        }
        x = buffer_PEEK (ss);
        i = byte_chr (x, n, sep);
        if (i < (unsigned)n)
        {
            buffer_SEEK (ss, *clen = i + 1);
            *cont = x;
            return 0;
        }
        if (!stralloc_readyplus (sa, n))
            return -1;
        i = sa->len;
        sa->len = i + buffer_get (ss, sa->s + i, n);
    }
}