#include "buffer.h"
int buffer_copy(buffer *bout,buffer *bin)
{
int n;
char *x;
for (;;) {
n = buffer_feed(bin);
if (n < 0) return -2;
if (!n) return 0;
x = buffer_PEEK(bin);
if (buffer_put(bout,x,n) == -1) return -3;
buffer_SEEK(bin,n);
}