#include "stralloc.h"
#include "buffer.h"

static ssize_t strallocwrite(int fd,char* buf,size_t len,void* myself) {
  buffer* b=myself;
  stralloc* sa=b->cookie;
  if (stralloc_readyplus(sa,1024)==0) return 0;
  b->x=sa->s+sa->len;
  b->p=0;
  b->a=1024;
  (void)fd;
  (void)buf;
  return (ssize_t)len;
}

int buffer_tosa(buffer* b,stralloc* sa) {
  if (stralloc_ready(sa,1024)==0) return -1;
  b->x=sa->s;
  b->p=0;
  b->n=0;
  b->a=1024;
  b->fd=0;
  b->op=strallocwrite;
  b->cookie=sa;
  b->deinit=0;
  return 0;
}