#include "exit.h"
#include "scan.h"
#include "str.h"
#include "buffer.h"
#include "strerr.h"
#include "cdb.h"

#define FATAL "cdbnext: fatal: "

void die_read(void)
{
  strerr_die2sys(111,FATAL,"unable to read input: ");
}
void die_write(void)
{
  strerr_die2sys(111,FATAL,"unable to write output: ");
}

static struct cdb c;
char buf[1024];

main(int argc,char **argv)
{
  char *key;
  int r;
  uint32 pos;
  uint32 len;
  unsigned long u = 0;

  key = argv[1];

  cdb_init(&c,0);

  r=cdb_successor(&c,key,key?strlen(key):0);
  if (r == -1) die_read();
  if (!r) _exit(100);

  pos = cdb_keypos(&c);
  len = cdb_keylen(&c);

  while (len > 0) {
	 r = sizeof buf;
	 if (r > len) r = len;
	 if (cdb_read(&c,buf,r,pos) == -1) die_read();
	 if (buffer_put(buffer_1small,buf,r) == -1) die_write();
	 pos += r;
	 len -= r;
  }
  if (buffer_flush(buffer_1small) == -1) die_write();
  _exit(0);
}