hashtable.h

Larbin互联网蜘蛛索引系统

// Larbin
// Sebastien Ailleret
// 23-11-99 -> 14-01-00

/* class hashTable
 * This class is in charge of making sure we don't crawl twice the same url
 */

#ifndef HASHTABLE_H
#define HASHTABLE_H

#include "types.h"
#include "xutils/url.h"

class hashTable {
 private:
  ssize_t size;
  char *table;

 public:
  /* constructor */
  hashTable (bool create);

  /* destructor */
  ~hashTable ();

  /* save the hashTable in a file */
  void save();

  /* test if this url is allready in the hashtable
   * return true if it has been added
   * return false if it has allready been seen
   */
  bool test (url *U);

  /* set a url as present in the hashtable
   */
  void set (url *U);

  /* add a new url in the hashtable
   * return true if it has been added
   * return false if it has allready been seen
   */
  bool testSet (url *U);
};

#endif // HASHTABLE_H