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TextHandler.hpp

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/*==========================================================================
 * Copyright (c) 2001 Carnegie Mellon University.  All Rights Reserved.
 *
 * Use of the Lemur Toolkit for Language Modeling and Information Retrieval
 * is subject to the terms of the software license set forth in the LICENSE
 * file included with this software, and also available at
 * http://www.cs.cmu.edu/~lemur/license.html
 *
 *==========================================================================
*/

#ifndef NULL
#define NULL 0
#endif

#ifndef _TEXTHANDLER_HPP
#define _TEXTHANDLER_HPP




//  Might make more sense as TextSource and TextDestination with
//  functions in the middle of the chain inheriting from both.


class TextHandler {

public:
  TextHandler() {
    textHandler = NULL;
  }

  virtual void foundDoc(char * docno) {
    docno = handleDoc(docno);
    if (textHandler != NULL) 
      textHandler->foundDoc(docno);
  }
  virtual void foundWord(char * word) {
    word = handleWord(word);
    if (textHandler != NULL)
      textHandler->foundWord(word);
  }
  virtual void setTextHandler(TextHandler * th) {
    textHandler = th;
  }

  virtual char * handleDoc(char * docno) { return docno; }
  virtual char * handleWord(char * word) { return word; }

protected:
  TextHandler * textHandler;
};

#endif

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