---

TextHandler.hpp

Go to the documentation of this file.

/*==========================================================================
 *
 *  Original source copyright (c) 2001, Carnegie Mellon University.
 *  See copyright.cmu for details.
 *  Modifications copyright (c) 2002, University of Massachusetts.
 *  See copyright.umass for details.
 *
 *==========================================================================
*/

#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.
#include <cstdio>

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 foundSymbol(char * sym) {
    sym = handleSymbol(sym);
    if (textHandler != NULL)
      textHandler->foundSymbol(sym);
  }

  virtual void setTextHandler(TextHandler * th) {
    textHandler = th;
  }

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

protected:
  TextHandler * textHandler;
};

#endif

---