brazilianstemmer.java

一套java版本的搜索引擎源码

          CT = removeSuffix(CT,"ivas") ; return true ;
      }
      if (suffix(CT,"ivos") && suffix(R2,"ivos")) {
          CT = removeSuffix(CT,"ivos") ; return true ;
      }
      if (suffix(CT,"iras") &&
          suffix(RV,"iras") &&
          suffixPreceded(CT,"iras","e")) {
          CT = replaceSuffix(CT,"iras","ir") ; return true ;
      }
    }

    // suffix lenght = 3
    if (CT.length() >= 3) {
      if (suffix(CT,"eza") && suffix(R2,"eza")) {
          CT = removeSuffix(CT,"eza") ; return true ;
      }
      if (suffix(CT,"ico") && suffix(R2,"ico")) {
          CT = removeSuffix(CT,"ico") ; return true ;
      }
      if (suffix(CT,"ica") && suffix(R2,"ica")) {
          CT = removeSuffix(CT,"ica") ; return true ;
      }
      if (suffix(CT,"oso") && suffix(R2,"oso")) {
          CT = removeSuffix(CT,"oso") ; return true ;
      }
      if (suffix(CT,"osa") && suffix(R2,"osa")) {
          CT = removeSuffix(CT,"osa") ; return true ;
      }
      if (suffix(CT,"iva") && suffix(R2,"iva")) {
          CT = removeSuffix(CT,"iva") ; return true ;
      }
      if (suffix(CT,"ivo") && suffix(R2,"ivo")) {
          CT = removeSuffix(CT,"ivo") ; return true ;
      }
      if (suffix(CT,"ira") &&
          suffix(RV,"ira") &&
          suffixPreceded(CT,"ira","e")) {
          CT = replaceSuffix(CT,"ira","ir") ; return true ;
      }
    }

    // no ending was removed by step1
    return false ;
  }


	/**
	 * Verb suffixes.
   *
   * Search for the longest among the following suffixes in RV,
   * and if found, delete.
   *
   * @return false if no ending was removed
	*/
	private boolean step2() {
    if (RV == null) return false ;

    // suffix lenght = 7
    if (RV.length() >= 7) {
      if (suffix(RV,"issemos")) {
        CT = removeSuffix(CT,"issemos") ; return true;
      }
      if (suffix(RV,"essemos")) {
        CT = removeSuffix(CT,"essemos") ; return true;
      }
      if (suffix(RV,"assemos")) {
        CT = removeSuffix(CT,"assemos") ; return true;
      }
      if (suffix(RV,"ariamos")) {
        CT = removeSuffix(CT,"ariamos") ; return true;
      }
      if (suffix(RV,"eriamos")) {
        CT = removeSuffix(CT,"eriamos") ; return true;
      }
      if (suffix(RV,"iriamos")) {
        CT = removeSuffix(CT,"iriamos") ; return true;
      }
    }

    // suffix lenght = 6
    if (RV.length() >= 6) {
      if (suffix(RV,"iremos")) {
        CT = removeSuffix(CT,"iremos") ; return true;
      }
      if (suffix(RV,"eremos")) {
        CT = removeSuffix(CT,"eremos") ; return true;
      }
      if (suffix(RV,"aremos")) {
        CT = removeSuffix(CT,"aremos") ; return true;
      }
      if (suffix(RV,"avamos")) {
        CT = removeSuffix(CT,"avamos") ; return true;
      }
      if (suffix(RV,"iramos")) {
        CT = removeSuffix(CT,"iramos") ; return true;
      }
      if (suffix(RV,"eramos")) {
        CT = removeSuffix(CT,"eramos") ; return true;
      }
      if (suffix(RV,"aramos")) {
        CT = removeSuffix(CT,"aramos") ; return true;
      }
      if (suffix(RV,"asseis")) {
        CT = removeSuffix(CT,"asseis") ; return true;
      }
      if (suffix(RV,"esseis")) {
        CT = removeSuffix(CT,"esseis") ; return true;
      }
      if (suffix(RV,"isseis")) {
        CT = removeSuffix(CT,"isseis") ; return true;
      }
      if (suffix(RV,"arieis")) {
        CT = removeSuffix(CT,"arieis") ; return true;
      }
      if (suffix(RV,"erieis")) {
        CT = removeSuffix(CT,"erieis") ; return true;
      }
      if (suffix(RV,"irieis")) {
        CT = removeSuffix(CT,"irieis") ; return true;
      }
    }


    // suffix lenght = 5
    if (RV.length() >= 5) {
      if (suffix(RV,"irmos")) {
        CT = removeSuffix(CT,"irmos") ; return true;
      }
      if (suffix(RV,"iamos")) {
        CT = removeSuffix(CT,"iamos") ; return true;
      }
      if (suffix(RV,"armos")) {
        CT = removeSuffix(CT,"armos") ; return true;
      }
      if (suffix(RV,"ermos")) {
        CT = removeSuffix(CT,"ermos") ; return true;
      }
      if (suffix(RV,"areis")) {
        CT = removeSuffix(CT,"areis") ; return true;
      }
      if (suffix(RV,"ereis")) {
        CT = removeSuffix(CT,"ereis") ; return true;
      }
      if (suffix(RV,"ireis")) {
        CT = removeSuffix(CT,"ireis") ; return true;
      }
      if (suffix(RV,"asses")) {
        CT = removeSuffix(CT,"asses") ; return true;
      }
      if (suffix(RV,"esses")) {
        CT = removeSuffix(CT,"esses") ; return true;
      }
      if (suffix(RV,"isses")) {
        CT = removeSuffix(CT,"isses") ; return true;
      }
      if (suffix(RV,"astes")) {
        CT = removeSuffix(CT,"astes") ; return true;
      }
      if (suffix(RV,"assem")) {
        CT = removeSuffix(CT,"assem") ; return true;
      }
      if (suffix(RV,"essem")) {
        CT = removeSuffix(CT,"essem") ; return true;
      }
      if (suffix(RV,"issem")) {
        CT = removeSuffix(CT,"issem") ; return true;
      }
      if (suffix(RV,"ardes")) {
        CT = removeSuffix(CT,"ardes") ; return true;
      }
      if (suffix(RV,"erdes")) {
        CT = removeSuffix(CT,"erdes") ; return true;
      }
      if (suffix(RV,"irdes")) {
        CT = removeSuffix(CT,"irdes") ; return true;
      }
      if (suffix(RV,"ariam")) {
        CT = removeSuffix(CT,"ariam") ; return true;
      }
      if (suffix(RV,"eriam")) {
        CT = removeSuffix(CT,"eriam") ; return true;
      }
      if (suffix(RV,"iriam")) {
        CT = removeSuffix(CT,"iriam") ; return true;
      }
      if (suffix(RV,"arias")) {
        CT = removeSuffix(CT,"arias") ; return true;
      }
      if (suffix(RV,"erias")) {
        CT = removeSuffix(CT,"erias") ; return true;
      }
      if (suffix(RV,"irias")) {
        CT = removeSuffix(CT,"irias") ; return true;
      }
      if (suffix(RV,"estes")) {
        CT = removeSuffix(CT,"estes") ; return true;
      }
      if (suffix(RV,"istes")) {
        CT = removeSuffix(CT,"istes") ; return true;
      }
      if (suffix(RV,"areis")) {
        CT = removeSuffix(CT,"areis") ; return true;
      }
      if (suffix(RV,"aveis")) {
        CT = removeSuffix(CT,"aveis") ; return true;
      }
    }

    // suffix lenght = 4
    if (RV.length() >= 4) {
      if (suffix(RV,"aria")) {
        CT = removeSuffix(CT,"aria") ; return true;
      }
      if (suffix(RV,"eria")) {
        CT = removeSuffix(CT,"eria") ; return true;
      }
      if (suffix(RV,"iria")) {
        CT = removeSuffix(CT,"iria") ; return true;
      }
      if (suffix(RV,"asse")) {
        CT = removeSuffix(CT,"asse") ; return true;
      }
      if (suffix(RV,"esse")) {
        CT = removeSuffix(CT,"esse") ; return true;
      }
      if (suffix(RV,"isse")) {
        CT = removeSuffix(CT,"isse") ; return true;
      }
      if (suffix(RV,"aste")) {
        CT = removeSuffix(CT,"aste") ; return true;
      }
      if (suffix(RV,"este")) {
        CT = removeSuffix(CT,"este") ; return true;
      }
      if (suffix(RV,"iste")) {
        CT = removeSuffix(CT,"iste") ; return true;
      }
      if (suffix(RV,"arei")) {
        CT = removeSuffix(CT,"arei") ; return true;
      }
      if (suffix(RV,"erei")) {
        CT = removeSuffix(CT,"erei") ; return true;
      }
      if (suffix(RV,"irei")) {
        CT = removeSuffix(CT,"irei") ; return true;
      }
      if (suffix(RV,"aram")) {
        CT = removeSuffix(CT,"aram") ; return true;
      }
      if (suffix(RV,"eram")) {
        CT = removeSuffix(CT,"eram") ; return true;
      }
      if (suffix(RV,"iram")) {
        CT = removeSuffix(CT,"iram") ; return true;
      }
      if (suffix(RV,"avam")) {
        CT = removeSuffix(CT,"avam") ; return true;
      }
      if (suffix(RV,"arem")) {
        CT = removeSuffix(CT,"arem") ; return true;
      }
      if (suffix(RV,"erem")) {
        CT = removeSuffix(CT,"erem") ; return true;
      }
      if (suffix(RV,"irem")) {
        CT = removeSuffix(CT,"irem") ; return true;
      }
      if (suffix(RV,"ando")) {
        CT = removeSuffix(CT,"ando") ; return true;
      }
      if (suffix(RV,"endo")) {
        CT = removeSuffix(CT,"endo") ; return true;
      }
      if (suffix(RV,"indo")) {
        CT = removeSuffix(CT,"indo") ; return true;
      }
      if (suffix(RV,"arao")) {
        CT = removeSuffix(CT,"arao") ; return true;
      }
      if (suffix(RV,"erao")) {
        CT = removeSuffix(CT,"erao") ; return true;
      }
      if (suffix(RV,"irao")) {
        CT = removeSuffix(CT,"irao") ; return true;
      }
      if (suffix(RV,"adas")) {
        CT = removeSuffix(CT,"adas") ; return true;
      }
      if (suffix(RV,"idas")) {
        CT = removeSuffix(CT,"idas") ; return true;
      }
      if (suffix(RV,"aras")) {
        CT = removeSuffix(CT,"aras") ; return true;
      }
      if (suffix(RV,"eras")) {
        CT = removeSuffix(CT,"eras") ; return true;
      }
      if (suffix(RV,"iras")) {
        CT = removeSuffix(CT,"iras") ; return true;
      }
      if (suffix(RV,"avas")) {
        CT = removeSuffix(CT,"avas") ; return true;
      }
      if (suffix(RV,"ares")) {
        CT = removeSuffix(CT,"ares") ; return true;
      }
      if (suffix(RV,"eres")) {
        CT = removeSuffix(CT,"eres") ; return true;
      }
      if (suffix(RV,"ires")) {
        CT = removeSuffix(CT,"ires") ; return true;
      }
      if (suffix(RV,"ados")) {
        CT = removeSuffix(CT,"ados") ; return true;
      }
      if (suffix(RV,"idos")) {
        CT = removeSuffix(CT,"idos") ; return true;
      }
      if (suffix(RV,"amos")) {
        CT = removeSuffix(CT,"amos") ; return true;
      }
      if (suffix(RV,"emos")) {
        CT = removeSuffix(CT,"emos") ; return true;
      }
      if (suffix(RV,"imos")) {
        CT = removeSuffix(CT,"imos") ; return true;
      }
      if (suffix(RV,"iras")) {
        CT = removeSuffix(CT,"iras") ; return true;
      }
      if (suffix(RV,"ieis")) {
        CT = removeSuffix(CT,"ieis") ; return true;
      }
    }

    // suffix lenght = 3
    if (RV.length() >= 3) {
      if (suffix(RV,"ada")) {
        CT = removeSuffix(CT,"ada") ; return true;
      }
      if (suffix(RV,"ida")) {
        CT = removeSuffix(CT,"ida") ; return true;
      }
      if (suffix(RV,"ara")) {
        CT = removeSuffix(CT,"ara") ; return true;
      }
      if (suffix(RV,"era")) {
        CT = removeSuffix(CT,"era") ; return true;
      }
      if (suffix(RV,"ira")) {
        CT = removeSuffix(CT,"ava") ; return true;
      }
      if (suffix(RV,"iam")) {
        CT = removeSuffix(CT,"iam") ; return true;
      }
      if (suffix(RV,"ado")) {
        CT = removeSuffix(CT,"ado") ; return true;
      }
      if (suffix(RV,"ido")) {
        CT = removeSuffix(CT,"ido") ; return true;
      }
      if (suffix(RV,"ias")) {
        CT = removeSuffix(CT,"ias") ; return true;
      }
      if (suffix(RV,"ais")) {
        CT = removeSuffix(CT,"ais") ; return true;
      }
      if (suffix(RV,"eis")) {
        CT = removeSuffix(CT,"eis") ; return true;
      }
      if (suffix(RV,"ira")) {
        CT = removeSuffix(CT,"ira") ; return true;
      }
      if (suffix(RV,"ear")) {
        CT = removeSuffix(CT,"ear") ; return true;
      }
    }

    // suffix lenght = 2
    if (RV.length() >= 2) {
      if (suffix(RV,"ia")) {
        CT = removeSuffix(CT,"ia") ; return true;
      }
      if (suffix(RV,"ei")) {
        CT = removeSuffix(CT,"ei") ; return true;
      }
      if (suffix(RV,"am")) {
        CT = removeSuffix(CT,"am") ; return true;
      }
      if (suffix(RV,"em")) {
        CT = removeSuffix(CT,"em") ; return true;
      }
      if (suffix(RV,"ar")) {
        CT = removeSuffix(CT,"ar") ; return true;
      }
      if (suffix(RV,"er")) {
        CT = removeSuffix(CT,"er") ; return true;
      }
      if (suffix(RV,"ir")) {
        CT = removeSuffix(CT,"ir") ; return true;
      }
      if (suffix(RV,"as")) {
        CT = removeSuffix(CT,"as") ; return true;
      }
      if (suffix(RV,"es")) {
        CT = removeSuffix(CT,"es") ; return true;
      }
      if (suffix(RV,"is")) {
        CT = removeSuffix(CT,"is") ; return true;
      }
      if (suffix(RV,"eu")) {
        CT = removeSuffix(CT,"eu") ; return true;
      }
      if (suffix(RV,"iu")) {
        CT = removeSuffix(CT,"iu") ; return true;
      }
      if (suffix(RV,"iu")) {
        CT = removeSuffix(CT,"iu") ; return true;
      }
      if (suffix(RV,"ou")) {
        CT = removeSuffix(CT,"ou") ; return true;
      }
    }

    // no ending was removed by step2
    return false ;
  }

	/**
	 * Delete suffix 'i' if in RV and preceded by 'c'
   *
	*/
	private void step3() {
    if (RV == null) return ;

    if (suffix(RV,"i") && suffixPreceded(RV,"i","c")) {
      CT = removeSuffix(CT,"i") ;
    }

  }

	/**
	 * Residual suffix
   *
   * If the word ends with one of the suffixes (os a i o á í ó)
   * in RV, delete it
   *
	*/
	private void step4() {
    if (RV == null) return  ;

    if (suffix(RV,"os")) {
      CT = removeSuffix(CT,"os") ; return ;
    }
    if (suffix(RV,"a")) {
      CT = removeSuffix(CT,"a") ; return ;
    }
    if (suffix(RV,"i")) {
      CT = removeSuffix(CT,"i") ; return ;
    }
    if (suffix(RV,"o")) {
      CT = removeSuffix(CT,"o") ; return ;
    }

  }

	/**
	 * If the word ends with one of ( e é ê) in RV,delete it,
   * and if preceded by 'gu' (or 'ci') with the 'u' (or 'i') in RV,
   * delete the 'u' (or 'i')
   *
   * Or if the word ends ç remove the cedilha
   *
	*/
	private void step5() {
    if (RV == null) return  ;

    if (suffix(RV,"e")) {
      if (suffixPreceded(RV,"e","gu")) {
        CT = removeSuffix(CT,"e") ;
        CT = removeSuffix(CT,"u") ;
        return ;
      }

      if (suffixPreceded(RV,"e","ci")) {
        CT = removeSuffix(CT,"e") ;
        CT = removeSuffix(CT,"i") ;
        return ;
      }

      CT = removeSuffix(CT,"e") ; return ;
    }
  }

	/**
	 * For log and debug purpose
	 *
	 * @return  TERM, CT, RV, R1 and R2
	 */
	public String log() {
    return " (TERM = " + TERM + ")" +
           " (CT = " + CT +")" +
           " (RV = " + RV +")" +
           " (R1 = " + R1 +")" +
           " (R2 = " + R2 +")" ;
	}

}