package org.jtheque.primary.utils.web.analyzers.generic.transform;

 /*

  * This file is part of JTheque.

  *            

  * JTheque is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License. 

  *

  * JTheque is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with JTheque.  If not, see <http://www.gnu.org/licenses/>.

  */

 import org.jdom.Element;

 import org.jtheque.core.utils.file.XMLException;

 import org.jtheque.core.utils.file.XMLReader;

 import org.jtheque.primary.utils.web.analyzers.generic.Factory;

 import org.jtheque.primary.utils.web.analyzers.generic.value.ValueGetter;

 import org.jtheque.primary.utils.web.analyzers.generic.value.ValueGetterFactory;

 import org.jtheque.utils.StringUtils;

 /**

  * @author Baptiste Wicht

  */

 final class SplitterFactory implements Factory<Transformer> {

         @Override

         public boolean canFactor(Element element, XMLReader reader){

                 return "splitter".equals(element.getName());

         }

         @Override

         public Transformer factor(Element n, XMLReader reader) throws XMLException{

                 Splitter splitter = new Splitter();

                 splitter.setSplitter(reader.readString("split", n));

                 splitter.setSplitReplace(reader.readString("new", n));

                 splitter.setGetter(ValueGetterFactory.getValueGetter(n, reader));

                 return splitter;

         }

         /**

          * A Transformer who split the value and rebuild the value in a different String.

          *

          * @author Baptiste Wicht

          */

         private static final class Splitter implements Transformer {

                 private String splitter;

                 private String splitReplace;

                 private ValueGetter getter;

                 @Override

                 public String transform(String value){

                         if (!StringUtils.isEmpty(value)){

                                 StringBuilder builder = new StringBuilder(50);

                                 String[] temp = value.split(splitter);

                                 boolean first = true;

                                 for (String v : temp){

                                         if (StringUtils.isEmpty(v)){

                                                 continue;

                                         }

                                         String real = getter.getValue(v);

                                         if (first){

                                                 first = false;

                                         } else {

                                                 builder.append(splitReplace);

                                         }

                                         builder.append(real);

                                 }

                                 return builder.toString();

                         }

                         return value;

                 }

                 /**

                  * Set the String with which we split the value.

                  *

                  * @param splitter The split string.

                  */

                 public void setSplitter(String splitter){

                         this.splitter = splitter;

                 }

                 /**

                  * Set the new separator.

                  *

                  * @param splitReplace The new separator.

                  */

                 public void setSplitReplace(String splitReplace){

                         this.splitReplace = splitReplace;

                 }

                 /**

                  * Set the ValueGetter to take the value.

                  *

                  * @param getter The value getter.

                  */

                 public void setGetter(ValueGetter getter){

                         this.getter = getter;

                 }

                 @Override

                 public String toString(){

                         return "Splitter{" +

                                         "splitter='" + splitter + '\'' +

                                         ", splitReplace='" + splitReplace + '\'' +

                                         ", getter=" + getter +

                                         '}';

                 }

         }

 }