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The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.

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/*
 *  ====================================================================
 *    Licensed to the Apache Software Foundation (ASF) under one or more
 *    contributor license agreements.  See the NOTICE file distributed with
 *    this work for additional information regarding copyright ownership.
 *    The ASF licenses this file to You under the Apache License, Version 2.0
 *    (the "License"); you may not use this file except in compliance with
 *    the License.  You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 * ====================================================================
 */

package org.apache.poi.sl.draw.geom;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.poi.sl.draw.binding.CTCustomGeometry2D;
import org.apache.poi.sl.draw.binding.CTGeomGuide;
import org.apache.poi.sl.draw.binding.CTGeomGuideList;
import org.apache.poi.sl.draw.binding.CTGeomRect;
import org.apache.poi.sl.draw.binding.CTPath2D;
import org.apache.poi.sl.draw.binding.CTPath2DList;

/**
 * Definition of a custom geometric shape
 */
public class CustomGeometry implements Iterable{
    final List adjusts = new ArrayList<>();
    final List guides = new ArrayList<>();
    final List paths = new ArrayList<>();
    Path textBounds;

    public CustomGeometry(CTCustomGeometry2D geom) {
        CTGeomGuideList avLst = geom.getAvLst();
        if(avLst != null) {
            for(CTGeomGuide gd : avLst.getGd()){
                adjusts.add(new AdjustValue(gd));
            }
        }

        CTGeomGuideList gdLst = geom.getGdLst();
        if(gdLst != null) {
            for(CTGeomGuide gd : gdLst.getGd()){
                guides.add(new Guide(gd));
            }
        }

        CTPath2DList pathLst = geom.getPathLst();
        if(pathLst != null) {
            for(CTPath2D spPath : pathLst.getPath()){
                paths.add(new Path(spPath));
            }
        }

        CTGeomRect rect = geom.getRect();
        if(rect != null) {
            textBounds = new Path();
            textBounds.addCommand(new MoveToCommand(rect.getL(), rect.getT()));
            textBounds.addCommand(new LineToCommand(rect.getR(), rect.getT()));
            textBounds.addCommand(new LineToCommand(rect.getR(), rect.getB()));
            textBounds.addCommand(new LineToCommand(rect.getL(), rect.getB()));
            textBounds.addCommand(new ClosePathCommand());
        }
    }

    @Override
    public Iterator iterator() {
        return paths.iterator();
    }

    public Path getTextBounds(){
        return textBounds;
    }
}