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package org.monte.media.iff;

import java.util.*;

public class IFFChunk {
    private int id;
    private int type;
    private long size;
    private long scan;
    private byte[] data;
    private Hashtable propertyChunks;
    private Vector collectionChunks;

    public IFFChunk(int type, int id) {
        this.id = id;
        this.type = type;
        this.size = -1;
        this.scan = -1;
    }
    public IFFChunk(int type, int id, long size, long scan) {
        this.id = id;
        this.type = type;
        this.size = size;
        this.scan = scan;
    }
    @SuppressWarnings("unchecked")
    public IFFChunk(int type, int id, long size, long scan, IFFChunk propGroup) {
        this.id = id;
        this.type = type;
        this.size = size;
        this.scan = scan;
        if (propGroup != null) {
            if (propGroup.propertyChunks != null) {
                propertyChunks = (Hashtable)propGroup.propertyChunks.clone(); }
            if (propGroup.collectionChunks != null) {
                collectionChunks = (Vector)propGroup.collectionChunks.clone(); }
        }
    }


    public int getID() {
        return id; }


    public int getType() {
        return type; }


    public long getSize() {
        return size; }


    public long getScan() {
        return scan; }

    public void putPropertyChunk(IFFChunk chunk) {
        if (propertyChunks == null) {
            propertyChunks = new Hashtable(); }
        propertyChunks.put(chunk,chunk);
    }
    public IFFChunk getPropertyChunk(int id) {
        if (propertyChunks == null) {
            return null; }
        IFFChunk chunk = new IFFChunk(type, id);
        return (IFFChunk)propertyChunks.get(chunk);
    }
    public Enumeration propertyChunks() {
        if (propertyChunks == null) {
            propertyChunks = new Hashtable(); }
        return propertyChunks.keys();
    }
    public void addCollectionChunk(IFFChunk chunk) {
        if (collectionChunks == null) {
            collectionChunks = new Vector(); }
        collectionChunks.addElement(chunk);
    }
    public IFFChunk[] getCollectionChunks(int id) {
        if (collectionChunks == null) {
            return new IFFChunk[0]; }
        Enumeration enm = collectionChunks.elements();
        int i = 0;
        while ( enm.hasMoreElements() ) {
            IFFChunk chunk = (IFFChunk)enm.nextElement();
            if (chunk.id == id) {
                i++; }
        }
        IFFChunk[] array = new IFFChunk[i];
        i = 0;
        enm = collectionChunks.elements();
        while ( enm.hasMoreElements() ) {
            IFFChunk chunk = (IFFChunk)enm.nextElement();
            if (chunk.id == id) {
                array[i++] = chunk; }
        }
        return array;
    }
    public Enumeration collectionChunks() {
        if (collectionChunks == null) {
            collectionChunks = new Vector(); }
        return collectionChunks.elements();
    }


    public void setData(byte[] data) {
        this.data = data; }

    public byte[] getData() {
        return data; }

    @Override
    public boolean equals(Object another) {
        if (another instanceof IFFChunk) {
            IFFChunk that = (IFFChunk) another;
            return (that.id == this.id && that.type == this.type);
        }
        return false;
    }

    @Override
    public int hashCode() {
        return id; }

    @Override
    public String toString() {
        return super.toString()+"{"+IFFParser.idToString(getType())+","+IFFParser.idToString(getID())+"}";
    }
}