/*
* JMule - Java file sharing client
* Copyright (C) 2007-2008 JMule team ( jmule@jmule.org / http://jmule.org )
*
* Any parts of this program derived from other projects, or contributed
* by third-party developers are copyrighted by their respective authors.
*
* This program 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 2
* of the License, or (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
package org.jmule.core.edonkey.packet.tag;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import org.jmule.core.utils.Misc;
/**
*
* @author binary256
* @version $$Revision: 1.8 $$
* Last changed by $$Author: binary255 $$ on $$Date: 2009/09/17 17:52:59 $$
*/
public class TagList implements Iterable<Tag> {
public final static TagList EMPTY_TAG_LIST;
static {
EMPTY_TAG_LIST = new TagList();
}
private List<Tag> tagList = new CopyOnWriteArrayList<Tag>();
public TagList() {
}
public TagList(List<Tag> list) {
this.addTag(list,true);
}
public Iterator<Tag> iterator() {
return tagList.iterator();
}
public boolean hasTag(byte[] tagName) {
for(Tag tag : tagList)
if (Arrays.equals(tag.getTagName(), tagName))
return true;
return false;
}
public void addTag(Tag tag) {
if (hasTag(tag.getTagName())) return;
tagList.add(tag);
}
public void addTag(Tag tag, boolean removeIfExist) {
if (hasTag(tag.getTagName()))
removeTag(tag.getTagName());
tagList.add(tag);
}
public void addTag(Iterable<Tag> tagList, boolean removeIfExist) {
for(Tag tag : tagList) {
if (hasTag(tag.getTagName()))
removeTag(tag.getTagName());
addTag(tag);
}
}
public List<Tag> getAsList() {
return tagList;
}
public int size() {
return tagList.size();
}
public void removeTag(List<byte[]> tags) {
for(byte[] tag : tags)
removeTag(tag);
}
public void removeTag(byte[] tagName) {
Tag remove = null;
for(Tag tag : tagList)
if (Arrays.equals(tag.getTagName(), tagName))
remove = tag;
if (remove == null) return;
tagList.remove(remove);
}
public Tag getTag(byte[] tagName) {
for(Tag tag : tagList)
if (Arrays.equals(tag.getTagName(), tagName))
return tag;
return null;
}
public String toString() {
String result ="";
for(Tag tag : tagList) {
result += tag + "\n";
}
return result;
}
public int getByteSize() {
int result = 0;
for(Tag tag : tagList)
result += tag.getSize();
return result;
}
public ByteBuffer getAsByteBuffer() {
ByteBuffer result = Misc.getByteBuffer(getByteSize());
for(Tag tag : tagList) {
ByteBuffer b = tag.getAsByteBuffer();
b.position(0);
result.put(b);
}
result.position(0);
return result;
}
}