/*
* File : CategoryManagerImpl.java
* Created : 09 feb. 2004
* By : TuxPaper
*
* Azureus - a Java Bittorrent client
*
* 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.
*
* 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 ( see the LICENSE file ).
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.gudy.azureus2.core3.category.impl;
import java.util.Map;
import java.util.Iterator;
import java.util.HashMap;
import java.util.ArrayList;
import java.util.List;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.UnsupportedEncodingException;
import org.gudy.azureus2.core3.category.*;
import org.gudy.azureus2.core3.util.*;
public class CategoryManagerImpl {
private static CategoryManagerImpl catMan;
private static Category catAll = null;
private static Category catUncategorized = null;
private static boolean doneLoading = false;
private static AEMonitor class_mon = new AEMonitor( "CategoryManager:class" );
private Map categories = new HashMap();
private AEMonitor categories_mon = new AEMonitor( "Categories" );
private static final int LDT_CATEGORY_ADDED = 1;
private static final int LDT_CATEGORY_REMOVED = 2;
private ListenerManager category_listeners = ListenerManager.createManager(
"CatListenDispatcher",
new ListenerManagerDispatcher()
{
public void
dispatch(Object _listener,
int type,
Object value )
{
CategoryManagerListener target = (CategoryManagerListener)_listener;
if ( type == LDT_CATEGORY_ADDED )
target.categoryAdded((Category)value);
else if ( type == LDT_CATEGORY_REMOVED )
target.categoryRemoved((Category)value);
}
});
protected
CategoryManagerImpl()
{
loadCategories();
}
public void addCategoryManagerListener(CategoryManagerListener l) {
category_listeners.addListener( l );
}
public void removeCategoryManagerListener(CategoryManagerListener l) {
category_listeners.removeListener( l );
}
public static CategoryManagerImpl getInstance() {
try{
class_mon.enter();
if (catMan == null)
catMan = new CategoryManagerImpl();
return catMan;
}finally{
class_mon.exit();
}
}
protected void loadCategories() {
if (doneLoading)
return;
doneLoading = true;
FileInputStream fin = null;
BufferedInputStream bin = null;
makeSpecialCategories();
try {
//open the file
File configFile = FileUtil.getUserFile("categories.config");
fin = new FileInputStream(configFile);
bin = new BufferedInputStream(fin, 8192);
Map map = BDecoder.decode(bin);
List catList = (List) map.get("categories");
for (int i = 0; i < catList.size(); i++) {
Map mCategory = (Map) catList.get(i);
try {
String catName = new String((byte[]) mCategory.get("name"), Constants.DEFAULT_ENCODING);
Long l_maxup = (Long)mCategory.get( "maxup" );
Long l_maxdown = (Long)mCategory.get( "maxdown" );
categories.put(
catName,
new CategoryImpl(
catName,
l_maxup==null?0:l_maxup.intValue(),
l_maxdown==null?0:l_maxdown.intValue()));
}
catch (UnsupportedEncodingException e1) {
//Do nothing and process next.
}
}
}
catch (FileNotFoundException e) {
//Do nothing
}
catch (Exception e) {
Debug.printStackTrace( e );
}
finally {
try {
if (bin != null)
bin.close();
}
catch (Exception e) {}
try {
if (fin != null)
fin.close();
}
catch (Exception e) {}
}
}
public void saveCategories() {
try{
categories_mon.enter();
Map map = new HashMap();
List list = new ArrayList(categories.size());
Iterator iter = categories.values().iterator();
while (iter.hasNext()) {
Category cat = (Category) iter.next();
// For now we are only putting in 1 thing. Maybe more later, so we use a map
if (cat.getType() == Category.TYPE_USER) {
Map catMap = new HashMap();
catMap.put( "name", cat.getName());
catMap.put( "maxup", new Long(cat.getUploadSpeed()));
catMap.put( "maxdown", new Long(cat.getUploadSpeed()));
list.add(catMap);
}
}
map.put("categories", list);
FileOutputStream fos = null;
try {
//encode the data
byte[] torrentData = BEncoder.encode(map);
File oldFile = FileUtil.getUserFile("categories.config");
File newFile = FileUtil.getUserFile("categories.config.new");
//write the data out
fos = new FileOutputStream(newFile);
fos.write(torrentData);
fos.flush();
fos.getFD().sync();
//close the output stream
fos.close();
fos = null;
//delete the old file
if ( !oldFile.exists() || oldFile.delete() ) {
//rename the new one
newFile.renameTo(oldFile);
}
}
catch (Exception e) {
Debug.printStackTrace( e );
}
finally {
try {
if (fos != null)
fos.close();
}
catch (Exception e) {}
}
}finally{
categories_mon.exit();
}
}
public Category createCategory(String name) {
makeSpecialCategories();
Category newCategory = getCategory(name);
if (newCategory == null) {
newCategory = new CategoryImpl(name, 0, 0);
categories.put(name, newCategory);
saveCategories();
category_listeners.dispatch( LDT_CATEGORY_ADDED, newCategory );
return (Category)categories.get(name);
}
return newCategory;
}
public void removeCategory(Category category) {
if (categories.containsKey(category.getName())) {
categories.remove(category.getName());
saveCategories();
category_listeners.dispatch( LDT_CATEGORY_REMOVED, category );
}
}
public Category[] getCategories() {
if (categories.size() > 0)
return (Category[])categories.values().toArray(new Category[categories.size()]);
return (new Category[0]);
}
public Category getCategory(String name) {
return (Category)categories.get(name);
}
public Category getCategory(int type) {
if (type == Category.TYPE_ALL)
return catAll;
if (type == Category.TYPE_UNCATEGORIZED)
return catUncategorized;
return null;
}
private void makeSpecialCategories() {
if (catAll == null) {
catAll = new CategoryImpl("Categories.all", Category.TYPE_ALL);
categories.put("Categories.all", catAll);
}
if (catUncategorized == null) {
catUncategorized = new CategoryImpl("Categories.uncategorized", Category.TYPE_UNCATEGORIZED);
categories.put("Categories.uncategorized", catUncategorized);
}
}
}
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