/*
* 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 3 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, see .
*/
package com.l2jserver.gameserver.cache;
import gnu.trove.map.hash.TIntObjectHashMap;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.l2jserver.Config;
import com.l2jserver.gameserver.util.L2TIntObjectHashMap;
import com.l2jserver.gameserver.util.Util;
/**
* @author Layane
*
*/
public class HtmCache
{
private static Logger _log = Logger.getLogger(HtmCache.class.getName());
private final TIntObjectHashMap _cache;
private int _loadedFiles;
private long _bytesBuffLen;
public static HtmCache getInstance()
{
return SingletonHolder._instance;
}
private HtmCache()
{
if (Config.LAZY_CACHE)
_cache = new L2TIntObjectHashMap();
else
_cache = new TIntObjectHashMap();
reload();
}
public void reload()
{
reload(Config.DATAPACK_ROOT);
}
public void reload(File f)
{
if (!Config.LAZY_CACHE)
{
_log.info("Html cache start...");
parseDir(f);
_log.info("Cache[HTML]: " + String.format("%.3f", getMemoryUsage()) + " megabytes on " + getLoadedFiles() + " files loaded");
}
else
{
_cache.clear();
_loadedFiles = 0;
_bytesBuffLen = 0;
_log.info("Cache[HTML]: Running lazy cache");
}
}
public void reloadPath(File f)
{
parseDir(f);
_log.info("Cache[HTML]: Reloaded specified path.");
}
public double getMemoryUsage()
{
return ((float) _bytesBuffLen / 1048576);
}
public int getLoadedFiles()
{
return _loadedFiles;
}
private static class HtmFilter implements FileFilter
{
@Override
public boolean accept(File file)
{
if (!file.isDirectory())
{
return (file.getName().endsWith(".htm") || file.getName().endsWith(".html"));
}
return true;
}
}
private void parseDir(File dir)
{
FileFilter filter = new HtmFilter();
File[] files = dir.listFiles(filter);
for (File file : files)
{
if (!file.isDirectory())
loadFile(file);
else
parseDir(file);
}
}
public String loadFile(File file)
{
final String relpath = Util.getRelativePath(Config.DATAPACK_ROOT, file);
final int hashcode = relpath.hashCode();
final HtmFilter filter = new HtmFilter();
if (file.exists() && filter.accept(file) && !file.isDirectory())
{
String content;
FileInputStream fis = null;
try
{
fis = new FileInputStream(file);
BufferedInputStream bis = new BufferedInputStream(fis);
int bytes = bis.available();
byte[] raw = new byte[bytes];
bis.read(raw);
content = new String(raw, "UTF-8");
content = content.replaceAll("\r\n", "\n");
String oldContent = _cache.get(hashcode);
if (oldContent == null)
{
_bytesBuffLen += bytes;
_loadedFiles++;
}
else
{
_bytesBuffLen = _bytesBuffLen - oldContent.length() + bytes;
}
_cache.put(hashcode, content);
return content;
}
catch (Exception e)
{
_log.log(Level.WARNING, "Problem with htm file " + e.getMessage(), e);
}
finally
{
try
{
fis.close();
}
catch (Exception e1)
{
}
}
}
return null;
}
public String getHtmForce(String prefix, String path)
{
String content = getHtm(prefix, path);
if (content == null)
{
content = "My text is missing:
" + path + "";
_log.warning("Cache[HTML]: Missing HTML page: " + path);
}
return content;
}
public String getHtm(String prefix, String path)
{
String newPath = null;
String content;
if (prefix != null && !prefix.isEmpty())
{
newPath = prefix + path;
content = getHtm(newPath);
if (content != null)
return content;
}
content = getHtm(path);
if (content != null && newPath != null)
_cache.put(newPath.hashCode(), content);
return content;
}
private String getHtm(String path)
{
if (path == null || path.isEmpty())
return ""; // avoid possible NPE
final int hashCode = path.hashCode();
String content = _cache.get(hashCode);
if (Config.LAZY_CACHE && content == null)
content = loadFile(new File(Config.DATAPACK_ROOT, path));
return content;
}
public boolean contains(String path)
{
return _cache.containsKey(path.hashCode());
}
/**
* Check if an HTM exists and can be loaded
* @param path The path to the HTM
* @return
* */
public boolean isLoadable(String path)
{
File file = new File(path);
HtmFilter filter = new HtmFilter();
if (file.exists() && filter.accept(file) && !file.isDirectory())
return true;
return false;
}
@SuppressWarnings("synthetic-access")
private static class SingletonHolder
{
protected static final HtmCache _instance = new HtmCache();
}
}