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mobius
216
trunk/java/com/l2jserver/gameserver/cache/HtmCache.java
vendored
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216
trunk/java/com/l2jserver/gameserver/cache/HtmCache.java
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/*
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* Copyright (C) 2004-2014 L2J Server
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*
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* This file is part of L2J Server.
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*
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* L2J Server is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* L2J Server is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.l2jserver.gameserver.cache;
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import java.io.BufferedInputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import com.l2jserver.Config;
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import com.l2jserver.gameserver.util.Util;
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import com.l2jserver.util.file.filter.HTMLFilter;
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/**
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* @author Layane
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*/
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public class HtmCache
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{
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private static final Logger _log = Logger.getLogger(HtmCache.class.getName());
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private static final HTMLFilter htmlFilter = new HTMLFilter();
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private static final Map<String, String> _cache = Config.LAZY_CACHE ? new ConcurrentHashMap<>() : new HashMap<>();
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private int _loadedFiles;
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private long _bytesBuffLen;
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protected HtmCache()
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{
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reload();
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}
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public void reload()
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{
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reload(Config.DATAPACK_ROOT);
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}
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public void reload(File f)
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{
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if (!Config.LAZY_CACHE)
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{
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_log.info("Html cache start...");
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parseDir(f);
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_log.info("Cache[HTML]: " + String.format("%.3f", getMemoryUsage()) + " megabytes on " + getLoadedFiles() + " files loaded");
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}
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else
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{
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_cache.clear();
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_loadedFiles = 0;
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_bytesBuffLen = 0;
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_log.info("Cache[HTML]: Running lazy cache");
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}
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}
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public void reloadPath(File f)
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{
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parseDir(f);
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_log.info("Cache[HTML]: Reloaded specified path.");
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}
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public double getMemoryUsage()
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{
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return ((float) _bytesBuffLen / 1048576);
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}
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public int getLoadedFiles()
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{
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return _loadedFiles;
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}
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private void parseDir(File dir)
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{
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final File[] files = dir.listFiles();
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for (File file : files)
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{
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if (!file.isDirectory())
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{
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loadFile(file);
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}
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else
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{
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parseDir(file);
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}
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}
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}
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public String loadFile(File file)
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{
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if (!htmlFilter.accept(file))
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{
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return null;
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}
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final String relpath = Util.getRelativePath(Config.DATAPACK_ROOT, file);
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String content = null;
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try (FileInputStream fis = new FileInputStream(file);
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BufferedInputStream bis = new BufferedInputStream(fis))
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{
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final int bytes = bis.available();
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byte[] raw = new byte[bytes];
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bis.read(raw);
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content = new String(raw, "UTF-8");
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content = content.replaceAll("(?s)<!--.*?-->", ""); // Remove html comments
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String oldContent = _cache.put(relpath, content);
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if (oldContent == null)
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{
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_bytesBuffLen += bytes;
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_loadedFiles++;
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}
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else
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{
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_bytesBuffLen = (_bytesBuffLen - oldContent.length()) + bytes;
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}
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}
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catch (Exception e)
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{
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_log.log(Level.WARNING, "Problem with htm file " + e.getMessage(), e);
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}
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return content;
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}
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public String getHtmForce(String prefix, String path)
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{
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String content = getHtm(prefix, path);
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if (content == null)
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{
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content = "<html><body>My text is missing:<br>" + path + "</body></html>";
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_log.warning("Cache[HTML]: Missing HTML page: " + path);
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}
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return content;
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}
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public String getHtm(String prefix, String path)
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{
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String newPath = null;
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String content;
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if ((prefix != null) && !prefix.isEmpty())
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{
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newPath = prefix + path;
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content = getHtm(newPath);
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if (content != null)
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{
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return content;
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}
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}
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content = getHtm(path);
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if ((content != null) && (newPath != null))
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{
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_cache.put(newPath, content);
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}
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return content;
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}
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private String getHtm(String path)
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{
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if ((path == null) || path.isEmpty())
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{
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return ""; // avoid possible NPE
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}
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String content = _cache.get(path);
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if (Config.LAZY_CACHE && (content == null))
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{
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content = loadFile(new File(Config.DATAPACK_ROOT, path));
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}
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return content;
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}
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public boolean contains(String path)
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{
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return _cache.containsKey(path);
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}
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/**
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* @param path The path to the HTM
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* @return {@code true} if the path targets a HTM or HTML file, {@code false} otherwise.
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*/
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public boolean isLoadable(String path)
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{
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return htmlFilter.accept(new File(Config.DATAPACK_ROOT, path));
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}
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public static HtmCache getInstance()
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{
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return SingletonHolder._instance;
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}
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private static class SingletonHolder
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{
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protected static final HtmCache _instance = new HtmCache();
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}
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}
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