/*
* This file is part of the L2J Mobius project.
*
* 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.l2jmobius.gameserver.cache;
import java.io.File;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import com.l2jmobius.Config;
import com.l2jmobius.commons.util.file.filter.HTMLFilter;
import com.l2jmobius.gameserver.util.Util;
/**
* @author Layane
*/
public class HtmCache
{
private static final Logger LOGGER = Logger.getLogger(HtmCache.class.getName());
private static final HTMLFilter HTML_FILTER = new HTMLFilter();
private static final Pattern EXTEND_PATTERN = Pattern.compile("(.*?)", Pattern.DOTALL);
private static final Pattern ABSTRACT_BLOCK_PATTERN = Pattern.compile("", Pattern.DOTALL);
private static final Pattern BLOCK_PATTERN = Pattern.compile("(.*?)", Pattern.DOTALL);
private final Map _cache = Config.LAZY_CACHE ? new ConcurrentHashMap<>() : new HashMap<>();
private int _loadedFiles;
private long _bytesBuffLen;
protected HtmCache()
{
reload();
}
public void reload()
{
reload(Config.DATAPACK_ROOT);
}
public void reload(File f)
{
if (!Config.LAZY_CACHE)
{
LOGGER.info("Html cache start...");
parseDir(f);
LOGGER.info("Cache[HTML]: " + String.format("%.3f", getMemoryUsage()) + " megabytes on " + getLoadedFiles() + " files loaded");
}
else
{
_cache.clear();
_loadedFiles = 0;
_bytesBuffLen = 0;
LOGGER.info("Cache[HTML]: Running lazy cache");
}
}
public void reloadPath(File f)
{
parseDir(f);
LOGGER.info("Cache[HTML]: Reloaded specified path.");
}
public double getMemoryUsage()
{
return (float) _bytesBuffLen / 1048576;
}
public int getLoadedFiles()
{
return _loadedFiles;
}
private void parseDir(File dir)
{
final File[] files = dir.listFiles();
if (files != null)
{
for (File file : files)
{
if (!file.isDirectory())
{
loadFile(file);
}
else
{
parseDir(file);
}
}
}
}
public String loadFile(File file)
{
if (HTML_FILTER.accept(file))
{
try
{
String content = processHtml(Util.readAllLines(file, StandardCharsets.UTF_8, null));
content = content.replaceAll("(?s)", ""); // Remove html comments
// content = content.replaceAll("\r", "").replaceAll("\n", ""); // Remove new lines
final String oldContent = _cache.put(file.toURI().getPath().substring(Config.DATAPACK_ROOT.toURI().getPath().length()), content);
if (oldContent == null)
{
_bytesBuffLen += content.length() * 2;
_loadedFiles++;
}
else
{
_bytesBuffLen = (_bytesBuffLen - oldContent.length()) + (content.length() * 2);
}
return content;
}
catch (Exception e)
{
LOGGER.log(Level.WARNING, "Problem with htm file:", e);
}
}
return null;
}
public String getHtmForce(String prefix, String path)
{
String content = getHtm(prefix, path);
if (content == null)
{
content = "My text is missing:
" + path + "";
LOGGER.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, content);
}
return content;
}
private String getHtm(String path)
{
// TODO: Check why some files do not get in cache on server startup.
return (path == null) || path.isEmpty() ? "" : _cache.get(path) == null ? loadFile(new File(Config.DATAPACK_ROOT, path)) : _cache.get(path);
}
public boolean contains(String path)
{
return _cache.containsKey(path);
}
/**
* @param path The path to the HTM
* @return {@code true} if the path targets a HTM or HTML file, {@code false} otherwise.
*/
public boolean isLoadable(String path)
{
return HTML_FILTER.accept(new File(Config.DATAPACK_ROOT, path));
}
private String parseTemplateName(String name)
{
if (!name.startsWith("data/"))
{
if (name.startsWith("html/"))
{
return "data/" + name;
}
else if (name.startsWith("CommunityBoard/"))
{
return "data/html/" + name;
}
else if (name.startsWith("scripts/"))
{
return "data/scripts/" + name;
}
}
return name;
}
private String processHtml(String result)
{
final Matcher extendMatcher = EXTEND_PATTERN.matcher(result);
if (extendMatcher.find())
{
// If extend matcher finds something, process template
final String templateName = parseTemplateName(extendMatcher.group(1));
// Generate block name -> content map
final Map blockMap = generateBlockMap(result);
// Attempt to find the template
String template = getHtm(templateName + "-template.htm");
if (template != null)
{
// Attempt to find the abstract blocks
final Matcher blockMatcher = ABSTRACT_BLOCK_PATTERN.matcher(template);
while (blockMatcher.find())
{
final String name = blockMatcher.group(1);
if (!blockMap.containsKey(name))
{
LOGGER.warning(getClass().getSimpleName() + ": Abstract block definition [" + name + "] is not implemented!");
continue;
}
// Replace the matched content with the block.
template = template.replace(blockMatcher.group(0), blockMap.get(name));
}
// Replace the entire extend block
result = result.replace(extendMatcher.group(0), template);
}
else
{
LOGGER.warning(getClass().getSimpleName() + ": Missing template: " + templateName + "-template.htm !");
}
}
return result;
}
private Map generateBlockMap(String data)
{
final Map blockMap = new LinkedHashMap<>();
final Matcher blockMatcher = BLOCK_PATTERN.matcher(data);
while (blockMatcher.find())
{
final String name = blockMatcher.group(1);
final String content = blockMatcher.group(2);
blockMap.put(name, content);
}
return blockMap;
}
public static HtmCache getInstance()
{
return SingletonHolder._instance;
}
private static class SingletonHolder
{
protected static final HtmCache _instance = new HtmCache();
}
}