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https://git.huckle.dev/Huckles-Minecraft-Archive/jpexs-decompiler.git
synced 2026-06-12 17:52:01 +00:00
Separated FFDec core library and the rest (GUI).
FFDec Library is now LGPLv3, others stay GPLv3. Version changed to 3.0.0 for FFDec, 1.0.0 for FFDec Library.
This commit is contained in:
181
libsrc/ffdec_lib/src/com/jpexs/helpers/Cache.java
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181
libsrc/ffdec_lib/src/com/jpexs/helpers/Cache.java
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/*
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* Copyright (C) 2010-2014 JPEXS, All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3.0 of the License, or (at your option) any later version.
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*
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* This library 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library.
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*/
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package com.jpexs.helpers;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.io.Serializable;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.WeakHashMap;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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/**
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*
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* @author JPEXS
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* @param <E>
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*/
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public class Cache<E> {
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private final Map<Object, File> cacheFiles;
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private final Map<Object, E> cacheMemory;
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private static final List<Cache> instances = new ArrayList<>();
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public static final int STORAGE_FILES = 1;
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public static final int STORAGE_MEMORY = 2;
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public static <E> Cache<E> getInstance(boolean weak) {
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Cache<E> instance = new Cache<>(weak);
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instances.add(instance);
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return instance;
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}
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private static int storageType = STORAGE_FILES;
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public static void clearAll() {
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for (Cache c : instances) {
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c.clear();
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}
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}
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public static void setStorageType(int storageType) {
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if (storageType == Cache.storageType) {
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return;
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}
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switch (storageType) {
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case STORAGE_FILES:
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case STORAGE_MEMORY:
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break;
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default:
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throw new IllegalArgumentException("storageType must be one of STORAGE_FILES or STORAGE_MEMORY");
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}
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if (storageType != Cache.storageType) {
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clearAll();
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}
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Cache.storageType = storageType;
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}
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public static int getStorageType() {
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return storageType;
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}
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private Cache(boolean weak) {
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if (weak) {
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cacheFiles = new WeakHashMap<>();
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cacheMemory = new WeakHashMap<>();
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} else {
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cacheFiles = new HashMap<>();
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cacheMemory = new HashMap<>();
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}
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}
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public boolean contains(Object key) {
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if (storageType == STORAGE_FILES) {
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return cacheFiles.containsKey(key);
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} else if (storageType == STORAGE_MEMORY) {
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return cacheMemory.containsKey(key);
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}
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return false;
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}
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public void clear() {
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cacheMemory.clear();
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for (File f : cacheFiles.values()) {
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f.delete();
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}
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cacheFiles.clear();
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}
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public void remove(Object key) {
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if (storageType == STORAGE_FILES) {
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if (cacheFiles.containsKey(key)) {
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File f = cacheFiles.get(key);
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f.delete();
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cacheFiles.remove(key);
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}
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} else if (storageType == STORAGE_MEMORY) {
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if (cacheMemory.containsKey(key)) {
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cacheMemory.remove(key);
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}
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}
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}
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public E get(Object key) {
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if (storageType == STORAGE_FILES) {
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if (!cacheFiles.containsKey(key)) {
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return null;
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}
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File f = cacheFiles.get(key);
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try (FileInputStream fis = new FileInputStream(f)) {
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ObjectInputStream ois = new ObjectInputStream(fis);
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@SuppressWarnings("unchecked")
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E item = (E) ois.readObject();
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return item;
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} catch (IOException | ClassNotFoundException ex) {
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Logger.getLogger(Helper.class.getName()).log(Level.SEVERE, null, ex);
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}
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return null;
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} else if (storageType == STORAGE_MEMORY) {
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if (cacheMemory.containsKey(key)) {
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return cacheMemory.get(key);
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}
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return null;
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}
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return null;
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}
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public void put(Object key, E value) {
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if (storageType == STORAGE_FILES) {
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File temp = null;
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try {
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temp = File.createTempFile("ffdec_cache", ".tmp");
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} catch (IOException ex) {
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Logger.getLogger(Cache.class
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.getName()).log(Level.SEVERE, null, ex);
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return;
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}
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try {
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temp.deleteOnExit();
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} catch (IllegalStateException iex) {
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return;
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}
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try (ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(temp))) {
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if (value instanceof Serializable) {
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oos.writeObject(value);
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} else {
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// Object serialization not supported
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return;
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}
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oos.flush();
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cacheFiles.put(key, temp);
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} catch (IOException ex) {
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//ignore
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}
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} else if (storageType == STORAGE_MEMORY) {
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cacheMemory.put(key, value);
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}
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}
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