77 lines
2.6 KiB
Java
77 lines
2.6 KiB
Java
/*
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* This file is part of BlueMap, licensed under the MIT License (MIT).
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*
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* Copyright (c) Blue (Lukas Rieger) <https://bluecolored.de>
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* Copyright (c) contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package de.bluecolored.bluemap.core.util;
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import java.io.File;
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import java.nio.file.Path;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.concurrent.TimeUnit;
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import com.flowpowered.math.vector.Vector2i;
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public class FileUtil {
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private FileUtil(){}
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public static File coordsToFile(Path root, Vector2i coords, String fileType){
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String path = "x" + coords.getX() + "z" + coords.getY();
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char[] cs = path.toCharArray();
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List<String> folders = new ArrayList<>();
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String folder = "";
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for (char c : cs){
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folder += c;
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if (c >= '0' && c <= '9'){
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folders.add(folder);
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folder = "";
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}
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}
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String fileName = folders.remove(folders.size() - 1);
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Path p = root;
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for (String s : folders){
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p = p.resolve(s);
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}
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return p.resolve(fileName + "." + fileType).toFile();
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}
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/**
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* Blocks until a file can be read and written.<br>
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* <i>(Do not use this method to sync file-access from different threads!)</i>
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*/
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public static void waitForFile(File file, long time, TimeUnit unit) throws InterruptedException {
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long start = System.currentTimeMillis();
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long timeout = start + TimeUnit.MILLISECONDS.convert(time, unit);
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long sleepTime = 1;
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while(!file.canWrite() || !file.canRead()){
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Thread.sleep(sleepTime);
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sleepTime = (long) Math.min(Math.ceil(sleepTime * 1.5), 1000);
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if (System.currentTimeMillis() > timeout) throw new InterruptedException();
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}
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}
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}
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