+
−/*
+
− * This Source Code Form is subject to the terms of the Mozilla Public
+
− * License, v. 2.0.  If a copy of the MPL was not distributed with this
+
− * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
− *
+
− * Copyright 1997 - July 2008 CWI, August 2008 - 2017 MonetDB B.V.
+
− */
+
−
+
−package nl.cwi.monetdb.util;
+
−
+
−import java.io.BufferedReader;
+
−import java.io.FileNotFoundException;
+
−import java.io.FileWriter;
+
−import java.io.IOException;
+
−import java.io.InputStream;
+
−import java.io.InputStreamReader;
+
−
+
−
+
−/**
+
− * This file contains a function to extract files from its including Jar package.
+
− *
+
− * @author Ying Zhang <Y.Zhang@cwi.nl>
+
− * @version 0.1
+
− */
+
−
+
−public class Extract {
+
−	private static final int DEFAULT_BUFSIZE = 16386;
+
−
+
−    /**
+
−     * Extracts a file from the Jar package which includes this class to the given destination
+
−     * @param fromFile The file to extract, including it absolute path inside its including Jar package.
+
−     * @param toFile Destination for the extracted file
+
−     * @throws FileNotFoundException If the file to extract can not be
+
−     * found in its including Jar package.
+
−     * @throws IOException If any error happens during creating/reading/writing files.
+
−     */
+
−	public static void extractFile(String fromFile, String toFile) throws FileNotFoundException, IOException {
+
−		char[] cbuf = new char[DEFAULT_BUFSIZE];
+
−		int ret;
+
−
+
−		InputStream is = Extract.class.getResourceAsStream(fromFile);
+
−
+
−		if(is == null) {
+
−			throw new FileNotFoundException("File " + fromFile + " does not exist in the JAR package.");
+
−		}
+
−
+
−		BufferedReader reader = new BufferedReader(new InputStreamReader(is));
+
−		FileWriter writer = new FileWriter(toFile, false);
+
−
+
−		ret = reader.read(cbuf, 0, DEFAULT_BUFSIZE);
+
−		while(ret > 0){
+
−			writer.write(cbuf, 0, ret);
+
−			ret = reader.read(cbuf, 0, DEFAULT_BUFSIZE);
+
−		}
+
−		reader.close();
+
−		writer.close();
+
−	}
+
−}