+
−/*
+
− * 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 - 2019 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
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− * package.
+
− *
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− * @author Ying Zhang "Y.Zhang@cwi.nl"
+
− * @version 0.1
+
− */
+
−
+
−public class Extract {
+
−	private static final int DEFAULT_BUFSIZE = 16386;
+
−
+
−    public Extract() {}
+
−
+
−    /**
+
−     * Extracts a file from the Jar package which includes this class to
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−     * the given destination
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−     * @param fromFile The file to extract, including it absolute path
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−     * inside its including Jar package.
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−     * @param toFile Destination for the extracted file
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−     * @throws FileNotFoundException If the file to extract can not be
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−     * found in its including Jar package.
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−     * @throws IOException If any error happens during
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−     * creating/reading/writing files.
+
−     */
+
−	public static void extractFile(String fromFile, String toFile)
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−		throws FileNotFoundException, IOException
+
−	{
+
−		char[] cbuf = new char[DEFAULT_BUFSIZE];
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−		int ret = 0;
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−
+
−		InputStream is = new Extract().getClass().getResourceAsStream(fromFile);
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−
+
−		if(is == null) {
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−			throw new FileNotFoundException("File " + fromFile +
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−					" does not exist in the JAR package.");
+
−		}
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−
+
−		BufferedReader reader = new BufferedReader(new InputStreamReader(is));
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−		FileWriter writer = new FileWriter(toFile, false);
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−
+
−		ret = reader.read(cbuf, 0, DEFAULT_BUFSIZE);
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−		while(ret > 0){
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−			writer.write(cbuf, 0, ret);
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−			ret = reader.read(cbuf, 0, DEFAULT_BUFSIZE);
+
−		}
+
−		reader.close();
+
−		writer.close();
+
−	}
+
−}