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504 lines
19 KiB
504 lines
19 KiB
// serverFileUtils.java
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// -------------------------------------------
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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// last major change: 05.08.2004
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program 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
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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package de.anomic.server;
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import java.io.BufferedOutputStream;
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import java.io.BufferedReader;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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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.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.io.PrintWriter;
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import java.io.Reader;
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import java.io.Writer;
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import java.util.Comparator;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.Set;
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import java.util.StringTokenizer;
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import java.util.TreeSet;
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import java.util.zip.GZIPInputStream;
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import java.util.zip.GZIPOutputStream;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipOutputStream;
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import de.anomic.kelondro.kelondroRow;
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import de.anomic.kelondro.kelondroRowSet;
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import de.anomic.tools.nxTools;
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public final class serverFileUtils {
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private static final int DEFAULT_BUFFER_SIZE = 1024; // this is also the maximum chunk size
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public static long copy(InputStream source, OutputStream dest) throws IOException {
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return copy(source, dest, -1);
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}
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/**
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* Copies an InputStream to an OutputStream.
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* @param source InputStream
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* @param dest OutputStream
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* @param count the total amount of bytes to copy
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* @return Total number of bytes copied.
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*
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* @see #copy(InputStream source, File dest)
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* @see #copyRange(File source, OutputStream dest, int start)
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* @see #copy(File source, OutputStream dest)
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* @see #copy(File source, File dest)
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*/
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public static long copy(InputStream source, OutputStream dest, long count) throws IOException {
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byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
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int chunkSize = (int) ((count > 0) ? Math.min(count, DEFAULT_BUFFER_SIZE) : DEFAULT_BUFFER_SIZE);
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int c; long total = 0;
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while ((c = source.read(buffer, 0, chunkSize)) > 0) {
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dest.write(buffer, 0, c);
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dest.flush();
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total += c;
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if (count > 0) {
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chunkSize = (int) Math.min(count-total, DEFAULT_BUFFER_SIZE);
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if (chunkSize == 0) break;
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}
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}
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dest.flush();
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return total;
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}
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public static int copy(File source, String inputCharset, Writer dest) throws IOException {
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InputStream fis = null;
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try {
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fis = new FileInputStream(source);
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return copy(fis, dest, inputCharset);
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} finally {
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if (fis != null) try { fis.close(); } catch (Exception e) {}
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}
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}
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public static int copy(InputStream source, Writer dest, String inputCharset) throws IOException {
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InputStreamReader reader = new InputStreamReader(source,inputCharset);
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return copy(reader,dest);
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}
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public static int copy(String source, Writer dest) throws IOException {
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dest.write(source);
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dest.flush();
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return source.length();
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}
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public static int copy(Reader source, Writer dest) throws IOException {
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char[] buffer = new char[DEFAULT_BUFFER_SIZE];
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int count = 0;
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int n = 0;
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try {
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while (-1 != (n = source.read(buffer))) {
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dest.write(buffer, 0, n);
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count += n;
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}
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} catch (Exception e) {
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// an "sun.io.MalformedInputException: Missing byte-order mark" - exception may occur here
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throw new IOException(e.getMessage());
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}
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return count;
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}
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public static void copy(InputStream source, File dest) throws IOException {
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copy(source,dest,-1);
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}
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/**
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* Copies an InputStream to a File.
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* @param source InputStream
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* @param dest File
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* @param the amount of bytes to copy
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* @see #copy(InputStream source, OutputStream dest)
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* @see #copyRange(File source, OutputStream dest, int start)
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* @see #copy(File source, OutputStream dest)
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* @see #copy(File source, File dest)
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*/
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public static void copy(InputStream source, File dest, long count) throws IOException {
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FileOutputStream fos = null;
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try {
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fos = new FileOutputStream(dest);
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copy(source, fos, count);
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} finally {
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if (fos != null) try {fos.close();} catch (Exception e) {}
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}
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}
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/**
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* Copies a part of a File to an OutputStream.
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* @param source File
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* @param dest OutputStream
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* @param start Number of bytes to skip from the beginning of the File
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* @see #copy(InputStream source, OutputStream dest)
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* @see #copy(InputStream source, File dest)
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* @see #copy(File source, OutputStream dest)
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* @see #copy(File source, File dest)
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*/
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public static void copyRange(File source, OutputStream dest, int start) throws IOException {
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InputStream fis = null;
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try {
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fis = new FileInputStream(source);
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long skipped = fis.skip(start);
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if (skipped != start) throw new IllegalStateException("Unable to skip '" + start + "' bytes. Only '" + skipped + "' bytes skipped.");
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copy(fis, dest, -1);
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} finally {
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if (fis != null) try { fis.close(); } catch (Exception e) {}
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}
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}
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/**
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* Copies a File to an OutputStream.
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* @param source File
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* @param dest OutputStream
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* @see #copy(InputStream source, OutputStream dest)
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* @see #copy(InputStream source, File dest)
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* @see #copyRange(File source, OutputStream dest, int start)
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* @see #copy(File source, File dest)
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*/
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public static void copy(File source, OutputStream dest) throws IOException {
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InputStream fis = null;
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try {
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fis = new FileInputStream(source);
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copy(fis, dest, -1);
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} finally {
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if (fis != null) try { fis.close(); } catch (Exception e) {}
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}
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}
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/**
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* Copies a File to a File.
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* @param source File
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* @param dest File
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* @param count the amount of bytes to copy
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* @see #copy(InputStream source, OutputStream dest)
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* @see #copy(InputStream source, File dest)
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* @see #copyRange(File source, OutputStream dest, int start)
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* @see #copy(File source, OutputStream dest)
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*/
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public static void copy(File source, File dest) throws IOException {
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FileInputStream fis = null;
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FileOutputStream fos = null;
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try {
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fis = new FileInputStream(source);
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fos = new FileOutputStream(dest);
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copy(fis, fos, -1);
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} finally {
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if (fis != null) try {fis.close();} catch (Exception e) {}
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if (fos != null) try {fos.close();} catch (Exception e) {}
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}
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}
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public static void copy(byte[] source, OutputStream dest) throws IOException {
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dest.write(source, 0, source.length);
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dest.flush();
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}
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public static void copy(byte[] source, File dest) throws IOException {
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copy(new ByteArrayInputStream(source), dest);
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}
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public static byte[] read(InputStream source) throws IOException {
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return read(source,-1);
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}
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public static byte[] read(InputStream source, long count) throws IOException {
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ByteArrayOutputStream baos = (count > 0)
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? new ByteArrayOutputStream((int)count)
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: new ByteArrayOutputStream();
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copy(source, baos, count);
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baos.close();
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// convert Stream into array
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return baos.toByteArray();
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}
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public static byte[] read(File source) throws IOException {
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byte[] buffer = new byte[(int) source.length()];
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InputStream fis = null;
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try {
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fis = new FileInputStream(source);
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int p = 0, c;
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while ((c = fis.read(buffer, p, buffer.length - p)) > 0) p += c;
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} finally {
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if (fis != null) try { fis.close(); } catch (Exception e) {}
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}
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return buffer;
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}
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public static byte[] readAndZip(File source) throws IOException {
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ByteArrayOutputStream byteOut = null;
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GZIPOutputStream zipOut = null;
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try {
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byteOut = new ByteArrayOutputStream((int)(source.length()/2));
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zipOut = new GZIPOutputStream(byteOut);
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copy(source, zipOut);
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zipOut.close();
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return byteOut.toByteArray();
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} finally {
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if (zipOut != null) try { zipOut.close(); } catch (Exception e) {}
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if (byteOut != null) try { byteOut.close(); } catch (Exception e) {}
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}
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}
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public static void writeAndGZip(byte[] source, File dest) throws IOException {
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FileOutputStream fos = null;
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try {
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fos = new FileOutputStream(dest);
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writeAndGZip(source, fos);
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} finally {
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if (fos != null) try {fos.close();} catch (Exception e) {}
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}
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}
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public static void writeAndGZip(byte[] source, OutputStream dest) throws IOException {
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GZIPOutputStream zipOut = null;
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try {
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zipOut = new GZIPOutputStream(dest);
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copy(source, zipOut);
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zipOut.close();
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} finally {
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if (zipOut != null) try { zipOut.close(); } catch (Exception e) {}
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}
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}
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/**
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* This function determines if a byte array is gzip compressed and uncompress it
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* @param source properly gzip compressed byte array
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* @return uncompressed byte array
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* @throws IOException
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*/
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public static byte[] uncompressGZipArray(byte[] source) throws IOException {
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if (source == null) return null;
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// support of gzipped data (requested by roland)
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if ((source.length > 1) && (((source[1] << 8) | source[0]) == GZIPInputStream.GZIP_MAGIC)) {
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System.out.println("DEBUG: uncompressGZipArray - uncompressing source");
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try {
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ByteArrayInputStream byteInput = new ByteArrayInputStream(source);
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ByteArrayOutputStream byteOutput = new ByteArrayOutputStream();
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GZIPInputStream zippedContent = new GZIPInputStream(byteInput);
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byte[] data = new byte[1024];
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int read = 0;
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// reading gzip file and store it uncompressed
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while((read = zippedContent.read(data, 0, 1024)) != -1) {
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byteOutput.write(data, 0, read);
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}
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zippedContent.close();
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byteOutput.close();
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source = byteOutput.toByteArray();
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} catch (Exception e) {
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if (!e.getMessage().equals("Not in GZIP format")) {
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throw new IOException(e.getMessage());
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}
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}
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}
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return source;
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}
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public static HashSet<String> loadList(File file) {
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HashSet<String> set = new HashSet<String>();
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BufferedReader br = null;
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try {
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br = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
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String line;
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while ((line = br.readLine()) != null) {
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line = line.trim();
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if ((line.length() > 0) && (!(line.startsWith("#")))) set.add(line.trim().toLowerCase());
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}
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br.close();
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} catch (IOException e) {
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} finally {
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if (br != null) try { br.close(); } catch (Exception e) {}
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}
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return set;
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}
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public static Map<String, String> loadHashMap(File f) {
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// load props
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try {
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byte[] b = read(f);
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return nxTools.table(nxTools.strings(b));
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} catch (IOException e2) {
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System.err.println("ERROR: " + f.toString() + " not found in settings path");
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return null;
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}
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}
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public static void saveMap(File file, Map<String, String> props, String comment) throws IOException {
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PrintWriter pw = null;
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File tf = new File(file.toString() + "." + (System.currentTimeMillis() % 1000));
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pw = new PrintWriter(new BufferedOutputStream(new FileOutputStream(tf)));
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pw.println("# " + comment);
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Iterator<Map.Entry<String, String>> i = props.entrySet().iterator();
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String key, value;
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Map.Entry<String, String> entry;
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while (i.hasNext()) {
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entry = i.next();
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key = entry.getKey();
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value = entry.getValue().replaceAll("\n", "\\\\n");
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pw.println(key + "=" + value);
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}
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pw.println("# EOF");
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pw.close();
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file.delete();
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tf.renameTo(file);
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}
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public static Set<String> loadSet(File file, int chunksize, boolean tree) throws IOException {
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Set<String> set = (tree) ? (Set<String>) new TreeSet<String>() : (Set<String>) new HashSet<String>();
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byte[] b = read(file);
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for (int i = 0; (i + chunksize) <= b.length; i++) {
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set.add(new String(b, i, chunksize));
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}
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return set;
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}
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public static Set<String> loadSet(File file, String sep, boolean tree) throws IOException {
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Set<String> set = (tree) ? (Set<String>) new TreeSet<String>() : (Set<String>) new HashSet<String>();
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byte[] b = read(file);
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StringTokenizer st = new StringTokenizer(new String(b, "UTF-8"), sep);
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while (st.hasMoreTokens()) {
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set.add(st.nextToken());
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}
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return set;
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}
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public static void saveSet(File file, String format, Set<String> set, String sep) throws IOException {
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File tf = new File(file.toString() + ".tmp" + (System.currentTimeMillis() % 1000));
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OutputStream os = null;
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if ((format == null) || (format.equals("plain"))) {
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os = new BufferedOutputStream(new FileOutputStream(tf));
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} else if (format.equals("gzip")) {
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os = new GZIPOutputStream(new FileOutputStream(tf));
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} else if (format.equals("zip")) {
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ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(file));
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String name = file.getName();
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if (name.endsWith(".zip")) name = name.substring(0, name.length() - 4);
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zos.putNextEntry(new ZipEntry(name + ".txt"));
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os = zos;
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}
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for (Iterator<String> i = set.iterator(); i.hasNext(); ) {
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os.write((i.next().toString()).getBytes());
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if (sep != null) os.write(sep.getBytes());
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}
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os.close();
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file.delete();
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tf.renameTo(file);
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}
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public static void saveSet(File file, String format, kelondroRowSet set, String sep) throws IOException {
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File tf = new File(file.toString() + ".tmp" + (System.currentTimeMillis() % 1000));
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OutputStream os = null;
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if ((format == null) || (format.equals("plain"))) {
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os = new BufferedOutputStream(new FileOutputStream(tf));
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} else if (format.equals("gzip")) {
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os = new GZIPOutputStream(new FileOutputStream(tf));
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} else if (format.equals("zip")) {
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ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(file));
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String name = file.getName();
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if (name.endsWith(".zip")) name = name.substring(0, name.length() - 4);
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zos.putNextEntry(new ZipEntry(name + ".txt"));
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os = zos;
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}
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Iterator<kelondroRow.Entry> i = set.rows();
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String key;
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if (i.hasNext()) {
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key = new String(i.next().getColBytes(0));
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os.write(key.getBytes());
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}
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while (i.hasNext()) {
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key = new String(((kelondroRow.Entry) i.next()).getColBytes(0));
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if (sep != null) os.write(sep.getBytes());
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os.write(key.getBytes());
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}
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os.close();
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file.delete();
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tf.renameTo(file);
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}
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/**
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* Moves all files from a directory to another.
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* @param from_dir Directory which contents will be moved.
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* @param to_dir Directory to move into. It must exist already.
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*/
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public static void moveAll(File from_dir, File to_dir) {
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if (!(from_dir.isDirectory())) return;
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if (!(to_dir.isDirectory())) return;
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String[] list = from_dir.list();
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for (int i = 0; i < list.length; i++) (new File(from_dir, list[i])).renameTo(new File(to_dir, list[i]));
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}
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public static class dirlistComparator implements Comparator<File> {
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public int compare(File file1, File file2) {
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if (file1.isDirectory() && !file2.isDirectory()) {
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return -1;
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} else if (!file1.isDirectory() && file2.isDirectory()) {
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return 1;
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} else {
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return file1.getName().compareToIgnoreCase(file2.getName());
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}
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}
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}
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public static void main(String[] args) {
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try {
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writeAndGZip("ein zwei drei, Zauberei".getBytes(), new File("zauberei.txt.gz"));
|
|
} catch (IOException e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
}
|