mirror of
https://github.com/yacy/yacy_search_server.git
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60e71876ad
- more concurrency-awareness (HashMap -> ConcurrentHashMap) git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6910 6c8d7289-2bf4-0310-a012-ef5d649a1542
971 lines
36 KiB
Java
971 lines
36 KiB
Java
// serverFileUtils.java
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// -------------------------------------------
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// (C) by Michael Peter Christen; mc@yacy.net
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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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package net.yacy.kelondro.util;
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import java.io.BufferedInputStream;
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import java.io.BufferedOutputStream;
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import java.io.BufferedReader;
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import java.io.BufferedWriter;
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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.FileWriter;
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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.Serializable;
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import java.io.UnsupportedEncodingException;
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import java.io.Writer;
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import java.nio.charset.Charset;
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import java.util.ArrayList;
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import java.util.Comparator;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.LinkedList;
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import java.util.List;
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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 net.yacy.kelondro.index.Row;
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import net.yacy.kelondro.index.RowSet;
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import net.yacy.kelondro.logging.Log;
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public final class FileUtils {
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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(final InputStream source, final 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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*
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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 (-1 for all, else must be greater than zero)
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* @return Total number of bytes copied.
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* @throws IOException
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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(final InputStream source, final OutputStream dest, final long count) throws IOException {
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assert count == -1 || count > 0 : "precondition violated: count == " + count + " (nothing to copy)";
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if(count == 0) {
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// no bytes to copy
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return 0;
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}
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final 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(final File source, final Charset inputCharset, final 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 (final Exception e) {}
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}
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}
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public static int copy(final InputStream source, final Writer dest) throws IOException {
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final InputStreamReader reader = new InputStreamReader(source);
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return copy(reader,dest);
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}
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public static int copy(final InputStream source, final Writer dest, final Charset inputCharset) throws IOException {
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final 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(final String source, final 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(final Reader source, final Writer dest) throws IOException {
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final 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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dest.flush();
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} catch (final 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(final InputStream source, final 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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*
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* @param source InputStream
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* @param dest File
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* @param count the amount of bytes to copy
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* @throws IOException
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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(final InputStream source, final File dest, final long count) throws IOException {
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String path = dest.getParent();
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if (path != null && path.length() > 0) new File(path).mkdirs();
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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 (final Exception e) { Log.logWarning("FileUtils", "cannot close FileOutputStream for "+ dest +"! "+ e.getMessage()); }
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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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* @throws IOException
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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(final File source, final OutputStream dest, final 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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final 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 (final 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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* @throws IOException
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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(final File source, final 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 (final 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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* @throws IOException
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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(final File source, final 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 (final Exception e) {}
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if (fos != null) try {fos.close();} catch (final Exception e) {}
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}
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}
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public static void copy(final byte[] source, final 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(final byte[] source, final 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(final InputStream source) throws IOException {
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return read(source,-1);
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}
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public static byte[] read(final InputStream source, final int count) throws IOException {
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if (count > 0) {
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byte[] b = new byte[count];
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int c = source.read(b, 0, count);
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assert c == count: "count = " + count + ", c = " + c;
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if (c != count) {
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byte[] bb = new byte[c];
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System.arraycopy(b, 0, bb, 0, c);
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return bb;
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}
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return b;
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}
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final ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
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copy(source, baos, count);
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baos.close();
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return baos.toByteArray();
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}
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public static byte[] read(final File source) throws IOException {
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final 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 (final Exception e) {}
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fis = null;
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}
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return buffer;
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}
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public static byte[] readAndZip(final 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 (final Exception e) {}
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if (byteOut != null) try { byteOut.close(); } catch (final Exception e) {}
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}
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}
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public static void writeAndGZip(final byte[] source, final 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 (final Exception e) {}
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}
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}
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public static void writeAndGZip(final byte[] source, final 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 (final 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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/* "Bitwise OR of signed byte value
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*
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* [...] Values loaded from a byte array are sign extended to 32 bits before
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* any any bitwise operations are performed on the value. Thus, if b[0]
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* contains the value 0xff, and x is initially 0, then the code ((x <<
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* 8) | b[0]) will sign extend 0xff to get 0xffffffff, and thus give the
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* value 0xffffffff as the result. [...]" findbugs description of BIT_IOR_OF_SIGNED_BYTE
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*/
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if ((source.length > 1) && (((source[1] << 8) | (source[0] & 0xff)) == GZIPInputStream.GZIP_MAGIC)) {
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System.out.println("DEBUG: uncompressGZipArray - uncompressing source");
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try {
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final ByteArrayInputStream byteInput = new ByteArrayInputStream(source);
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final ByteArrayOutputStream byteOutput = new ByteArrayOutputStream(source.length / 5);
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final GZIPInputStream zippedContent = new GZIPInputStream(byteInput);
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final 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 (final 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(final File file) {
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final 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.charAt(0) != '#') set.add(line.trim().toLowerCase());
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}
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br.close();
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} catch (final IOException e) {
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} finally {
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if (br != null) try { br.close(); } catch (final 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> loadMap(final File f) {
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// load props
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try {
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final byte[] b = read(f);
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return table(strings(b));
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} catch (final IOException e2) {
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Log.logSevere("FileUtils", f.toString() + " not found", e2);
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return null;
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}
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}
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public static void saveMap(final File file, final Map<String, String> props, final String comment) throws IOException {
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PrintWriter pw = null;
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final File tf = new File(file.toString() + "." + (System.currentTimeMillis() % 1000));
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pw = new PrintWriter(tf, "UTF-8");
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pw.println("# " + comment);
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String key, value;
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for (final Map.Entry<String, String> entry: props.entrySet()) {
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key = entry.getKey();
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if (entry.getValue() == null) {
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value = "";
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} else {
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value = entry.getValue().replaceAll("\n", "\\\\n");
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}
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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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forceMove(tf, file);
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}
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public static Set<String> loadSet(final File file, final int chunksize, final boolean tree) throws IOException {
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final Set<String> set = (tree) ? (Set<String>) new TreeSet<String>() : (Set<String>) new HashSet<String>();
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final 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, "UTF-8"));
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}
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return set;
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}
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public static Set<String> loadSet(final File file, final String sep, final boolean tree) throws IOException {
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final Set<String> set = (tree) ? (Set<String>) new TreeSet<String>() : (Set<String>) new HashSet<String>();
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final byte[] b = read(file);
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final 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(final File file, final String format, final Set<byte[]> set, final String sep) throws IOException {
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final File tf = new File(file.toString() + ".prt" + (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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final 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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if(os != null) {
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for (final Iterator<byte[]> i = set.iterator(); i.hasNext(); ) {
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os.write(i.next());
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if (sep != null) os.write(sep.getBytes("UTF-8"));
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}
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os.close();
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}
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forceMove(tf, file);
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}
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public static void saveSet(final File file, final String format, final RowSet set, final String sep) throws IOException {
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final File tf = new File(file.toString() + ".prt" + (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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final 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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if (os != null) {
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final Iterator<Row.Entry> i = set.iterator();
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String key;
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if (i.hasNext()) {
|
|
key = new String(i.next().getColBytes(0, false));
|
|
os.write(key.getBytes("UTF-8"));
|
|
}
|
|
while (i.hasNext()) {
|
|
key = new String(i.next().getColBytes(0, false));
|
|
if (sep != null) os.write(sep.getBytes("UTF-8"));
|
|
os.write(key.getBytes("UTF-8"));
|
|
}
|
|
os.close();
|
|
}
|
|
forceMove(tf, file);
|
|
}
|
|
|
|
|
|
public static Map<String, String> table(Iterator<String> li) {
|
|
int pos;
|
|
String line;
|
|
final HashMap<String, String> props = new HashMap<String, String>();
|
|
while (li.hasNext()) {
|
|
line = li.next();
|
|
pos = line.indexOf('=');
|
|
if (pos > 0) props.put(line.substring(0, pos).trim(), line.substring(pos + 1).trim());
|
|
}
|
|
return props;
|
|
}
|
|
|
|
public static Map<String, String> table(final byte[] a) {
|
|
return table(strings(a));
|
|
}
|
|
|
|
/**
|
|
* parse config files
|
|
*
|
|
* splits the lines in list into pairs sperarated by =, lines beginning with # are ignored
|
|
* ie:
|
|
* abc=123
|
|
* # comment
|
|
* fg=dcf
|
|
* => Map{abc => 123, fg => dcf}
|
|
* @param list
|
|
* @return
|
|
*/
|
|
public static Map<String, String> table(final ArrayList<String> list) {
|
|
if (list == null) return new HashMap<String, String>();
|
|
final Iterator<String> i = list.iterator();
|
|
int pos;
|
|
String line;
|
|
final HashMap<String, String> props = new HashMap<String, String>(list.size());
|
|
while (i.hasNext()) {
|
|
line = i.next().trim();
|
|
if (line.length() > 0 && line.charAt(0) == '#') continue; // exclude comments
|
|
//System.out.println("NXTOOLS_PROPS - LINE:" + line);
|
|
pos = line.indexOf('=');
|
|
if (pos > 0) props.put(line.substring(0, pos).trim(), line.substring(pos + 1).trim());
|
|
}
|
|
return props;
|
|
}
|
|
|
|
public static Iterator<String> strings(byte[] a) {
|
|
if (a == null) return new ArrayList<String>().iterator();
|
|
try {
|
|
return new StringsIterator(new BufferedReader(new InputStreamReader(new ByteArrayInputStream(a), "UTF-8")));
|
|
} catch (UnsupportedEncodingException e) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Read lines of a file into an ArrayList.
|
|
*
|
|
* @param listFile the file
|
|
* @return the resulting array as an ArrayList
|
|
*/
|
|
public static ArrayList<String> getListArray(final File listFile){
|
|
String line;
|
|
final ArrayList<String> list = new ArrayList<String>();
|
|
BufferedReader br = null;
|
|
try {
|
|
br = new BufferedReader(new InputStreamReader(new FileInputStream(listFile),"UTF-8"));
|
|
|
|
while((line = br.readLine()) != null){
|
|
list.add(line);
|
|
}
|
|
br.close();
|
|
} catch(final IOException e) {
|
|
// list is empty
|
|
} finally {
|
|
if (br!=null) try { br.close(); } catch (final Exception e) {}
|
|
}
|
|
return list;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Write a String to a file (used for string representation of lists).
|
|
*
|
|
* @param listFile the file to write to
|
|
* @param out the String to write
|
|
* @return returns <code>true</code> if successful, <code>false</code> otherwise
|
|
*/
|
|
public static boolean writeList(final File listFile, final String out) {
|
|
BufferedWriter bw = null;
|
|
try {
|
|
bw = new BufferedWriter(new PrintWriter(new FileWriter(listFile)));
|
|
bw.write(out);
|
|
bw.close();
|
|
return true;
|
|
} catch(final IOException e) {
|
|
return false;
|
|
} finally {
|
|
if (bw!=null) try { bw.close(); } catch (final Exception e) {}
|
|
}
|
|
}
|
|
|
|
public static final char LF = (char) 10;
|
|
public static final char CR = (char) 13;
|
|
|
|
/**
|
|
* Read lines of a text file into a String, optionally ignoring comments.
|
|
*
|
|
* @param listFile the File to read from.
|
|
* @param withcomments If <code>false</code> ignore lines starting with '#'.
|
|
* @return String representation of the file content.
|
|
*/
|
|
public static String getListString(final File listFile, final boolean withcomments){
|
|
final StringBuilder temp = new StringBuilder();
|
|
|
|
BufferedReader br = null;
|
|
try{
|
|
br = new BufferedReader(new InputStreamReader(new FileInputStream(listFile)));
|
|
temp.ensureCapacity((int) listFile.length());
|
|
|
|
// Read the List
|
|
String line = "";
|
|
while ((line = br.readLine()) != null) {
|
|
if (line.length() == 0) continue;
|
|
if (line.charAt(0) != '#' || withcomments) {
|
|
//temp += line + serverCore.CRLF_STRING;
|
|
temp.append(line).append(CR).append(LF);
|
|
}
|
|
}
|
|
br.close();
|
|
} catch (final IOException e) {
|
|
} finally {
|
|
if (br!=null) try { br.close(); } catch (final Exception e) {}
|
|
}
|
|
|
|
return new String(temp);
|
|
}
|
|
|
|
/**
|
|
* Read content of a directory into a String array of file names.
|
|
* @param dirname The directory to get the file listing from. If it doesn't exist yet,
|
|
* it will be created.
|
|
* @return array of file names
|
|
*/
|
|
public static List<String> getDirListing(final String dirname){
|
|
return getDirListing(dirname, null);
|
|
}
|
|
|
|
/**
|
|
* Read content of a directory into a String array of file names.
|
|
* @param dirname The directory to get the file listing from. If it doesn't exist yet,
|
|
* it will be created.
|
|
* @param filter String which contains a regular expression which has to be matched by
|
|
* file names in order to appear in returned array. All file names will be returned if
|
|
* filter is null.
|
|
* @return array of file names
|
|
*/
|
|
public static List<String> getDirListing(final String dirname, final String filter) {
|
|
return getDirListing(new File(dirname), filter);
|
|
}
|
|
|
|
/**
|
|
* Read content of a directory into a String array of file names.
|
|
*
|
|
* @param dir The directory to get the file listing from. If it doesn't exist yet,
|
|
* it will be created.
|
|
* @return array of file names
|
|
*/
|
|
public static List<String> getDirListing(final File dir){
|
|
return getDirListing(dir, null);
|
|
}
|
|
|
|
/**
|
|
* Read content of a directory into a String array of file names.
|
|
* @param dir The directory to get the file listing from. If it doesn't exist yet,
|
|
* it will be created.
|
|
* @param filter String which contains a regular expression which has to be matched by
|
|
* file names in order to appear in returned array. All file names will be returned if
|
|
* filter is null.
|
|
* @return array of file names
|
|
*/
|
|
public static List<String> getDirListing(final File dir, final String filter){
|
|
List<String> ret = new LinkedList<String>();
|
|
File[] fileList;
|
|
if (dir != null ) {
|
|
if (!dir.exists()) {
|
|
dir.mkdir();
|
|
}
|
|
fileList = dir.listFiles();
|
|
for (int i=0; i<= fileList.length-1; i++) {
|
|
if (filter == null || fileList[i].getName().matches(filter)) {
|
|
ret.add(fileList[i].getName());
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
// same as below
|
|
public static ArrayList<File> getDirsRecursive(final File dir, final String notdir){
|
|
return getDirsRecursive(dir, notdir, true);
|
|
}
|
|
|
|
/**
|
|
* Returns a List of all dirs and subdirs as File Objects
|
|
*
|
|
* Warning: untested
|
|
*/
|
|
public static ArrayList<File> getDirsRecursive(final File dir, final String notdir, final boolean excludeDotfiles){
|
|
final File[] dirList = dir.listFiles();
|
|
final ArrayList<File> resultList = new ArrayList<File>();
|
|
ArrayList<File> recursive;
|
|
Iterator<File> iter;
|
|
for (int i=0;i<dirList.length;i++) {
|
|
if (dirList[i].isDirectory() && (!excludeDotfiles || !dirList[i].getName().startsWith(".")) && !dirList[i].getName().equals(notdir)) {
|
|
resultList.add(dirList[i]);
|
|
recursive = getDirsRecursive(dirList[i], notdir, excludeDotfiles);
|
|
iter=recursive.iterator();
|
|
while (iter.hasNext()) {
|
|
resultList.add(iter.next());
|
|
}
|
|
}
|
|
}
|
|
return resultList;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Write elements of an Array of Strings to a file (one element per line).
|
|
*
|
|
* @param listFile the file to write to
|
|
* @param list the Array to write
|
|
* @return returns <code>true</code> if successful, <code>false</code> otherwise
|
|
*/
|
|
public static boolean writeList(final File listFile, final String[] list){
|
|
final StringBuilder out = new StringBuilder();
|
|
for(int i=0;i < list.length; i++){
|
|
out.append(list[i]).append(CR).append(LF);
|
|
}
|
|
return FileUtils.writeList(listFile, new String(out)); //(File, String)
|
|
}
|
|
|
|
public static class StringsIterator implements Iterator<String> {
|
|
private final BufferedReader reader;
|
|
private String nextLine;
|
|
public StringsIterator(final BufferedReader reader) {
|
|
this.reader = reader;
|
|
this.nextLine = null;
|
|
next();
|
|
}
|
|
public boolean hasNext() {
|
|
return nextLine != null;
|
|
}
|
|
|
|
public String next() {
|
|
String line = nextLine;
|
|
try {
|
|
while ((nextLine = reader.readLine()) != null) {
|
|
nextLine = nextLine.trim();
|
|
if (nextLine.length() > 0) break;
|
|
}
|
|
} catch (IOException e) {
|
|
nextLine = null;
|
|
}
|
|
return line;
|
|
}
|
|
|
|
public void remove() {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* @param from
|
|
* @param to
|
|
* @throws IOException
|
|
*/
|
|
private static void forceMove(final File from, final File to) throws IOException {
|
|
if(!(to.delete() && from.renameTo(to))) {
|
|
// do it manually
|
|
copy(from, to);
|
|
FileUtils.deletedelete(from);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Moves all files from a directory to another.
|
|
* @param from_dir Directory which contents will be moved.
|
|
* @param to_dir Directory to move into. It must exist already.
|
|
*/
|
|
public static void moveAll(final File from_dir, final File to_dir) {
|
|
if (!(from_dir.isDirectory())) return;
|
|
if (!(to_dir.isDirectory())) return;
|
|
final String[] list = from_dir.list();
|
|
for (int i = 0; i < list.length; i++) {
|
|
if(!new File(from_dir, list[i]).renameTo(new File(to_dir, list[i])))
|
|
Log.logWarning("serverFileUtils", "moveAll(): could not move from "+ from_dir + list[i] +" to "+ to_dir + list[i]);
|
|
}
|
|
}
|
|
|
|
|
|
public static class dirlistComparator implements Comparator<File>, Serializable {
|
|
|
|
/**
|
|
* generated serial
|
|
*/
|
|
private static final long serialVersionUID = -5196490300039230135L;
|
|
|
|
public int compare(final File file1, final File file2) {
|
|
if (file1.isDirectory() && !file2.isDirectory()) {
|
|
return -1;
|
|
} else if (!file1.isDirectory() && file2.isDirectory()) {
|
|
return 1;
|
|
} else {
|
|
return file1.getName().compareToIgnoreCase(file2.getName());
|
|
}
|
|
}
|
|
}
|
|
|
|
public static void main(final String[] args) {
|
|
try {
|
|
writeAndGZip("ein zwei drei, Zauberei".getBytes(), new File("zauberei.txt.gz"));
|
|
} catch (final IOException e) {
|
|
Log.logException(e);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* copies the input stream to one output stream (byte per byte)
|
|
* @param in
|
|
* @param out
|
|
* @return number of copies bytes
|
|
* @throws IOException
|
|
*/
|
|
public static int copyToStream(final BufferedInputStream in, final BufferedOutputStream out) throws IOException {
|
|
int count = 0;
|
|
// copy bytes
|
|
int b;
|
|
while ((b = in.read()) != -1) {
|
|
count++;
|
|
out.write(b);
|
|
}
|
|
out.flush();
|
|
return count;
|
|
}
|
|
|
|
/**
|
|
* copies the input stream to both output streams (byte per byte)
|
|
* @param in
|
|
* @param out0
|
|
* @param out1
|
|
* @return number of copies bytes
|
|
* @throws IOException
|
|
*/
|
|
public static int copyToStreams(final BufferedInputStream in, final BufferedOutputStream out0, final BufferedOutputStream out1) throws IOException {
|
|
assert out0 != null;
|
|
assert out1 != null;
|
|
|
|
int count = 0;
|
|
// copy bytes
|
|
int b;
|
|
while((b = in.read()) != -1) {
|
|
count++;
|
|
out0.write(b);
|
|
out1.write(b);
|
|
}
|
|
out0.flush();
|
|
out1.flush();
|
|
return count;
|
|
}
|
|
|
|
/**
|
|
* copies the input stream to all writers (byte per byte)
|
|
* @param data
|
|
* @param writer
|
|
* @param charSet
|
|
* @return
|
|
* @throws IOException
|
|
*/
|
|
public static int copyToWriter(final BufferedInputStream data, final BufferedWriter writer, final Charset charSet) throws IOException {
|
|
// the docs say: "For top efficiency, consider wrapping an InputStreamReader within a BufferedReader."
|
|
final Reader sourceReader = new InputStreamReader(data, charSet);
|
|
|
|
int count = 0;
|
|
// copy bytes
|
|
int b;
|
|
while((b = sourceReader.read()) != -1) {
|
|
count++;
|
|
writer.write(b);
|
|
}
|
|
writer.flush();
|
|
return count;
|
|
}
|
|
|
|
public static int copyToWriters(final BufferedInputStream data, final BufferedWriter writer0, final BufferedWriter writer1, final Charset charSet) throws IOException {
|
|
// the docs say: "For top efficiency, consider wrapping an InputStreamReader within a BufferedReader."
|
|
assert writer0 != null;
|
|
assert writer1 != null;
|
|
final Reader sourceReader = new InputStreamReader(data, charSet);
|
|
|
|
int count = 0;
|
|
// copy bytes
|
|
int b;
|
|
while((b = sourceReader.read()) != -1) {
|
|
count++;
|
|
writer0.write(b);
|
|
writer1.write(b);
|
|
}
|
|
writer0.flush();
|
|
writer1.flush();
|
|
return count;
|
|
}
|
|
|
|
/**
|
|
* delete files and directories
|
|
* if a directory is not empty, delete also everything inside
|
|
* because deletion sometimes fails on windows, there is also a windows exec included
|
|
* @param path
|
|
*/
|
|
public static void deletedelete(final File path) {
|
|
if (!path.exists()) return;
|
|
|
|
// empty the directory first
|
|
if (path.isDirectory()) {
|
|
final String[] list = path.list();
|
|
if (list != null) {
|
|
for (String s: list) deletedelete(new File(path, s));
|
|
}
|
|
}
|
|
|
|
int c = 0;
|
|
while (c++ < 20) {
|
|
if (!path.exists()) break;
|
|
if (path.delete()) break;
|
|
// some OS may be slow when giving up file pointer
|
|
//System.runFinalization();
|
|
//System.gc();
|
|
try { Thread.sleep(200); } catch (InterruptedException e) { break; }
|
|
}
|
|
if (path.exists()) {
|
|
path.deleteOnExit();
|
|
String p = "";
|
|
try {
|
|
p = path.getCanonicalPath();
|
|
} catch (IOException e1) {
|
|
Log.logException(e1);
|
|
}
|
|
if (System.getProperties().getProperty("os.name","").toLowerCase().startsWith("windows")) {
|
|
// deleting files on windows sometimes does not work with java
|
|
try {
|
|
String command = "cmd /C del /F /Q \"" + p + "\"";
|
|
Process r = Runtime.getRuntime().exec(command);
|
|
if (r == null) {
|
|
Log.logSevere("FileUtils", "cannot execute command: " + command);
|
|
} else {
|
|
byte[] response = read(r.getInputStream());
|
|
Log.logInfo("FileUtils", "deletedelete: " + new String(response));
|
|
}
|
|
} catch (IOException e) {
|
|
Log.logException(e);
|
|
}
|
|
}
|
|
if (path.exists()) Log.logSevere("FileUtils", "cannot delete file " + p);
|
|
}
|
|
}
|
|
}
|