mirror of
https://github.com/yacy/yacy_search_server.git
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996 lines
36 KiB
Java
996 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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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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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.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.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.FileWriter;
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import java.io.FilenameFilter;
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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.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.Collections;
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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.concurrent.ConcurrentHashMap;
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import java.util.regex.Pattern;
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import java.util.zip.GZIPInputStream;
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import net.yacy.cora.document.encoding.UTF8;
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import net.yacy.cora.storage.Files;
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import net.yacy.cora.util.ConcurrentLog;
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import org.mozilla.intl.chardet.nsDetector;
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import org.mozilla.intl.chardet.nsPSMDetector;
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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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* @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)
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throws IOException {
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assert count < 0 || 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;
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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 && count == total) {
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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 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)
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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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assert source != null;
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assert dest != null;
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if ( source == null ) {
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throw new IOException("source is null");
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}
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if ( dest == null ) {
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throw new IOException("dest is null");
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}
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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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assert e != null;
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// an "sun.io.MalformedInputException: Missing byte-order mark" - exception may occur here
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//Log.logException(e);
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throw new IOException(
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e == null ? "null" : e.getMessage() == null ? e.toString() : e.getMessage(),
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e);
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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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final String path = dest.getParent();
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if ( path != null && path.length() > 0 ) {
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new File(path).mkdirs();
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}
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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 ) {
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try {
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fos.close();
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} catch (final Exception e ) {
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ConcurrentLog.warn(
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"FileUtils",
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"cannot close FileOutputStream for " + dest + "! " + e.getMessage());
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}
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}
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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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*
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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)
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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 ) {
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throw new IllegalStateException("Unable to skip '"
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+ start
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+ "' bytes. Only '"
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+ skipped
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+ "' bytes skipped.");
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}
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copy(fis, dest, -1);
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} finally {
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if ( fis != null ) {
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try {
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fis.close();
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} catch (final Exception e ) {
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}
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}
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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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*
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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 ) {
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try {
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fis.close();
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} catch (final Exception e ) {
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}
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}
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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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/**
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* Read fully source stream and close it.
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* @param source must not be null
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* @return source content as a byte array.
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* @throws IOException when a read/write error occured
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*/
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public static byte[] read(final InputStream source) throws IOException {
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byte[] content;
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try {
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content = read(source, -1);
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} finally {
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/* source input stream must be closed here in all cases */
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try {
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source.close();
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} catch(IOException ignoredException) {
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}
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}
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return content;
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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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final byte[] b = new byte[count];
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final 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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final 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);
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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 ) {
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p += c;
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}
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} finally {
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if ( fis != null ) {
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try {
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fis.close();
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} catch (final Exception e ) {
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}
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}
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fis = null;
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}
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return buffer;
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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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*
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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 ) {
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return null;
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}
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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) != '#' ) {
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set.add(line.trim().toLowerCase());
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}
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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 ) {
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try {
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br.close();
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} catch (final Exception e ) {
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}
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}
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}
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return set;
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}
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public static ConcurrentHashMap<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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ConcurrentLog.severe("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 ConcurrentHashMap<String, byte[]> loadMapB(final File f) {
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ConcurrentHashMap<String, String> m = loadMap(f);
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if (m == null) return null;
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ConcurrentHashMap<String, byte[]> mb = new ConcurrentHashMap<String, byte[]>();
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for (Map.Entry<String, String> e: m.entrySet()) mb.put(e.getKey(), UTF8.getBytes(e.getValue()));
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return mb;
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}
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private final static Pattern backslashbackslash = Pattern.compile("\\\\");
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private final static Pattern unescaped_equal = Pattern.compile("=");
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private final static Pattern escaped_equal = Pattern.compile("\\=", Pattern.LITERAL);
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private final static Pattern escaped_newline = Pattern.compile("\\n", Pattern.LITERAL);
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private final static Pattern escaped_backslash = Pattern.compile(Pattern.quote("\\"), Pattern.LITERAL);
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public static void saveMap(final File file, final Map<String, String> props, final String comment) {
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boolean err = false;
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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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try {
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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 ( key != null ) {
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key = backslashbackslash.matcher(key).replaceAll("\\\\");
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key = escaped_newline.matcher(key).replaceAll("\\n");
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key = unescaped_equal.matcher(key).replaceAll("\\=");
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}
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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();
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value = backslashbackslash.matcher(value).replaceAll("\\\\");
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value = escaped_newline.matcher(value).replaceAll("\\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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} catch (final FileNotFoundException e ) {
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ConcurrentLog.warn("FileUtils", e.getMessage(), e);
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err = true;
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} catch (final UnsupportedEncodingException e ) {
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ConcurrentLog.warn("FileUtils", e.getMessage(), e);
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err = true;
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} finally {
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if ( pw != null ) {
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pw.close();
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}
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pw = null;
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}
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if (!err) try {
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forceMove(tf, file);
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} catch (final IOException e ) {
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// ignore
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}
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}
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public static void saveMapB(final File file, final Map<String, byte[]> props, final String comment) {
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HashMap<String, String> m = new HashMap<String, String>();
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for (Map.Entry<String, byte[]> e: props.entrySet()) m.put(e.getKey(), UTF8.String(e.getValue()));
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saveMap(file, m, comment);
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}
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public static ConcurrentHashMap<String, String> table(final Reader r) {
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final BufferedReader br = new BufferedReader(r);
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return table(new StringsIterator(br));
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}
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public static ConcurrentHashMap<String, String> table(final Iterator<String> li) {
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String line;
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final ConcurrentHashMap<String, String> props = new ConcurrentHashMap<String, String>();
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while ( li.hasNext() ) {
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int pos = 0;
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line = li.next().trim();
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if ( !line.isEmpty() && line.charAt(0) == '#' ) {
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continue; // exclude comments
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}
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do {
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// search for unescaped =
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pos = line.indexOf('=', pos + 1);
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} while ( pos > 0 && line.charAt(pos - 1) == '\\' );
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if ( pos > 0 ) try {
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String key = escaped_equal.matcher(line.substring(0, pos).trim()).replaceAll("=");
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key = escaped_newline.matcher(key).replaceAll("\n");
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key = escaped_backslash.matcher(key).replaceAll("\\");
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String value = escaped_newline.matcher(line.substring(pos + 1).trim()).replaceAll("\n");
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value = value.replace("\\\\", "\\"); // does not work: escaped_backslashbackslash.matcher(value).replaceAll("\\");
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//System.out.println("key = " + key + ", value = " + value);
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props.put(key, value);
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} catch (final IndexOutOfBoundsException e) {
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ConcurrentLog.logException(e);
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}
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}
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return props;
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}
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public static Map<String, String> table(final byte[] a) {
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if (a == null) return new ConcurrentHashMap<String, String>();
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//System.out.println("***TABLE: a.size = " + a.length);
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return table(strings(a));
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}
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public static Iterator<String> strings(final byte[] a) {
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if ( a == null ) {
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return new ArrayList<String>().iterator();
|
|
}
|
|
try {
|
|
return new StringsIterator(new BufferedReader(new InputStreamReader(new ByteArrayInputStream(a), "UTF-8")));
|
|
} catch (final 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
|
|
*/
|
|
private 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 ) {
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private static final char LF = (char) 10;
|
|
private 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(300);
|
|
|
|
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.isEmpty() ) {
|
|
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) {
|
|
final 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);
|
|
}
|
|
|
|
/**
|
|
* @param sourceDir source directory. Must be not null.
|
|
* @param notdir name of dir to exlcude. Can be null
|
|
* @param fileNameFilter filter to apply on file names. Can be null.
|
|
* @return list of all files passing fileFilter under sourceDir including sub directories
|
|
*/
|
|
public static List<File> getFilesRecursive(final File sourceDir, final String notdir, final FilenameFilter fileNameFilter) {
|
|
List<File> dirList = getDirsRecursive(sourceDir,
|
|
notdir);
|
|
dirList.add(sourceDir);
|
|
List<File> files = new ArrayList<>();
|
|
for (final File dir : dirList) {
|
|
Collections.addAll(files, dir.listFiles(fileNameFilter));
|
|
}
|
|
return files;
|
|
}
|
|
|
|
/**
|
|
* Returns a List of all dirs and subdirs as File Objects Warning: untested
|
|
*/
|
|
private 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(list.length * 40 + 1);
|
|
for ( final String element : list ) {
|
|
out.append(element).append(CR).append(LF);
|
|
}
|
|
return FileUtils.writeList(listFile, new String(out)); //(File, String)
|
|
}
|
|
|
|
private static class StringsIterator implements Iterator<String> {
|
|
private BufferedReader reader;
|
|
private String nextLine;
|
|
|
|
private StringsIterator(final BufferedReader reader) {
|
|
this.reader = reader;
|
|
this.nextLine = null;
|
|
next();
|
|
}
|
|
|
|
@Override
|
|
public boolean hasNext() {
|
|
return this.nextLine != null;
|
|
}
|
|
|
|
@Override
|
|
public String next() {
|
|
final String line = this.nextLine;
|
|
if (this.reader != null) try {
|
|
while ( (this.nextLine = this.reader.readLine()) != null ) {
|
|
this.nextLine = this.nextLine.trim();
|
|
if ( !this.nextLine.isEmpty() ) {
|
|
break;
|
|
}
|
|
}
|
|
} catch (final IOException e ) {
|
|
this.nextLine = null;
|
|
} catch (final OutOfMemoryError e ) {
|
|
ConcurrentLog.logException(e);
|
|
this.nextLine = null;
|
|
}
|
|
if (this.nextLine == null && this.reader != null) {
|
|
try {
|
|
this.reader.close();
|
|
} catch (final IOException e) {} finally {
|
|
this.reader = null;
|
|
}
|
|
}
|
|
return line;
|
|
}
|
|
|
|
@Override
|
|
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
|
|
Files.copy(from, to);
|
|
FileUtils.deletedelete(from);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates a temp file in the default system tmp directory (System property ""java.io.tmpdir"")
|
|
* with a name constructed by combination of class name and name.
|
|
* Marks the file with deleteOnExit() to be at least deleted on shutdown of jvm
|
|
*
|
|
* @param classObj name is used as prefix
|
|
* @param name
|
|
* @return temp file
|
|
* @throws IOException
|
|
*/
|
|
public static final File createTempFile(final Class<?> classObj, final String name) throws IOException {
|
|
String parserClassName = classObj.getName();
|
|
int idx = parserClassName.lastIndexOf('.');
|
|
if ( idx != -1 ) {
|
|
parserClassName = parserClassName.substring(idx + 1);
|
|
}
|
|
|
|
// get the file extension
|
|
idx = name.lastIndexOf('/');
|
|
final String fileName = (idx != -1) ? name.substring(idx + 1) : name;
|
|
|
|
idx = fileName.lastIndexOf('.');
|
|
final String fileExt = (idx > -1) ? fileName.substring(idx + 1) : "";
|
|
|
|
// create the temp file
|
|
final File tempFile =
|
|
File.createTempFile(
|
|
parserClassName + "_" + ((idx > -1) ? fileName.substring(0, idx) : fileName),
|
|
(!fileExt.isEmpty()) ? "." + fileExt : fileExt);
|
|
return tempFile;
|
|
}
|
|
|
|
/**
|
|
* 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 == null || !path.exists() ) {
|
|
return;
|
|
}
|
|
|
|
// empty the directory first
|
|
if ( path.isDirectory() ) {
|
|
final String[] list = path.list();
|
|
if ( list != null ) {
|
|
for ( final String s : list ) {
|
|
deletedelete(new File(path, s));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (path.exists()) path.delete();
|
|
/*
|
|
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 (final InterruptedException e ) {
|
|
break;
|
|
}
|
|
}
|
|
*/
|
|
if ( path.exists() ) {
|
|
path.deleteOnExit();
|
|
String p = "";
|
|
try {
|
|
p = path.getCanonicalPath();
|
|
} catch (final IOException e1 ) {
|
|
ConcurrentLog.logException(e1);
|
|
}
|
|
if ( System.getProperties().getProperty("os.name", "").toLowerCase().startsWith("windows") ) {
|
|
// deleting files on windows sometimes does not work with java
|
|
try {
|
|
final String command = "cmd /C del /F /Q \"" + p + "\"";
|
|
final Process r = Runtime.getRuntime().exec(command);
|
|
if ( r == null ) {
|
|
ConcurrentLog.severe("FileUtils", "cannot execute command: " + command);
|
|
} else {
|
|
final byte[] response = read(r.getInputStream());
|
|
ConcurrentLog.info("FileUtils", "deletedelete: " + UTF8.String(response));
|
|
}
|
|
} catch (final IOException e ) {
|
|
ConcurrentLog.logException(e);
|
|
}
|
|
}
|
|
if ( path.exists() ) {
|
|
ConcurrentLog.severe("FileUtils", "cannot delete file " + p);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Checks if a certain file is in a given directory.
|
|
* @param file the file to check
|
|
* @param directory the directory which must contain the file
|
|
* @return true if file is contained in directory
|
|
*/
|
|
public static boolean isInDirectory(final File file, final File directory) {
|
|
|
|
boolean inDirectory;
|
|
|
|
try {
|
|
inDirectory = (
|
|
directory != null
|
|
&& directory.isDirectory()
|
|
&& file != null
|
|
&& file.isFile()
|
|
&& directory.getCanonicalPath().equalsIgnoreCase(
|
|
file.getParentFile().getCanonicalPath()));
|
|
} catch (final IOException e) {
|
|
inDirectory = false;
|
|
}
|
|
|
|
return inDirectory;
|
|
}
|
|
|
|
/**
|
|
* auto-detect the charset of a file
|
|
* used code from http://jchardet.sourceforge.net/;
|
|
* see also: http://www-archive.mozilla.org/projects/intl/chardet.html
|
|
* @param file
|
|
* @return a set of probable charsets
|
|
* @throws IOException
|
|
*/
|
|
public static Set<String> detectCharset(File file) throws IOException {
|
|
// auto-detect charset, used code from http://jchardet.sourceforge.net/; see also: http://www-archive.mozilla.org/projects/intl/chardet.html
|
|
nsDetector det = new nsDetector(nsPSMDetector.ALL);
|
|
BufferedInputStream imp = new BufferedInputStream(new FileInputStream(file));
|
|
|
|
byte[] buf = new byte[1024] ;
|
|
int len;
|
|
boolean done = false ;
|
|
boolean isAscii = true ;
|
|
|
|
while ((len = imp.read(buf,0,buf.length)) != -1) {
|
|
if (isAscii) isAscii = det.isAscii(buf,len);
|
|
if (!isAscii && !done) done = det.DoIt(buf,len, false);
|
|
}
|
|
det.DataEnd();
|
|
Set<String> result = new HashSet<>();
|
|
if (isAscii) {
|
|
result.add("ASCII");
|
|
} else {
|
|
for (String c: det.getProbableCharsets()) result.add(c);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Because the checking of very large files for their charset may take some time, we do this concurrently in this method
|
|
* This method does not return anything but it logs an info line if the charset is a good choice
|
|
* and it logs a warning line if the choice was bad.
|
|
* @param file the file to be checked
|
|
* @param givenCharset the charset that we consider to be valid
|
|
* @param concurrent if this shall run concurrently
|
|
*/
|
|
public static void checkCharset(final File file, final String givenCharset, final boolean concurrent) {
|
|
Thread t = new Thread() {
|
|
@Override
|
|
public void run() {
|
|
try {
|
|
Set<String> charsets = FileUtils.detectCharset(file);
|
|
if (charsets.contains(givenCharset)) {
|
|
ConcurrentLog.info("checkCharset", "appropriate charset '" + givenCharset + "' for import of " + file + ", is part one detected " + charsets);
|
|
} else {
|
|
ConcurrentLog.warn("checkCharset", "possibly wrong charset '" + givenCharset + "' for import of " + file + ", use one of " + charsets);
|
|
}
|
|
} catch (IOException e) {}
|
|
|
|
}
|
|
};
|
|
if (concurrent) t.start(); else t.run();
|
|
}
|
|
|
|
}
|