net.pandoragames.far.ui.FileSearchThread.java Source code

Introduction

Here is the source code for net.pandoragames.far.ui.FileSearchThread.java

Source

package net.pandoragames.far.ui;

import java.io.File;
import java.util.HashSet;
import java.util.Set;
import java.util.regex.Pattern;

import net.pandoragames.far.FileSelector;
import net.pandoragames.far.ui.model.MessageBox;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * Executes {@link net.pandoragames.far.FileSelector#listFiles(Pattern, File) FileSelector.listFiles()}
 * in a thread on its own. This class is used internally by {@link UIBean UIBean}.
 * @author Olivier Wehner at 07.03.2008
 * <!--
 *  FAR - Find And Replace
 *  Copyright (C) 2009,  Olivier Wehner
    
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
    
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
    
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *  --> 
 */
public class FileSearchThread extends Thread {
    private FileSelector fileSelector;
    private FileFilter criteria;
    private Set<File> fileSet;
    private MessageBox messageBox;
    private Log threadLog;

    /**
     * This class is used internally by {@link UIBean UIBean}.
     * @param selector not null
     * @param findForm not null
     * @param messageSink not null
     */
    FileSearchThread(FileSelector selector, FileFilter findForm, MessageBox messageSink) {
        threadLog = LogFactory.getLog(this.getClass());
        criteria = findForm;
        fileSelector = selector;
        messageBox = messageSink;
    }

    /**
     * Executes {@link net.pandoragames.far.FileSelector#listFiles(Pattern, File) FileSelector.listFiles()}.
     */
    public void run() {
        if (threadLog.isInfoEnabled()) {
            StringBuilder buffer = new StringBuilder();
            buffer.append("Searching for ");
            buffer.append(criteria.getFileNamePattern().getPattern());
            if (criteria.getFileNamePattern().isRegex())
                buffer.append(" (regex)");
            buffer.append(" at ").append(criteria.getBaseDirectory().getPath());
            if (criteria.isIncludeSubDirs()) {
                buffer.append(" and subdirectories");
                if (criteria.getDirectoryPattern() != null) {
                    buffer.append(" (");
                    if (criteria.getFileNamePattern().isRegex())
                        buffer.append("regex: ");
                    buffer.append(criteria.getDirectoryPattern().getPattern());
                    if (criteria.isExcludeMatchingDirectories())
                        buffer.append(" excluded");
                    buffer.append(")");
                }
            }
            threadLog.info(buffer.toString());
        }
        fileSelector.setMaxSearchDepth(criteria.isIncludeSubDirs() ? criteria.getMaxDepth() : 0);
        Pattern directoryPattern = null;
        if (criteria.getDirectoryPattern() != null) {
            if (criteria.isExcludeMatchingDirectories()) {
                fileSelector.setDirectoriesExcluded(criteria.getDirectoryPattern().toRegexPattern());
            } else {
                directoryPattern = criteria.getDirectoryPattern().toRegexPattern();
                fileSelector.setDirectoriesExcluded(null);
            }
        } else {
            fileSelector.setDirectoriesExcluded(null);
        }
        try {
            Pattern pattern = criteria.getFileNamePattern().toRegexPattern();
            fileSet = fileSelector.listFiles(pattern, criteria.getBaseDirectory(), criteria.getAfter(),
                    criteria.getBefore(), directoryPattern);
            threadLog.info(fileSet.size() + " files found");
        } catch (Exception x) {
            threadLog.error(x.getClass().getName() + ": " + x.getMessage(), x);
            messageBox.error(x.getMessage());
            fileSet = new HashSet<File>();
        }
    }

    /**
     * Returns the search result.
     * @return found files.
     */
    public Set<File> getResult() {
        return fileSet;
    }
}