com.jaeksoft.searchlib.streamlimiter.StreamLimiterFileInstance.java Source code

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Here is the source code for com.jaeksoft.searchlib.streamlimiter.StreamLimiterFileInstance.java

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/**   
 * License Agreement for OpenSearchServer
 *
 * Copyright (C) 2012 Emmanuel Keller / Jaeksoft
 * 
 * http://www.open-search-server.com
 * 
 * This file is part of OpenSearchServer.
 *
 * OpenSearchServer 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.
 *
 * OpenSearchServer 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 OpenSearchServer. 
 *  If not, see <http://www.gnu.org/licenses/>.
 **/

package com.jaeksoft.searchlib.streamlimiter;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;

import org.apache.commons.io.FilenameUtils;

import com.jaeksoft.searchlib.SearchLibException;
import com.jaeksoft.searchlib.crawler.file.process.FileInstanceAbstract;
import com.jaeksoft.searchlib.crawler.file.process.fileInstances.LocalFileInstance;
import com.jaeksoft.searchlib.util.IOUtils;

public class StreamLimiterFileInstance extends StreamLimiter {

    private final FileInstanceAbstract fileInstance;

    public StreamLimiterFileInstance(FileInstanceAbstract fileInstance, int limit)
            throws IOException, SearchLibException {
        super(limit, fileInstance.getFileName(), fileInstance.getURL());
        this.fileInstance = fileInstance;
    }

    @Override
    protected void loadOutputCache() throws LimitException, IOException {
        try {
            Long l = fileInstance.getFileSize();
            if (l != null)
                if (limit != 0 && l > limit)
                    throw new LimitException(
                            "File instance " + fileInstance.getFileName() + " larger than " + limit + " bytes.");
        } catch (SearchLibException e) {
            throw new IOException(e);
        }
        if (fileInstance instanceof LocalFileInstance)
            loadOutputCache(((LocalFileInstance) fileInstance).getFile());
        else {
            InputStream is = null;
            BufferedInputStream bis = null;
            try {
                is = fileInstance.getInputStream();
                bis = new BufferedInputStream(is);
                loadOutputCache(bis);
            } finally {
                IOUtils.close(is, bis);
            }
        }
    }

    @Override
    public File getFile() throws IOException, SearchLibException {
        if (fileInstance instanceof LocalFileInstance)
            return ((LocalFileInstance) fileInstance).getFile();
        String ext = FilenameUtils.getExtension(fileInstance.getFileName());
        return getTempFile(ext);
    }

}