org.sejda.impl.itext.SplitBySizeTask Maven / Gradle / Ivy

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/*
 * Created on 03/ago/2011
 * Copyright 2010 by Andrea Vacondio ([email protected]).
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at 
 * 
 * http://www.apache.org/licenses/LICENSE-2.0 
 * 
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * See the License for the specific language governing permissions and 
 * limitations under the License. 
 */
package org.sejda.impl.itext;

import static org.sejda.impl.itext.util.ITextUtils.nullSafeClosePdfReader;

import org.sejda.impl.itext.component.input.PdfSourceOpeners;
import org.sejda.impl.itext.component.split.SizePdfSplitter;
import org.sejda.model.exception.TaskException;
import org.sejda.model.input.PdfSourceOpener;
import org.sejda.model.parameter.SplitBySizeParameters;
import org.sejda.model.task.BaseTask;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.lowagie.text.pdf.PdfReader;

/**
 * Task splitting an input pdf document when the generated document reaches a given size.
 * 
 * @author Andrea Vacondio
 * 
 */
public class SplitBySizeTask extends BaseTask {

    private static final Logger LOG = LoggerFactory.getLogger(SplitBySizeTask.class);

    private PdfReader reader = null;
    private PdfSourceOpener sourceOpener;
    private SizePdfSplitter splitter;

    public void before(SplitBySizeParameters parameters) {
        sourceOpener = PdfSourceOpeners.newPartialReadOpener();
    }

    public void execute(SplitBySizeParameters parameters) throws TaskException {
        LOG.debug("Opening {} ", parameters.getSource());
        reader = parameters.getSource().open(sourceOpener);

        splitter = new SizePdfSplitter(reader, parameters);
        LOG.debug("Starting split by size {} bytes", parameters.getSizeToSplitAt());
        splitter.split(getNotifiableTaskMetadata());

        LOG.debug("Input documents splitted and written to {}", parameters.getOutput());
    }

    public void after() {
        nullSafeClosePdfReader(reader);
        splitter = null;
    }
}