org.jodconverter.job.SourceDocumentSpecsFromInputStream.java Source code

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Here is the source code for org.jodconverter.job.SourceDocumentSpecsFromInputStream.java

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/*
 * Copyright 2004 - 2012 Mirko Nasato and contributors
 *           2016 - 2018 Simon Braconnier and contributors
 *
 * This file is part of JODConverter - Java OpenDocument Converter.
 *
 * 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.jodconverter.job;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Optional;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.Validate;

import org.jodconverter.office.TemporaryFileMaker;

class SourceDocumentSpecsFromInputStream extends AbstractSourceDocumentSpecs implements SourceDocumentSpecs {

    private final InputStream inputStream;
    private final boolean closeStream;
    private final TemporaryFileMaker fileMaker;

    public SourceDocumentSpecsFromInputStream(final InputStream inputStream, final TemporaryFileMaker fileMaker,
            final boolean closeStream) {
        super(fileMaker.makeTemporaryFile());

        Validate.notNull(inputStream, "The inputStream is null");
        this.inputStream = inputStream;
        this.closeStream = closeStream;
        this.fileMaker = fileMaker;
    }

    @Override
    public File getFile() {

        // Write the InputStream to the temp file
        final File tempFile = Optional.ofNullable(getFormat())
                .map(format -> fileMaker.makeTemporaryFile(format.getExtension())).orElse(super.getFile());
        try {
            final FileOutputStream outputStream = new FileOutputStream(tempFile); // NOSONAR
            outputStream.getChannel().lock();
            try {
                IOUtils.copy(inputStream, outputStream);
                return tempFile;
            } finally {
                // Note: This will implicitly release the file lock.
                outputStream.close();
            }
        } catch (IOException ex) {
            throw new DocumentSpecsIOException("Could not write stream to file " + tempFile, ex);
        }
    }

    @Override
    public void onConsumed(final File tempFile) {

        // The temporary file must be deleted
        FileUtils.deleteQuietly(tempFile);

        if (closeStream) {
            try {
                inputStream.close();
            } catch (IOException ex) {
                throw new DocumentSpecsIOException("Could not close input stream", ex);
            }
        }
    }
}