org.mustangproject.ZUGFeRD.PDFBoxUpdateMitigation Maven / Gradle / Ivy

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FOSS Java library to read, write and validate european electronic invoices and orders in the UN/CEFACT Cross Industry Invoice based formats Factur-X/ZUGFeRD, XRechnung and Order-X in your invoice PDFs.

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package org.mustangproject.ZUGFeRD;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.pdfbox.io.IOUtils;
import org.apache.pdfbox.preflight.parser.PreflightParser;

import jakarta.activation.DataSource;

// Copied from PDFBox preflight 2.0.x 
final class ByteArrayDataSource implements DataSource
{
  private ByteArrayOutputStream data;
  private String type = null;
  private String name = null;

  public ByteArrayDataSource (InputStream is) throws IOException
  {
    data = new ByteArrayOutputStream ();
    IOUtils.copy (is, data);
    IOUtils.closeQuietly (is);
  }

  public String getContentType ()
  {
    return this.type;
  }

  /**
   * @param type
   *        the type to set
   */
  public void setType (String type)
  {
    this.type = type;
  }

  /**
   * @param name
   *        the name to set
   */
  public void setName (String name)
  {
    this.name = name;
  }

  public InputStream getInputStream () throws IOException
  {
    return new ByteArrayInputStream (data.toByteArray ());
  }

  public String getName ()
  {
    return this.name;
  }

  public OutputStream getOutputStream () throws IOException
  {
    this.data = new ByteArrayOutputStream ();
    return data;
  }
}

// Try to create an API similar to the 2.x one
final class PreflightParserHelper
{
  private static File createTmpFile (InputStream input) throws IOException
  {
    FileOutputStream fos = null;
    try
    {
      File tmpFile = File.createTempFile ("mustang-pdf", ".pdf");
      fos = new FileOutputStream (tmpFile);
      IOUtils.copy (input, fos);
      return tmpFile;
    }
    finally
    {
      IOUtils.closeQuietly (input);
      IOUtils.closeQuietly (fos);
    }
  }

  public static PreflightParser createPreflightParser (DataSource dataSource) throws IOException
  {
    return new PreflightParser (createTmpFile (dataSource.getInputStream ()));
  }
}

final class PDFBoxUpdateMitigation
{
  // Dummy for the name only
}