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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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/**
 * *********************************************************************
 * 

* Copyright 2018 Jochen Staerk *

* Use is subject to license terms. *

* 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.mustangproject.ZUGFeRD; import java.io.DataInputStream; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import org.apache.pdfbox.Loader; import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.pdmodel.PDDocumentCatalog; import org.apache.pdfbox.pdmodel.common.PDMetadata; import org.apache.xmpbox.XMPMetadata; import org.apache.xmpbox.schema.PDFAIdentificationSchema; import org.apache.xmpbox.xml.DomXmpParser; import org.apache.xmpbox.xml.XmpParsingException; import org.mustangproject.FileAttachment; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import jakarta.activation.DataSource; /*** * Auto-detects the source PDF-A-Version and acts accordingly * like a ZUGFeRDExporterFromA1 or ZUGFeRDExporterFromA3 */ public class ZUGFeRDExporterFromPDFA implements IZUGFeRDExporter { private static final Logger LOGGER = LoggerFactory.getLogger(ZUGFeRDExporterFromPDFA.class.getCanonicalName()); // log protected IZUGFeRDExporter theExporter; protected boolean ignorePDFAErrors = false; public ZUGFeRDExporterFromPDFA ignorePDFAErrors() { this.ignorePDFAErrors = true; return this; } protected void determineAndSetExporter(int PDFAVersion) { if (PDFAVersion == 3) { theExporter = new ZUGFeRDExporterFromA3(); if (ignorePDFAErrors) { ((ZUGFeRDExporterFromA3)theExporter).ignorePDFAErrors(); } } else if (PDFAVersion == 1) { theExporter = new ZUGFeRDExporterFromA1(); if (ignorePDFAErrors) { ((ZUGFeRDExporterFromA1)theExporter).ignorePDFAErrors(); } } else { throw new IllegalArgumentException("PDF-A version not supported"); } } public IZUGFeRDExporter getExporter() { if (theExporter==null) { throw new RuntimeException("In ZUGFeRDExporterFromPDFA, source must always be loaded before other operations are performed."); } return theExporter; } protected byte[] filenameToByteArray(String pdfFilename) throws IOException { try (FileInputStream fileInputStream = new FileInputStream(pdfFilename)) { return inputstreamToByteArray(fileInputStream); } } protected byte[] inputstreamToByteArray(InputStream fileInputStream) throws IOException { byte[] bytes = new byte[fileInputStream.available()]; DataInputStream dataInputStream = new DataInputStream(fileInputStream); dataInputStream.readFully(bytes); return bytes; } /*** * * @param byteArrayInputStream * @return 0 if unknown, 1 for PDF/A-1 or 3 for PDF/A-3 * @throws IOException */ private int getPDFAVersion(byte[] byteArrayInputStream) throws IOException { PDDocument document = Loader.loadPDF(byteArrayInputStream); PDDocumentCatalog catalog = document.getDocumentCatalog(); PDMetadata metadata = catalog.getMetadata(); // the PDF version we could get through the document but we want the PDF-A version, // which is different (and can probably base on different PDF versions) if (metadata != null) { try { DomXmpParser xmpParser = new DomXmpParser(); XMPMetadata xmp = xmpParser.parse(metadata.createInputStream()); PDFAIdentificationSchema pdfaSchema = xmp.getPDFAIdentificationSchema(); if (pdfaSchema != null) { return pdfaSchema.getPart(); } } catch (XmpParsingException e) { LOGGER.error("XmpParsingException", e); } finally { document.close(); } } return 0; } /*** * Load from filename * @param pdfFilename binary of a PDF/A1 compliant document * @return the A1 or A3 exporter * @throws IOException e.g. on read error */ public IZUGFeRDExporter load(String pdfFilename) throws IOException { determineAndSetExporter(getPDFAVersion(filenameToByteArray(pdfFilename))); return theExporter.load(pdfFilename); } /** * Makes A PDF/A3a-compliant document from a PDF-A1 compliant document (on the * metadata level, this will not e.g. convert graphics to JPG-2000) * * @param pdfBinary binary of a PDF/A1 compliant document * @return the generated exporter * @throws IOException (should not happen at all) */ public IZUGFeRDExporter load(byte[] pdfBinary) throws IOException { determineAndSetExporter(getPDFAVersion(pdfBinary)); return theExporter.load(pdfBinary); } /** * Makes A PDF/A3a-compliant document from a PDF-A1 compliant document (on the * metadata level, this will not e.g. convert graphics to JPG-2000) * * @param pdfSource source to read a PDF/A1 compliant document from * @return the generated ZUGFeRDExporter * @throws IOException if anything is wrong with inputstream */ public IZUGFeRDExporter load(InputStream pdfSource) throws IOException { byte[] byteArray=inputstreamToByteArray(pdfSource); determineAndSetExporter(getPDFAVersion(byteArray)); return theExporter.load(byteArray); } public IZUGFeRDExporter setCreator(String creator) { return getExporter().setCreator(creator); } public IZUGFeRDExporter setProfile(Profile p) { return getExporter().setProfile(p); } public IZUGFeRDExporter setProfile(String profileName) { Profile p = Profiles.getByName(profileName); if (p==null) { throw new RuntimeException("Profile not found."); } return getExporter().setProfile(p); } public IZUGFeRDExporter setConformanceLevel(PDFAConformanceLevel newLevel) { return getExporter().setConformanceLevel(newLevel); } public IZUGFeRDExporter setProducer(String producer) { return getExporter().setProducer(producer); } public IZUGFeRDExporter setZUGFeRDVersion(int version) { return getExporter().setZUGFeRDVersion(version); } public boolean ensurePDFIsValid(final DataSource dataSource) throws IOException { return getExporter().ensurePDFIsValid(dataSource); } public IZUGFeRDExporter setXML(byte[] zugferdData) throws IOException { return getExporter().setXML(zugferdData); } public IZUGFeRDExporter disableFacturX() { return getExporter().disableFacturX(); } // public IZUGFeRDExporter setProfile(Profile zugferdConformanceLevel); public String getNamespaceForVersion(int ver) { return getExporter().getNamespaceForVersion(ver); } public String getPrefixForVersion(int ver) { return getExporter().getPrefixForVersion(ver); } public IZUGFeRDExporter disableAutoClose(boolean disableAutoClose) { return getExporter().disableAutoClose(disableAutoClose); } public IXMLProvider getProvider() { return getExporter().getProvider(); } @Override public void close() throws IOException { getExporter().close(); } @Override public IExporter setTransaction(IExportableTransaction trans) throws IOException { return getExporter().setTransaction(trans); } @Override public void export(String ZUGFeRDfilename) throws IOException { getExporter().export(ZUGFeRDfilename); } @Override public void export(OutputStream output) throws IOException { getExporter().export(output); } public void attachFile(FileAttachment file) { theExporter.attachFile(file); } public void attachFile(String filename, byte[] data, String mimetype, String relation) { theExporter.attachFile(filename, data, mimetype, relation); } }





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