Example usage for org.apache.pdfbox.cos COSName F

Introduction

In this page you can find the example usage for org.apache.pdfbox.cos COSName F.

Prototype

COSName F

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Usage

From source file:org.mustangproject.ZUGFeRD.ZUGFeRDExporter.java

License:Open Source License

/**
 * Embeds an external file (generic - any type allowed) in the PDF.
 *
 * @param doc          PDDocument to attach the file to.
 * @param filename     name of the file that will become attachment name in the PDF
 * @param relationship how the file relates to the content, e.g. "Alternative"
 * @param description  Human-readable description of the file content
 * @param subType      type of the data e.g. could be "text/xml" - mime like
 * @param data         the binary data of the file/attachment
 * @throws java.io.IOException//from   w w  w.  j a  va 2 s .c om
 */
public void PDFAttachGenericFile(PDDocument doc, String filename, String relationship, String description,
        String subType, byte[] data) throws IOException {
    fileAttached = true;

    PDComplexFileSpecification fs = new PDComplexFileSpecification();
    fs.setFile(filename);

    COSDictionary dict = fs.getCOSObject();
    dict.setName("AFRelationship", relationship);
    dict.setString("UF", filename);
    dict.setString("Desc", description);

    ByteArrayInputStream fakeFile = new ByteArrayInputStream(data);
    PDEmbeddedFile ef = new PDEmbeddedFile(doc, fakeFile);
    ef.setSubtype(subType);
    ef.setSize(data.length);
    ef.setCreationDate(new GregorianCalendar());

    ef.setModDate(GregorianCalendar.getInstance());

    fs.setEmbeddedFile(ef);

    // In addition make sure the embedded file is set under /UF
    dict = fs.getCOSObject();
    COSDictionary efDict = (COSDictionary) dict.getDictionaryObject(COSName.EF);
    COSBase lowerLevelFile = efDict.getItem(COSName.F);
    efDict.setItem(COSName.UF, lowerLevelFile);

    // now add the entry to the embedded file tree and set in the document.
    PDDocumentNameDictionary names = new PDDocumentNameDictionary(doc.getDocumentCatalog());
    PDEmbeddedFilesNameTreeNode efTree = names.getEmbeddedFiles();
    if (efTree == null) {
        efTree = new PDEmbeddedFilesNameTreeNode();
    }

    Map<String, PDComplexFileSpecification> namesMap = new HashMap<>();

    Map<String, PDComplexFileSpecification> oldNamesMap = efTree.getNames();
    if (oldNamesMap != null) {
        for (String key : oldNamesMap.keySet()) {
            namesMap.put(key, oldNamesMap.get(key));
        }
    }
    namesMap.put(filename, fs);
    efTree.setNames(namesMap);

    names.setEmbeddedFiles(efTree);
    doc.getDocumentCatalog().setNames(names);

    // AF entry (Array) in catalog with the FileSpec
    COSArray cosArray = (COSArray) doc.getDocumentCatalog().getCOSObject().getItem("AF");
    if (cosArray == null) {
        cosArray = new COSArray();
    }
    cosArray.add(fs);
    COSDictionary dict2 = doc.getDocumentCatalog().getCOSObject();
    COSArray array = new COSArray();
    array.add(fs.getCOSObject()); // see below
    dict2.setItem("AF", array);
    doc.getDocumentCatalog().getCOSObject().setItem("AF", cosArray);
}

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