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

Introduction

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

Prototype

COSName INFO

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Usage

From source file:com.aaasec.sigserv.csspsupport.pdfbox.modifications.CsCOSWriter.java

License:Apache License

/**
 * This will write the body of the document.
 *
 * @param doc The document to write the body for.
 *
 * @throws IOException If there is an error writing the data.
 * @throws COSVisitorException If there is an error generating the data.
 *//*w w w .jav  a  2 s . co  m*/
protected void doWriteBody(COSDocument doc) throws IOException, COSVisitorException {
    COSDictionary trailer = doc.getTrailer();
    COSDictionary root = (COSDictionary) trailer.getDictionaryObject(COSName.ROOT);
    COSDictionary info = (COSDictionary) trailer.getDictionaryObject(COSName.INFO);
    COSDictionary encrypt = (COSDictionary) trailer.getDictionaryObject(COSName.ENCRYPT);
    if (root != null) {
        addObjectToWrite(root);
    }
    if (info != null) {
        addObjectToWrite(info);
    }

    while (objectsToWrite.size() > 0) {
        COSBase nextObject = objectsToWrite.removeFirst();
        objectsToWriteSet.remove(nextObject);
        doWriteObject(nextObject);
    }

    willEncrypt = false;

    if (encrypt != null) {
        addObjectToWrite(encrypt);
    }

    while (objectsToWrite.size() > 0) {
        COSBase nextObject = objectsToWrite.removeFirst();
        objectsToWriteSet.remove(nextObject);
        doWriteObject(nextObject);
    }
}

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From source file:com.aaasec.sigserv.csspsupport.pdfbox.modifications.CsCOSWriter.java

License:Apache License

/**
 * This will write the pdf document.//from   w ww  .  j  a v  a  2 s. co  m
 *
 * @param doc The document to write.
 * @param idTime The time seed used to generate the id
 *
 * @throws COSVisitorException If an error occurs while generating the data.
 */
public void write(PDDocument doc, long idTime) throws COSVisitorException {
    document = doc;
    if (incrementalUpdate) {
        prepareIncrement(doc);
    }

    // if the document says we should remove encryption, then we shouldn't encrypt
    if (doc.isAllSecurityToBeRemoved()) {
        this.willEncrypt = false;
        // also need to get rid of the "Encrypt" in the trailer so readers 
        // don't try to decrypt a document which is not encrypted
        COSDocument cosDoc = doc.getDocument();
        COSDictionary trailer = cosDoc.getTrailer();
        trailer.removeItem(COSName.ENCRYPT);
    } else {
        SecurityHandler securityHandler = document.getSecurityHandler();
        if (securityHandler != null) {
            try {
                securityHandler.prepareDocumentForEncryption(document);
                this.willEncrypt = true;
            } catch (IOException e) {
                throw new COSVisitorException(e);
            } catch (CryptographyException e) {
                throw new COSVisitorException(e);
            }
        } else {
            this.willEncrypt = false;
        }
    }

    COSDocument cosDoc = document.getDocument();
    COSDictionary trailer = cosDoc.getTrailer();
    COSArray idArray = (COSArray) trailer.getDictionaryObject(COSName.ID);
    if (idArray == null || incrementalUpdate) {
        try {

            //algorithm says to use time/path/size/values in doc to generate
            //the id.  We don't have path or size, so do the best we can
            MessageDigest md = MessageDigest.getInstance("MD5");
            md.update(Long.toString(idTime).getBytes("ISO-8859-1"));
            COSDictionary info = (COSDictionary) trailer.getDictionaryObject(COSName.INFO);
            if (info != null) {
                Iterator<COSBase> values = info.getValues().iterator();
                while (values.hasNext()) {
                    md.update(values.next().toString().getBytes("ISO-8859-1"));
                }
            }
            idArray = new COSArray();
            COSString id = new COSString(md.digest());
            idArray.add(id);
            idArray.add(id);
            trailer.setItem(COSName.ID, idArray);
        } catch (NoSuchAlgorithmException e) {
            throw new COSVisitorException(e);
        } catch (UnsupportedEncodingException e) {
            throw new COSVisitorException(e);
        }
    }
    cosDoc.accept(this);
}

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