Example usage for com.itextpdf.text.xml.xmp XmpSchema getXmlns

Introduction

In this page you can find the example usage for com.itextpdf.text.xml.xmp XmpSchema getXmlns.

Prototype

public String getXmlns() 

Source Link

Usage

From source file:org.crossref.pdfmark.XmpUtils.java

License:Open Source License

/** 
 * Combines the RDF description blocks from left and right. Those from
 * right will overwrite those from left in the case that left and right
 * contain description blocks with the same namespace.
 *//* w w w.j  a v  a 2s.co m*/
public static byte[] mergeXmp(byte[] left, byte[] right) throws XmpException {
    if (left == null || left.length == 0) {
        ByteArrayOutputStream bout = new ByteArrayOutputStream();
        try {
            XmpWriter writer = new XmpWriter(bout);
            for (XmpSchema schema : parseSchemata(right)) {
                writer.addRdfDescription(schema);
            }
            writer.close();
        } catch (IOException e) {
            throw new XmpException(e);
        }
        return bout.toByteArray();
    }

    if (right == null || right.length == 0) {
        ByteArrayOutputStream bout = new ByteArrayOutputStream();
        try {
            XmpWriter writer = new XmpWriter(bout);
            for (XmpSchema schema : parseSchemata(left)) {
                writer.addRdfDescription(schema);
            }
            writer.close();
        } catch (IOException e) {
            throw new XmpException(e);
        }
        return bout.toByteArray();
    }

    XmpSchema[] leftSchemata = parseSchemata(left);
    XmpSchema[] rightSchemata = parseSchemata(right);
    ByteArrayOutputStream bout = new ByteArrayOutputStream();

    String[] noWriteList = new String[rightSchemata.length];
    for (int i = 0; i < noWriteList.length; i++) {
        noWriteList[i] = rightSchemata[i].getXmlns();
    }

    try {
        XmpWriter writer = new XmpWriter(bout);
        for (XmpSchema schema : leftSchemata) {
            boolean found = false;
            for (String checkAgainst : noWriteList) {
                if (schema.getXmlns().equals(checkAgainst)) {
                    found = true;
                    break;
                }
            }

            if (!found) {
                writer.addRdfDescription(schema);
            }
        }
        for (XmpSchema schema : rightSchemata) {
            writer.addRdfDescription(schema);
        }
        writer.close();
        return bout.toByteArray();
    } catch (IOException e) {
        throw new XmpException(e);
    }
}

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From source file:org.crossref.pdfmark.XmpUtils.java

License:Open Source License

/**
 * Copy key value pairs from PDFX namespace into a PDF's document information
 * dictionary.//from  w  ww .  j  ava 2 s.  c  om
 */
public static Map<String, String> toInfo(byte[] xmp) throws XmpException {
    try {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setNamespaceAware(true);

        Map<String, String> info = new HashMap<String, String>();

        XmpSchema[] schemata = XmpUtils.parseSchemata(xmp);
        for (XmpSchema schema : schemata) {
            if (schema.getXmlns().contains("pdfx")) {
                for (Entry<Object, Object> entry : schema.entrySet()) {
                    Object value = entry.getValue();

                    String key = (String) entry.getKey();
                    String[] parts = key.split(":");
                    String infoKey = parts.length == 2 ? parts[1] : parts[0];

                    String val = (String) entry.getValue();

                    if (val.toLowerCase().contains("<rdf:seq>") || val.toLowerCase().contains("<rdf:bag>")) {
                        val = "<xml xmlns:rdf=\"rdf\">" + val + "</xml>";
                        DocumentBuilder builder = factory.newDocumentBuilder();
                        Document doc = builder.parse(new ByteArrayInputStream(val.getBytes()));

                        NodeList nodes = doc.getElementsByTagName("rdf:li");
                        for (int i = 0; i < nodes.getLength(); i++) {
                            Element item = (Element) nodes.item(i);
                            info.put(infoKey + "[" + (i + 1) + "]", item.getTextContent());
                        }
                    } else {
                        info.put(infoKey, (String) value);
                    }
                }
            }
        }

        return info;
    } catch (DOMException e) {
        throw new XmpException(e);
    } catch (IOException e) {
        throw new XmpException(e);
    } catch (SAXException e) {
        throw new XmpException(e);
    } catch (ParserConfigurationException e) {
        throw new XmpException(e);
    }
}

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