Example usage for org.apache.poi.poifs.filesystem DocumentInputStream markSupported

Introduction

In this page you can find the example usage for org.apache.poi.poifs.filesystem DocumentInputStream markSupported.

Prototype

@Override
public boolean markSupported() 

Source Link

Document

Tests if this input stream supports the mark and reset methods.

Usage

From source file:poi.poifs.poibrowser.DocumentDescriptor.java

License:Apache License

/**
 * <p>Creates a {@link DocumentDescriptor}.</p>
 *
 * @param name The stream's name./*from  w  w w.  j a  v a 2s.  co  m*/
 *
 * @param path The stream's path in the POI filesystem hierarchy.
 *
 * @param stream The stream.
 *
 * @param nrOfBytes The maximum number of bytes to display in a
 * dump starting at the beginning of the stream.
 */
public DocumentDescriptor(final String name, final POIFSDocumentPath path, final DocumentInputStream stream,
        final int nrOfBytes) {
    this.name = name;
    this.path = path;
    this.stream = stream;
    try {
        size = stream.available();
        if (stream.markSupported()) {
            stream.mark(nrOfBytes);
            final byte[] b = new byte[nrOfBytes];
            final int read = stream.read(b, 0, Math.min(size, b.length));
            bytes = new byte[read];
            System.arraycopy(b, 0, bytes, 0, read);
            stream.reset();
        }
    } catch (IOException ex) {
        System.out.println(ex);
    }
}

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From source file:poi.poifs.poibrowser.TreeReaderListener.java

License:Apache License

/**
 * <p>A document in the POI filesystem has been opened for
 * reading. This method retrieves properties of the document and
 * adds them to a tree model.</p>/*from  w w  w.j a va 2  s  . c  o m*/
 */
public void processPOIFSReaderEvent(final POIFSReaderEvent event) {
    DocumentDescriptor d;
    final DocumentInputStream is = event.getStream();
    if (!is.markSupported())
        throw new UnsupportedOperationException(is.getClass().getName() + " does not support mark().");

    /* Try do handle this document as a property set. We receive
     * an exception if is no property set and handle it as a
     * document of some other format. We are not concerned about
     * that document's details. */
    try {
        d = new PropertySetDescriptor(event.getName(), event.getPath(), is, nrOfBytes);
    } catch (HPSFException ex) {
        d = new DocumentDescriptor(event.getName(), event.getPath(), is, nrOfBytes);
    } catch (Throwable t) {
        System.err.println("Unexpected exception while processing " + event.getName() + " in "
                + event.getPath().toString());
        t.printStackTrace(System.err);
        throw new RuntimeException(t.getMessage());
    }

    is.close();

    final MutableTreeNode parentNode = getNode(d.path, filename, rootNode);
    final MutableTreeNode nameNode = new DefaultMutableTreeNode(d.name);
    parentNode.insert(nameNode, 0);
    final MutableTreeNode dNode = new DefaultMutableTreeNode(d);
    nameNode.insert(dNode, 0);
}

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