/**
* package scoped constructor
*
* @param stream the DocumentInputStream, freshly opened
* @param path the path of the document
* @param documentName the name of the document
*/
public POIFSReaderEvent(DocumentInputStream stream,
POIFSDocumentPath path, String documentName)
{
this.stream = stream;
this.path = path;
this.documentName = documentName;
}
/// <summary>
/// Initializes a new instance of the <see cref="POIFSWriterEvent"/> class.
/// </summary>
/// <param name="stream">the POIFSDocumentWriter, freshly opened</param>
/// <param name="path">the path of the document</param>
/// <param name="documentName">the name of the document</param>
/// <param name="limit">the limit, in bytes, that can be written to the stream</param>
public POIFSWriterEventArgs(DocumentOutputStream stream, POIFSDocumentPath path, string documentName, int limit)
{
this.stream = stream;
this.path = path;
this.documentName = documentName;
this.limit = limit;
}
/// <summary>
/// Initializes a new instance of the <see cref="DocumentDescriptor"/> class.
/// </summary>
/// <param name="path">the Document path</param>
/// <param name="name">the Document name</param>
public DocumentDescriptor(POIFSDocumentPath path, String name)
{
if (path == null)
{
throw new NullReferenceException("path must not be null");
}
if (name == null)
{
throw new NullReferenceException("name must not be null");
}
if (name.Length== 0)
{
throw new ArgumentException("name cannot be empty");
}
this.path = path;
this.name = name;
}
/**
* Register a POIFSReaderListener for a particular document
*
* @param listener the listener
* @param path the path of the document of interest
* @param documentName the name of the document of interest
*/
public void RegisterListener(POIFSReaderListener listener,
POIFSDocumentPath path,
String documentName)
{
if (!omnivorousListeners.Contains(listener))
{
// not an omnivorous listener (if it was, this method is a
// no-op)
ArrayList descriptors = (ArrayList)selectiveListeners[listener];
if (descriptors == null)
{
// this listener has not Registered before
descriptors = new ArrayList();
selectiveListeners[listener] = descriptors;
}
DocumentDescriptor descriptor = new DocumentDescriptor(path,
documentName);
if (descriptors.Add(descriptor) >= 0)
{
// this listener wasn't alReady listening for this
// document -- Add the listener to the Set of
// listeners for this document
ArrayList listeners =
(ArrayList)chosenDocumentDescriptors[descriptor];
if (listeners == null)
{
// nobody was listening for this document before
listeners = new ArrayList();
chosenDocumentDescriptors[descriptor] = listeners;
}
listeners.Add(listener);
}
}
}
public POIFSReaderEventArgs(string name, POIFSDocumentPath path, POIFSDocument document)
{
this.name = name;
this.path = path;
this.document = document;
}
/// <summary>
/// Processes the properties.
/// </summary>
/// <param name="small_blocks">The small_blocks.</param>
/// <param name="big_blocks">The big_blocks.</param>
/// <param name="properties">The properties.</param>
/// <param name="path">The path.</param>
/// <returns></returns>
private List<DocumentDescriptor> ProcessProperties(BlockList small_blocks,
BlockList big_blocks,
IEnumerator properties,
POIFSDocumentPath path)
{
List<DocumentDescriptor> documents =
new List<DocumentDescriptor>();
while (properties.MoveNext())
{
Property property = (Property)properties.Current;
String name = property.Name;
if (property.IsDirectory)
{
POIFSDocumentPath new_path = new POIFSDocumentPath(path,
new String[]
{
name
});
ProcessProperties(
small_blocks, big_blocks,
((DirectoryProperty)property).Children, new_path);
}
else
{
int startBlock = property.StartBlock;
IEnumerator listeners = registry.GetListeners(path, name);
POIFSDocument document = null;
if (listeners.MoveNext())
{
int size = property.Size;
if (property.ShouldUseSmallBlocks)
{
document =
new POIFSDocument(name, small_blocks
.FetchBlocks(startBlock, -1), size);
}
else
{
document =
new POIFSDocument(name, big_blocks
.FetchBlocks(startBlock, -1), size);
}
POIFSReaderListener listener =
(POIFSReaderListener)listeners.Current;
listener.ProcessPOIFSReaderEvent(
new POIFSReaderEvent(
new DocumentInputStream(document), path,
name));
while (listeners.MoveNext())
{
listener =
(POIFSReaderListener)listeners.Current;
listener.ProcessPOIFSReaderEvent(
new POIFSReaderEvent(
new DocumentInputStream(document), path,
name));
}
}
else
{
// consume the document's data and discard it
if (property.ShouldUseSmallBlocks)
{
small_blocks.FetchBlocks(startBlock, -1);
}
else
{
big_blocks.FetchBlocks(startBlock, -1);
}
documents.Add(
new DocumentDescriptor(path, name));
//fire event
//OnStreamReaded(new POIFSReaderEventArgs(name, path, document));
}
}
}
return documents;
}
/**
* Register a POIFSReaderListener for a document in the specified
* directory
*
* @param listener the listener to be registered
* @param path the document path; if null, the root directory is
* assumed
* @param name the document name
*
* @exception NullPointerException if listener is null or name is
* null or empty
* @exception IllegalStateException if read() has already been
* called
*/
public void RegisterListener(POIFSReaderListener listener,
POIFSDocumentPath path,
String name)
{
if ((listener == null) || (name == null) || (name.Length == 0))
{
throw new NullReferenceException();
}
if (registryClosed)
{
throw new InvalidOperationException();
}
registry.RegisterListener(listener,
(path == null) ? new POIFSDocumentPath()
: path, name);
}
/**
* Get am iterator of listeners for a particular document
*
* @param path the document path
* @param name the name of the document
*
* @return an Iterator POIFSReaderListeners; may be empty
*/
public IEnumerator GetListeners(POIFSDocumentPath path, String name)
{
ArrayList rval = new ArrayList(omnivorousListeners);
ArrayList selectiveListeners =
(ArrayList)chosenDocumentDescriptors[new DocumentDescriptor(path,
name)];
if (selectiveListeners != null)
{
rval.AddRange(selectiveListeners);
}
return rval.GetEnumerator();
}
/// <summary>
/// constructor that adds additional subdirectories to an existing
/// path
/// </summary>
/// <param name="path">the existing path</param>
/// <param name="components">the additional subdirectory names to be added</param>
public POIFSDocumentPath(POIFSDocumentPath path, string[] components)
{
if (components == null)
{
this.components = new string[path.components.Length];
}
else
{
this.components = new string[path.components.Length + components.Length];
}
for (int i = 0; i < path.components.Length; i++)
{
this.components[i] = path.components[i];
}
if (components != null)
{
for (int j = 0; j < components.Length; j++)
{
if (components[j] == null)
{
throw new ArgumentException("components cannot contain null or empty strings");
}
if (components[j].Length == 0)
{
// throw new ArgumentException("components cannot contain null or empty strings");
}
this.components[j + path.components.Length] = components[j];
}
}
}