org.apache.poi.hslf.usermodel

Class HSLFSlideShowEncrypted

java.lang.Object

org.apache.poi.hslf.usermodel.HSLFSlideShowEncrypted

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

@Internal
public class HSLFSlideShowEncrypted
extends java.lang.Object
implements java.io.Closeable

This class provides helper functions for encrypted PowerPoint documents.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	HSLFSlideShowEncrypted(byte[] docstream, java.util.NavigableMap<java.lang.Integer,Record> recordMap)
protected	HSLFSlideShowEncrypted(DocumentEncryptionAtom dea)

Method Summary

Modifier and Type	Method and Description
protected static Record[]	addEncryptionRecord(Record[] records, DocumentEncryptionAtom dea)
void	close()
protected void	decryptPicture(byte[] pictstream, int offset)
protected void	decryptRecord(byte[] docstream, int persistId, int offset)
protected void	encryptPicture(byte[] pictstream, int offset)
protected java.io.OutputStream	encryptRecord(java.io.OutputStream plainStream, int persistId, Record record)
DocumentEncryptionAtom	getDocumentEncryptionAtom()
protected EncryptionInfo	getEncryptionInfo()
protected static Record[]	normalizeRecords(Record[] records) remove duplicated UserEditAtoms and merge PersistPtrHolder.
protected static Record[]	removeEncryptionRecord(Record[] records)
protected Record[]	updateEncryptionRecord(Record[] records)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HSLFSlideShowEncrypted

protected HSLFSlideShowEncrypted(DocumentEncryptionAtom dea)

HSLFSlideShowEncrypted

protected HSLFSlideShowEncrypted(byte[] docstream,
                                 java.util.NavigableMap<java.lang.Integer,Record> recordMap)

Method Detail

getDocumentEncryptionAtom

public DocumentEncryptionAtom getDocumentEncryptionAtom()

getEncryptionInfo

protected EncryptionInfo getEncryptionInfo()

encryptRecord

protected java.io.OutputStream encryptRecord(java.io.OutputStream plainStream,
                                             int persistId,
                                             Record record)

decryptRecord

protected void decryptRecord(byte[] docstream,
                             int persistId,
                             int offset)

decryptPicture

protected void decryptPicture(byte[] pictstream,
                              int offset)

encryptPicture

protected void encryptPicture(byte[] pictstream,
                              int offset)

updateEncryptionRecord

protected Record[] updateEncryptionRecord(Record[] records)

normalizeRecords

protected static Record[] normalizeRecords(Record[] records)

remove duplicated UserEditAtoms and merge PersistPtrHolder. Before this method is called, make sure that the offsets are correct, i.e. call HSLFSlideShowImpl.updateAndWriteDependantRecords(OutputStream, Map)

removeEncryptionRecord

protected static Record[] removeEncryptionRecord(Record[] records)

addEncryptionRecord

protected static Record[] addEncryptionRecord(Record[] records,
                                              DocumentEncryptionAtom dea)

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Throws:

java.io.IOException