| /* ==================================================================== |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| ==================================================================== */ |
| package org.apache.poi.hwpf.model; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| |
| import org.apache.poi.hwpf.model.types.FRDAbstractType; |
| import org.apache.poi.util.Internal; |
| |
| /** |
| * Holds information about document notes (footnotes or ending notes) |
| */ |
| @Internal |
| public class NotesTables |
| { |
| private PlexOfCps descriptors = new PlexOfCps(FRDAbstractType.getSize() ); |
| |
| private final NoteType noteType; |
| |
| private PlexOfCps textPositions = new PlexOfCps( 0 ); |
| |
| public NotesTables( final NoteType noteType ) |
| { |
| this.noteType = noteType; |
| textPositions |
| .addProperty( new GenericPropertyNode( 0, 1, new byte[0] ) ); |
| } |
| |
| public NotesTables( final NoteType noteType, byte[] tableStream, |
| FileInformationBlock fib ) |
| { |
| this.noteType = noteType; |
| read( tableStream, fib ); |
| } |
| |
| public GenericPropertyNode getDescriptor( int index ) |
| { |
| return descriptors.getProperty( index ); |
| } |
| |
| public int getDescriptorsCount() |
| { |
| return descriptors.length(); |
| } |
| |
| public GenericPropertyNode getTextPosition( int index ) |
| { |
| return textPositions.getProperty( index ); |
| } |
| |
| private void read( byte[] tableStream, FileInformationBlock fib ) |
| { |
| int referencesStart = fib.getNotesDescriptorsOffset( noteType ); |
| int referencesLength = fib.getNotesDescriptorsSize( noteType ); |
| |
| if ( referencesStart != 0 && referencesLength != 0 ) |
| this.descriptors = new PlexOfCps( tableStream, referencesStart, |
| referencesLength, FRDAbstractType.getSize() ); |
| |
| int textPositionsStart = fib.getNotesTextPositionsOffset( noteType ); |
| int textPositionsLength = fib.getNotesTextPositionsSize( noteType ); |
| |
| if ( textPositionsStart != 0 && textPositionsLength != 0 ) |
| this.textPositions = new PlexOfCps( tableStream, |
| textPositionsStart, textPositionsLength, 0 ); |
| } |
| |
| public void writeRef( FileInformationBlock fib, ByteArrayOutputStream tableStream ) |
| throws IOException |
| { |
| if ( descriptors == null || descriptors.length() == 0 ) |
| { |
| fib.setNotesDescriptorsOffset( noteType, tableStream.size() ); |
| fib.setNotesDescriptorsSize( noteType, 0 ); |
| return; |
| } |
| |
| int start = tableStream.size(); |
| tableStream.write( descriptors.toByteArray() ); |
| int end = tableStream.size(); |
| |
| fib.setNotesDescriptorsOffset( noteType, start ); |
| fib.setNotesDescriptorsSize( noteType, end - start ); |
| } |
| |
| public void writeTxt( FileInformationBlock fib, ByteArrayOutputStream tableStream ) |
| throws IOException |
| { |
| if ( textPositions == null || textPositions.length() == 0 ) |
| { |
| fib.setNotesTextPositionsOffset( noteType, tableStream.size() ); |
| fib.setNotesTextPositionsSize( noteType, 0 ); |
| return; |
| } |
| |
| int start = tableStream.size(); |
| tableStream.write( textPositions.toByteArray() ); |
| int end = tableStream.size(); |
| |
| fib.setNotesTextPositionsOffset( noteType, start ); |
| fib.setNotesTextPositionsSize( noteType, end - start ); |
| } |
| } |