org.apache.poi.ddf.EscherPropertyFactory Maven / Gradle / Ivy
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(the "License"); you may not use this file except in compliance with
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package org.apache.poi.ddf;
import org.apache.poi.util.LittleEndian;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* Generates a property given a reference into the byte array storing that property.
*
* @author Glen Stampoultzis
*/
public final class EscherPropertyFactory {
/**
* Create new properties from a byte array.
*
* @param data The byte array containing the property
* @param offset The starting offset into the byte array
* @return The new properties
*/
public List createProperties(byte[] data, int offset, short numProperties) {
List results = new ArrayList();
int pos = offset;
// while ( bytesRemaining >= 6 )
for (int i = 0; i < numProperties; i++) {
short propId;
int propData;
propId = LittleEndian.getShort( data, pos );
propData = LittleEndian.getInt( data, pos + 2 );
short propNumber = (short) ( propId & (short) 0x3FFF );
boolean isComplex = ( propId & (short) 0x8000 ) != 0;
boolean isBlipId = ( propId & (short) 0x4000 ) != 0;
byte propertyType = EscherProperties.getPropertyType(propNumber);
if ( propertyType == EscherPropertyMetaData.TYPE_BOOLEAN )
results.add( new EscherBoolProperty( propId, propData ) );
else if ( propertyType == EscherPropertyMetaData.TYPE_RGB )
results.add( new EscherRGBProperty( propId, propData ) );
else if ( propertyType == EscherPropertyMetaData.TYPE_SHAPEPATH )
results.add( new EscherShapePathProperty( propId, propData ) );
else
{
if ( !isComplex )
results.add( new EscherSimpleProperty( propId, propData ) );
else
{
if ( propertyType == EscherPropertyMetaData.TYPE_ARRAY)
results.add( new EscherArrayProperty( propId, new byte[propData]) );
else
results.add( new EscherComplexProperty( propId, new byte[propData]) );
}
}
pos += 6;
// bytesRemaining -= 6 + complexBytes;
}
// Get complex data
for (Iterator iterator = results.iterator(); iterator.hasNext();) {
EscherProperty p = iterator.next();
if (p instanceof EscherComplexProperty) {
if (p instanceof EscherArrayProperty) {
pos += ((EscherArrayProperty)p).setArrayData(data, pos);
} else {
byte[] complexData = ((EscherComplexProperty)p).getComplexData();
System.arraycopy(data, pos, complexData, 0, complexData.length);
pos += complexData.length;
}
}
}
return results;
}
}