92 lines
3.2 KiB
Java
92 lines
3.2 KiB
Java
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package org.apache.poi.ddf;
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import org.apache.poi.util.LittleEndian;
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import org.apache.poi.hssf.record.RecordFormatException;
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import java.util.List;
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import java.util.ArrayList;
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import java.util.Iterator;
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/**
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* Generates a property given a reference into the byte array storing that property.
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*
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* @author Glen Stampoultzis
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*/
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public class EscherPropertyFactory
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{
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/**
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* Create new properties from a byte array.
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*
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* @param data The byte array containing the property
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* @param offset The starting offset into the byte array
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* @return The new properties
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*/
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public List createProperties( byte[] data, int offset, short numProperties )
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{
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List results = new ArrayList();
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int pos = offset;
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int complexBytes = 0;
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// while ( bytesRemaining >= 6 )
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for (int i = 0; i < numProperties; i++)
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{
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short propId;
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int propData;
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propId = LittleEndian.getShort( data, pos );
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propData = LittleEndian.getInt( data, pos + 2 );
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short propNumber = (short) ( propId & (short) 0x3FFF );
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boolean isComplex = ( propId & (short) 0x8000 ) != 0;
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boolean isBlipId = ( propId & (short) 0x4000 ) != 0;
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if ( isComplex )
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complexBytes = propData;
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else
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complexBytes = 0;
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byte propertyType = EscherProperties.getPropertyType( (short) propNumber );
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if ( propertyType == EscherPropertyMetaData.TYPE_BOOLEAN )
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results.add( new EscherBoolProperty( propNumber, propData ) );
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else if ( propertyType == EscherPropertyMetaData.TYPE_RGB )
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results.add( new EscherRGBProperty( propNumber, propData ) );
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else if ( propertyType == EscherPropertyMetaData.TYPE_SHAPEPATH )
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results.add( new EscherShapePathProperty( propNumber, propData ) );
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else
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{
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if ( !isComplex )
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results.add( new EscherSimpleProperty( propNumber, propData ) );
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else
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{
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if ( propertyType == EscherPropertyMetaData.TYPE_ARRAY)
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results.add( new EscherArrayProperty( propId, new byte[propData]) );
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else
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results.add( new EscherComplexProperty( propId, new byte[propData]) );
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}
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}
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pos += 6;
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// bytesRemaining -= 6 + complexBytes;
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}
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// Get complex data
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for ( Iterator iterator = results.iterator(); iterator.hasNext(); )
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{
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EscherProperty p = (EscherProperty) iterator.next();
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if (p instanceof EscherComplexProperty)
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{
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if (p instanceof EscherArrayProperty)
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{
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pos += ((EscherArrayProperty)p).setArrayData(data, pos);
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}
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else
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{
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byte[] complexData = ((EscherComplexProperty)p).getComplexData();
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System.arraycopy(data, pos, complexData, 0, complexData.length);
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pos += complexData.length;
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}
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}
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}
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return results;
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}
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}
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