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Apache POI - Java API To Access Microsoft Format Files
/*
* ====================================================================
* 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.hpsf;
import org.apache.poi.util.Internal;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.POILogFactory;
import org.apache.poi.util.POILogger;
@Internal
class TypedPropertyValue
{
private static final POILogger logger = POILogFactory
.getLogger( TypedPropertyValue.class );
private int _type;
private Object _value;
TypedPropertyValue()
{
}
TypedPropertyValue( byte[] data, int startOffset )
{
read( data, startOffset );
}
TypedPropertyValue( int type, Object value )
{
_type = type;
_value = value;
}
Object getValue()
{
return _value;
}
int read( byte[] data, int startOffset )
{
int offset = startOffset;
_type = LittleEndian.getShort( data, offset );
offset += LittleEndian.SHORT_SIZE;
short padding = LittleEndian.getShort( data, offset );
offset += LittleEndian.SHORT_SIZE;
if ( padding != 0 )
{
logger.log( POILogger.WARN, "TypedPropertyValue padding at offset "
+ offset + " MUST be 0, but it's value is " + padding );
}
offset += readValue( data, offset );
return offset - startOffset;
}
int readValue( byte[] data, int offset ) // NOSONAR
{
switch ( _type )
{
case Variant.VT_EMPTY:
case Variant.VT_NULL:
_value = null;
return 0;
case Variant.VT_R4:
case Variant.VT_I2:
_value = Short.valueOf( LittleEndian.getShort( data, offset ) );
return 4;
case Variant.VT_INT:
case Variant.VT_I4:
_value = Integer.valueOf( LittleEndian.getInt( data, offset ) );
return 4;
case Variant.VT_R8:
_value = Double.valueOf( LittleEndian.getDouble( data, offset ) );
return 8;
case Variant.VT_CY:
_value = new Currency( data, offset );
return Currency.SIZE;
case Variant.VT_DATE:
_value = new Date( data, offset );
return Date.SIZE;
case Variant.VT_BSTR:
_value = new CodePageString( data, offset );
return ( (CodePageString) _value ).getSize();
case Variant.VT_BOOL:
_value = new VariantBool( data, offset );
return VariantBool.SIZE;
case Variant.VT_DECIMAL:
_value = new Decimal( data, offset );
return Decimal.SIZE;
case Variant.VT_I1:
_value = Byte.valueOf( data[offset] );
return 1;
case Variant.VT_UI1:
_value = Short.valueOf( LittleEndian.getUByte( data, offset ) );
return 2;
case Variant.VT_UI2:
_value = Integer.valueOf( LittleEndian.getUShort( data, offset ) );
return 4;
case Variant.VT_UINT:
case Variant.VT_UI4:
case Variant.VT_ERROR:
_value = Long.valueOf( LittleEndian.getUInt( data, offset ) );
return 4;
case Variant.VT_I8:
_value = Long.valueOf( LittleEndian.getLong( data, offset ) );
return 8;
case Variant.VT_UI8:
_value = LittleEndian.getByteArray( data, offset, 8 );
return 8;
case Variant.VT_LPSTR:
_value = new CodePageString( data, offset );
return ( (CodePageString) _value ).getSize();
case Variant.VT_LPWSTR:
_value = new UnicodeString( data, offset );
return ( (UnicodeString) _value ).getSize();
case Variant.VT_FILETIME:
_value = new Filetime( data, offset );
return Filetime.SIZE;
case Variant.VT_BLOB:
_value = new Blob( data, offset );
return ( (Blob) _value ).getSize();
case Variant.VT_STREAM:
case Variant.VT_STORAGE:
case Variant.VT_STREAMED_OBJECT:
case Variant.VT_STORED_OBJECT:
_value = new IndirectPropertyName( data, offset );
return ( (IndirectPropertyName) _value ).getSize();
case Variant.VT_BLOB_OBJECT:
_value = new Blob( data, offset );
return ( (Blob) _value ).getSize();
case Variant.VT_CF:
_value = new ClipboardData( data, offset );
return ( (ClipboardData) _value ).getSize();
case Variant.VT_CLSID:
_value = new GUID( data, offset );
return GUID.SIZE;
case Variant.VT_VERSIONED_STREAM:
_value = new VersionedStream( data, offset );
return ( (VersionedStream) _value ).getSize();
case Variant.VT_VECTOR | Variant.VT_I2:
case Variant.VT_VECTOR | Variant.VT_I4:
case Variant.VT_VECTOR | Variant.VT_R4:
case Variant.VT_VECTOR | Variant.VT_R8:
case Variant.VT_VECTOR | Variant.VT_CY:
case Variant.VT_VECTOR | Variant.VT_DATE:
case Variant.VT_VECTOR | Variant.VT_BSTR:
case Variant.VT_VECTOR | Variant.VT_ERROR:
case Variant.VT_VECTOR | Variant.VT_BOOL:
case Variant.VT_VECTOR | Variant.VT_VARIANT:
case Variant.VT_VECTOR | Variant.VT_I1:
case Variant.VT_VECTOR | Variant.VT_UI1:
case Variant.VT_VECTOR | Variant.VT_UI2:
case Variant.VT_VECTOR | Variant.VT_UI4:
case Variant.VT_VECTOR | Variant.VT_I8:
case Variant.VT_VECTOR | Variant.VT_UI8:
case Variant.VT_VECTOR | Variant.VT_LPSTR:
case Variant.VT_VECTOR | Variant.VT_LPWSTR:
case Variant.VT_VECTOR | Variant.VT_FILETIME:
case Variant.VT_VECTOR | Variant.VT_CF:
case Variant.VT_VECTOR | Variant.VT_CLSID:
_value = new Vector( (short) ( _type & 0x0FFF ) );
return ( (Vector) _value ).read( data, offset );
case Variant.VT_ARRAY | Variant.VT_I2:
case Variant.VT_ARRAY | Variant.VT_I4:
case Variant.VT_ARRAY | Variant.VT_R4:
case Variant.VT_ARRAY | Variant.VT_R8:
case Variant.VT_ARRAY | Variant.VT_CY:
case Variant.VT_ARRAY | Variant.VT_DATE:
case Variant.VT_ARRAY | Variant.VT_BSTR:
case Variant.VT_ARRAY | Variant.VT_ERROR:
case Variant.VT_ARRAY | Variant.VT_BOOL:
case Variant.VT_ARRAY | Variant.VT_VARIANT:
case Variant.VT_ARRAY | Variant.VT_DECIMAL:
case Variant.VT_ARRAY | Variant.VT_I1:
case Variant.VT_ARRAY | Variant.VT_UI1:
case Variant.VT_ARRAY | Variant.VT_UI2:
case Variant.VT_ARRAY | Variant.VT_UI4:
case Variant.VT_ARRAY | Variant.VT_INT:
case Variant.VT_ARRAY | Variant.VT_UINT:
_value = new Array();
return ( (Array) _value ).read( data, offset );
default:
throw new UnsupportedOperationException(
"Unknown (possibly, incorrect) TypedPropertyValue type: "
+ _type );
}
}
int readValuePadded( byte[] data, int offset )
{
int nonPadded = readValue( data, offset );
return ( nonPadded & 0x03 ) == 0 ? nonPadded : nonPadded
+ ( 4 - ( nonPadded & 0x03 ) );
}
}