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/* ====================================================================
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.logging.log4j.Logger;
import org.apache.poi.logging.PoiLogManager;
import org.apache.poi.hwpf.model.io.HWPFFileSystem;
import org.apache.poi.util.Internal;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.LittleEndianConsts;
/**
* FontTable or in MS terminology sttbfffn is a common data structure written in all
* Word files. The sttbfffn is an sttbf where each string is an FFN structure instead
* of pascal-style strings. An sttbf is a string Table stored in file. Thus sttbffn
* is like an Sttbf with an array of FFN structures that stores the font name strings
*/
@Internal
public final class FontTable
{
private static final Logger LOG = PoiLogManager.getLogger(FontTable.class);
private short _stringCount;// how many strings are included in the string table
private short _extraDataSz;// size in bytes of the extra data
// added extra facilitator members
private int lcbSttbfffn;// count of bytes in sttbfffn
private int fcSttbfffn;// table stream offset for sttbfffn
// FFN structure containing strings of font names
private Ffn[] _fontNames;
public FontTable(byte[] buf, int offset, int lcbSttbfffn)
{
this.lcbSttbfffn = lcbSttbfffn;
this.fcSttbfffn = offset;
_stringCount = LittleEndian.getShort(buf, offset);
offset += LittleEndianConsts.SHORT_SIZE;
_extraDataSz = LittleEndian.getShort(buf, offset);
offset += LittleEndianConsts.SHORT_SIZE;
_fontNames = new Ffn[_stringCount]; //Ffn corresponds to a Pascal style String in STTBF.
for(int i = 0;i<_stringCount; i++)
{
_fontNames[i] = new Ffn(buf,offset);
offset += _fontNames[i].getSize();
}
}
public short getStringCount()
{
return _stringCount;
}
public short getExtraDataSz()
{
return _extraDataSz;
}
public Ffn[] getFontNames()
{
return _fontNames;
}
public int getSize()
{
return lcbSttbfffn;
}
public String getMainFont(int chpFtc )
{
if(chpFtc >= _stringCount)
{
LOG.atInfo().log("Mismatch in chpFtc with stringCount");
return null;
}
return _fontNames[chpFtc].getMainFontName();
}
public String getAltFont(int chpFtc )
{
if(chpFtc >= _stringCount)
{
LOG.atInfo().log("Mismatch in chpFtc with stringCount");
return null;
}
return _fontNames[chpFtc].getAltFontName();
}
public void setStringCount(short stringCount)
{
this._stringCount = stringCount;
}
@Deprecated
public void writeTo( HWPFFileSystem sys ) throws IOException
{
ByteArrayOutputStream tableStream = sys.getStream( "1Table" );
writeTo( tableStream );
}
public void writeTo( ByteArrayOutputStream tableStream ) throws IOException
{
byte[] buf = new byte[LittleEndianConsts.SHORT_SIZE];
LittleEndian.putShort(buf, 0, _stringCount);
tableStream.write(buf);
LittleEndian.putShort(buf, 0, _extraDataSz);
tableStream.write(buf);
for (Ffn fontName : _fontNames) {
tableStream.write(fontName.toByteArray());
}
}
@Override
public boolean equals(Object other) {
if (!(other instanceof FontTable)) return false;
FontTable o = (FontTable)other;
if (o._stringCount != this._stringCount
|| o._extraDataSz != this._extraDataSz
|| o._fontNames.length != this._fontNames.length
) return false;
for (int i=0; i<o._fontNames.length; i++) {
if (!o._fontNames[i].equals(this._fontNames[i])) return false;
}
return true;
}
@Override
public int hashCode() {
assert false : "hashCode not designed";
return 42; // any arbitrary constant will do
}
}
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