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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.util.Arrays;
import org.apache.poi.hwpf.usermodel.CharacterProperties;
import org.apache.poi.hwpf.usermodel.ParagraphProperties;
import org.apache.poi.util.IOUtils;
import org.apache.poi.util.Internal;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.POILogFactory;
import org.apache.poi.util.POILogger;
import org.apache.poi.util.StringUtil;
/**
* Comment me
*
* @author Ryan Ackley
*/
@Internal
public final class StyleDescription {
private static final POILogger logger = POILogFactory.getLogger(StyleDescription.class);
//arbitrarily selected; may need to increase
private static final int MAX_RECORD_LENGTH = 100_000;
private final static int PARAGRAPH_STYLE = 1;
private final static int CHARACTER_STYLE = 2;
// private final static int TABLE_STYLE = 3;
// private final static int NUMBERING_STYLE = 4;
private int _baseLength;
private StdfBase _stdfBase;
private StdfPost2000 _stdfPost2000;
UPX[] _upxs;
String _name;
@Deprecated
ParagraphProperties _pap;
@Deprecated
CharacterProperties _chp;
public StyleDescription() {
// _pap = new ParagraphProperties();
// _chp = new CharacterProperties();
}
public StyleDescription(byte[] std, int baseLength, int offset, boolean word9) {
_baseLength = baseLength;
int nameStart = offset + baseLength;
boolean readStdfPost2000 = false;
if (baseLength == 0x0012) {
readStdfPost2000 = true;
} else if (baseLength == 0x000A) {
readStdfPost2000 = false;
} else {
logger.log(POILogger.WARN,
"Style definition has non-standard size of ",
Integer.valueOf(baseLength));
}
_stdfBase = new StdfBase(std, offset);
offset += StdfBase.getSize();
if (readStdfPost2000) {
_stdfPost2000 = new StdfPost2000(std, offset);
// offset += StdfPost2000.getSize();
}
//first byte(s) of variable length section of std is the length of the
//style name and aliases string
int nameLength = 0;
int multiplier = 1;
if (word9) {
nameLength = LittleEndian.getShort(std, nameStart);
multiplier = 2;
nameStart += LittleEndian.SHORT_SIZE;
} else {
nameLength = std[nameStart];
}
_name = StringUtil.getFromUnicodeLE(std, nameStart, (nameLength * multiplier) / 2);
//length then null terminator.
// the spec only refers to two possible upxs but it mentions
// that more may be added in the future
int varOffset = ((nameLength + 1) * multiplier) + nameStart;
int countOfUPX = _stdfBase.getCupx();
_upxs = new UPX[countOfUPX];
for (int x = 0; x < countOfUPX; x++) {
int upxSize = LittleEndian.getShort(std, varOffset);
varOffset += LittleEndian.SHORT_SIZE;
byte[] upx = IOUtils.safelyAllocate(upxSize, Short.MAX_VALUE);
System.arraycopy(std, varOffset, upx, 0, upxSize);
_upxs[x] = new UPX(upx);
varOffset += upxSize;
// the upx will always start on a word boundary.
if ((upxSize & 1) == 1) {
++varOffset;
}
}
}
public int getBaseStyle() {
return _stdfBase.getIstdBase();
}
public byte[] getCHPX() {
switch (_stdfBase.getStk()) {
case PARAGRAPH_STYLE:
if (_upxs.length > 1) {
return _upxs[1].getUPX();
}
return null;
case CHARACTER_STYLE:
return _upxs[0].getUPX();
default:
return null;
}
}
public byte[] getPAPX() {
switch (_stdfBase.getStk()) {
case PARAGRAPH_STYLE:
return _upxs[0].getUPX();
default:
return null;
}
}
@Deprecated
public ParagraphProperties getPAP() {
return _pap;
}
@Deprecated
public CharacterProperties getCHP() {
return _chp;
}
@Deprecated
void setPAP(ParagraphProperties pap) {
_pap = pap;
}
@Deprecated
void setCHP(CharacterProperties chp) {
_chp = chp;
}
public String getName() {
return _name;
}
public byte[] toByteArray() {
// size equals _baseLength bytes for known variables plus 2 bytes for name
// length plus name length * 2 plus 2 bytes for null plus upx's preceded by
// length
int size = _baseLength + 2 + ((_name.length() + 1) * 2);
// determine the size needed for the upxs. They always fall on word
// boundaries.
size += _upxs[0].size() + 2;
for (int x = 1; x < _upxs.length; x++) {
size += _upxs[x - 1].size() % 2;
size += _upxs[x].size() + 2;
}
byte[] buf = new byte[size];
_stdfBase.serialize(buf, 0);
int offset = _baseLength;
char[] letters = _name.toCharArray();
LittleEndian.putShort(buf, _baseLength, (short) letters.length);
offset += LittleEndian.SHORT_SIZE;
for (int x = 0; x < letters.length; x++) {
LittleEndian.putShort(buf, offset, (short) letters[x]);
offset += LittleEndian.SHORT_SIZE;
}
// get past the null delimiter for the name.
offset += LittleEndian.SHORT_SIZE;
for (int x = 0; x < _upxs.length; x++) {
short upxSize = (short) _upxs[x].size();
LittleEndian.putShort(buf, offset, upxSize);
offset += LittleEndian.SHORT_SIZE;
System.arraycopy(_upxs[x].getUPX(), 0, buf, offset, upxSize);
offset += upxSize + (upxSize % 2);
}
return buf;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((_name == null) ? 0 : _name.hashCode());
result = prime * result
+ ((_stdfBase == null) ? 0 : _stdfBase.hashCode());
result = prime * result + Arrays.hashCode(_upxs);
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
StyleDescription other = (StyleDescription) obj;
if (_name == null) {
if (other._name != null)
return false;
} else if (!_name.equals(other._name))
return false;
if (_stdfBase == null) {
if (other._stdfBase != null)
return false;
} else if (!_stdfBase.equals(other._stdfBase))
return false;
if (!Arrays.equals(_upxs, other._upxs))
return false;
return true;
}
@Override
public String toString() {
StringBuilder result = new StringBuilder();
result.append("[STD]: '");
result.append(_name);
result.append("'");
result.append(("\nStdfBase:\t" + _stdfBase).replaceAll("\n",
"\n "));
result.append(("\nStdfPost2000:\t" + _stdfPost2000).replaceAll(
"\n", "\n "));
for (UPX upx : _upxs) {
result.append(("\nUPX:\t" + upx).replaceAll("\n", "\n "));
}
return result.toString();
}
}