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Bug 60570 - Add rudimentary EMF read-only capability

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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1779493 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Tim Allison 2017-01-19 16:22:29 +00:00
parent 2abd64f3a9
commit f6388c2fff
22 changed files with 1910 additions and 0 deletions
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23
src/java/org/apache/poi/util/IOUtils.java
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@ -251,4 +251,27 @@ public final class IOUtils {
exc ); exc );
} }
} }
/**
* Skips bytes from a stream. Returns -1L if EOF was hit before
* the end of the stream.
*
* @param in inputstream
* @param len length to skip
* @return number of bytes skipped
* @throws IOException on IOException
*/
public static long skipFully(InputStream in, long len) throws IOException {
int total = 0;
while (true) {
long got = in.skip(len-total);
if (got < 0) {
return -1L;
}
total += got;
if (total == len) {
return total;
}
}
}
} }

115
src/scratchpad/src/org/apache/poi/hemf/extractor/HemfExtractor.java Normal file
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@ -0,0 +1,115 @@
/* ====================================================================
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.hemf.extractor;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import org.apache.poi.hemf.record.HemfHeader;
import org.apache.poi.hemf.record.HemfRecord;
import org.apache.poi.hemf.record.HemfRecordType;
import org.apache.poi.util.Internal;
import org.apache.poi.util.LittleEndianInputStream;
import org.apache.poi.util.RecordFormatException;
/**
* Read-only EMF extractor. Lots remain
*/
@Internal
public class HemfExtractor implements Iterable<HemfRecord> {
private HemfHeader header;
private final LittleEndianInputStream stream;
public HemfExtractor(InputStream is) throws IOException {
stream = new LittleEndianInputStream(is);
header = new HemfHeader();
long recordId = stream.readUInt();
long recordSize = stream.readUInt();
header = new HemfHeader();
header.init(stream, recordId, recordSize-8);
}
@Override
public Iterator<HemfRecord> iterator() {
return new HemfRecordIterator();
}
public HemfHeader getHeader() {
return header;
}
private class HemfRecordIterator implements Iterator<HemfRecord> {
private HemfRecord currentRecord = null;
HemfRecordIterator() {
//queue the first non-header record
currentRecord = _next();
}
@Override
public boolean hasNext() {
return currentRecord != null;
}
@Override
public HemfRecord next() {
HemfRecord toReturn = currentRecord;
currentRecord = _next();
return toReturn;
}
private HemfRecord _next() {
if (currentRecord != null && currentRecord.getRecordType().equals(HemfRecordType.eof)) {
return null;
}
long recordId = stream.readUInt();
long recordSize = stream.readUInt();
HemfRecord record = null;
HemfRecordType type = HemfRecordType.getById(recordId);
if (type == null) {
throw new RuntimeException("Undefined record of type:"+recordId);
}
try {
record = type.clazz.newInstance();
} catch (InstantiationException e) {
throw new RuntimeException(e);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
try {
record.init(stream, recordId, recordSize-8);
} catch (IOException e) {
throw new RecordFormatException(e);
}
return record;
}
@Override
public void remove() {
throw new UnsupportedOperationException("Remove not supported");
}
}
}

82
src/scratchpad/src/org/apache/poi/hemf/hemfplus/record/HemfPlusHeader.java Normal file
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@ -0,0 +1,82 @@
/* ====================================================================
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.hemf.hemfplus.record;
import java.io.IOException;
import org.apache.poi.util.Internal;
import org.apache.poi.util.LittleEndian;
@Internal
public class HemfPlusHeader implements HemfPlusRecord {
private int flags;
private long version; //hack for now; replace with EmfPlusGraphicsVersion object
private long emfPlusFlags;
private long logicalDpiX;
private long logicalDpiY;
@Override
public HemfPlusRecordType getRecordType() {
return HemfPlusRecordType.header;
}
public int getFlags() {
return flags;
}
@Override
public void init(byte[] dataBytes, int recordId, int flags) throws IOException {
//assert record id == header
this.flags = flags;
int offset = 0;
this.version = LittleEndian.getUInt(dataBytes, offset); offset += LittleEndian.INT_SIZE;
this.emfPlusFlags = LittleEndian.getUInt(dataBytes, offset); offset += LittleEndian.INT_SIZE;
this.logicalDpiX = LittleEndian.getUInt(dataBytes, offset); offset += LittleEndian.INT_SIZE;
this.logicalDpiY = LittleEndian.getUInt(dataBytes, offset);
}
public long getVersion() {
return version;
}
public long getEmfPlusFlags() {
return emfPlusFlags;
}
public long getLogicalDpiX() {
return logicalDpiX;
}
public long getLogicalDpiY() {
return logicalDpiY;
}
@Override
public String toString() {
return "HemfPlusHeader{" +
"flags=" + flags +
", version=" + version +
", emfPlusFlags=" + emfPlusFlags +
", logicalDpiX=" + logicalDpiX +
", logicalDpiY=" + logicalDpiY +
'}';
}
}

45
src/scratchpad/src/org/apache/poi/hemf/hemfplus/record/HemfPlusRecord.java Normal file
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@ -0,0 +1,45 @@
/* ====================================================================
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.hemf.hemfplus.record;
import java.io.IOException;
import org.apache.poi.util.Internal;
@Internal
public interface HemfPlusRecord {
HemfPlusRecordType getRecordType();
int getFlags();
/**
*
* @param dataBytes these are the bytes that start after the id, flags, record size
* and go to the end of the record; they do not include any required padding
* at the end.
* @param recordId record type id
* @param flags flags
* @return
* @throws IOException, RecordFormatException
*/
void init(byte[] dataBytes, int recordId, int flags) throws IOException;
}

97
src/scratchpad/src/org/apache/poi/hemf/hemfplus/record/HemfPlusRecordType.java Normal file
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@ -0,0 +1,97 @@
/* ====================================================================
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.hemf.hemfplus.record;
import org.apache.poi.util.Internal;
@Internal
public enum HemfPlusRecordType {
header(0x4001, HemfPlusHeader.class),
endOfFile(0x4002, UnimplementedHemfPlusRecord.class),
comment(0x4003, UnimplementedHemfPlusRecord.class),
getDC(0x4004, UnimplementedHemfPlusRecord.class),
multiFormatStart(0x4005, UnimplementedHemfPlusRecord.class),
multiFormatSection(0x4006, UnimplementedHemfPlusRecord.class),
multiFormatEnd(0x4007, UnimplementedHemfPlusRecord.class),
object(0x4008, UnimplementedHemfPlusRecord.class),
clear(0x4009, UnimplementedHemfPlusRecord.class),
fillRects(0x400A, UnimplementedHemfPlusRecord.class),
drawRects(0x400B, UnimplementedHemfPlusRecord.class),
fillPolygon(0x400C, UnimplementedHemfPlusRecord.class),
drawLines(0x400D, UnimplementedHemfPlusRecord.class),
fillEllipse(0x400E, UnimplementedHemfPlusRecord.class),
drawEllipse(0x400F, UnimplementedHemfPlusRecord.class),
fillPie(0x4010, UnimplementedHemfPlusRecord.class),
drawPie(0x4011, UnimplementedHemfPlusRecord.class),
drawArc(0x4012, UnimplementedHemfPlusRecord.class),
fillRegion(0x4013, UnimplementedHemfPlusRecord.class),
fillPath(0x4014, UnimplementedHemfPlusRecord.class),
drawPath(0x4015, UnimplementedHemfPlusRecord.class),
fillClosedCurve(0x4016, UnimplementedHemfPlusRecord.class),
drawClosedCurve(0x4017, UnimplementedHemfPlusRecord.class),
drawCurve(0x4018, UnimplementedHemfPlusRecord.class),
drawBeziers(0x4019, UnimplementedHemfPlusRecord.class),
drawImage(0x401A, UnimplementedHemfPlusRecord.class),
drawImagePoints(0x401B, UnimplementedHemfPlusRecord.class),
drawString(0x401C, UnimplementedHemfPlusRecord.class),
setRenderingOrigin(0x401D, UnimplementedHemfPlusRecord.class),
setAntiAliasMode(0x401E, UnimplementedHemfPlusRecord.class),
setTextRenderingHint(0x401F, UnimplementedHemfPlusRecord.class),
setTextContrast(0x4020, UnimplementedHemfPlusRecord.class),
setInterpolationMode(0x4021, UnimplementedHemfPlusRecord.class),
setPixelOffsetMode(0x4022, UnimplementedHemfPlusRecord.class),
setComositingMode(0x4023, UnimplementedHemfPlusRecord.class),
setCompositingQuality(0x4024, UnimplementedHemfPlusRecord.class),
save(0x4025, UnimplementedHemfPlusRecord.class),
restore(0x4026, UnimplementedHemfPlusRecord.class),
beginContainer(0x4027, UnimplementedHemfPlusRecord.class),
beginContainerNoParams(0x428, UnimplementedHemfPlusRecord.class),
endContainer(0x4029, UnimplementedHemfPlusRecord.class),
setWorldTransform(0x402A, UnimplementedHemfPlusRecord.class),
resetWorldTransform(0x402B, UnimplementedHemfPlusRecord.class),
multiplyWorldTransform(0x402C, UnimplementedHemfPlusRecord.class),
translateWorldTransform(0x402D, UnimplementedHemfPlusRecord.class),
scaleWorldTransform(0x402E, UnimplementedHemfPlusRecord.class),
rotateWorldTransform(0x402F, UnimplementedHemfPlusRecord.class),
setPageTransform(0x4030, UnimplementedHemfPlusRecord.class),
resetClip(0x4031, UnimplementedHemfPlusRecord.class),
setClipRect(0x4032, UnimplementedHemfPlusRecord.class),
setClipRegion(0x4033, UnimplementedHemfPlusRecord.class),
setClipPath(0x4034, UnimplementedHemfPlusRecord.class),
offsetClip(0x4035, UnimplementedHemfPlusRecord.class),
drawDriverstring(0x4036, UnimplementedHemfPlusRecord.class),
strokeFillPath(0x4037, UnimplementedHemfPlusRecord.class),
serializableObject(0x4038, UnimplementedHemfPlusRecord.class),
setTSGraphics(0x4039, UnimplementedHemfPlusRecord.class),
setTSClip(0x403A, UnimplementedHemfPlusRecord.class);
public final long id;
public final Class<? extends HemfPlusRecord> clazz;
HemfPlusRecordType(long id, Class<? extends HemfPlusRecord> clazz) {
this.id = id;
this.clazz = clazz;
}
public static HemfPlusRecordType getById(long id) {
for (HemfPlusRecordType wrt : values()) {
if (wrt.id == id) return wrt;
}
return null;
}
}

53
src/scratchpad/src/org/apache/poi/hemf/hemfplus/record/UnimplementedHemfPlusRecord.java Normal file
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@ -0,0 +1,53 @@
/* ====================================================================
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.hemf.hemfplus.record;
import java.io.IOException;
import org.apache.poi.util.Internal;
@Internal
public class UnimplementedHemfPlusRecord implements HemfPlusRecord {
private int recordId;
private int flags;
private byte[] recordBytes;
@Override
public HemfPlusRecordType getRecordType() {
return HemfPlusRecordType.getById(recordId);
}
@Override
public int getFlags() {
return flags;
}
@Override
public void init(byte[] recordBytes, int recordId, int flags) throws IOException {
this.recordId = recordId;
this.flags = flags;
this.recordBytes = recordBytes;
}
public byte[] getRecordBytes() {
//should probably defensively return a copy.
return recordBytes;
}
}

39
src/scratchpad/src/org/apache/poi/hemf/record/AbstractHemfComment.java Normal file
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@ -0,0 +1,39 @@
/* ====================================================================
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.hemf.record;
import org.apache.poi.util.Internal;
/**
* Syntactic utility to allow for four different
* comment classes
*/
@Internal
public abstract class AbstractHemfComment {
private final byte[] rawBytes;
public AbstractHemfComment(byte[] rawBytes) {
this.rawBytes = rawBytes;
}
public byte[] getRawBytes() {
return rawBytes;
}
}

31
src/scratchpad/src/org/apache/poi/hemf/record/HemfComment.java Normal file
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@ -0,0 +1,31 @@
/* ====================================================================
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.hemf.record;
import org.apache.poi.util.Internal;
/**
* Contains arbitrary data
*/
@Internal
public class HemfComment extends AbstractHemfComment {
public HemfComment(byte[] rawBytes) {
super(rawBytes);
}
}

107
src/scratchpad/src/org/apache/poi/hemf/record/HemfCommentEMFPlus.java Normal file
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@ -0,0 +1,107 @@
/* ====================================================================
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.hemf.record;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.poi.hemf.hemfplus.record.HemfPlusRecord;
import org.apache.poi.hemf.hemfplus.record.HemfPlusRecordType;
import org.apache.poi.util.Internal;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.RecordFormatException;
/**
* An HemfCommentEMFPlus may contain one or more EMFPlus records
*/
@Internal
public class HemfCommentEMFPlus extends AbstractHemfComment {
long dataSize;
public HemfCommentEMFPlus(byte[] rawBytes) {
//these rawBytes contain only the EMFPlusRecord(s?)
//the EmfComment type, size, datasize and comment identifier have all been stripped.
//The EmfPlus type, flags, size, data size should start at rawBytes[0]
super(rawBytes);
}
public List<HemfPlusRecord> getRecords() {
return HemfPlusParser.parse(getRawBytes());
}
private static class HemfPlusParser {
public static List<HemfPlusRecord> parse(byte[] bytes) {
List<HemfPlusRecord> records = new ArrayList<HemfPlusRecord>();
int offset = 0;
while (offset < bytes.length) {
if (offset + 12 > bytes.length) {
//if header will go beyond bytes, stop now
//TODO: log or throw
break;
}
int type = LittleEndian.getUShort(bytes, offset); offset += LittleEndian.SHORT_SIZE;
int flags = LittleEndian.getUShort(bytes, offset); offset += LittleEndian.SHORT_SIZE;
long sizeLong = LittleEndian.getUInt(bytes, offset); offset += LittleEndian.INT_SIZE;
if (sizeLong >= Integer.MAX_VALUE) {
throw new RecordFormatException("size of emf record >= Integer.MAX_VALUE");
}
int size = (int)sizeLong;
long dataSizeLong = LittleEndian.getUInt(bytes, offset); offset += LittleEndian.INT_SIZE;
if (dataSizeLong >= Integer.MAX_VALUE) {
throw new RuntimeException("data size of emfplus record cannot be >= Integer.MAX_VALUE");
}
int dataSize = (int)dataSizeLong;
if (dataSize + offset > bytes.length) {
//TODO: log or throw?
break;
}
HemfPlusRecord record = buildRecord(type, flags, dataSize, offset, bytes);
records.add(record);
offset += dataSize;
}
return records;
}
private static HemfPlusRecord buildRecord(int recordId, int flags, int size, int offset, byte[] bytes) {
HemfPlusRecord record = null;
HemfPlusRecordType type = HemfPlusRecordType.getById(recordId);
if (type == null) {
throw new RuntimeException("Undefined record of type:"+recordId);
}
try {
record = type.clazz.newInstance();
} catch (InstantiationException e) {
throw new RuntimeException(e);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
byte[] dataBytes = new byte[size];
System.arraycopy(bytes, offset, dataBytes, 0, size);
try {
record.init(dataBytes, recordId, flags);
} catch (IOException e) {
throw new RuntimeException(e);
}
return record;
}
}
}

31
src/scratchpad/src/org/apache/poi/hemf/record/HemfCommentEMFSpool.java Normal file
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@ -0,0 +1,31 @@
/* ====================================================================
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.hemf.record;
import org.apache.poi.util.Internal;
/**
* Not yet implemented
*/
@Internal
public class HemfCommentEMFSpool extends AbstractHemfComment {
public HemfCommentEMFSpool(byte[] rawBytes) {
super(rawBytes);
}
}

176
src/scratchpad/src/org/apache/poi/hemf/record/HemfCommentPublic.java Normal file
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@ -0,0 +1,176 @@
/* ====================================================================
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.hemf.record;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.poi.util.Internal;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.RecordFormatException;
/**
* Container class for four subtypes of HemfCommentPublic: BeginGroup, EndGroup, MultiFormats
* and Windows Metafile.
*/
@Internal
public class HemfCommentPublic {
/**
* Stub, to be implemented
*/
public static class BeginGroup extends AbstractHemfComment {
public BeginGroup(byte[] rawBytes) {
super(rawBytes);
}
}
/**
* Stub, to be implemented
*/
public static class EndGroup extends AbstractHemfComment {
public EndGroup(byte[] rawBytes) {
super(rawBytes);
}
}
public static class MultiFormats extends AbstractHemfComment {
public MultiFormats(byte[] rawBytes) {
super(rawBytes);
}
/**
*
* @return a list of HemfMultFormatsData
*/
public List<HemfMultiFormatsData> getData() {
byte[] rawBytes = getRawBytes();
//note that raw bytes includes the public comment identifier
int currentOffset = 4 + 16;//4 public comment identifier, 16 for outputrect
long countFormats = LittleEndian.getUInt(rawBytes, currentOffset);
currentOffset += LittleEndian.INT_SIZE;
List<EmrFormat> emrFormatList = new ArrayList<EmrFormat>();
for (long i = 0; i < countFormats; i++) {
emrFormatList.add(new EmrFormat(rawBytes, currentOffset));
currentOffset += 4 * LittleEndian.INT_SIZE;
}
List<HemfMultiFormatsData> list = new ArrayList<HemfMultiFormatsData>();
for (EmrFormat emrFormat : emrFormatList) {
byte[] data = new byte[emrFormat.size];
System.arraycopy(rawBytes, emrFormat.offset-4, data, 0, emrFormat.size);
list.add(new HemfMultiFormatsData(emrFormat.signature, emrFormat.version, data));
}
return list;
}
private class EmrFormat {
long signature;
long version;
int size;
int offset;
public EmrFormat(byte[] rawBytes, int currentOffset) {
signature = LittleEndian.getUInt(rawBytes, currentOffset); currentOffset += LittleEndian.INT_SIZE;
version = LittleEndian.getUInt(rawBytes, currentOffset); currentOffset += LittleEndian.INT_SIZE;
//spec says this must be a 32bit "aligned" typo for "signed"?
//realistically, this has to be an int...
size = LittleEndian.getInt(rawBytes, currentOffset); currentOffset += LittleEndian.INT_SIZE;
//y, can be long, but realistically?
offset = LittleEndian.getInt(rawBytes, currentOffset); currentOffset += LittleEndian.INT_SIZE;
if (size < 0) {
throw new RecordFormatException("size for emrformat must be > 0");
}
if (offset < 0) {
throw new RecordFormatException("offset for emrformat must be > 0");
}
}
}
}
/**
* Stub, to be implemented
*/
public static class WindowsMetafile extends AbstractHemfComment {
private final byte[] wmfBytes;
public WindowsMetafile(byte[] rawBytes) {
super(rawBytes);
int offset = LittleEndian.INT_SIZE;//public comment identifier
int version = LittleEndian.getUShort(rawBytes, offset); offset += LittleEndian.SHORT_SIZE;
int reserved = LittleEndian.getUShort(rawBytes, offset); offset += LittleEndian.SHORT_SIZE;
offset += LittleEndian.INT_SIZE; //checksum
offset += LittleEndian.INT_SIZE; //flags
long winMetafileSizeLong = LittleEndian.getUInt(rawBytes, offset); offset += LittleEndian.INT_SIZE;
if (winMetafileSizeLong == 0L) {
wmfBytes = new byte[0];
return;
}
if (winMetafileSizeLong > Integer.MAX_VALUE) {
throw new RecordFormatException("Metafile record length can't be > Integer.MAX_VALUE");
}
int winMetafileSize = (int)winMetafileSizeLong;
wmfBytes = new byte[winMetafileSize];
System.arraycopy(rawBytes, offset, wmfBytes, 0, winMetafileSize);
}
/**
*
* @return an InputStream for the embedded WMF file
*/
public InputStream getWmfInputStream() {
return new ByteArrayInputStream(wmfBytes);
}
}
/**
* This encapulates a single record stored within
* a HemfCommentPublic.MultiFormats record.
*/
public static class HemfMultiFormatsData {
long signature;
long version;
byte[] data;
public HemfMultiFormatsData(long signature, long version, byte[] data) {
this.signature = signature;
this.version = version;
this.data = data;
}
public long getSignature() {
return signature;
}
public long getVersion() {
return version;
}
public byte[] getData() {
return data;
}
}
}

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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.hemf.record;
import java.io.IOException;
import org.apache.poi.util.IOUtils;
import org.apache.poi.util.Internal;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.LittleEndianInputStream;
import org.apache.poi.util.RecordFormatException;
/**
* This is the outer comment record that is recognized
* by the initial parse by {@link HemfRecordType#comment}.
* However, there are four types of comment: EMR_COMMENT,
* EMR_COMMENT_EMFPLUS, EMR_COMMENT_EMFSPOOL, and EMF_COMMENT_PUBLIC.
* To get the underlying comment, call {@link #getComment()}.
*
*/
@Internal
public class HemfCommentRecord implements HemfRecord {
public final static long COMMENT_EMFSPOOL = 0x00000000;
public final static long COMMENT_EMFPLUS = 0x2B464D45;
public final static long COMMENT_PUBLIC = 0x43494447;
private AbstractHemfComment comment;
@Override
public HemfRecordType getRecordType() {
return HemfRecordType.comment;
}
@Override
public long init(LittleEndianInputStream leis, long recordId, long recordSize) throws IOException {
long dataSize = leis.readUInt(); recordSize -= LittleEndian.INT_SIZE;
byte[] optionalCommentIndentifierBuffer = new byte[4];
leis.readFully(optionalCommentIndentifierBuffer);
dataSize = dataSize-LittleEndian.INT_SIZE; //size minus the first int which could be a comment identifier
recordSize -= LittleEndian.INT_SIZE;
long optionalCommentIdentifier = LittleEndian.getInt(optionalCommentIndentifierBuffer) & 0x00FFFFFFFFL;
if (optionalCommentIdentifier == COMMENT_EMFSPOOL) {
comment = new HemfCommentEMFSpool(readToByteArray(leis, dataSize, recordSize));
} else if (optionalCommentIdentifier == COMMENT_EMFPLUS) {
comment = new HemfCommentEMFPlus(readToByteArray(leis, dataSize, recordSize));
} else if (optionalCommentIdentifier == COMMENT_PUBLIC) {
comment = CommentPublicParser.parse(readToByteArray(leis, dataSize, recordSize));
} else {
comment = new HemfComment(readToByteArray(optionalCommentIndentifierBuffer, leis, dataSize, recordSize));
}
return recordSize;
}
//this prepends the initial "int" which turned out NOT to be
//a signifier of emfplus, spool, public.
private byte[] readToByteArray(byte[] initialBytes, LittleEndianInputStream leis,
long remainingDataSize, long remainingRecordSize) throws IOException {
if (remainingDataSize > Integer.MAX_VALUE) {
throw new RecordFormatException("Data size can't be > Integer.MAX_VALUE");
}
if (remainingRecordSize > Integer.MAX_VALUE) {
throw new RecordFormatException("Record size can't be > Integer.MAX_VALUE");
}
if (remainingRecordSize == 0) {
return new byte[0];
}
int dataSize = (int)remainingDataSize;
int recordSize = (int)remainingRecordSize;
byte[] arr = new byte[dataSize+initialBytes.length];
System.arraycopy(initialBytes,0,arr, 0, initialBytes.length);
IOUtils.readFully(leis, arr, initialBytes.length, dataSize);
IOUtils.skipFully(leis, recordSize-dataSize);
return arr;
}
private byte[] readToByteArray(LittleEndianInputStream leis, long dataSize, long recordSize) throws IOException {
assert dataSize < Integer.MAX_VALUE;
if (recordSize == 0) {
return new byte[0];
}
byte[] arr = new byte[(int)dataSize];
IOUtils.readFully(leis, arr);
IOUtils.skipFully(leis, recordSize-dataSize);
return arr;
}
public AbstractHemfComment getComment() {
return comment;
}
private static class CommentPublicParser {
private static final long WINDOWS_METAFILE = 0x80000001L; //wmf
private static final long BEGINGROUP = 0x00000002; //beginning of a group of drawing records
private static final long ENDGROUP = 0x00000003; //end of a group of drawing records
private static final long MULTIFORMATS = 0x40000004; //allows multiple definitions of an image, including encapsulated postscript
private static final long UNICODE_STRING = 0x00000040; //reserved. must not be used
private static final long UNICODE_END = 0x00000080; //reserved, must not be used
private static AbstractHemfComment parse(byte[] bytes) {
long publicCommentIdentifier = LittleEndian.getUInt(bytes, 0);
if (publicCommentIdentifier == WINDOWS_METAFILE) {
return new HemfCommentPublic.WindowsMetafile(bytes);
} else if (publicCommentIdentifier == BEGINGROUP) {
return new HemfCommentPublic.BeginGroup(bytes);
} else if (publicCommentIdentifier == ENDGROUP) {
return new HemfCommentPublic.EndGroup(bytes);
} else if (publicCommentIdentifier == MULTIFORMATS) {
return new HemfCommentPublic.MultiFormats(bytes);
} else if (publicCommentIdentifier == UNICODE_STRING || publicCommentIdentifier == UNICODE_END) {
throw new RuntimeException("UNICODE_STRING/UNICODE_END values are reserved in CommentPublic records");
}
throw new RuntimeException("Unrecognized public comment type:" +publicCommentIdentifier + " ; " + WINDOWS_METAFILE);
}
}
}

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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.hemf.record;
import java.awt.Rectangle;
import java.io.IOException;
import org.apache.poi.util.IOUtils;
import org.apache.poi.util.Internal;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.LittleEndianInputStream;
/**
* Extracts the full header from EMF files.
* @see org.apache.poi.sl.image.ImageHeaderEMF
*/
@Internal
public class HemfHeader implements HemfRecord {
private Rectangle boundsRectangle;
private Rectangle frameRectangle;
private long bytes;
private long records;
private int handles;
private long nDescription;
private long offDescription;
private long nPalEntries;
private boolean hasExtension1;
private long cbPixelFormat;
private long offPixelFormat;
private long bOpenGL;
private boolean hasExtension2;
private long micrometersX;
private long micrometersY;
public Rectangle getBoundsRectangle() {
return boundsRectangle;
}
public Rectangle getFrameRectangle() {
return frameRectangle;
}
public long getBytes() {
return bytes;
}
public long getRecords() {
return records;
}
public int getHandles() {
return handles;
}
public long getnDescription() {
return nDescription;
}
public long getOffDescription() {
return offDescription;
}
public long getnPalEntries() {
return nPalEntries;
}
public boolean isHasExtension1() {
return hasExtension1;
}
public long getCbPixelFormat() {
return cbPixelFormat;
}
public long getOffPixelFormat() {
return offPixelFormat;
}
public long getbOpenGL() {
return bOpenGL;
}
public boolean isHasExtension2() {
return hasExtension2;
}
public long getMicrometersX() {
return micrometersX;
}
public long getMicrometersY() {
return micrometersY;
}
@Override
public String toString() {
return "HemfHeader{" +
"boundsRectangle=" + boundsRectangle +
", frameRectangle=" + frameRectangle +
", bytes=" + bytes +
", records=" + records +
", handles=" + handles +
", nDescription=" + nDescription +
", offDescription=" + offDescription +
", nPalEntries=" + nPalEntries +
", hasExtension1=" + hasExtension1 +
", cbPixelFormat=" + cbPixelFormat +
", offPixelFormat=" + offPixelFormat +
", bOpenGL=" + bOpenGL +
", hasExtension2=" + hasExtension2 +
", micrometersX=" + micrometersX +
", micrometersY=" + micrometersY +
'}';
}
@Override
public HemfRecordType getRecordType() {
return HemfRecordType.header;
}
@Override
public long init(LittleEndianInputStream leis, long recordId, long recordSize) throws IOException {
if (recordId != 1L) {
throw new IOException("Not a valid EMF header. Record type:"+recordId);
}
//read the record--id and size (2 bytes) have already been read
byte[] data = new byte[(int)recordSize];
IOUtils.readFully(leis, data);
int offset = 0;
//bounds
int boundsLeft = LittleEndian.getInt(data, offset); offset += LittleEndian.INT_SIZE;
int boundsTop = LittleEndian.getInt(data, offset); offset += LittleEndian.INT_SIZE;
int boundsRight = LittleEndian.getInt(data, offset); offset += LittleEndian.INT_SIZE;
int boundsBottom = LittleEndian.getInt(data, offset); offset += LittleEndian.INT_SIZE;
boundsRectangle = new Rectangle(boundsLeft, boundsTop,
boundsRight - boundsLeft, boundsBottom - boundsTop);
int frameLeft = LittleEndian.getInt(data, offset); offset += LittleEndian.INT_SIZE;
int frameTop = LittleEndian.getInt(data, offset); offset += LittleEndian.INT_SIZE;
int frameRight = LittleEndian.getInt(data, offset); offset += LittleEndian.INT_SIZE;
int frameBottom = LittleEndian.getInt(data, offset); offset += LittleEndian.INT_SIZE;
frameRectangle = new Rectangle(frameLeft, frameTop,
frameRight - frameLeft, frameBottom - frameTop);
long recordSignature = LittleEndian.getInt(data, offset); offset += LittleEndian.INT_SIZE;
if (recordSignature != 0x464D4520) {
throw new IOException("bad record signature: " + recordSignature);
}
long version = LittleEndian.getInt(data, offset); offset += LittleEndian.INT_SIZE;
//According to the spec, MSOffice doesn't pay attention to this value.
//It _should_ be 0x00010000
bytes = LittleEndian.getUInt(data, offset); offset += LittleEndian.INT_SIZE;
records = LittleEndian.getUInt(data, offset); offset += LittleEndian.INT_SIZE;
handles = LittleEndian.getUShort(data, offset);offset += LittleEndian.SHORT_SIZE;
offset += LittleEndian.SHORT_SIZE;//reserved
nDescription = LittleEndian.getUInt(data, offset); offset += LittleEndian.INT_SIZE;
offDescription = LittleEndian.getUInt(data, offset); offset += LittleEndian.INT_SIZE;
nPalEntries = LittleEndian.getUInt(data, offset); offset += LittleEndian.INT_SIZE;
//should be skips
offset += 8;//device
offset += 8;//millimeters
if (recordSize+8 >= 100) {
hasExtension1 = true;
cbPixelFormat = LittleEndian.getUInt(data, offset); offset += LittleEndian.INT_SIZE;
offPixelFormat = LittleEndian.getUInt(data, offset); offset += LittleEndian.INT_SIZE;
bOpenGL= LittleEndian.getUInt(data, offset); offset += LittleEndian.INT_SIZE;
}
if (recordSize+8 >= 108) {
hasExtension2 = true;
micrometersX = LittleEndian.getUInt(data, offset); offset += LittleEndian.INT_SIZE;
micrometersY = LittleEndian.getUInt(data, offset); offset += LittleEndian.INT_SIZE;
}
return recordSize;
}
}

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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.hemf.record;
import java.io.IOException;
import org.apache.poi.util.Internal;
import org.apache.poi.util.LittleEndianInputStream;
@Internal
public interface HemfRecord {
HemfRecordType getRecordType();
/**
* Init record from stream
*
* @param leis the little endian input stream
* @return count of processed bytes
* @throws IOException
*/
long init(LittleEndianInputStream leis, long recordId, long recordSize) throws IOException;
}

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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.hemf.record;
import org.apache.poi.util.Internal;
@Internal
public enum HemfRecordType {
header(0x00000001, UnimplementedHemfRecord.class),
polybeizer(0x00000002, UnimplementedHemfRecord.class),
polygon(0x00000003, UnimplementedHemfRecord.class),
polyline(0x00000004, UnimplementedHemfRecord.class),
polybezierto(0x00000005, UnimplementedHemfRecord.class),
polylineto(0x00000006, UnimplementedHemfRecord.class),
polypolyline(0x00000007, UnimplementedHemfRecord.class),
polypolygon(0x00000008, UnimplementedHemfRecord.class),
setwindowextex(0x00000009, UnimplementedHemfRecord.class),
setwindoworgex(0x0000000A, UnimplementedHemfRecord.class),
setviewportextex(0x0000000B, UnimplementedHemfRecord.class),
setviewportorgex(0x0000000C, UnimplementedHemfRecord.class),
setbrushorgex(0x0000000D, UnimplementedHemfRecord.class),
eof(0x0000000E, UnimplementedHemfRecord.class),
setpixelv(0x0000000F, UnimplementedHemfRecord.class),
setmapperflags(0x00000010, UnimplementedHemfRecord.class),
setmapmode(0x00000011, UnimplementedHemfRecord.class),
setbkmode(0x00000012, UnimplementedHemfRecord.class),
setpolyfillmode(0x00000013, UnimplementedHemfRecord.class),
setrop2(0x00000014, UnimplementedHemfRecord.class),
setstretchbltmode(0x00000015, UnimplementedHemfRecord.class),
settextalign(0x00000016, HemfText.SetTextAlign.class),
setcoloradjustment(0x00000017, UnimplementedHemfRecord.class),
settextcolor(0x00000018, HemfText.SetTextColor.class),
setbkcolor(0x00000019, UnimplementedHemfRecord.class),
setoffsetcliprgn(0x0000001A, UnimplementedHemfRecord.class),
setmovetoex(0x0000001B, UnimplementedHemfRecord.class),
setmetargn(0x0000001C, UnimplementedHemfRecord.class),
setexcludecliprect(0x0000001D, UnimplementedHemfRecord.class),
setintersectcliprect(0x0000001E, UnimplementedHemfRecord.class),
scaleviewportextex(0x0000001F, UnimplementedHemfRecord.class),
scalewindowextex(0x00000020, UnimplementedHemfRecord.class),
savedc(0x00000021, UnimplementedHemfRecord.class),
restoredc(0x00000022, UnimplementedHemfRecord.class),
setworldtransform(0x00000023, UnimplementedHemfRecord.class),
modifyworldtransform(0x00000024, UnimplementedHemfRecord.class),
selectobject(0x00000025, UnimplementedHemfRecord.class),
createpen(0x00000026, UnimplementedHemfRecord.class),
createbrushindirect(0x00000027, UnimplementedHemfRecord.class),
deleteobject(0x00000028, UnimplementedHemfRecord.class),
anglearc(0x00000029, UnimplementedHemfRecord.class),
ellipse(0x0000002A, UnimplementedHemfRecord.class),
rectangle(0x0000002B, UnimplementedHemfRecord.class),
roundirect(0x0000002C, UnimplementedHemfRecord.class),
arc(0x0000002D, UnimplementedHemfRecord.class),
chord(0x0000002E, UnimplementedHemfRecord.class),
pie(0x0000002F, UnimplementedHemfRecord.class),
selectpalette(0x00000030, UnimplementedHemfRecord.class),
createpalette(0x00000031, UnimplementedHemfRecord.class),
setpaletteentries(0x00000032, UnimplementedHemfRecord.class),
resizepalette(0x00000033, UnimplementedHemfRecord.class),
realizepalette(0x0000034, UnimplementedHemfRecord.class),
extfloodfill(0x00000035, UnimplementedHemfRecord.class),
lineto(0x00000036, UnimplementedHemfRecord.class),
arcto(0x00000037, UnimplementedHemfRecord.class),
polydraw(0x00000038, UnimplementedHemfRecord.class),
setarcdirection(0x00000039, UnimplementedHemfRecord.class),
setmiterlimit(0x0000003A, UnimplementedHemfRecord.class),
beginpath(0x0000003B, UnimplementedHemfRecord.class),
endpath(0x0000003C, UnimplementedHemfRecord.class),
closefigure(0x0000003D, UnimplementedHemfRecord.class),
fillpath(0x0000003E, UnimplementedHemfRecord.class),
strokeandfillpath(0x0000003F, UnimplementedHemfRecord.class),
strokepath(0x00000040, UnimplementedHemfRecord.class),
flattenpath(0x00000041, UnimplementedHemfRecord.class),
widenpath(0x00000042, UnimplementedHemfRecord.class),
selectclippath(0x00000043, UnimplementedHemfRecord.class),
abortpath(0x00000044, UnimplementedHemfRecord.class), //no 45?!
comment(0x00000046, HemfCommentRecord.class),
fillrgn(0x00000047, UnimplementedHemfRecord.class),
framergn(0x00000048, UnimplementedHemfRecord.class),
invertrgn(0x00000049, UnimplementedHemfRecord.class),
paintrgn(0x0000004A, UnimplementedHemfRecord.class),
extselectciprrgn(0x0000004B, UnimplementedHemfRecord.class),
bitblt(0x0000004C, UnimplementedHemfRecord.class),
stretchblt(0x0000004D, UnimplementedHemfRecord.class),
maskblt(0x0000004E, UnimplementedHemfRecord.class),
plgblt(0x0000004F, UnimplementedHemfRecord.class),
setbitstodevice(0x00000050, UnimplementedHemfRecord.class),
stretchdibits(0x00000051, UnimplementedHemfRecord.class),
extcreatefontindirectw(0x00000052, HemfText.ExtCreateFontIndirectW.class),
exttextouta(0x00000053, HemfText.ExtTextOutA.class),
exttextoutw(0x00000054, HemfText.ExtTextOutW.class),
polybezier16(0x00000055, UnimplementedHemfRecord.class),
polygon16(0x00000056, UnimplementedHemfRecord.class),
polyline16(0x00000057, UnimplementedHemfRecord.class),
polybezierto16(0x00000058, UnimplementedHemfRecord.class),
polylineto16(0x00000059, UnimplementedHemfRecord.class),
polypolyline16(0x0000005A, UnimplementedHemfRecord.class),
polypolygon16(0x0000005B, UnimplementedHemfRecord.class),
polydraw16(0x0000005C, UnimplementedHemfRecord.class),
createmonobrush16(0x0000005D, UnimplementedHemfRecord.class),
createdibpatternbrushpt(0x0000005E, UnimplementedHemfRecord.class),
extcreatepen(0x0000005F, UnimplementedHemfRecord.class),
polytextouta(0x00000060, HemfText.PolyTextOutA.class),
polytextoutw(0x00000061, HemfText.PolyTextOutW.class),
seticmmode(0x00000062, UnimplementedHemfRecord.class),
createcolorspace(0x00000063, UnimplementedHemfRecord.class),
setcolorspace(0x00000064, UnimplementedHemfRecord.class),
deletecolorspace(0x00000065, UnimplementedHemfRecord.class),
glsrecord(0x00000066, UnimplementedHemfRecord.class),
glsboundedrecord(0x00000067, UnimplementedHemfRecord.class),
pixelformat(0x00000068, UnimplementedHemfRecord.class),
drawescape(0x00000069, UnimplementedHemfRecord.class),
extescape(0x0000006A, UnimplementedHemfRecord.class),//no 6b?!
smalltextout(0x0000006C, UnimplementedHemfRecord.class),
forceufimapping(0x0000006D, UnimplementedHemfRecord.class),
namedescape(0x0000006E, UnimplementedHemfRecord.class),
colorcorrectpalette(0x0000006F, UnimplementedHemfRecord.class),
seticmprofilea(0x00000070, UnimplementedHemfRecord.class),
seticmprofilew(0x00000071, UnimplementedHemfRecord.class),
alphablend(0x00000072, UnimplementedHemfRecord.class),
setlayout(0x00000073, UnimplementedHemfRecord.class),
transparentblt(0x00000074, UnimplementedHemfRecord.class),
gradientfill(0x00000076, UnimplementedHemfRecord.class), //no 75?!
setlinkdufis(0x00000077, UnimplementedHemfRecord.class),
settextjustification(0x00000078, HemfText.SetTextJustification.class),
colormatchtargetw(0x00000079, UnimplementedHemfRecord.class),
createcolorspacew(0x0000007A, UnimplementedHemfRecord.class);
public final long id;
public final Class<? extends HemfRecord> clazz;
HemfRecordType(long id, Class<? extends HemfRecord> clazz) {
this.id = id;
this.clazz = clazz;
}
public static HemfRecordType getById(long id) {
for (HemfRecordType wrt : values()) {
if (wrt.id == id) return wrt;
}
return null;
}
}

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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.hemf.record;
import java.io.ByteArrayInputStream;
import java.io.EOFException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.nio.charset.Charset;
import org.apache.poi.util.IOUtils;
import org.apache.poi.util.Internal;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.LittleEndianInputStream;
import org.apache.poi.util.RecordFormatException;
/**
* Container class to gather all text-related commands
* This is starting out as read only, and very little is actually
* implemented at this point!
*/
@Internal
public class HemfText {
private final static Charset UTF16LE = Charset.forName("UTF-16LE");
public static class ExtCreateFontIndirectW extends UnimplementedHemfRecord {
}
public static class ExtTextOutA implements HemfRecord {
private long left,top,right,bottom;
//TODO: translate this to a graphicsmode enum
private long graphicsMode;
private long exScale;
private long eyScale;
EmrTextObject textObject;
@Override
public HemfRecordType getRecordType() {
return HemfRecordType.exttextouta;
}
@Override
public long init(LittleEndianInputStream leis, long recordId, long recordSize) throws IOException {
//note that the first 2 uInts have been read off and the recordsize has
//been decreased by 8
left = leis.readInt();
top = leis.readInt();
right = leis.readInt();
bottom = leis.readInt();
graphicsMode = leis.readUInt();
exScale = leis.readUInt();
eyScale = leis.readUInt();
int recordSizeInt = -1;
if (recordSize < Integer.MAX_VALUE) {
recordSizeInt = (int)recordSize;
} else {
throw new RecordFormatException("can't have text length > Integer.MAX_VALUE");
}
//guarantee to read the rest of the EMRTextObjectRecord
//emrtextbytes start after 7*4 bytes read above
byte[] emrTextBytes = new byte[recordSizeInt-(7*LittleEndian.INT_SIZE)];
IOUtils.readFully(leis, emrTextBytes);
textObject = new EmrTextObject(emrTextBytes, getEncodingHint(), 20);//should be 28, but recordSizeInt has already subtracted 8
return recordSize;
}
protected Charset getEncodingHint() {
return null;
}
/**
*
* To be implemented! We need to get the current character set
* from the current font for {@link ExtTextOutA},
* which has to be tracked in the playback device.
*
* For {@link ExtTextOutW}, the charset is "UTF-16LE"
*
* @param charset the charset to be used to decode the character bytes
* @return
* @throws IOException
*/
public String getText(Charset charset) throws IOException {
return textObject.getText(charset);
}
/**
*
* @return the x offset for the EmrTextObject
*/
public long getX() {
return textObject.x;
}
/**
*
* @return the y offset for the EmrTextObject
*/
public long getY() {
return textObject.y;
}
public long getLeft() {
return left;
}
public long getTop() {
return top;
}
public long getRight() {
return right;
}
public long getBottom() {
return bottom;
}
public long getGraphicsMode() {
return graphicsMode;
}
public long getExScale() {
return exScale;
}
public long getEyScale() {
return eyScale;
}
}
public static class ExtTextOutW extends ExtTextOutA {
@Override
public HemfRecordType getRecordType() {
return HemfRecordType.exttextoutw;
}
@Override
protected Charset getEncodingHint() {
return UTF16LE;
}
public String getText() throws IOException {
return getText(UTF16LE);
}
}
/**
* Needs to be implemented. Couldn't find example.
*/
public static class PolyTextOutA extends UnimplementedHemfRecord {
}
/**
* Needs to be implemented. Couldn't find example.
*/
public static class PolyTextOutW extends UnimplementedHemfRecord {
}
public static class SetTextAlign extends UnimplementedHemfRecord {
}
public static class SetTextColor extends UnimplementedHemfRecord {
}
public static class SetTextJustification extends UnimplementedHemfRecord {
}
private static class EmrTextObject {
long x;
long y;
int numChars;
byte[] rawTextBytes;//this stores _all_ of the bytes to the end of the EMRTextObject record.
//Because of potential variable length encodings, must
//carefully read only the numChars from this byte array.
EmrTextObject(byte[] emrTextObjBytes, Charset charsetHint, int readSoFar) throws IOException {
int offset = 0;
x = LittleEndian.getUInt(emrTextObjBytes, offset); offset+= LittleEndian.INT_SIZE;
y = LittleEndian.getUInt(emrTextObjBytes, offset); offset+= LittleEndian.INT_SIZE;
long numCharsLong = LittleEndian.getUInt(emrTextObjBytes, offset); offset += LittleEndian.INT_SIZE;
long offString = LittleEndian.getUInt(emrTextObjBytes, offset); offset += LittleEndian.INT_SIZE;
int start = (int)offString-offset-readSoFar;
if (numCharsLong == 0) {
rawTextBytes = new byte[0];
numChars = 0;
return;
}
if (numCharsLong > Integer.MAX_VALUE) {
throw new RecordFormatException("Number of characters can't be > Integer.MAX_VALUE");
}
numChars = (int)numCharsLong;
rawTextBytes = new byte[emrTextObjBytes.length-start];
System.arraycopy(emrTextObjBytes, start, rawTextBytes, 0, emrTextObjBytes.length-start);
}
String getText(Charset charset) throws IOException {
StringBuilder sb = new StringBuilder();
Reader r = null;
try {
r = new InputStreamReader(new ByteArrayInputStream(rawTextBytes), charset);
for (int i = 0; i < numChars; i++) {
sb.appendCodePoint(readCodePoint(r));
}
} finally {
IOUtils.closeQuietly(r);
}
return sb.toString();
}
//TODO: move this to IOUtils?
private int readCodePoint(Reader r) throws IOException {
int c1 = r.read();
if (c1 == -1) {
throw new EOFException("Tried to read beyond byte array");
}
if (!Character.isHighSurrogate((char)c1)) {
return c1;
}
int c2 = r.read();
if (c2 == -1) {
throw new EOFException("Tried to read beyond byte array");
}
if (!Character.isLowSurrogate((char)c2)) {
throw new RecordFormatException("Expected low surrogate after high surrogate");
}
return Character.toCodePoint((char)c1, (char)c2);
}
}
}

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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.hemf.record;
import java.io.IOException;
import org.apache.poi.util.IOUtils;
import org.apache.poi.util.Internal;
import org.apache.poi.util.LittleEndianInputStream;
@Internal
public class UnimplementedHemfRecord implements HemfRecord {
private long recordId;
public UnimplementedHemfRecord() {
}
@Override
public HemfRecordType getRecordType() {
return HemfRecordType.getById(recordId);
}
@Override
public long init(LittleEndianInputStream leis, long recordId, long recordSize) throws IOException {
this.recordId = recordId;
long skipped = IOUtils.skipFully(leis, recordSize);
if (skipped < 0) {
throw new IOException("End of stream reached before record read");
}
return skipped;
}
}

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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.hemf.extractor;
import static org.apache.poi.POITestCase.assertContains;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.io.InputStream;
import java.util.HashSet;
import java.util.Set;
import org.apache.poi.POIDataSamples;
import org.apache.poi.hemf.record.AbstractHemfComment;
import org.apache.poi.hemf.record.HemfCommentPublic;
import org.apache.poi.hemf.record.HemfCommentRecord;
import org.apache.poi.hemf.record.HemfHeader;
import org.apache.poi.hemf.record.HemfRecord;
import org.apache.poi.hemf.record.HemfRecordType;
import org.apache.poi.hemf.record.HemfText;
import org.junit.Test;
public class HemfExtractorTest {
@Test
public void testBasicWindows() throws Exception {
InputStream is = POIDataSamples.getSpreadSheetInstance().openResourceAsStream("SimpleEMF_windows.emf");
HemfExtractor ex = new HemfExtractor(is);
HemfHeader header = ex.getHeader();
assertEquals(27864, header.getBytes());
assertEquals(31, header.getRecords());
assertEquals(3, header.getHandles());
assertEquals(346000, header.getMicrometersX());
assertEquals(194000, header.getMicrometersY());
int records = 0;
for (HemfRecord record : ex) {
records++;
}
assertEquals(header.getRecords() - 1, records);
}
@Test
public void testBasicMac() throws Exception {
InputStream is =
POIDataSamples.getSpreadSheetInstance().openResourceAsStream("SimpleEMF_mac.emf");
HemfExtractor ex = new HemfExtractor(is);
HemfHeader header = ex.getHeader();
int records = 0;
boolean extractedData = false;
for (HemfRecord record : ex) {
if (record.getRecordType() == HemfRecordType.comment) {
AbstractHemfComment comment = ((HemfCommentRecord) record).getComment();
if (comment instanceof HemfCommentPublic.MultiFormats) {
for (HemfCommentPublic.HemfMultiFormatsData d : ((HemfCommentPublic.MultiFormats) comment).getData()) {
byte[] data = d.getData();
//make sure header starts at 0
assertEquals('%', data[0]);
assertEquals('P', data[1]);
assertEquals('D', data[2]);
assertEquals('F', data[3]);
//make sure byte array ends at EOF\n
assertEquals('E', data[data.length - 4]);
assertEquals('O', data[data.length - 3]);
assertEquals('F', data[data.length - 2]);
assertEquals('\n', data[data.length - 1]);
extractedData = true;
}
}
}
records++;
}
assertTrue(extractedData);
assertEquals(header.getRecords() - 1, records);
}
@Test
public void testMacText() throws Exception {
InputStream is =
POIDataSamples.getSpreadSheetInstance().openResourceAsStream("SimpleEMF_mac.emf");
HemfExtractor ex = new HemfExtractor(is);
long lastY = -1;
long lastX = -1;
long fudgeFactorX = 1000;//derive this from the font information!
StringBuilder sb = new StringBuilder();
for (HemfRecord record : ex) {
if (record.getRecordType().equals(HemfRecordType.exttextoutw)) {
HemfText.ExtTextOutW extTextOutW = (HemfText.ExtTextOutW) record;
if (lastY > -1 && lastY != extTextOutW.getY()) {
sb.append("\n");
lastX = -1;
}
if (lastX > -1 && extTextOutW.getX() - lastX > fudgeFactorX) {
sb.append(" ");
}
sb.append(extTextOutW.getText());
lastY = extTextOutW.getY();
lastX = extTextOutW.getX();
}
}
String txt = sb.toString();
assertContains(txt, "Tika http://incubator.apache.org");
assertContains(txt, "Latest News\n");
}
@Test
public void testWindowsText() throws Exception {
InputStream is = POIDataSamples.getSpreadSheetInstance().openResourceAsStream("SimpleEMF_windows.emf");
HemfExtractor ex = new HemfExtractor(is);
long lastY = -1;
long lastX = -1;
long fudgeFactorX = 1000;//derive this from the font or frame/bounds information
StringBuilder sb = new StringBuilder();
Set<String> expectedParts = new HashSet<String>();
expectedParts.add("C:\\Users\\tallison\\");
expectedParts.add("testPDF.pdf");
int foundExpected = 0;
for (HemfRecord record : ex) {
if (record.getRecordType().equals(HemfRecordType.exttextoutw)) {
HemfText.ExtTextOutW extTextOutW = (HemfText.ExtTextOutW) record;
if (lastY > -1 && lastY != extTextOutW.getY()) {
sb.append("\n");
lastX = -1;
}
if (lastX > -1 && extTextOutW.getX() - lastX > fudgeFactorX) {
sb.append(" ");
}
String txt = extTextOutW.getText();
if (expectedParts.contains(txt)) {
foundExpected++;
}
sb.append(txt);
lastY = extTextOutW.getY();
lastX = extTextOutW.getX();
}
}
String txt = sb.toString();
assertContains(txt, "C:\\Users\\tallison\\\n");
assertContains(txt, "asf2-git-1.x\\tika-\n");
assertEquals(expectedParts.size(), foundExpected);
}
/*
govdocs1 064213.doc-0.emf contains an example of extextouta
*/
}

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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.hemf.hemfplus.extractor;
import static org.junit.Assert.assertEquals;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.poi.POIDataSamples;
import org.apache.poi.hemf.extractor.HemfExtractor;
import org.apache.poi.hemf.hemfplus.record.HemfPlusHeader;
import org.apache.poi.hemf.hemfplus.record.HemfPlusRecord;
import org.apache.poi.hemf.hemfplus.record.HemfPlusRecordType;
import org.apache.poi.hemf.record.HemfCommentEMFPlus;
import org.apache.poi.hemf.record.HemfCommentRecord;
import org.apache.poi.hemf.record.HemfRecord;
import org.junit.Test;
public class HemfPlusExtractorTest {
@Test
public void testBasic() throws Exception {
//test header
HemfCommentEMFPlus emfPlus = getCommentRecord("SimpleEMF_windows.emf", 0);
List<HemfPlusRecord> records = emfPlus.getRecords();
assertEquals(1, records.size());
assertEquals(HemfPlusRecordType.header, records.get(0).getRecordType());
HemfPlusHeader header = (HemfPlusHeader)records.get(0);
assertEquals(240, header.getLogicalDpiX());
assertEquals(240, header.getLogicalDpiY());
assertEquals(1, header.getFlags());
assertEquals(1, header.getEmfPlusFlags());
//test that the HemfCommentEMFPlus record at offset 1
//contains 6 HemfCommentEMFPlus records within it
List<HemfPlusRecordType> expected = new ArrayList<HemfPlusRecordType>();
expected.add(HemfPlusRecordType.setPixelOffsetMode);
expected.add(HemfPlusRecordType.setAntiAliasMode);
expected.add(HemfPlusRecordType.setCompositingQuality);
expected.add(HemfPlusRecordType.setPageTransform);
expected.add(HemfPlusRecordType.setInterpolationMode);
expected.add(HemfPlusRecordType.getDC);
emfPlus = getCommentRecord("SimpleEMF_windows.emf", 1);
records = emfPlus.getRecords();
assertEquals(expected.size(), records.size());
for (int i = 0; i < expected.size(); i++) {
assertEquals(expected.get(i), records.get(i).getRecordType());
}
}
private HemfCommentEMFPlus getCommentRecord(String testFileName, int recordIndex) throws Exception {
InputStream is = null;
HemfCommentEMFPlus returnRecord = null;
try {
is = POIDataSamples.getSpreadSheetInstance().openResourceAsStream(testFileName);
HemfExtractor ex = new HemfExtractor(is);
int i = 0;
for (HemfRecord record : ex) {
if (i == recordIndex) {
HemfCommentRecord commentRecord = ((HemfCommentRecord) record);
returnRecord = (HemfCommentEMFPlus) commentRecord.getComment();
break;
}
i++;
}
} finally {
is.close();
}
return returnRecord;
}
}

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