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use last file extension if multiple extensions; close opened stream; extract String constants 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1776827 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Javen O'Neal 2017-01-01 06:57:42 +00:00
parent a4a0c1e91a
commit 11c8858f6e
1 changed files with 34 additions and 18 deletions
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52
src/ooxml/java/org/apache/poi/ss/extractor/EmbeddedExtractor.java
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@ -17,6 +17,8 @@
package org.apache.poi.ss.extractor;
import static org.apache.poi.util.StringUtil.endsWithIgnoreCase;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
@ -50,6 +52,18 @@ import org.apache.poi.xssf.usermodel.XSSFObjectData;
public class EmbeddedExtractor implements Iterable<EmbeddedExtractor> {
private static final POILogger LOG = POILogFactory.getLogger(EmbeddedExtractor.class);
// contentType
private static final String CONTENT_TYPE_BYTES = "binary/octet-stream";
private static final String CONTENT_TYPE_PDF = "application/pdf";
private static final String CONTENT_TYPE_DOC = "application/msword";
private static final String CONTENT_TYPE_XLS = "application/vnd.ms-excel";
// default file extension
private static final String PDF_EXT = ".pdf";
private static final String DOC_EXT = ".doc";
private static final String XLS_EXT = ".xls";
private static final String OLE_EXT = ".ole";
/**
* @return the list of known extractors, if you provide custom extractors, override this method
*/
@ -98,11 +112,10 @@ public class EmbeddedExtractor implements Iterable<EmbeddedExtractor> {
if (od.hasDirectoryEntry()) {
data = extractOne((DirectoryNode)od.getDirectory());
} else {
String contentType = "binary/octet-stream";
if (od instanceof XSSFObjectData) {
contentType = ((XSSFObjectData)od).getObjectPart().getContentType();
String contentType = ((XSSFObjectData)od).getObjectPart().getContentType();
}
data = new EmbeddedData(od.getFileName(), od.getObjectData(), contentType);
data = new EmbeddedData(od.getFileName(), od.getObjectData(), CONTENT_TYPE_BYTES);
}
} catch (Exception e) {
LOG.log(POILogger.WARN, "Entry not found / readable - ignoring OLE embedding", e);
@ -119,7 +132,7 @@ public class EmbeddedExtractor implements Iterable<EmbeddedExtractor> {
data.setShape(shape);
String filename = data.getFilename();
String extension = (filename == null || filename.indexOf('.') == -1) ? ".bin" : filename.substring(filename.indexOf('.'));
String extension = (filename == null || filename.lastIndexOf('.') == -1) ? ".bin" : filename.substring(filename.lastIndexOf('.'));
// try to find an alternative name
if (filename == null || "".equals(filename) || filename.startsWith("MBD") || filename.startsWith("Root Entry")) {
@ -130,7 +143,7 @@ public class EmbeddedExtractor implements Iterable<EmbeddedExtractor> {
}
// default to dummy name
if (filename == null || "".equals(filename)) {
filename = "picture_"+embeddings.size()+extension;
filename = "picture_" + embeddings.size() + extension;
}
filename = filename.trim();
data.setFilename(filename);
@ -157,7 +170,7 @@ public class EmbeddedExtractor implements Iterable<EmbeddedExtractor> {
dest.writeFilesystem(bos);
dest.close();
return new EmbeddedData(dn.getName(), bos.toByteArray(), "binary/octet-stream");
return new EmbeddedData(dn.getName(), bos.toByteArray(), CONTENT_TYPE_BYTES);
}
protected EmbeddedData extract(Picture source) throws IOException {
@ -176,7 +189,7 @@ public class EmbeddedExtractor implements Iterable<EmbeddedExtractor> {
try {
// TODO: inspect the CompObj record for more details, i.e. the content type
Ole10Native ole10 = Ole10Native.createFromEmbeddedOleObject(dn);
return new EmbeddedData(ole10.getFileName(), ole10.getDataBuffer(), "binary/octet-stream");
return new EmbeddedData(ole10.getFileName(), ole10.getDataBuffer(), CONTENT_TYPE_BYTES);
} catch (Ole10NativeException e) {
throw new IOException(e);
}
@ -198,7 +211,7 @@ public class EmbeddedExtractor implements Iterable<EmbeddedExtractor> {
InputStream is = dn.createDocumentInputStream("CONTENTS");
IOUtils.copy(is, bos);
is.close();
return new EmbeddedData(dn.getName()+".pdf", bos.toByteArray(), "application/pdf");
return new EmbeddedData(dn.getName() + PDF_EXT, bos.toByteArray(), CONTENT_TYPE_PDF);
}
@Override
@ -238,10 +251,10 @@ public class EmbeddedExtractor implements Iterable<EmbeddedExtractor> {
byte[] pdfBytes = new byte[pictureBytesLen];
System.arraycopy(pictureBytes, idxStart, pdfBytes, 0, pictureBytesLen);
String filename = source.getShapeName().trim();
if (!filename.toLowerCase(Locale.ROOT).endsWith(".pdf")) {
filename += ".pdf";
if (!endsWithIgnoreCase(filename, PDF_EXT)) {
filename += PDF_EXT;
}
return new EmbeddedData(filename, pdfBytes, "application/pdf");
return new EmbeddedData(filename, pdfBytes, CONTENT_TYPE_PDF);
}
@ -259,8 +272,8 @@ public class EmbeddedExtractor implements Iterable<EmbeddedExtractor> {
@Override
public EmbeddedData extract(DirectoryNode dn) throws IOException {
EmbeddedData ed = super.extract(dn);
ed.setFilename(dn.getName()+".doc");
ed.setContentType("application/msword");
ed.setFilename(dn.getName() + DOC_EXT);
ed.setContentType(CONTENT_TYPE_DOC);
return ed;
}
}
@ -277,8 +290,8 @@ public class EmbeddedExtractor implements Iterable<EmbeddedExtractor> {
@Override
public EmbeddedData extract(DirectoryNode dn) throws IOException {
EmbeddedData ed = super.extract(dn);
ed.setFilename(dn.getName()+".xls");
ed.setContentType("application/vnd.ms-excel");
ed.setFilename(dn.getName() + XLS_EXT);
ed.setContentType(CONTENT_TYPE_XLS);
return ed;
}
}
@ -291,7 +304,7 @@ public class EmbeddedExtractor implements Iterable<EmbeddedExtractor> {
@Override
public EmbeddedData extract(DirectoryNode dn) throws IOException {
EmbeddedData ed = super.extract(dn);
ed.setFilename(dn.getName()+".ole");
ed.setFilename(dn.getName() + OLE_EXT);
// TODO: read the content type from CombObj stream
return ed;
}
@ -306,8 +319,11 @@ public class EmbeddedExtractor implements Iterable<EmbeddedExtractor> {
copyNodes(srcDir, destDir);
} else {
InputStream is = src.createDocumentInputStream(e);
dest.createDocument(e.getName(), is);
is.close();
try {
dest.createDocument(e.getName(), is);
} finally {
is.close();
}
}
}
}