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Support optionally dumping the properties stream 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1688091 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch 2015-06-29 06:05:42 +00:00
parent efc96e1d8e
commit 8eae3df77e
1 changed files with 45 additions and 4 deletions
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49
src/java/org/apache/poi/poifs/dev/POIFSDump.java
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@ -16,22 +16,43 @@
==================================================================== */
package org.apache.poi.poifs.dev;
import org.apache.poi.poifs.filesystem.*;
import java.io.FileInputStream;
import java.io.File;
import java.io.IOException;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.nio.ByteBuffer;
import java.util.Iterator;
import org.apache.poi.poifs.filesystem.DirectoryEntry;
import org.apache.poi.poifs.filesystem.DocumentInputStream;
import org.apache.poi.poifs.filesystem.DocumentNode;
import org.apache.poi.poifs.filesystem.Entry;
import org.apache.poi.poifs.filesystem.NPOIFSFileSystem;
import org.apache.poi.poifs.filesystem.NPOIFSStream;
import org.apache.poi.poifs.storage.HeaderBlock;
/**
* Dump internal structure of a OLE2 file into file system
*/
public class POIFSDump {
public static void main(String[] args) throws Exception {
if (args.length == 0) {
System.err.println("Must specify at least one file to dump");
System.exit(1);
}
boolean withProps = false;
for (int i = 0; i < args.length; i++) {
if (args[i].equalsIgnoreCase("-dumprops") ||
args[i].equalsIgnoreCase("-dump-props") ||
args[i].equalsIgnoreCase("-dump-properties")) {
withProps = true;
continue;
}
System.out.println("Dumping " + args[i]);
FileInputStream is = new FileInputStream(args[i]);
NPOIFSFileSystem fs = new NPOIFSFileSystem(is);
@ -42,6 +63,13 @@ public class POIFSDump {
file.mkdir();
dump(root, file);
if (withProps) {
Field headerF = NPOIFSFileSystem.class.getDeclaredField("_header");
headerF.setAccessible(true);
HeaderBlock header = (HeaderBlock)headerF.get(fs);
dump(fs, header.getPropertyStart(), file);
}
}
}
@ -72,4 +100,17 @@ public class POIFSDump {
}
}
}
public static void dump(NPOIFSFileSystem fs, int startBlock, File parent) throws IOException {
File file = new File(parent, "properties");
FileOutputStream out = new FileOutputStream(file);
NPOIFSStream stream = new NPOIFSStream(fs, startBlock);
byte[] b = new byte[fs.getBigBlockSize()];
for (ByteBuffer bb : stream) {
int len = bb.remaining();
bb.get(b);
out.write(b, 0, len);
}
out.close();
}
}