org.apache.poi.hslf.dev.SlideShowRecordDumper Maven / Gradle / Ivy
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this work for additional information regarding copyright ownership.
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package org.apache.poi.hslf.dev;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Iterator;
import org.apache.poi.hslf.HSLFSlideShow;
import org.apache.poi.hslf.record.Record;
import org.apache.poi.util.HexDump;
import org.apache.poi.ddf.DefaultEscherRecordFactory;
import org.apache.poi.ddf.EscherRecord;
import org.apache.poi.ddf.EscherContainerRecord;
import org.apache.poi.ddf.EscherTextboxRecord;
import org.apache.poi.hslf.record.EscherTextboxWrapper;
import org.apache.poi.hslf.record.TextCharsAtom;
import org.apache.poi.hslf.record.TextBytesAtom;
import org.apache.poi.hslf.record.StyleTextPropAtom;
/**
* This class provides a way to view the contents of a powerpoint file.
* It will use the recored layer to grok the contents of the file, and
* will print out what it finds.
*
* @author Nick Burch
*/
public final class SlideShowRecordDumper {
private boolean optVerbose;
private boolean optEscher;
private HSLFSlideShow doc;
/**
* right now this function takes one parameter: a ppt file, and outputs
* a dump of what it contains
*/
public static void main(String args[]) throws IOException
{
String filename = "";
boolean verbose = false;
boolean escher = false;
int ndx=0;
for (; ndx");
System.err.println("Valid Options:");
System.err.println("-escher\t\t: dump contents of escher records");
System.err.println("-verbose\t: dump binary contents of each record");
}
/**
* Constructs a Powerpoint dump from fileName. Parses the document
* and dumps out the contents
*
* @param fileName The name of the file to read.
* @throws IOException if there is a problem while parsing the document.
*/
public SlideShowRecordDumper(String fileName, boolean verbose, boolean escher) throws IOException
{
optVerbose = verbose;
optEscher = escher;
doc = new HSLFSlideShow(fileName);
}
public void printDump() throws IOException {
// Prints out the records in the tree
walkTree(0,0,doc.getRecords());
}
public String makeHex(int number, int padding) {
String hex = Integer.toHexString(number).toUpperCase();
while(hex.length() < padding) {
hex = "0" + hex;
}
return hex;
}
public String reverseHex(String s) {
StringBuffer ret = new StringBuffer();
// Get to a multiple of two
if((s.length() / 2) * 2 != s.length()) { s = "0" + s; }
// Break up into blocks
char[] c = s.toCharArray();
for(int i=c.length; i>0; i-=2) {
ret.append(c[i-2]);
ret.append(c[i-1]);
if(i != 2) { ret.append(' '); }
}
return ret.toString();
}
public int getDiskLen(Record r) throws IOException {
if (r == null) return 0;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
r.writeOut(baos);
byte[] b = baos.toByteArray();
return b.length;
}
public String getPrintableRecordContents(Record r) throws IOException {
if (r==null) return "<>";
ByteArrayOutputStream baos = new ByteArrayOutputStream();
r.writeOut(baos);
byte[] b = baos.toByteArray();
return HexDump.dump(b, 0, 0);
}
public String printEscherRecord( EscherRecord er ) {
String nl = System.getProperty( "line.separator" );
StringBuffer buf = new StringBuffer();
if (er instanceof EscherContainerRecord) {
buf.append(printEscherContainerRecord( (EscherContainerRecord)er ));
} else if (er instanceof EscherTextboxRecord) {
buf.append("EscherTextboxRecord:" + nl);
EscherTextboxWrapper etw = new EscherTextboxWrapper((EscherTextboxRecord)er);
Record children[] = etw.getChildRecords();
for (int j=0; j 0 && (children[j-1] instanceof TextCharsAtom ||
children[j-1] instanceof TextBytesAtom)) {
int size = (children[j-1] instanceof TextCharsAtom) ?
((TextCharsAtom)children[j-1]).getText().length() :
((TextBytesAtom)children[j-1]).getText().length();
StyleTextPropAtom tsp = (StyleTextPropAtom)children[j];
tsp.setParentTextSize(size);
} else {
buf.append("Error! Couldn't find preceding TextAtom for style\n");
}
buf.append(children[j].toString() + nl );
} else {
buf.append(children[j].toString() + nl );
}
}
} else {
buf.append( er.toString() );
}
return buf.toString();
}
public String printEscherContainerRecord( EscherContainerRecord ecr ) {
String indent = "";
String nl = System.getProperty( "line.separator" );
StringBuffer children = new StringBuffer();
int count = 0;
for ( Iterator iterator = ecr.getChildIterator(); iterator.hasNext(); )
{
if (count < 1) {
children.append( " children: " + nl );
}
String newIndent = " ";
EscherRecord record = iterator.next();
children.append(newIndent + "Child " + count + ":" + nl);
children.append( printEscherRecord(record) );
count++;
}
return
indent + ecr.getClass().getName() + " (" + ecr.getRecordName() + "):" + nl +
indent + " isContainer: " + ecr.isContainerRecord() + nl +
indent + " options: 0x" + HexDump.toHex( ecr.getOptions() ) + nl +
indent + " recordId: 0x" + HexDump.toHex( ecr.getRecordId() ) + nl +
indent + " numchildren: " + ecr.getChildRecords().size() + nl +
indent + children.toString();
}
public void walkTree(int depth, int pos, Record[] records) throws IOException {
int indent = depth;
String ind = "";
for(int i=0; i " + rHexType + " )");
System.out.println(ind + " Len is " + (len-8) + " (" + makeHex((len-8),8) + "), on disk len is " + len );
// print additional information for drawings and atoms
if (optEscher && cname.equals("PPDrawing")) {
DefaultEscherRecordFactory factory = new DefaultEscherRecordFactory();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
r.writeOut(baos);
byte[] b = baos.toByteArray();
EscherRecord er = factory.createRecord(b, 0);
er.fillFields(b, 0, factory);
System.out.println( printEscherRecord( er ) );
} else if(optVerbose && r.getChildRecords() == null) {
String recData = getPrintableRecordContents(r);
System.out.println(ind + recData );
}
System.out.println();
// If it has children, show them
if(r.getChildRecords() != null) {
walkTree((depth+3),pos+8,r.getChildRecords());
}
// Wind on the position marker
pos += len;
}
}
}