/*
* $Id$
*
* Copyright 2002 Mark Thompson
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* This class by Mark Thompson. Copyright (C) 2002 Mark Thompson
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
package com.lowagie.text.pdf;
import java.io.IOException;
import java.io.PrintStream;
import java.util.Iterator;
/**
* List a PDF file in human-readable form (for debugging reasons mostly)
* @author Mark Thompson
*/
public class PdfLister {
/** the printStream you want to write the output to. */
PrintStream out;
/**
* Create a new lister object.
* @param out
*/
public PdfLister(PrintStream out) {
this.out = out;
}
/**
* Visualizes a PDF object.
* @param object a com.lowagie.text.pdf object
*/
public void listAnyObject(PdfObject object)
{
switch (object.type()) {
case PdfObject.ARRAY:
listArray((PdfArray)object);
break;
case PdfObject.DICTIONARY:
listDict((PdfDictionary) object);
break;
case PdfObject.STRING:
out.println("(" + object.toString() + ")");
break;
default:
out.println(object.toString());
break;
}
}
/**
* Visualizes a PdfDictionary object.
* @param dictionary a com.lowagie.text.pdf.PdfDictionary object
*/
public void listDict(PdfDictionary dictionary)
{
out.println("<<");
PdfName key;
PdfObject value;
for (Iterator i = dictionary.getKeys().iterator(); i.hasNext(); ) {
key = (PdfName) i.next();
value = dictionary.get(key);
out.print(key.toString());
out.print(' ');
listAnyObject(value);
}
out.println(">>");
}
/**
* Visualizes a PdfArray object.
* @param array a com.lowagie.text.pdf.PdfArray object
*/
public void listArray(PdfArray array)
{
out.println('[');
for (Iterator i = array.listIterator(); i.hasNext(); ) {
PdfObject item = (PdfObject)i.next();
listAnyObject(item);
}
out.println(']');
}
/**
* Visualizes a Stream.
* @param stream
* @param reader
*/
public void listStream(PRStream stream, PdfReaderInstance reader)
{
try {
listDict(stream);
out.println("startstream");
byte[] b = PdfReader.getStreamBytes(stream);
// byte buf[] = new byte[Math.min(stream.getLength(), 4096)];
// int r = 0;
// stream.openStream(reader);
// for (;;) {
// r = stream.readStream(buf, 0, buf.length);
// if (r == 0) break;
// out.write(buf, 0, r);
// }
// stream.closeStream();
int len = b.length - 1;
for (int k = 0; k < len; ++k) {
if (b[k] == '\r' && b[k + 1] != '\n')
b[k] = (byte)'\n';
}
out.println(new String(b));
out.println("endstream");
} catch (IOException e) {
System.err.println("I/O exception: " + e);
// } catch (java.util.zip.DataFormatException e) {
// System.err.println("Data Format Exception: " + e);
}
}
/**
* Visualizes an imported page
* @param iPage
*/
public void listPage(PdfImportedPage iPage)
{
int pageNum = iPage.getPageNumber();
PdfReaderInstance readerInst = iPage.getPdfReaderInstance();
PdfReader reader = readerInst.getReader();
PdfDictionary page = reader.getPageN(pageNum);
listDict(page);
PdfObject obj = PdfReader.getPdfObject(page.get(PdfName.CONTENTS));
if (obj == null)
return;
switch (obj.type) {
case PdfObject.STREAM:
listStream((PRStream)obj, readerInst);
break;
case PdfObject.ARRAY:
for (Iterator i = ((PdfArray)obj).listIterator(); i.hasNext();) {
PdfObject o = PdfReader.getPdfObject((PdfObject)i.next());
listStream((PRStream)o, readerInst);
out.println("-----------");
}
break;
}
}
}