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-/*
- * Copyright 2003, 2004 by Paulo Soares.
- *
- * 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.
- *
- * 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.security.SignatureException;
-import java.io.OutputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.EOFException;
-import java.io.RandomAccessFile;
-import java.io.File;
-import java.io.InputStream;
-import com.lowagie.text.DocumentException;
-import com.lowagie.text.ExceptionConverter;
-import com.lowagie.text.DocWriter;
-import com.lowagie.text.Rectangle;
-import com.lowagie.text.Image;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Iterator;
-
-/** Applies extra content to the pages of a PDF document.
- * This extra content can be all the objects allowed in PdfContentByte
- * including pages from other Pdfs. The original PDF will keep
- * all the interactive elements including bookmarks, links and form fields.
- * <p>
- * It is also possible to change the field values and to
- * flatten them. New fields can be added but not flattened.
- * @author Paulo Soares (psoares@consiste.pt)
- */
-public class PdfStamper {
- /**
- * The writer
- */
- protected PdfStamperImp stamper;
- private HashMap moreInfo;
- private boolean hasSignature;
- private PdfSignatureAppearance sigApp;
-
- /** Starts the process of adding extra content to an existing PDF
- * document.
- * @param reader the original document. It cannot be reused
- * @param os the output stream
- * @throws DocumentException on error
- * @throws IOException on error
- */
- public PdfStamper(PdfReader reader, OutputStream os) throws DocumentException, IOException {
- stamper = new PdfStamperImp(reader, os, '\0', false);
- }
-
- /**
- * Starts the process of adding extra content to an existing PDF
- * document.
- * @param reader the original document. It cannot be reused
- * @param os the output stream
- * @param pdfVersion the new pdf version or '\0' to keep the same version as the original
- * document
- * @throws DocumentException on error
- * @throws IOException on error
- */
- public PdfStamper(PdfReader reader, OutputStream os, char pdfVersion) throws DocumentException, IOException {
- stamper = new PdfStamperImp(reader, os, pdfVersion, false);
- }
-
- /**
- * Starts the process of adding extra content to an existing PDF
- * document, possibly as a new revision.
- * @param reader the original document. It cannot be reused
- * @param os the output stream
- * @param pdfVersion the new pdf version or '\0' to keep the same version as the original
- * document
- * @param append if <CODE>true</CODE> appends the document changes as a new revision. This is
- * only useful for multiple signatures as nothing is gained in speed or memory
- * @throws DocumentException on error
- * @throws IOException on error
- */
- public PdfStamper(PdfReader reader, OutputStream os, char pdfVersion, boolean append) throws DocumentException, IOException {
- stamper = new PdfStamperImp(reader, os, pdfVersion, append);
- }
-
- /** Gets the optional <CODE>String</CODE> map to add or change values in
- * the info dictionary.
- * @return the map or <CODE>null</CODE>
- *
- */
- public HashMap getMoreInfo() {
- return this.moreInfo;
- }
-
- /** An optional <CODE>String</CODE> map to add or change values in
- * the info dictionary. Entries with <CODE>null</CODE>
- * values delete the key in the original info dictionary
- * @param moreInfo additional entries to the info dictionary
- *
- */
- public void setMoreInfo(HashMap moreInfo) {
- this.moreInfo = moreInfo;
- }
-
- /**
- * Inserts a blank page. All the pages above and including <CODE>pageNumber</CODE> will
- * be shifted up. If <CODE>pageNumber</CODE> is bigger than the total number of pages
- * the new page will be the last one.
- * @param pageNumber the page number position where the new page will be inserted
- * @param mediabox the size of the new page
- */
- public void insertPage(int pageNumber, Rectangle mediabox) {
- stamper.insertPage(pageNumber, mediabox);
- }
-
- /**
- * Gets the signing instance. The appearances and other parameters can the be set.
- * @return the signing instance
- */
- public PdfSignatureAppearance getSignatureAppearance() {
- return sigApp;
- }
-
- private String getNewSigName() {
- AcroFields af = getAcroFields();
- String name = "Signature";
- int step = 0;
- boolean found = false;
- while (!found) {
- ++step;
- String n1 = name + step;
- if (af.getFieldItem(n1) != null)
- continue;
- n1 += ".";
- found = true;
- for (Iterator it = af.getFields().keySet().iterator(); it.hasNext();) {
- String fn = (String)it.next();
- if (fn.startsWith(n1)) {
- found = false;
- break;
- }
- }
- }
- name += step;
- return name;
- }
- /**
- * Closes the document. No more content can be written after the
- * document is closed.
- * <p>
- * If closing a signed document with an external signature the closing must be done
- * in the <CODE>PdfSignatureAppearance</CODE> instance.
- * @throws DocumentException on error
- * @throws IOException on error
- */
- public void close() throws DocumentException, IOException {
- if (!hasSignature) {
- stamper.close(moreInfo);
- return;
- }
- sigApp.preClose();
- PdfSigGenericPKCS sig = sigApp.getSigStandard();
- PdfLiteral lit = (PdfLiteral)sig.get(PdfName.CONTENTS);
- int totalBuf = (lit.getPosLength() - 2) / 2;
- byte buf[] = new byte[8192];
- int n;
- InputStream inp = sigApp.getRangeStream();
- try {
- while ((n = inp.read(buf)) > 0) {
- sig.getSigner().update(buf, 0, n);
- }
- }
- catch (SignatureException se) {
- throw new ExceptionConverter(se);
- }
- buf = new byte[totalBuf];
- byte[] bsig = sig.getSignerContents();
- System.arraycopy(bsig, 0, buf, 0, bsig.length);
- PdfString str = new PdfString(buf);
- str.setHexWriting(true);
- PdfDictionary dic = new PdfDictionary();
- dic.put(PdfName.CONTENTS, str);
- sigApp.close(dic);
- stamper.reader.close();
- }
-
- private static int indexArray(byte bout[], int position, String search) {
- byte ss[] = PdfEncodings.convertToBytes(search, null);
- while (true) {
- int k;
- for (k = 0; k < ss.length; ++k) {
- if (ss[k] != bout[position + k])
- break;
- }
- if (k == ss.length)
- return position;
- ++position;
- }
- }
-
- private static int indexFile(RandomAccessFile raf, int position, String search) throws IOException {
- byte ss[] = PdfEncodings.convertToBytes(search, null);
- while (true) {
- raf.seek(position);
- int k;
- for (k = 0; k < ss.length; ++k) {
- int b = raf.read();
- if (b < 0)
- throw new EOFException("Unexpected EOF");
- if (ss[k] != (byte)b)
- break;
- }
- if (k == ss.length)
- return position;
- ++position;
- }
- }
-
- /** Gets a <CODE>PdfContentByte</CODE> to write under the page of
- * the original document.
- * @param pageNum the page number where the extra content is written
- * @return a <CODE>PdfContentByte</CODE> to write under the page of
- * the original document
- */
- public PdfContentByte getUnderContent(int pageNum) {
- return stamper.getUnderContent(pageNum);
- }
-
- /** Gets a <CODE>PdfContentByte</CODE> to write over the page of
- * the original document.
- * @param pageNum the page number where the extra content is written
- * @return a <CODE>PdfContentByte</CODE> to write over the page of
- * the original document
- */
- public PdfContentByte getOverContent(int pageNum) {
- return stamper.getOverContent(pageNum);
- }
-
- /** Checks if the content is automatically adjusted to compensate
- * the original page rotation.
- * @return the auto-rotation status
- */
- public boolean isRotateContents() {
- return stamper.isRotateContents();
- }
-
- /** Flags the content to be automatically adjusted to compensate
- * the original page rotation. The default is <CODE>true</CODE>.
- * @param rotateContents <CODE>true</CODE> to set auto-rotation, <CODE>false</CODE>
- * otherwise
- */
- public void setRotateContents(boolean rotateContents) {
- stamper.setRotateContents(rotateContents);
- }
-
- /** Sets the encryption options for this document. The userPassword and the
- * ownerPassword can be null or have zero length. In this case the ownerPassword
- * is replaced by a random string. The open permissions for the document can be
- * AllowPrinting, AllowModifyContents, AllowCopy, AllowModifyAnnotations,
- * AllowFillIn, AllowScreenReaders, AllowAssembly and AllowDegradedPrinting.
- * The permissions can be combined by ORing them.
- * @param userPassword the user password. Can be null or empty
- * @param ownerPassword the owner password. Can be null or empty
- * @param permissions the user permissions
- * @param strength128Bits <code>true</code> for 128 bit key length, <code>false</code> for 40 bit key length
- * @throws DocumentException if anything was already written to the output
- */
- public void setEncryption(byte userPassword[], byte ownerPassword[], int permissions, boolean strength128Bits) throws DocumentException {
- if (stamper.isAppend())
- throw new DocumentException("Append mode does not support changing the encryption status.");
- if (stamper.isContentWritten())
- throw new DocumentException("Content was already written to the output.");
- stamper.setEncryption(userPassword, ownerPassword, permissions, strength128Bits);
- }
-
- /**
- * Sets the encryption options for this document. The userPassword and the
- * ownerPassword can be null or have zero length. In this case the ownerPassword
- * is replaced by a random string. The open permissions for the document can be
- * AllowPrinting, AllowModifyContents, AllowCopy, AllowModifyAnnotations,
- * AllowFillIn, AllowScreenReaders, AllowAssembly and AllowDegradedPrinting.
- * The permissions can be combined by ORing them.
- * @param strength <code>true</code> for 128 bit key length, <code>false</code> for 40 bit key length
- * @param userPassword the user password. Can be null or empty
- * @param ownerPassword the owner password. Can be null or empty
- * @param permissions the user permissions
- * @throws DocumentException if anything was already written to the output
- */
- public void setEncryption(boolean strength, String userPassword, String ownerPassword, int permissions) throws DocumentException {
- setEncryption(DocWriter.getISOBytes(userPassword), DocWriter.getISOBytes(ownerPassword), permissions, strength);
- }
-
- /** Gets a page from other PDF document. Note that calling this method more than
- * once with the same parameters will retrieve the same object.
- * @param reader the PDF document where the page is
- * @param pageNumber the page number. The first page is 1
- * @return the template representing the imported page
- */
- public PdfImportedPage getImportedPage(PdfReader reader, int pageNumber) {
- return stamper.getImportedPage(reader, pageNumber);
- }
-
- /** Gets the underlying PdfWriter.
- * @return the underlying PdfWriter
- */
- public PdfWriter getWriter() {
- return stamper;
- }
-
- /** Gets the underlying PdfReader.
- * @return the underlying PdfReader
- */
- public PdfReader getReader() {
- return stamper.reader;
- }
-
- /** Gets the <CODE>AcroFields</CODE> object that allows to get and set field values
- * and to merge FDF forms.
- * @return the <CODE>AcroFields</CODE> object
- */
- public AcroFields getAcroFields() {
- return stamper.getAcroFields();
- }
-
- /** Determines if the fields are flattened on close. The fields added with
- * {@link #addAnnotation(PdfAnnotation,int)} will never be flattened.
- * @param flat <CODE>true</CODE> to flatten the fields, <CODE>false</CODE>
- * to keep the fields
- */
- public void setFormFlattening(boolean flat) {
- stamper.setFormFlattening(flat);
- }
-
- /** Determines if the FreeText annotations are flattened on close.
- * @param flat <CODE>true</CODE> to flatten the FreeText annotations, <CODE>false</CODE>
- * (the default) to keep the FreeText annotations as active content.
- */
- public void setFreeTextFlattening(boolean flat) {
- stamper.setFreeTextFlattening(flat);
- }
-
- /**
- * Adds an annotation of form field in a specific page. This page number
- * can be overridden with {@link PdfAnnotation#setPlaceInPage(int)}.
- * @param annot the annotation
- * @param page the page
- */
- public void addAnnotation(PdfAnnotation annot, int page) {
- stamper.addAnnotation(annot, page);
- }
-
- /**
- * Adds the comments present in an FDF file.
- * @param fdf the FDF file
- * @throws IOException on error
- */
- public void addComments(FdfReader fdf) throws IOException {
- stamper.addComments(fdf);
- }
-
- /**
- * Sets the bookmarks. The list structure is defined in
- * {@link SimpleBookmark}.
- * @param outlines the bookmarks or <CODE>null</CODE> to remove any
- * @throws IOException on error
- */
- public void setOutlines(List outlines) throws IOException {
- stamper.setOutlines(outlines);
- }
-
- /**
- * Sets the thumbnail image for a page.
- * @param image the image
- * @param page the page
- * @throws PdfException on error
- * @throws DocumentException on error
- */
- public void setThumbnail(Image image, int page) throws PdfException, DocumentException {
- stamper.setThumbnail(image, page);
- }
-
- /**
- * Adds <CODE>name</CODE> to the list of fields that will be flattened on close,
- * all the other fields will remain. If this method is never called or is called
- * with invalid field names, all the fields will be flattened.
- * <p>
- * Calling <CODE>setFormFlattening(true)</CODE> is needed to have any kind of
- * flattening.
- * @param name the field name
- * @return <CODE>true</CODE> if the field exists, <CODE>false</CODE> otherwise
- */
- public boolean partialFormFlattening(String name) {
- return stamper.partialFormFlattening(name);
- }
-
- /** Adds a JavaScript action at the document level. When the document
- * opens all this JavaScript runs. The existing JavaScript will be replaced.
- * @param js the JavaScript code
- */
- public void addJavaScript(String js) {
- stamper.addJavaScript(js, !PdfEncodings.isPdfDocEncoding(js));
- }
-
- /** Adds a file attachment at the document level. Existing attachments will be kept.
- * @param description the file description
- * @param fileStore an array with the file. If it's <CODE>null</CODE>
- * the file will be read from the disk
- * @param file the path to the file. It will only be used if
- * <CODE>fileStore</CODE> is not <CODE>null</CODE>
- * @param fileDisplay the actual file name stored in the pdf
- * @throws IOException on error
- */
- public void addFileAttachment(String description, byte fileStore[], String file, String fileDisplay) throws IOException {
- addFileAttachment(description, PdfFileSpecification.fileEmbedded(stamper, file, fileDisplay, fileStore));
- }
-
- /** Adds a file attachment at the document level. Existing attachments will be kept.
- * @param description the file description
- * @param fs the file specification
- */
- public void addFileAttachment(String description, PdfFileSpecification fs) throws IOException {
- stamper.addFileAttachment(description, fs);
- }
-
- /**
- * Sets the viewer preferences.
- * @param preferences the viewer preferences
- * @see PdfWriter#setViewerPreferences(int)
- */
- public void setViewerPreferences(int preferences) {
- stamper.setViewerPreferences(preferences);
- }
-
- /**
- * Sets the XMP metadata.
- * @param xmp
- * @see PdfWriter#setXmpMetadata(byte[])
- */
- public void setXmpMetadata(byte[] xmp) {
- stamper.setXmpMetadata(xmp);
- }
-
- /**
- * Gets the 1.5 compression status.
- * @return <code>true</code> if the 1.5 compression is on
- */
- public boolean isFullCompression() {
- return stamper.isFullCompression();
- }
-
- /**
- * Sets the document's compression to the new 1.5 mode with object streams and xref
- * streams. It can be set at any time but once set it can't be unset.
- */
- public void setFullCompression() {
- if (stamper.isAppend())
- return;
- stamper.setFullCompression();
- }
-
- /**
- * Sets the open and close page additional action.
- * @param actionType the action type. It can be <CODE>PdfWriter.PAGE_OPEN</CODE>
- * or <CODE>PdfWriter.PAGE_CLOSE</CODE>
- * @param action the action to perform
- * @param page the page where the action will be applied. The first page is 1
- * @throws PdfException if the action type is invalid
- */
- public void setPageAction(PdfName actionType, PdfAction action, int page) throws PdfException {
- stamper.setPageAction(actionType, action, page);
- }
-
- /**
- * Sets the display duration for the page (for presentations)
- * @param seconds the number of seconds to display the page. A negative value removes the entry
- * @param page the page where the duration will be applied. The first page is 1
- */
- public void setDuration(int seconds, int page) {
- stamper.setDuration(seconds, page);
- }
-
- /**
- * Sets the transition for the page
- * @param transition the transition object. A <code>null</code> removes the transition
- * @param page the page where the transition will be applied. The first page is 1
- */
- public void setTransition(PdfTransition transition, int page) {
- stamper.setTransition(transition, page);
- }
-
- /**
- * Applies a digital signature to a document, possibly as a new revision, making
- * possible multiple signatures. The returned PdfStamper
- * can be used normally as the signature is only applied when closing.
- * <p>
- * A possible use for adding a signature without invalidating an existing one is:
- * <p>
- * <pre>
- * KeyStore ks = KeyStore.getInstance("pkcs12");
- * ks.load(new FileInputStream("my_private_key.pfx"), "my_password".toCharArray());
- * String alias = (String)ks.aliases().nextElement();
- * PrivateKey key = (PrivateKey)ks.getKey(alias, "my_password".toCharArray());
- * Certificate[] chain = ks.getCertificateChain(alias);
- * PdfReader reader = new PdfReader("original.pdf");
- * FileOutputStream fout = new FileOutputStream("signed.pdf");
- * PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0', new
- * File("/temp"), true);
- * PdfSignatureAppearance sap = stp.getSignatureAppearance();
- * sap.setCrypto(key, chain, null, PdfSignatureAppearance.WINCER_SIGNED);
- * sap.setReason("I'm the author");
- * sap.setLocation("Lisbon");
- * // comment next line to have an invisible signature
- * sap.setVisibleSignature(new Rectangle(100, 100, 200, 200), 1, null);
- * stp.close();
- * </pre>
- * @param reader the original document
- * @param os the output stream or <CODE>null</CODE> to keep the document in the temporary file
- * @param pdfVersion the new pdf version or '\0' to keep the same version as the original
- * document
- * @param tempFile location of the temporary file. If it's a directory a temporary file will be created there.
- * If it's a file it will be used directly. The file will be deleted on exit unless <CODE>os</CODE> is null.
- * In that case the document can be retrieved directly from the temporary file. If it's <CODE>null</CODE>
- * no temporary file will be created and memory will be used
- * @param append if <CODE>true</CODE> the signature and all the other content will be added as a
- * new revision thus not invalidating existing signatures
- * @return a <CODE>PdfStamper</CODE>
- * @throws DocumentException on error
- * @throws IOException on error
- */
- public static PdfStamper createSignature(PdfReader reader, OutputStream os, char pdfVersion, File tempFile, boolean append) throws DocumentException, IOException {
- PdfStamper stp;
- if (tempFile == null) {
- ByteBuffer bout = new ByteBuffer();
- stp = new PdfStamper(reader, bout, pdfVersion, append);
- stp.sigApp = new PdfSignatureAppearance(stp.stamper);
- stp.sigApp.setSigout(bout);
- }
- else {
- if (tempFile.isDirectory())
- tempFile = File.createTempFile("pdf", null, tempFile);
- FileOutputStream fout = new FileOutputStream(tempFile);
- stp = new PdfStamper(reader, fout, pdfVersion, append);
- stp.sigApp = new PdfSignatureAppearance(stp.stamper);
- stp.sigApp.setTempFile(tempFile);
- }
- stp.sigApp.setOriginalout(os);
- stp.sigApp.setStamper(stp);
- stp.hasSignature = true;
- return stp;
- }
-
- /**
- * Applies a digital signature to a document. The returned PdfStamper
- * can be used normally as the signature is only applied when closing.
- * <p>
- * Note that the pdf is created in memory.
- * <p>
- * A possible use is:
- * <p>
- * <pre>
- * KeyStore ks = KeyStore.getInstance("pkcs12");
- * ks.load(new FileInputStream("my_private_key.pfx"), "my_password".toCharArray());
- * String alias = (String)ks.aliases().nextElement();
- * PrivateKey key = (PrivateKey)ks.getKey(alias, "my_password".toCharArray());
- * Certificate[] chain = ks.getCertificateChain(alias);
- * PdfReader reader = new PdfReader("original.pdf");
- * FileOutputStream fout = new FileOutputStream("signed.pdf");
- * PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0');
- * PdfSignatureAppearance sap = stp.getSignatureAppearance();
- * sap.setCrypto(key, chain, null, PdfSignatureAppearance.WINCER_SIGNED);
- * sap.setReason("I'm the author");
- * sap.setLocation("Lisbon");
- * // comment next line to have an invisible signature
- * sap.setVisibleSignature(new Rectangle(100, 100, 200, 200), 1, null);
- * stp.close();
- * </pre>
- * @param reader the original document
- * @param os the output stream
- * @param pdfVersion the new pdf version or '\0' to keep the same version as the original
- * document
- * @throws DocumentException on error
- * @throws IOException on error
- * @return a <CODE>PdfStamper</CODE>
- */
- public static PdfStamper createSignature(PdfReader reader, OutputStream os, char pdfVersion) throws DocumentException, IOException {
- return createSignature(reader, os, pdfVersion, null, false);
- }
-
- /**
- * Applies a digital signature to a document. The returned PdfStamper
- * can be used normally as the signature is only applied when closing.
- * <p>
- * A possible use is:
- * <p>
- * <pre>
- * KeyStore ks = KeyStore.getInstance("pkcs12");
- * ks.load(new FileInputStream("my_private_key.pfx"), "my_password".toCharArray());
- * String alias = (String)ks.aliases().nextElement();
- * PrivateKey key = (PrivateKey)ks.getKey(alias, "my_password".toCharArray());
- * Certificate[] chain = ks.getCertificateChain(alias);
- * PdfReader reader = new PdfReader("original.pdf");
- * FileOutputStream fout = new FileOutputStream("signed.pdf");
- * PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0', new File("/temp"));
- * PdfSignatureAppearance sap = stp.getSignatureAppearance();
- * sap.setCrypto(key, chain, null, PdfSignatureAppearance.WINCER_SIGNED);
- * sap.setReason("I'm the author");
- * sap.setLocation("Lisbon");
- * // comment next line to have an invisible signature
- * sap.setVisibleSignature(new Rectangle(100, 100, 200, 200), 1, null);
- * stp.close();
- * </pre>
- * @param reader the original document
- * @param os the output stream or <CODE>null</CODE> to keep the document in the temporary file
- * @param pdfVersion the new pdf version or '\0' to keep the same version as the original
- * document
- * @param tempFile location of the temporary file. If it's a directory a temporary file will be created there.
- * If it's a file it will be used directly. The file will be deleted on exit unless <CODE>os</CODE> is null.
- * In that case the document can be retrieved directly from the temporary file. If it's <CODE>null</CODE>
- * no temporary file will be created and memory will be used
- * @return a <CODE>PdfStamper</CODE>
- * @throws DocumentException on error
- * @throws IOException on error
- */
- public static PdfStamper createSignature(PdfReader reader, OutputStream os, char pdfVersion, File tempFile) throws DocumentException, IOException
- {
- return createSignature(reader, os, pdfVersion, tempFile, false);
- }
-} \ No newline at end of file