/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2017 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: sales@itextpdf.com
*/
package com.itextpdf.text.pdf;
import com.itextpdf.text.error_messages.MessageLocalization;
import com.itextpdf.text.io.StreamUtil;
import com.itextpdf.text.pdf.collection.PdfCollectionItem;
import com.itextpdf.text.pdf.internal.PdfIsoKeys;
import java.io.*;
import java.net.URL;
/** Specifies a file or an URL. The file can be extern or embedded.
*
* @author Paulo Soares
*/
public class PdfFileSpecification extends PdfDictionary {
protected PdfWriter writer;
protected PdfIndirectReference ref;
/** Creates a new instance of PdfFileSpecification. The static methods are preferred. */
public PdfFileSpecification() {
super(PdfName.FILESPEC);
}
/**
* Creates a file specification of type URL.
* @param writer the <CODE>PdfWriter</CODE>
* @param url the URL
* @return the file specification
*/
public static PdfFileSpecification url(PdfWriter writer, String url) {
PdfFileSpecification fs = new PdfFileSpecification();
fs.writer = writer;
fs.put(PdfName.FS, PdfName.URL);
fs.put(PdfName.F, new PdfString(url));
return fs;
}
/**
* Creates a file specification with the file embedded. The file may
* come from the file system or from a byte array. The data is flate compressed.
* @param writer the <CODE>PdfWriter</CODE>
* @param filePath the file path
* @param fileDisplay the file information that is presented to the user
* @param fileStore the byte array with the file. If it is not <CODE>null</CODE>
* it takes precedence over <CODE>filePath</CODE>
* @throws IOException on error
* @return the file specification
*/
public static PdfFileSpecification fileEmbedded(PdfWriter writer, String filePath, String fileDisplay, byte fileStore[]) throws IOException {
return fileEmbedded(writer, filePath, fileDisplay, fileStore, PdfStream.BEST_COMPRESSION);
}
/**
* Creates a file specification with the file embedded. The file may
* come from the file system or from a byte array. The data is flate compressed.
* @param writer the <CODE>PdfWriter</CODE>
* @param filePath the file path
* @param fileDisplay the file information that is presented to the user
* @param fileStore the byte array with the file. If it is not <CODE>null</CODE>
* it takes precedence over <CODE>filePath</CODE>
* @param compressionLevel the compression level to be used for compressing the file
* it takes precedence over <CODE>filePath</CODE>
* @throws IOException on error
* @return the file specification
* @since 2.1.3
*/
public static PdfFileSpecification fileEmbedded(PdfWriter writer, String filePath, String fileDisplay, byte fileStore[], int compressionLevel) throws IOException {
return fileEmbedded(writer, filePath, fileDisplay, fileStore, null, null, compressionLevel);
}
/**
* Creates a file specification with the file embedded. The file may
* come from the file system or from a byte array.
* @param writer the <CODE>PdfWriter</CODE>
* @param filePath the file path
* @param fileDisplay the file information that is presented to the user
* @param fileStore the byte array with the file. If it is not <CODE>null</CODE>
* it takes precedence over <CODE>filePath</CODE>
* @param compress sets the compression on the data. Multimedia content will benefit little
* from compression
* @throws IOException on error
* @return the file specification
*/
public static PdfFileSpecification fileEmbedded(PdfWriter writer, String filePath, String fileDisplay, byte fileStore[], boolean compress) throws IOException {
return fileEmbedded(writer, filePath, fileDisplay, fileStore, null, null, compress ? PdfStream.BEST_COMPRESSION : PdfStream.NO_COMPRESSION);
}
/**
* Creates a file specification with the file embedded. The file may
* come from the file system or from a byte array.
* @param writer the <CODE>PdfWriter</CODE>
* @param filePath the file path
* @param fileDisplay the file information that is presented to the user
* @param fileStore the byte array with the file. If it is not <CODE>null</CODE>
* it takes precedence over <CODE>filePath</CODE>
* @param compress sets the compression on the data. Multimedia content will benefit little
* from compression
* @param mimeType the optional mimeType
* @param fileParameter the optional extra file parameters such as the creation or modification date
* @throws IOException on error
* @return the file specification
*/
public static PdfFileSpecification fileEmbedded(PdfWriter writer, String filePath, String fileDisplay, byte fileStore[], boolean compress, String mimeType, PdfDictionary fileParameter) throws IOException {
return fileEmbedded(writer, filePath, fileDisplay, fileStore, mimeType, fileParameter, compress ? PdfStream.BEST_COMPRESSION : PdfStream.NO_COMPRESSION);
}
/**
* Creates a file specification with the file embedded. The file may
* come from the file system or from a byte array.
* @param writer the <CODE>PdfWriter</CODE>
* @param filePath the file path
* @param fileDisplay the file information that is presented to the user
* @param fileStore the byte array with the file. If it is not <CODE>null</CODE>
* it takes precedence over <CODE>filePath</CODE>
* @param mimeType the optional mimeType
* @param fileParameter the optional extra file parameters such as the creation or modification date
* @param compressionLevel the level of compression
* @throws IOException on error
* @return the file specification
* @since 2.1.3
*/
public static PdfFileSpecification fileEmbedded(PdfWriter writer, String filePath, String fileDisplay, byte fileStore[], String mimeType, PdfDictionary fileParameter, int compressionLevel) throws IOException {
PdfFileSpecification fs = new PdfFileSpecification();
fs.writer = writer;
fs.put(PdfName.F, new PdfString(fileDisplay));
fs.setUnicodeFileName(fileDisplay, false);
PdfEFStream stream;
InputStream in = null;
PdfIndirectReference ref;
PdfIndirectReference refFileLength = null;
try {
if (fileStore == null) {
refFileLength = writer.getPdfIndirectReference();
File file = new File(filePath);
if (file.canRead()) {
in = new FileInputStream(filePath);
}
else {
if (filePath.startsWith("file:/") || filePath.startsWith("http://") || filePath.startsWith("https://") || filePath.startsWith("jar:")) {
in = new URL(filePath).openStream();
}
else {
in = StreamUtil.getResourceStream(filePath);
if (in == null)
throw new IOException(MessageLocalization.getComposedMessage("1.not.found.as.file.or.resource", filePath));
}
}
stream = new PdfEFStream(in, writer);
}
else {
stream = new PdfEFStream(fileStore);
}
stream.put(PdfName.TYPE, PdfName.EMBEDDEDFILE);
stream.flateCompress(compressionLevel);
PdfDictionary param = new PdfDictionary();
if (fileParameter != null) {
param.merge(fileParameter);
}
if (!param.contains(PdfName.MODDATE)) {
param.put(PdfName.MODDATE, new PdfDate());
}
if (fileStore == null) {
stream.put(PdfName.PARAMS, refFileLength);
}
else {
param.put(PdfName.SIZE, new PdfNumber(stream.getRawLength()));
stream.put(PdfName.PARAMS, param);
}
if (mimeType != null)
stream.put(PdfName.SUBTYPE, new PdfName(mimeType));
ref = writer.addToBody(stream).getIndirectReference();
if (fileStore == null) {
stream.writeLength();
param.put(PdfName.SIZE, new PdfNumber(stream.getRawLength()));
writer.addToBody(param, refFileLength);
}
}
finally {
if (in != null)
try{in.close();}catch(Exception e){}
}
PdfDictionary f = new PdfDictionary();
f.put(PdfName.F, ref);
f.put(PdfName.UF, ref);
fs.put(PdfName.EF, f);
return fs;
}
/**
* Creates a file specification for an external file.
* @param writer the <CODE>PdfWriter</CODE>
* @param filePath the file path
* @return the file specification
*/
public static PdfFileSpecification fileExtern(PdfWriter writer, String filePath) {
PdfFileSpecification fs = new PdfFileSpecification();
fs.writer = writer;
fs.put(PdfName.F, new PdfString(filePath));
fs.setUnicodeFileName(filePath, false);
return fs;
}
/**
* Gets the indirect reference to this file specification.
* Multiple invocations will retrieve the same value.
* @throws IOException on error
* @return the indirect reference
*/
public PdfIndirectReference getReference() throws IOException {
if (ref != null)
return ref;
ref = writer.addToBody(this).getIndirectReference();
return ref;
}
/**
* Sets the file name (the key /F) string as an hex representation
* to support multi byte file names. The name must have the slash and
* backslash escaped according to the file specification rules
* @param fileName the file name as a byte array
*/
public void setMultiByteFileName(byte fileName[]) {
put(PdfName.F, new PdfString(fileName).setHexWriting(true));
}
/**
* Adds the unicode file name (the key /UF). This entry was introduced
* in PDF 1.7. The filename must have the slash and backslash escaped
* according to the file specification rules.
* @param filename the filename
* @param unicode if true, the filename is UTF-16BE encoded; otherwise PDFDocEncoding is used;
*/
public void setUnicodeFileName(String filename, boolean unicode) {
put(PdfName.UF, new PdfString(filename, unicode ? PdfObject.TEXT_UNICODE : PdfObject.TEXT_PDFDOCENCODING));
}
/**
* Sets a flag that indicates whether an external file referenced by the file
* specification is volatile. If the value is true, applications should never
* cache a copy of the file.
* @param volatile_file if true, the external file should not be cached
*/
public void setVolatile(boolean volatile_file) {
put(PdfName.V, new PdfBoolean(volatile_file));
}
/**
* Adds a description for the file that is specified here.
* @param description some text
* @param unicode if true, the text is added as a unicode string
*/
public void addDescription(String description, boolean unicode) {
put(PdfName.DESC, new PdfString(description, unicode ? PdfObject.TEXT_UNICODE : PdfObject.TEXT_PDFDOCENCODING));
}
/**
* Adds the Collection item dictionary.
*/
public void addCollectionItem(PdfCollectionItem ci) {
put(PdfName.CI, ci);
}
@Override
public void toPdf(final PdfWriter writer, final OutputStream os) throws IOException {
PdfWriter.checkPdfIsoConformance(writer, PdfIsoKeys.PDFISOKEY_FILESPEC, this);
super.toPdf(writer, os);
}
}