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/*
* Copyright 2003 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.aowagie.text.pdf;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
/** Specifies a file or an URL. The file can be extern or embedded.
*
* @author Paulo Soares ([email protected])
*/
public class PdfFileSpecification extends PdfDictionary {
private PdfWriter writer;
private PdfIndirectReference ref;
/** Creates a new instance of PdfFileSpecification. The static methods are preferred. */
public PdfFileSpecification() {
super(PdfName.FILESPEC);
}
/**
* 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 PdfWriter
* @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 null
* it takes precedence over filePath
* @throws IOException on error
* @return the file specification
*/
public static PdfFileSpecification fileEmbedded(final PdfWriter writer, final String filePath, final String fileDisplay, final 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 PdfWriter
* @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 null
* it takes precedence over filePath
* @param compressionLevel the compression level to be used for compressing the file
* it takes precedence over filePath
* @throws IOException on error
* @return the file specification
* @since 2.1.3
*/
private static PdfFileSpecification fileEmbedded(final PdfWriter writer, final String filePath, final String fileDisplay, final byte fileStore[], final 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 PdfWriter
* @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 null
* it takes precedence over filePath
* @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
*/
private static PdfFileSpecification fileEmbedded(final PdfWriter writer, final String filePath, final String fileDisplay, final byte fileStore[], final String mimeType, final PdfDictionary fileParameter, final int compressionLevel) throws IOException {
final 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;
try {
refFileLength = writer.getPdfIndirectReference();
if (fileStore == null) {
final 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 = BaseFont.getResourceStream(filePath);
if (in == null) {
throw new IOException(filePath + " not found as file or resource.");
}
}
}
stream = new PdfEFStream(in, writer);
} else {
stream = new PdfEFStream(fileStore);
}
stream.put(PdfName.TYPE, PdfName.EMBEDDEDFILE);
stream.flateCompress(compressionLevel);
stream.put(PdfName.PARAMS, refFileLength);
if (mimeType != null) {
stream.put(PdfName.SUBTYPE, new PdfName(mimeType));
}
ref = writer.addToBody(stream).getIndirectReference();
if (fileStore == null) {
stream.writeLength();
}
final PdfDictionary params = new PdfDictionary();
if (fileParameter != null) {
params.merge(fileParameter);
}
params.put(PdfName.SIZE, new PdfNumber(stream.getRawLength()));
writer.addToBody(params, refFileLength);
}
finally {
if (in != null) {
try{in.close();}catch(final Exception e){}
}
}
final 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 PdfWriter
* @param filePath the file path
* @return the file specification
*/
public static PdfFileSpecification fileExtern(final PdfWriter writer, final String filePath) {
final 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 (this.ref != null) {
return this.ref;
}
this.ref = this.writer.addToBody(this).getIndirectReference();
return this.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(final 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;
*/
private void setUnicodeFileName(final String filename, final 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(final 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
*/
void addDescription(final String description, final boolean unicode) {
put(PdfName.DESC, new PdfString(description, unicode ? PdfObject.TEXT_UNICODE : PdfObject.TEXT_PDFDOCENCODING));
}
}
