106 lines
3.3 KiB
Java
106 lines
3.3 KiB
Java
/**
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* EmbeddedFile.java
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*
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Copyright (c) 2018, Innovatics Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and / or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.pdfjet;
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import java.io.ByteArrayOutputStream;
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import java.io.InputStream;
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import java.util.zip.Deflater;
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import java.util.zip.DeflaterOutputStream;
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/**
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* Used to embed file objects.
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* The file objects must added to the PDF before drawing on the first page.
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*
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*/
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public class EmbeddedFile {
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protected int objNumber = -1;
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protected String fileName = null;
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public EmbeddedFile(PDF pdf, String fileName, InputStream stream, boolean compress) throws Exception {
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this.fileName = fileName;
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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byte[] buf = new byte[2048];
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int number;
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while ((number = stream.read(buf, 0, buf.length)) > 0) {
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baos.write(buf, 0, number);
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}
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stream.close();
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if (compress) {
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buf = baos.toByteArray();
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baos = new ByteArrayOutputStream();
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DeflaterOutputStream dos = new DeflaterOutputStream(baos, new Deflater());
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dos.write(buf, 0, buf.length);
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dos.finish();
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}
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pdf.newobj();
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pdf.append("<<\n");
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pdf.append("/Type /EmbeddedFile\n");
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if (compress) {
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pdf.append("/Filter /FlateDecode\n");
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}
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pdf.append("/Length ");
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pdf.append(baos.size());
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pdf.append("\n");
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pdf.append(">>\n");
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pdf.append("stream\n");
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pdf.append(baos);
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pdf.append("\nendstream\n");
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pdf.endobj();
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pdf.newobj();
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pdf.append("<<\n");
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pdf.append("/Type /Filespec\n");
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pdf.append("/F (");
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pdf.append(fileName);
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pdf.append(")\n");
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pdf.append("/EF <</F ");
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pdf.append(pdf.objNumber - 1);
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pdf.append(" 0 R>>\n");
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pdf.append(">>\n");
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pdf.endobj();
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this.objNumber = pdf.objNumber;
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pdf.embeddedFiles.add(this);
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}
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public String getFileName() {
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return fileName;
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}
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} // End of EmbeddedFile.java
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