iText 5 itextpdf.jar Source Code

itextpdf.jar is a component in iText 5 Java library to provide core functionalities. iText Java library allows you to generate and manage PDF documents.

The Source Code files are provided at iText GitHub site.

You can compile it to generate your JAR file, using pom.xml as the build configuration file.

The source code of itextpdf-5.5.14.jar is provided below:

✍: FYIcenter.com

com/itextpdf/text/pdf/PRStream.java

/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2020 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 java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.Deflater;
import java.util.zip.DeflaterOutputStream;

import com.itextpdf.text.Document;
import com.itextpdf.text.ExceptionConverter;

public class PRStream extends PdfStream {
    
    protected PdfReader reader;
    protected long offset;
    protected int length;
    
    //added by ujihara for decryption
    protected int objNum = 0;
    protected int objGen = 0;
    
    public PRStream(PRStream stream, PdfDictionary newDic) {
        reader = stream.reader;
        offset = stream.offset;
        length = stream.length;
        compressed = stream.compressed;
        compressionLevel = stream.compressionLevel;
        streamBytes = stream.streamBytes;
        bytes = stream.bytes;
        objNum = stream.objNum;
        objGen = stream.objGen;
        if (newDic != null)
            putAll(newDic);
        else
            hashMap.putAll(stream.hashMap);
    }

    public PRStream(PRStream stream, PdfDictionary newDic, PdfReader reader) {
        this(stream, newDic);
        this.reader = reader;
    }

    public PRStream(PdfReader reader, long offset) {
        this.reader = reader;
        this.offset = offset;
    }

    public PRStream(PdfReader reader, byte conts[]) {
    	this(reader, conts, DEFAULT_COMPRESSION);
    }

    /**
     * Creates a new PDF stream object that will replace a stream
     * in a existing PDF file.
     * @param	reader	the reader that holds the existing PDF
     * @param	conts	the new content
     * @param	compressionLevel	the compression level for the content
     * @since	2.1.3 (replacing the existing constructor without param compressionLevel)
     */
    public PRStream(PdfReader reader, byte[] conts, int compressionLevel) {
        this.reader = reader;
        this.offset = -1;
        if (Document.compress) {
            try {
                ByteArrayOutputStream stream = new ByteArrayOutputStream();
                Deflater deflater = new Deflater(compressionLevel);
                DeflaterOutputStream zip = new DeflaterOutputStream(stream, deflater);
                zip.write(conts);
                zip.close();
                deflater.end();
                bytes = stream.toByteArray();
            }
            catch (IOException ioe) {
                throw new ExceptionConverter(ioe);
            }
            put(PdfName.FILTER, PdfName.FLATEDECODE);
        }
        else
            bytes = conts;
        setLength(bytes.length);
    }
    
    /**
     * Sets the data associated with the stream, either compressed or
     * uncompressed. Note that the data will never be compressed if
     * Document.compress is set to false.
     * 
     * @param data raw data, decrypted and uncompressed.
     * @param compress true if you want the stream to be compressed.
     * @since	iText 2.1.1
     */
    public void setData(byte[] data, boolean compress) {
    	setData(data, compress, DEFAULT_COMPRESSION);
    }
    
    /**
     * Sets the data associated with the stream, either compressed or
     * uncompressed. Note that the data will never be compressed if
     * Document.compress is set to false.
     * 
     * @param data raw data, decrypted and uncompressed.
     * @param compress true if you want the stream to be compressed.
     * @param compressionLevel	a value between -1 and 9 (ignored if compress == false)
     * @since	iText 2.1.3
     */
    public void setData(byte[] data, boolean compress, int compressionLevel) {
        remove(PdfName.FILTER);
        this.offset = -1;
        if (Document.compress && compress) {
            try {
                ByteArrayOutputStream stream = new ByteArrayOutputStream();
                Deflater deflater = new Deflater(compressionLevel);
                DeflaterOutputStream zip = new DeflaterOutputStream(stream, deflater);
                zip.write(data);
                zip.close();
                deflater.end();
                bytes = stream.toByteArray();
                this.compressionLevel = compressionLevel;
            }
            catch (IOException ioe) {
                throw new ExceptionConverter(ioe);
            }
            put(PdfName.FILTER, PdfName.FLATEDECODE);
        }
        else
            bytes = data;
        setLength(bytes.length);
    }
    
    /**
     * Sets the data associated with the stream, as-is.  This method will not
     * remove or change any existing filter: the data has to match an existing
     * filter or an appropriate filter has to be set.
     * 
     * @param data data, possibly encrypted and/or compressed
     * @since 5.5.0
     */
    public void setDataRaw(byte[] data) {
        this.offset = -1;
        bytes = data;
        setLength(bytes.length);
    }
    
    /**Sets the data associated with the stream
     * @param data raw data, decrypted and uncompressed.
     */
    public void setData(byte[] data) {
        setData(data, true);
    }

    public void setLength(int length) {
        this.length = length;
        put(PdfName.LENGTH, new PdfNumber(length));
    }
    
    public long getOffset() {
        return offset;
    }
    
    public int getLength() {
        return length;
    }
    
    public PdfReader getReader() {
        return reader;
    }
    
    public byte[] getBytes() {
        return bytes;
    }
    
    public void setObjNum(int objNum, int objGen) {
        this.objNum = objNum;
        this.objGen = objGen;
    }
    
    int getObjNum() {
        return objNum;
    }
    
    int getObjGen() {
        return objGen;
    }
    
    public void toPdf(PdfWriter writer, OutputStream os) throws IOException {
        byte[] b = PdfReader.getStreamBytesRaw(this);
        PdfEncryption crypto = null;
        if (writer != null)
            crypto = writer.getEncryption();
        PdfObject objLen = get(PdfName.LENGTH);
        int nn = b.length;
        if (crypto != null)
            nn = crypto.calculateStreamSize(nn);
        put(PdfName.LENGTH, new PdfNumber(nn));
        superToPdf(writer, os);
        put(PdfName.LENGTH, objLen);
        os.write(STARTSTREAM);
        if (length > 0) {
            if (crypto != null && !crypto.isEmbeddedFilesOnly())
                b = crypto.encryptByteArray(b);
            os.write(b);
        }
        os.write(ENDSTREAM);
    }
}

com/itextpdf/text/pdf/PRStream.java

 

⇒ iText-2.1.6.jar - iText, a JAVA-PDF library

⇐ iText layout.jar Source Code

⇑ Download and Install iText Java Library

⇑⇑ iText for PDF Generation

2021-07-03, 48057👍, 0💬