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/internal/PdfVersionImp.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.internal;

import java.io.IOException;

import com.itextpdf.text.DocWriter;
import com.itextpdf.text.pdf.OutputStreamCounter;
import com.itextpdf.text.pdf.PdfDeveloperExtension;
import com.itextpdf.text.pdf.PdfDictionary;
import com.itextpdf.text.pdf.PdfName;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.text.pdf.interfaces.PdfVersion;

/**
 * Stores the PDF version information,
 * knows how to write a PDF Header,
 * and how to add the version to the catalog (if necessary).
 */

public class PdfVersionImp implements PdfVersion {
    
    /** Contains different strings that are part of the header. */
    public static final byte[][] HEADER = {
    	DocWriter.getISOBytes("\n"),
    	DocWriter.getISOBytes("%PDF-"),
    	DocWriter.getISOBytes("\n%\u00e2\u00e3\u00cf\u00d3\n")
    };
    
	/** Indicates if the header was already written. */
	protected boolean headerWasWritten = false;
	/** Indicates if we are working in append mode. */
	protected boolean appendmode = false;
	/** The version that was or will be written to the header. */
	protected char header_version = PdfWriter.VERSION_1_4;
	/** The version that will be written to the catalog. */
	protected PdfName catalog_version = null;
    /** The version that user can use to get the actual version of PDF document **/
    protected char version = PdfWriter.VERSION_1_4;

	/**
	 * The extensions dictionary.
	 * @since	2.1.6
	 */
	protected PdfDictionary extensions = null;
	
	/**
	 * @see com.itextpdf.text.pdf.interfaces.PdfVersion#setPdfVersion(char)
	 */
	public void setPdfVersion(char version) {
		this.version = version;
        if (headerWasWritten || appendmode) {
			setPdfVersion(getVersionAsName(version));
		}
		else {
			this.header_version = version;
		}
	}
	
	/**
	 * @see com.itextpdf.text.pdf.interfaces.PdfVersion#setAtLeastPdfVersion(char)
	 */
	public void setAtLeastPdfVersion(char version) {
		if (version > header_version) {
			setPdfVersion(version);
		}
	}
	
	/**
	 * @see com.itextpdf.text.pdf.interfaces.PdfVersion#setPdfVersion(com.itextpdf.text.pdf.PdfName)
	 */
	public void setPdfVersion(PdfName version) {
		if (catalog_version == null || catalog_version.compareTo(version) < 0) {
			this.catalog_version = version;
		}
	}
	
	/**
	 * Sets the append mode.
	 */
	public void setAppendmode(boolean appendmode) {
		this.appendmode = appendmode;
	}
	
	/**
	 * Writes the header to the OutputStreamCounter.
	 * @throws IOException 
	 */
	public void writeHeader(OutputStreamCounter os) throws IOException {
		if (appendmode) {
			os.write(HEADER[0]);
		}
		else {
			os.write(HEADER[1]);
			os.write(getVersionAsByteArray(header_version));
			os.write(HEADER[2]);
			headerWasWritten = true;
		}
	}
	
	/**
	 * Returns the PDF version as a name.
	 * @param version	the version character.
	 */
	public PdfName getVersionAsName(char version) {
		switch(version) {
		case PdfWriter.VERSION_1_2:
			return PdfWriter.PDF_VERSION_1_2;
		case PdfWriter.VERSION_1_3:
			return PdfWriter.PDF_VERSION_1_3;
		case PdfWriter.VERSION_1_4:
			return PdfWriter.PDF_VERSION_1_4;
		case PdfWriter.VERSION_1_5:
			return PdfWriter.PDF_VERSION_1_5;
		case PdfWriter.VERSION_1_6:
			return PdfWriter.PDF_VERSION_1_6;
		case PdfWriter.VERSION_1_7:
			return PdfWriter.PDF_VERSION_1_7;
		default:
			return PdfWriter.PDF_VERSION_1_4;
		}
	}
	
	/**
	 * Returns the version as a byte[].
	 * @param version the version character
	 */
	public byte[] getVersionAsByteArray(char version) {
		return DocWriter.getISOBytes(getVersionAsName(version).toString().substring(1));
	}

	/** Adds the version to the Catalog dictionary. */
	public void addToCatalog(PdfDictionary catalog) {
		if(catalog_version != null) {
			catalog.put(PdfName.VERSION, catalog_version);
		}
		if (extensions != null) {
			catalog.put(PdfName.EXTENSIONS, extensions);
		}
	}

	/**
	 * @see com.itextpdf.text.pdf.interfaces.PdfVersion#addDeveloperExtension(com.itextpdf.text.pdf.PdfDeveloperExtension)
	 * @since	2.1.6
	 */
	public void addDeveloperExtension(PdfDeveloperExtension de) {
		if (extensions == null) {
			extensions = new PdfDictionary();
		}
		else {
			PdfDictionary extension = extensions.getAsDict(de.getPrefix());
			if (extension != null) {
				int diff = de.getBaseversion().compareTo(extension.getAsName(PdfName.BASEVERSION));
				if (diff < 0)
					return;
				diff = de.getExtensionLevel() - extension.getAsNumber(PdfName.EXTENSIONLEVEL).intValue();
				if (diff <= 0)
					return;
			}
		}
		extensions.put(de.getPrefix(), de.getDeveloperExtensions());
	}

    public char getVersion() {
        return version;
    }

}

com/itextpdf/text/pdf/internal/PdfVersionImp.java

 

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2021-07-03, 47972👍, 0💬