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/FdfReader.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.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.HashMap;

import com.itextpdf.text.log.Counter;
import com.itextpdf.text.log.CounterFactory;
/** Reads an FDF form and makes the fields available
 * @author Paulo Soares
 */
public class FdfReader extends PdfReader {

    HashMap<String, PdfDictionary> fields;
    String fileSpec;
    PdfName encoding;

    /** Reads an FDF form.
     * @param filename the file name of the form
     * @throws IOException on error
     */
    public FdfReader(String filename) throws IOException {
        super(filename);
    }

    /** Reads an FDF form.
     * @param pdfIn the byte array with the form
     * @throws IOException on error
     */
    public FdfReader(byte pdfIn[]) throws IOException {
        super(pdfIn);
    }

    /** Reads an FDF form.
     * @param url the URL of the document
     * @throws IOException on error
     */
    public FdfReader(URL url) throws IOException {
        super(url);
    }

    /** Reads an FDF form.
     * @param is the <CODE>InputStream</CODE> containing the document. The stream is read to the
     * end but is not closed
     * @throws IOException on error
     */
    public FdfReader(InputStream is) throws IOException {
        super(is);
    }

	protected static Counter COUNTER = CounterFactory.getCounter(FdfReader.class);
	protected Counter getCounter() {
		return COUNTER;
	}
	
    @Override
    protected void readPdf() throws IOException {
        fields = new HashMap<String, PdfDictionary>();
        tokens.checkFdfHeader();
        rebuildXref();
        readDocObj();
        readFields();
    }

    protected void kidNode(PdfDictionary merged, String name) {
        PdfArray kids = merged.getAsArray(PdfName.KIDS);
        if (kids == null || kids.isEmpty()) {
            if (name.length() > 0)
                name = name.substring(1);
            fields.put(name, merged);
        }
        else {
            merged.remove(PdfName.KIDS);
            for (int k = 0; k < kids.size(); ++k) {
                PdfDictionary dic = new PdfDictionary();
                dic.merge(merged);
                PdfDictionary newDic = kids.getAsDict(k);
                PdfString t = newDic.getAsString(PdfName.T);
                String newName = name;
                if (t != null)
                    newName += "." + t.toUnicodeString();
                dic.merge(newDic);
                dic.remove(PdfName.T);
                kidNode(dic, newName);
            }
        }
    }

    protected void readFields() {
        catalog = trailer.getAsDict(PdfName.ROOT);
        PdfDictionary fdf = catalog.getAsDict(PdfName.FDF);
        if (fdf == null)
            return;
        PdfString fs = fdf.getAsString(PdfName.F);
        if (fs != null)
            fileSpec = fs.toUnicodeString();
        PdfArray fld = fdf.getAsArray(PdfName.FIELDS);
        if (fld == null)
            return;
        encoding = fdf.getAsName(PdfName.ENCODING);
        PdfDictionary merged = new PdfDictionary();
        merged.put(PdfName.KIDS, fld);
        kidNode(merged, "");
    }

    /** Gets all the fields. The map is keyed by the fully qualified
     * field name and the value is a merged <CODE>PdfDictionary</CODE>
     * with the field content.
     * @return all the fields
     */
    public HashMap<String, PdfDictionary> getFields() {
        return fields;
    }

    /** Gets the field dictionary.
     * @param name the fully qualified field name
     * @return the field dictionary
     */
    public PdfDictionary getField(String name) {
        return fields.get(name);
    }

    /**
     * Gets a byte[] containing a file that is embedded in the FDF.
     * @param name the fully qualified field name
     * @return the bytes of the file
     * @throws IOException
     * @since 5.0.1
     */
    public byte[] getAttachedFile(String name) throws IOException {
    	PdfDictionary field = fields.get(name);
    	if (field != null) {
    		PdfIndirectReference ir = (PRIndirectReference)field.get(PdfName.V);
    		PdfDictionary filespec = (PdfDictionary)getPdfObject(ir.getNumber());
    		PdfDictionary ef = filespec.getAsDict(PdfName.EF);
    		ir = (PRIndirectReference)ef.get(PdfName.F);
    		PRStream stream = (PRStream)getPdfObject(ir.getNumber());
    		return getStreamBytes(stream);
    	}
		return new byte[0];
    }

    /**
     * Gets the field value or <CODE>null</CODE> if the field does not
     * exist or has no value defined.
     * @param name the fully qualified field name
     * @return the field value or <CODE>null</CODE>
     */
    public String getFieldValue(String name) {
        PdfDictionary field = fields.get(name);
        if (field == null)
            return null;
        PdfObject v = getPdfObject(field.get(PdfName.V));
        if (v == null)
            return null;
        if (v.isName())
            return PdfName.decodeName(((PdfName)v).toString());
        else if (v.isString()) {
            PdfString vs = (PdfString)v;
            if (encoding == null || vs.getEncoding() != null)
                return vs.toUnicodeString();
            byte b[] = vs.getBytes();
            if (b.length >= 2 && b[0] == (byte)254 && b[1] == (byte)255)
                return vs.toUnicodeString();
            try {
                if (encoding.equals(PdfName.SHIFT_JIS))
                    return new String(b, "SJIS");
                else if (encoding.equals(PdfName.UHC))
                    return new String(b, "MS949");
                else if (encoding.equals(PdfName.GBK))
                    return new String(b, "GBK");
                else if (encoding.equals(PdfName.BIGFIVE))
                    return new String(b, "Big5");
                else if (encoding.equals(PdfName.UTF_8))
                    return new String(b, "UTF8");
            }
            catch (Exception e) {
            }
            return vs.toUnicodeString();
        }
        return null;
    }

    /** Gets the PDF file specification contained in the FDF.
     * @return the PDF file specification contained in the FDF
     */
    public String getFileSpec() {
        return fileSpec;
    }
}

com/itextpdf/text/pdf/FdfReader.java

 

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

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2021-07-03, 47873👍, 0💬