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/PdfString.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 com.itextpdf.text.pdf.internal.PdfIsoKeys;

import java.io.IOException;
import java.io.OutputStream;

/**
 * A <CODE>PdfString</CODE>-class is the PDF-equivalent of a
 * JAVA-<CODE>String</CODE>-object.
 * <P>
 * A string is a sequence of characters delimited by parenthesis.
 * If a string is too long to be conveniently placed on a single line, it may
 * be split across multiple lines by using the backslash character (\) at the
 * end of a line to indicate that the string continues on the following line.
 * Within a string, the backslash character is used as an escape to specify
 * unbalanced parenthesis, non-printing ASCII characters, and the backslash
 * character itself. Use of the \<I>ddd</I> escape sequence is the preferred
 * way to represent characters outside the printable ASCII character set.<BR>
 * This object is described in the 'Portable Document Format Reference Manual
 * version 1.7' section 3.2.3 (page 53-56).
 *
 * @see PdfObject
 * @see BadPdfFormatException
 */
public class PdfString extends PdfObject {
    
    // CLASS VARIABLES
    
    /** The value of this object. */
    protected String value = NOTHING;
    
    protected String originalValue = null;
    
    /** The encoding. */
    protected String encoding = TEXT_PDFDOCENCODING;
    
    protected int objNum = 0;
    
    protected int objGen = 0;
    
    protected boolean hexWriting = false;

    // CONSTRUCTORS
    
    /**
     * Constructs an empty <CODE>PdfString</CODE>-object.
     */
    public PdfString() {
        super(STRING);
    }
    
    /**
     * Constructs a <CODE>PdfString</CODE>-object containing a string in the
     * standard encoding <CODE>TEXT_PDFDOCENCODING</CODE>.
     *
     * @param value    the content of the string
     */
    public PdfString(String value) {
        super(STRING);
        this.value = value;
    }
    
    /**
     * Constructs a <CODE>PdfString</CODE>-object containing a string in the
     * specified encoding.
     *
     * @param value    the content of the string
     * @param encoding an encoding
     */
    public PdfString(String value, String encoding) {
        super(STRING);
        this.value = value;
        this.encoding = encoding;
    }
    
    /**
     * Constructs a <CODE>PdfString</CODE>-object.
     *
     * @param bytes    an array of <CODE>byte</CODE>
     */
    public PdfString(byte[] bytes) {
        super(STRING);
        value = PdfEncodings.convertToString(bytes, null);
        encoding = NOTHING;
    }
    
    // methods overriding some methods in PdfObject
    
    /**
     * Writes the PDF representation of this <CODE>PdfString</CODE> as an array
     * of <CODE>byte</CODE> to the specified <CODE>OutputStream</CODE>.
     * 
     * @param writer for backwards compatibility
     * @param os The <CODE>OutputStream</CODE> to write the bytes to.
     */
    public void toPdf(PdfWriter writer, OutputStream os) throws IOException {
        PdfWriter.checkPdfIsoConformance(writer, PdfIsoKeys.PDFISOKEY_OBJECT, this);
        byte b[] = getBytes();
        PdfEncryption crypto = null;
        if (writer != null)
            crypto = writer.getEncryption();
        if (crypto != null && !crypto.isEmbeddedFilesOnly())
            b = crypto.encryptByteArray(b);
        if (hexWriting) {
            ByteBuffer buf = new ByteBuffer();
            buf.append('<');
            int len = b.length;
            for (int k = 0; k < len; ++k)
                buf.appendHex(b[k]);
            buf.append('>');
            os.write(buf.toByteArray());
        }
        else
            os.write(StringUtils.escapeString(b));
    }
    
    /**
     * Returns the <CODE>String</CODE> value of this <CODE>PdfString</CODE>-object.
     *
     * @return A <CODE>String</CODE>
     */
    public String toString() {
        return value;
    }
    
    public byte[] getBytes() {
        if (bytes == null) {
            if (encoding != null && encoding.equals(TEXT_UNICODE) && PdfEncodings.isPdfDocEncoding(value))
                bytes = PdfEncodings.convertToBytes(value, TEXT_PDFDOCENCODING);
            else
                bytes = PdfEncodings.convertToBytes(value, encoding);
        }
        return bytes;
    }
    
    // other methods
    
    /**
     * Returns the Unicode <CODE>String</CODE> value of this
     * <CODE>PdfString</CODE>-object.
     *
     * @return A <CODE>String</CODE>
     */
    public String toUnicodeString() {
        if (encoding != null && encoding.length() != 0)
            return value;
        getBytes();
        if (bytes.length >= 2 && bytes[0] == (byte)254 && bytes[1] == (byte)255)
            return PdfEncodings.convertToString(bytes, PdfObject.TEXT_UNICODE);
        else
            return PdfEncodings.convertToString(bytes, PdfObject.TEXT_PDFDOCENCODING);
    }
    
    /**
     * Gets the encoding of this string.
     *
     * @return a <CODE>String</CODE>
     */
    public String getEncoding() {
        return encoding;
    }
    
    void setObjNum(int objNum, int objGen) {
        this.objNum = objNum;
        this.objGen = objGen;
    }
    
    /**
     * Decrypt an encrypted <CODE>PdfString</CODE>
     */
    void decrypt(PdfReader reader) {
        PdfEncryption decrypt = reader.getDecrypt();
        if (decrypt != null) {
            originalValue = value;
            decrypt.setHashKey(objNum, objGen);
            bytes = PdfEncodings.convertToBytes(value, null);
            bytes = decrypt.decryptByteArray(bytes);
            value = PdfEncodings.convertToString(bytes, null);
        }
    }
   
    public byte[] getOriginalBytes() {
        if (originalValue == null)
            return getBytes();
        return PdfEncodings.convertToBytes(originalValue, null);
    }
    
    public PdfString setHexWriting(boolean hexWriting) {
        this.hexWriting = hexWriting;
        return this;
    }
    
    public boolean isHexWriting() {
        return hexWriting;
    }
}

com/itextpdf/text/pdf/PdfString.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, 47897👍, 0💬