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/PdfArray.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;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;

/**
 * <CODE>PdfArray</CODE> is the PDF Array object.
 * <P>
 * An array is a sequence of PDF objects. An array may contain a mixture of
 * object types.
 * An array is written as a left square bracket ([), followed by a sequence of
 * objects, followed by a right square bracket (]).<BR>
 * This object is described in the 'Portable Document Format Reference Manual
 * version 1.7' section 3.2.5 (page 58).
 *
 * @see		PdfObject
 */
public class PdfArray extends PdfObject implements Iterable<PdfObject> {

	// CLASS VARIABLES

	/** this is the actual array of PdfObjects */
    protected ArrayList<PdfObject> arrayList;

    // constructors

    /**
     * Constructs an empty <CODE>PdfArray</CODE>-object.
     */
    public PdfArray() {
        super(ARRAY);
        arrayList = new ArrayList<PdfObject>();
    }

    public PdfArray(int capacity) {
        super(ARRAY);
        arrayList = new ArrayList<PdfObject>(capacity);
    }

    /**
     * Constructs an <CODE>PdfArray</CODE>-object, containing 1
     * <CODE>PdfObject</CODE>.
     *
     * @param	object		a <CODE>PdfObject</CODE> that has to be added to the array
     */
    public PdfArray(final PdfObject object) {
        super(ARRAY);
        arrayList = new ArrayList<PdfObject>();
        arrayList.add(object);
    }

    /**
     * Constructs a <CODE>PdfArray</CODE>-object, containing all
     * <CODE>float</CODE> values in a specified array.
     *
     * The <CODE>float</CODE> values are internally converted to
     * <CODE>PdfNumber</CODE> objects.
     *
     * @param values    an array of <CODE>float</CODE> values to be added
     */
    public PdfArray(final float values[]) {
        super(ARRAY);
        arrayList = new ArrayList<PdfObject>();
        add(values);
    }

    /**
     * Constructs a <CODE>PdfArray</CODE>-object, containing all
     * <CODE>int</CODE> values in a specified array.
     *
     * The <CODE>int</CODE> values are internally converted to
     * <CODE>PdfNumber</CODE> objects.
     *
     * @param values    an array of <CODE>int</CODE> values to be added
     */
    public PdfArray(final int values[]) {
        super(ARRAY);
        arrayList = new ArrayList<PdfObject>();
        add(values);
    }

    /**
     * Constructs a <CODE>PdfArray</CODE>, containing all elements of a
     * specified <CODE>ArrayList</CODE>.
     *
     * @param l    an <CODE>ArrayList</CODE> with <CODE>PdfObject</CODE>s to be
     *   added to the array
     * @throws ClassCastException if the <CODE>ArrayList</CODE> contains
     *   something that isn't a <CODE>PdfObject</CODE>
     * @since 2.1.3
     */
    public PdfArray(final List<PdfObject> l) {
        this();
        for (PdfObject element : l)
            add(element);
    }

    /**
     * Constructs an <CODE>PdfArray</CODE>-object, containing all
     * <CODE>PdfObject</CODE>s in a specified <CODE>PdfArray</CODE>.
     *
     * @param array    a <CODE>PdfArray</CODE> to be added to the array
     */
    public PdfArray(final PdfArray array) {
        super(ARRAY);
        arrayList = new ArrayList<PdfObject>(array.arrayList);
    }

    // METHODS OVERRIDING SOME PDFOBJECT METHODS

    /**
     * Writes the PDF representation of this <CODE>PdfArray</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.
     */
    @Override
    public void toPdf(final PdfWriter writer, final OutputStream os) throws IOException {
        PdfWriter.checkPdfIsoConformance(writer, PdfIsoKeys.PDFISOKEY_OBJECT, this);
        os.write('[');

        Iterator<PdfObject> i = arrayList.iterator();
        PdfObject object;
        int type = 0;
        if (i.hasNext()) {
            object = i.next();
            if (object == null)
                object = PdfNull.PDFNULL;
            object.toPdf(writer, os);
        }
        while (i.hasNext()) {
            object = i.next();
            if (object == null)
                object = PdfNull.PDFNULL;
            type = object.type();
            if (type != PdfObject.ARRAY && type != PdfObject.DICTIONARY && type != PdfObject.NAME && type != PdfObject.STRING)
                os.write(' ');
            object.toPdf(writer, os);
        }
        os.write(']');
    }

    /**
     * Returns a string representation of this <CODE>PdfArray</CODE>.
     *
     * The string representation consists of a list of all
     * <CODE>PdfObject</CODE>s contained in this <CODE>PdfArray</CODE>,
     * enclosed in square brackets ("[]"). Adjacent elements are separated
     * by the characters ", " (comma and space).
     *
     * @return the string representation of this <CODE>PdfArray</CODE>
     */
    @Override
    public String toString() {
    	return arrayList.toString();
    }

    // ARRAY CONTENT METHODS

    /**
     * Overwrites a specified location of the array, returning the previous
     * value
     *
     * @param idx The index of the element to be overwritten
     * @param obj new value for the specified index
     * @throws IndexOutOfBoundsException if the specified position doesn't exist
     * @return the previous value
     * @since 2.1.5
     */
    public PdfObject set(final int idx, final PdfObject obj) {
        return arrayList.set(idx, obj);
    }

    /**
     * Remove the element at the specified position from the array.
     *
     * Shifts any subsequent elements to the left (subtracts one from their
     * indices).
     *
     * @param idx The index of the element to be removed.
     * @throws IndexOutOfBoundsException the specified position doesn't exist
     * @since 2.1.5
     */
    public PdfObject remove(final int idx) {
        return arrayList.remove(idx);
    }

    /**
     * Get the internal arrayList for this PdfArray.  Not Recommended.
     *
     * @deprecated
     * @return the internal ArrayList.  Naughty Naughty.
     */
    @Deprecated
    public ArrayList<PdfObject> getArrayList() {
        return arrayList;
    }

    /**
     * Returns the number of entries in the array.
     *
     * @return		the size of the ArrayList
     */
    public int size() {
        return arrayList.size();
    }

    /**
     * Returns <CODE>true</CODE> if the array is empty.
     *
     * @return <CODE>true</CODE> if the array is empty
     * @since 2.1.5
     */
    public boolean isEmpty() {
        return arrayList.isEmpty();
    }

    /**
     * Adds a <CODE>PdfObject</CODE> to the end of the <CODE>PdfArray</CODE>.
     *
     * The <CODE>PdfObject</CODE> will be the last element.
     *
     * @param object <CODE>PdfObject</CODE> to add
     * @return always <CODE>true</CODE>
     */
    public boolean add(final PdfObject object) {
        return arrayList.add(object);
    }

    /**
     * Adds an array of <CODE>float</CODE> values to end of the
     * <CODE>PdfArray</CODE>.
     *
     * The values will be the last elements.
     * The <CODE>float</CODE> values are internally converted to
     * <CODE>PdfNumber</CODE> objects.
     *
     * @param values An array of <CODE>float</CODE> values to add
     * @return always <CODE>true</CODE>
     */
    public boolean add(final float values[]) {
        for (int k = 0; k < values.length; ++k)
            arrayList.add(new PdfNumber(values[k]));
        return true;
    }

    /**
     * Adds an array of <CODE>int</CODE> values to end of the <CODE>PdfArray</CODE>.
     *
     * The values will be the last elements.
     * The <CODE>int</CODE> values are internally converted to
     * <CODE>PdfNumber</CODE> objects.
     *
     * @param values An array of <CODE>int</CODE> values to add
     * @return always <CODE>true</CODE>
     */
    public boolean add(final int values[]) {
        for (int k = 0; k < values.length; ++k)
            arrayList.add(new PdfNumber(values[k]));
        return true;
    }

    /**
     * Inserts the specified element at the specified position.
     *
     * Shifts the element currently at that position (if any) and
     * any subsequent elements to the right (adds one to their indices).
     *
     * @param index The index at which the specified element is to be inserted
     * @param element The element to be inserted
     * @throws IndexOutOfBoundsException if the specified index is larger than the
     *   last position currently set, plus 1.
     * @since 2.1.5
     */
    public void add(final int index, final PdfObject element) {
        arrayList.add(index, element);
    }

    /**
     * Inserts a <CODE>PdfObject</CODE> at the beginning of the
     * <CODE>PdfArray</CODE>.
     *
     * The <CODE>PdfObject</CODE> will be the first element, any other elements
     * will be shifted to the right (adds one to their indices).
     *
     * @param object The <CODE>PdfObject</CODE> to add
     */
    public void addFirst(final PdfObject object) {
        arrayList.add(0, object);
    }

    /**
     * Checks if the <CODE>PdfArray</CODE> already contains a certain
     * <CODE>PdfObject</CODE>.
     *
     * @param object The <CODE>PdfObject</CODE> to check
     * @return <CODE>true</CODE>
     */
    public boolean contains(final PdfObject object) {
        return arrayList.contains(object);
    }

    /**
     * Returns the list iterator for the array.
     *
     * @return a ListIterator
     */
    public ListIterator<PdfObject> listIterator() {
        return arrayList.listIterator();
    }

    /**
     * Returns the <CODE>PdfObject</CODE> with the specified index.
     *
     * A possible indirect references is not resolved, so the returned
     * <CODE>PdfObject</CODE> may be either a direct object or an indirect
     * reference, depending on how the object is stored in the
     * <CODE>PdfArray</CODE>.
     *
     * @param idx The index of the <CODE>PdfObject</CODE> to be returned
     * @return A <CODE>PdfObject</CODE>
     */
    public PdfObject getPdfObject(final int idx) {
        return arrayList.get(idx);
    }

    /**
     * Returns the <CODE>PdfObject</CODE> with the specified index, resolving
     * a possible indirect reference to a direct object.
     *
     * Thus this method will never return a <CODE>PdfIndirectReference</CODE>
     * object.
     *
     * @param idx The index of the <CODE>PdfObject</CODE> to be returned
     * @return A direct <CODE>PdfObject</CODE> or <CODE>null</CODE>
     */
    public PdfObject getDirectObject(final int idx) {
        return PdfReader.getPdfObject(getPdfObject(idx));
    }

    // DOWNCASTING GETTERS
    // @author Mark A Storer (2/17/06)

    /**
     * Returns a <CODE>PdfObject</CODE> as a <CODE>PdfDictionary</CODE>,
     * resolving indirect references.
     *
     * The object corresponding to the specified index is retrieved and
     * resolvedto a direct object.
     * If it is a <CODE>PdfDictionary</CODE>, it is cast down and returned as such.
     * Otherwise <CODE>null</CODE> is returned.
     *
     * @param idx The index of the <CODE>PdfObject</CODE> to be returned
     * @return the corresponding <CODE>PdfDictionary</CODE> object,
     *   or <CODE>null</CODE>
     */
    public PdfDictionary getAsDict(final int idx) {
        PdfDictionary dict = null;
        PdfObject orig = getDirectObject(idx);
        if (orig != null && orig.isDictionary())
            dict = (PdfDictionary) orig;
        return dict;
    }

    /**
     * Returns a <CODE>PdfObject</CODE> as a <CODE>PdfArray</CODE>,
     * resolving indirect references.
     *
     * The object corresponding to the specified index is retrieved and
     * resolved to a direct object.
     * If it is a <CODE>PdfArray</CODE>, it is cast down and returned as such.
     * Otherwise <CODE>null</CODE> is returned.
     *
     * @param idx The index of the <CODE>PdfObject</CODE> to be returned
     * @return the corresponding <CODE>PdfArray</CODE> object,
     *   or <CODE>null</CODE>
     */
    public PdfArray getAsArray(final int idx) {
        PdfArray array = null;
        PdfObject orig = getDirectObject(idx);
        if (orig != null && orig.isArray())
            array = (PdfArray) orig;
        return array;
    }

    /**
     * Returns a <CODE>PdfObject</CODE> as a <CODE>PdfStream</CODE>,
     * resolving indirect references.
     *
     * The object corresponding to the specified index is retrieved and
     * resolved to a direct object.
     * If it is a <CODE>PdfStream</CODE>, it is cast down and returned as such.
     * Otherwise <CODE>null</CODE> is returned.
     *
     * @param idx The index of the <CODE>PdfObject</CODE> to be returned
     * @return the corresponding <CODE>PdfStream</CODE> object,
     *   or <CODE>null</CODE>
     */
    public PdfStream getAsStream(final int idx) {
        PdfStream stream = null;
        PdfObject orig = getDirectObject(idx);
        if (orig != null && orig.isStream())
            stream = (PdfStream) orig;
        return stream;
    }

    /**
     * Returns a <CODE>PdfObject</CODE> as a <CODE>PdfString</CODE>,
     * resolving indirect references.
     *
     * The object corresponding to the specified index is retrieved and
     * resolved to a direct object.
     * If it is a <CODE>PdfString</CODE>, it is cast down and returned as such.
     * Otherwise <CODE>null</CODE> is returned.
     *
     * @param idx The index of the <CODE>PdfObject</CODE> to be returned
     * @return the corresponding <CODE>PdfString</CODE> object,
     *   or <CODE>null</CODE>
     */
    public PdfString getAsString(final int idx) {
        PdfString string = null;
        PdfObject orig = getDirectObject(idx);
        if (orig != null && orig.isString())
            string = (PdfString) orig;
        return string;
    }

    /**
     * Returns a <CODE>PdfObject</CODE> as a <CODE>PdfNumber</CODE>,
     * resolving indirect references.
     *
     * The object corresponding to the specified index is retrieved and
     * resolved to a direct object.
     * If it is a <CODE>PdfNumber</CODE>, it is cast down and returned as such.
     * Otherwise <CODE>null</CODE> is returned.
     *
     * @param idx The index of the <CODE>PdfObject</CODE> to be returned
     * @return the corresponding <CODE>PdfNumber</CODE> object,
     *   or <CODE>null</CODE>
     */
    public PdfNumber getAsNumber(final int idx) {
        PdfNumber number = null;
        PdfObject orig = getDirectObject(idx);
        if (orig != null && orig.isNumber())
            number = (PdfNumber) orig;
        return number;
    }

    /**
     * Returns a <CODE>PdfObject</CODE> as a <CODE>PdfName</CODE>,
     * resolving indirect references.
     *
     * The object corresponding to the specified index is retrieved and
     * resolved to a direct object.
     * If it is a <CODE>PdfName</CODE>, it is cast down and returned as such.
     * Otherwise <CODE>null</CODE> is returned.
     *
     * @param idx The index of the <CODE>PdfObject</CODE> to be returned
     * @return the corresponding <CODE>PdfName</CODE> object,
     *   or <CODE>null</CODE>
     */
    public PdfName getAsName(final int idx) {
        PdfName name = null;
        PdfObject orig = getDirectObject(idx);
        if (orig != null && orig.isName())
            name = (PdfName) orig;
        return name;
    }

    /**
     * Returns a <CODE>PdfObject</CODE> as a <CODE>PdfBoolean</CODE>,
     * resolving indirect references.
     *
     * The object corresponding to the specified index is retrieved and
     * resolved to a direct object.
     * If it is a <CODE>PdfBoolean</CODE>, it is cast down and returned as
     * such. Otherwise <CODE>null</CODE> is returned.
     *
     * @param idx The index of the <CODE>PdfObject</CODE> to be returned
     * @return the corresponding <CODE>PdfBoolean</CODE> object,
     *   or <CODE>null</CODE>
     */
    public PdfBoolean getAsBoolean(final int idx) {
        PdfBoolean bool = null;
        PdfObject orig = getDirectObject(idx);
        if (orig != null && orig.isBoolean())
            bool = (PdfBoolean) orig;
        return bool;
    }

    /**
     * Returns a <CODE>PdfObject</CODE> as a <CODE>PdfIndirectReference</CODE>.
     *
     * The object corresponding to the specified index is retrieved.
     * If it is a <CODE>PdfIndirectReference</CODE>, it is cast down and
     * returned as such. Otherwise <CODE>null</CODE> is returned.
     *
     * @param idx The index of the <CODE>PdfObject</CODE> to be returned
     * @return the corresponding <CODE>PdfIndirectReference</CODE> object,
     *   or <CODE>null</CODE>
     */
    public PdfIndirectReference getAsIndirectObject(final int idx) {
        PdfIndirectReference ref = null;
        PdfObject orig = getPdfObject(idx); // not getDirect this time.
        if (orig instanceof PdfIndirectReference)
            ref = (PdfIndirectReference) orig;
        return ref;
    }

	/**
	 * @return an iterator that iterates over the {@link PdfObject}s in this PdfArray.
	 */
	public Iterator<PdfObject> iterator() {
		return arrayList.iterator();
	}
	
	/**
	 * 
	 * @return this PdfArray's values as a long[] 
	 * @since 5.3.5
	 */
	public long[] asLongArray(){
		long[] rslt = new long[size()];
        for (int k = 0; k < rslt.length; ++k) {
            rslt[k] = getAsNumber(k).longValue();
        }
        return rslt;
	}

    /**
     *
     * @return this PdfArray's values as a double[]
     * @since 5.5.6
     */
    public double[] asDoubleArray() {
        double[] rslt = new double[size()];
        for (int k = 0; k < rslt.length; ++k) {
            rslt[k] = getAsNumber(k).doubleValue();
        }
        return rslt;
    }
}

com/itextpdf/text/pdf/PdfArray.java

 

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Release date: 2009-10-09
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