itextpdf-master/itext/src/main/java/com/itextpdf/text/pdf/PdfCopyFormsImp.java
/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2022 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
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 */
package com.itextpdf.text.pdf;

import java.io.OutputStream;
import java.util.Map;

import com.itextpdf.text.DocumentException;
import com.itextpdf.text.error_messages.MessageLocalization;
import com.itextpdf.text.pdf.AcroFields.Item;

/**
 * Allows you to add one (or more) existing PDF document(s)
 * and add the form(s) of (an)other PDF document(s).
 * @since 2.1.5
 * @deprecated since 5.5.2
 */
class PdfCopyFormsImp extends PdfCopyFieldsImp {

    /**
   * This sets up the output document
   * @param os The Outputstream pointing to the output document
   * @throws DocumentException
   */
    PdfCopyFormsImp(OutputStream os) throws DocumentException {
        super(os);
    }

    /**
     * This method feeds in the source document
     * @param reader The PDF reader containing the source document
     * @throws DocumentException
     */
    public void copyDocumentFields(PdfReader reader) throws DocumentException {
    	if (!reader.isOpenedWithFullPermissions())
            throw new IllegalArgumentException(MessageLocalization.getComposedMessage("pdfreader.not.opened.with.owner.password"));
        if (readers2intrefs.containsKey(reader)) {
            reader = new PdfReader(reader);
        }
        else {
            if (reader.isTampered())
                throw new DocumentException(MessageLocalization.getComposedMessage("the.document.was.reused"));
            reader.consolidateNamedDestinations();
            reader.setTampered(true);
        }
        reader.shuffleSubsetNames();
        readers2intrefs.put(reader, new IntHashtable());

        visited.put(reader, new IntHashtable());

        fields.add(reader.getAcroFields());
        updateCalculationOrder(reader);
    }

    /**
     * This merge fields is slightly different from the mergeFields method
     * of PdfCopyFields.
     */
    @Override
    void mergeFields() {
        for (int k = 0; k < fields.size(); ++k) {
            Map<String, Item> fd = (fields.get(k)).getFields();
            mergeWithMaster(fd);
        }
    }

}
