org.verapdf.cos.xref.COSXRefTable Maven / Gradle / Ivy

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veraPDF tools for parsing, modifying and creating PDF documents.

There is a newer version: 1.26.1

/**
 * This file is part of veraPDF Parser, a module of the veraPDF project.
 * Copyright (c) 2015, veraPDF Consortium 
 * All rights reserved.
 *
 * veraPDF Parser is free software: you can redistribute it and/or modify
 * it under the terms of either:
 *
 * The GNU General public license GPLv3+.
 * You should have received a copy of the GNU General Public License
 * along with veraPDF Parser as the LICENSE.GPL file in the root of the source
 * tree.  If not, see http://www.gnu.org/licenses/ or
 * https://www.gnu.org/licenses/gpl-3.0.en.html.
 *
 * The Mozilla Public License MPLv2+.
 * You should have received a copy of the Mozilla Public License along with
 * veraPDF Parser as the LICENSE.MPL file in the root of the source tree.
 * If a copy of the MPL was not distributed with this file, you can obtain one at
 * http://mozilla.org/MPL/2.0/.
 */
package org.verapdf.cos.xref;

import org.verapdf.cos.COSKey;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Timur Kamalov
 */
public class COSXRefTable {

    private List all;
    private List n;
    private List f;
    private int size;

    public COSXRefTable() {
        this.all = new ArrayList<>();
        this.n = new ArrayList<>();
        this.f = new ArrayList<>();
        this.size = 1;
    }

    public void set(final List keys) {
        this.all = keys;
        n.clear();
        f.clear();
        int lastIndex = keys.size() - 1;
        this.size = keys.isEmpty() ? 1 : keys.get(lastIndex).getNumber() + 1;
    }

    public COSKey next() {
        return new COSKey(this.size++);
    }

    public void newKey(final COSKey key) {
        this.all.add(key);
        this.n.add(key);
    }

    public void newKey(final List key) {
        this.all.addAll(key);
        this.n.addAll(key);
    }

    public List getAllKeys() {
        return this.all;
    }

}