org.verapdf.pd.actions.PDAction Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of parser Show documentation

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.pd.actions;

import org.verapdf.as.ASAtom;
import org.verapdf.cos.COSArray;
import org.verapdf.cos.COSNumber;
import org.verapdf.cos.COSObjType;
import org.verapdf.cos.COSObject;
import org.verapdf.pd.PDObject;

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

/**
 * @author Maksim Bezrukov
 */
public class PDAction extends PDObject {
	public PDAction(COSObject obj) {
		super(obj);
	}

	public ASAtom getSubtype() {
		return getObject().getNameKey(ASAtom.S);
	}

	public List getNext() {
		COSObject next = getKey(ASAtom.NEXT);
		if (next != null) {
			COSObjType type = next.getType();
			List actions = new ArrayList<>();
			if (type == COSObjType.COS_DICT) {
				actions.add(new PDAction(next));
			} else if (type == COSObjType.COS_ARRAY) {
				for (COSObject obj : (COSArray) next.getDirectBase()) {
					if (obj != null && obj.getType() == COSObjType.COS_DICT) {
						actions.add(new PDAction(obj));
					}
				}
			}
			return Collections.unmodifiableList(actions);
		}
		return Collections.emptyList();
	}

	public List getCOSArrayD() {
		COSObject d = getKey(ASAtom.D);
		if (d != null && d.getType() == COSObjType.COS_ARRAY) {
			List numbers = new ArrayList<>();
			for (COSObject obj : (COSArray) d.getDirectBase()) {
				if (obj != null && obj.getType().isNumber()) {
					numbers.add((COSNumber) obj.getDirectBase());
				}
			}
			return Collections.unmodifiableList(numbers);
		}
		return Collections.emptyList();
	}

	public ASAtom getN() {
		return getObject().getNameKey(ASAtom.N);
	}
}