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/io/WindowRandomAccessSource.java

/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2020 iText Group NV
 * Authors: Kevin Day, Bruno Lowagie, 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 License for more
 * details. You should have received a copy of the GNU Affero General 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 License.
 *
 * In accordance with Section 7(b) of the GNU Affero General 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.io;

import java.io.IOException;

/**
 * A RandomAccessSource that wraps another RandomAccessSouce and provides a window of it at a specific offset and over
 * a specific length.  Position 0 becomes the offset position in the underlying source.
 * @since 5.3.5
 */
public class WindowRandomAccessSource implements RandomAccessSource {
	/**
	 * The source
	 */
	private final RandomAccessSource source;
	
	/**
	 * The amount to offset the source by
	 */
	private final long offset;
	
	/**
	 * The length
	 */
	private final long length;
	
	/**
	 * Constructs a new OffsetRandomAccessSource that extends to the end of the underlying source
	 * @param source the source
	 * @param offset the amount of the offset to use
	 */
	public WindowRandomAccessSource(RandomAccessSource source, long offset) {
		this(source, offset, source.length() - offset);
	}

	/**
	 * Constructs a new OffsetRandomAccessSource with an explicit length
	 * @param source the source
	 * @param offset the amount of the offset to use
	 * @param length the number of bytes to be included in this RAS
	 */
	public WindowRandomAccessSource(RandomAccessSource source, long offset, long length) {
		this.source = source;
		this.offset = offset;
		this.length = length;
	}
	
	/**
	 * {@inheritDoc}
	 * Note that the position will be adjusted to read from the corrected location in the underlying source
	 */
	public int get(long position) throws IOException {
		if (position >= length) return -1;
		return source.get(offset + position);
	}

	/**
	 * {@inheritDoc}
	 * Note that the position will be adjusted to read from the corrected location in the underlying source
	 */
	public int get(long position, byte[] bytes, int off, int len) throws IOException {
		if (position >= length) 
			return -1;
		
		long toRead = Math.min(len, length - position);
		return source.get(offset + position, bytes, off, (int)toRead);
	}

	/**
	 * {@inheritDoc}
	 * Note that the length will be adjusted to read from the corrected location in the underlying source
	 */
	public long length() {
		return length;
	}

	/**
	 * {@inheritDoc}
	 */
	public void close() throws IOException {
		source.close();
	}

}

com/itextpdf/text/io/WindowRandomAccessSource.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, 47925👍, 0💬