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Parses XML to PDF, with CSS support, using iText
There is a newer version: 5.5.13.4
/*
 * $Id: 85b8f64f5404d7d07d19fbdf168f05b2736c27e8 $
 *
 * This file is part of the iText (R) project.
 * Copyright (c) 1998-2015 iText Group NV
 * Authors: Bruno Lowagie, Balder Van Camp, 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:
 * [email protected]
 */
 package com.itextpdf.tool.xml.css.parser.state;

import com.itextpdf.tool.xml.css.parser.CssStateController;
import com.itextpdf.tool.xml.css.parser.State;

/**
 * @author redlab_b
 *
 */
public class Rule implements State {

	private final CssStateController controller;
	private boolean isCss3AtRule;
	private int openParenthesesCount = 0;

	/**
	 * @param cssStateController the controller
	 */
	public Rule(final CssStateController cssStateController) {
		this.controller= cssStateController;
	}

	/* (non-Javadoc)
	 * @see com.itextpdf.tool.xml.css.parser.State#process(char)
	 */
	public void process(final char c) {
		if ('}' == c && isCss3AtRule) {
			--openParenthesesCount;
			if (openParenthesesCount == 0) {
				controller.stateUnknown();
				isCss3AtRule = false;
			}
		} else if (';' == c && !isCss3AtRule) {
			controller.stateUnknown();
		} else if ('{' == c){
			++openParenthesesCount;
			isCss3AtRule = true;
		}
	}

}