com.itextpdf.tool.xml.html.HTMLUtils Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of xmlworker Show documentation
Parses XML to PDF, with CSS support, using iText
There is a newer version: 5.5.13.4
/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2019 iText Group NV
 * Authors: Balder Van Camp, Emiel Ackermann, 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.html;

import com.itextpdf.text.Chunk;

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

/**
 * @author redlab_b
 *
 */
public class HTMLUtils {

	/**
	 * @param str the string to sanitize
	 * @param preserveWhiteSpace to trim or not to trim
	 * @return sanitized string
	 */
	private static List sanitize(final String str, final boolean preserveWhiteSpace, final boolean replaceNonBreakableSpaces) {
		StringBuilder builder = new StringBuilder();
        StringBuilder whitespaceBuilder = new StringBuilder();
		char[] chars = str.toCharArray();
        ArrayList chunkList = new ArrayList();
		boolean isWhitespace = chars.length > 0 ? Character.isWhitespace(chars[0]) : true;
		for (char c : chars) {
			if (isWhitespace && !Character.isWhitespace(c)) {
                if (builder.length() == 0) {
                    chunkList.add(Chunk.createWhitespace(whitespaceBuilder.toString(), preserveWhiteSpace));
                } else {
                    builder.append(preserveWhiteSpace ? whitespaceBuilder : " ");
                }
                whitespaceBuilder = new StringBuilder();
            }

            isWhitespace = Character.isWhitespace(c);
            if (isWhitespace) {
                whitespaceBuilder.append(c);
            } else {
                builder.append(c);
            }
		}

        if (builder.length() > 0) {
            chunkList.add(new Chunk(replaceNonBreakableSpaces ? builder.toString().replace(Character.valueOf('\u00a0'), Character.valueOf(' ')) : builder.toString()));
        }

        if (whitespaceBuilder.length() > 0) {
            chunkList.add(Chunk.createWhitespace(whitespaceBuilder.toString(), preserveWhiteSpace));
        }

		return chunkList;
	}

    public static List sanitize(final String str, final boolean preserveWhiteSpace) {
        return sanitize(str, preserveWhiteSpace, false);
    }
	/**
	 * Sanitize the String for use in in-line tags.
	 * @param str the string to sanitize
	 * @return a sanitized String for use in in-line tags
	 */
	public static List sanitizeInline(final String str, final boolean preserveWhiteSpace) {
		return sanitize(str, preserveWhiteSpace, false);
	}

    public static List sanitizeInline(final String str, final boolean preserveWhiteSpace, final boolean replaceNonBreakableSpaces) {
		return sanitize(str, preserveWhiteSpace, replaceNonBreakableSpaces);
	}
}