001package ezvcard.util;
002
003import org.jsoup.Jsoup;
004import org.jsoup.nodes.Document;
005import org.jsoup.nodes.Element;
006import org.jsoup.select.Elements;
007
008/*
009 Copyright (c) 2012-2023, Michael Angstadt
010 All rights reserved.
011
012 Redistribution and use in source and binary forms, with or without
013 modification, are permitted provided that the following conditions are met: 
014
015 1. Redistributions of source code must retain the above copyright notice, this
016 list of conditions and the following disclaimer. 
017 2. Redistributions in binary form must reproduce the above copyright notice,
018 this list of conditions and the following disclaimer in the documentation
019 and/or other materials provided with the distribution. 
020
021 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
022 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
023 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
024 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
025 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
026 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
027 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
028 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
029 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
030 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
031
032 The views and conclusions contained in the software and documentation are those
033 of the authors and should not be interpreted as representing official policies, 
034 either expressed or implied, of the FreeBSD Project.
035 */
036
037/**
038 * Generic HTML utility methods.
039 * @author Michael Angstadt
040 */
041public class HtmlUtils {
042        /**
043         * Determines whether the given element is a child of one of the given
044         * parent elements.
045         * @param child the child element
046         * @param possibleParents the possible parents
047         * @return true if it is a child, false if not
048         */
049        public static boolean isChildOf(Element child, Elements possibleParents) {
050                for (Element parent : child.parents()) {
051                        if (possibleParents.contains(parent)) {
052                                return true;
053                        }
054                }
055                return false;
056        }
057
058        /**
059         * Converts an HTML string to an HTML element.
060         * @param html the HTML
061         * @return the HTML element
062         */
063        public static Element toElement(String html) {
064                return toElement(html, null);
065        }
066
067        /**
068         * Converts an HTML string to an HTML element.
069         * @param html the HTML
070         * @param baseUrl the base URL
071         * @return the HTML element
072         */
073        public static Element toElement(String html, String baseUrl) {
074                Document d = (baseUrl == null) ? Jsoup.parse(html) : Jsoup.parse(html, baseUrl);
075                return d.getElementsByTag("body").first().children().first();
076        }
077
078        private HtmlUtils() {
079                //hide
080        }
081}