Parse HTML List

.gitignore

@@ -183,4 +183,4 @@ buildNumber.properties
 *.pdf
 #Allow pdf as source resources for testing
 !openpdf/src/test/resources/*.pdf
-
+!pdf-toolbox/src/test/resources/com/lowagie/examples/html/parseHelloWorld.html

README.md

@@ -83,7 +83,7 @@ Significant [Contributors to OpenPDF](https://github.com/LibrePDF/OpenPDF/graphs
   [@andreasrosdal](https://github.com/andreasrosdal) - Andreas Røsdal - Maintainer of OpenPDF from 1.0 to 1.3.11, now retired from OpenPDF development.  
   [@daviddurand](https://github.com/daviddurand) -  David G. Durand  
   [@tlxtellef](https://github.com/tlxtellef) - Tellef  
-  [@asturio](https://github.com/asturio) - Claudio Clemens  
+  [@asturio](https://github.com/asturio) - Claudio Clemens     
   [@ymasory](https://github.com/ymasory)  
   [@albfernandez](https://github.com/albfernandez) - Alberto Fernández  
   [@noavarice](https://github.com/noavarice)  
@@ -104,6 +104,6 @@ Significant [Contributors to OpenPDF](https://github.com/LibrePDF/OpenPDF/graphs
   [@sixdouglas](https://github.com/sixdouglas) - Douglas Six  
   [@razilein](https://github.com/razilein) - Sita Geßner  
   [@PalAditya](https://github.com/PalAditya) - Aditya Pal       
-
+  [@rammetzger](https://github.com/rammetzger)     
 
 Also, a very special thanks to the iText developers ;)

openpdf/src/main/java/com/lowagie/text/html/simpleparser/HTMLWorker.java

@@ -551,10 +551,16 @@ public void endElement(String tag) {
                     stack.push(obj);
                     return;
                 }
-                if (stack.empty())
+                if (stack.empty()) {
                     document.add((Element) obj);
-                else
-                    ((TextElementArray) stack.peek()).add((Element) obj);
+                } else {
+                    Object peek = stack.peek();
+                    if (peek instanceof com.lowagie.text.List) {
+                        ((com.lowagie.text.List) peek).add((com.lowagie.text.List) obj);
+                    } else {
+                        ((TextElementArray) peek).add((Element) obj);
+                    }
+                }
                 return;
             }
             if (tag.equals(HtmlTags.LISTITEM)) {

pdf-toolbox/src/test/java/com/lowagie/examples/html/ParseHelloHtml.java

@@ -0,0 +1,52 @@
+/*
+ * $Id: HelloHtml.java 3373 2008-05-12 16:21:24Z xlv $
+ *
+ * This code is part of the 'OpenPDF Tutorial'.
+ * You can find the complete tutorial at the following address:
+ * https://github.com/LibrePDF/OpenPDF/wiki/Tutorial
+ *
+ * This code 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.
+ *
+ *
+ */
+
+package com.lowagie.examples.html;
+
+import com.lowagie.text.Document;
+import com.lowagie.text.DocumentException;
+import com.lowagie.text.html.HtmlParser;
+import com.lowagie.text.pdf.PdfWriter;
+
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+/**
+ * Generates a simple 'Hello World' HTML page.
+ *
+ * @author blowagie
+ */
+
+public class ParseHelloHtml {
+
+    /**
+     * Generates an HTML page with the text 'Hello World'
+     *
+     * @param args no arguments needed here
+     */
+    public static void main(String[] args) {
+        System.out.println("Parse Hello World");
+
+        // step 1: creation of a document-object
+        try (Document document = new Document()) {
+            PdfWriter.getInstance(document, new FileOutputStream("parseHelloWorld.pdf"));
+            // step 2: we open the document
+            document.open();
+            // step 3: parsing the HTML document to convert it in PDF
+            HtmlParser.parse(document, ParseHelloHtml.class.getClassLoader().getResourceAsStream("com/lowagie/examples/html/parseHelloWorld.html"));
+        } catch (DocumentException | IOException de) {
+            System.err.println(de.getMessage());
+        }
+    }
+}

pdf-toolbox/src/test/java/com/lowagie/examples/html/ParseNestedHtmlList.java

@@ -0,0 +1,107 @@
+/*
+ * $Id: HelloHtml.java 3373 2008-05-12 16:21:24Z xlv $
+ *
+ * This code is part of the 'OpenPDF Tutorial'.
+ * You can find the complete tutorial at the following address:
+ * https://github.com/LibrePDF/OpenPDF/wiki/Tutorial
+ *
+ * This code 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.
+ *
+ *
+ */
+
+package com.lowagie.examples.html;
+
+import com.lowagie.text.DocumentException;
+import com.lowagie.text.Element;
+import com.lowagie.text.html.simpleparser.HTMLWorker;
+import com.lowagie.text.html.simpleparser.StyleSheet;
+
+import java.io.IOException;
+import java.io.StringReader;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Generates a simple 'Hello World' HTML page.
+ *
+ * @author blowagie
+ */
+
+public class ParseNestedHtmlList {
+
+    /**
+     * Generates an HTML page with the text 'Hello World'
+     *
+     * @param args no arguments needed here
+     */
+    public static void main(String[] args) {
+        System.out.println("Parse Nested HTML List");
+        try {
+            final String htmlText =
+                    "<html>"
+                            + "<body>"
+                            + "<p>What should you say?</p>"
+                            + "<ul>"
+                            + "  <li>Hello</li>"
+                            + "  <li>World</li>"
+                            + "</ul>"
+                            + "<ol>"
+                            + "  <li>Element-1"
+                            + "    <ol>"
+                            + "      <li>Element-1-1</li>"
+                            + "      <li>Element-1-2</li>"
+                            + "    </ol>"
+                            + "  </li>"
+                            + "  <li>Element-2"
+                            + "    <ol>"
+                            + "      <li>Element-2-1"
+                            + "        <ol>"
+                            + "          <li>Element-2-1-1"
+                            + "            <ol>"
+                            + "              <li>Element-2-1-1-1</li>"
+                            + "              <li>Element-2-1-1-2</li>"
+                            + "            </ol>"
+                            + "          </li>"
+                            + "          <li>Element-2-1-2"
+                            + "            <ol>"
+                            + "              <li>Element-2-1-2-1</li>"
+                            + "              <li>Element-2-1-2-2</li>"
+                            + "            </ol>"
+                            + "          </li>"
+                            + "        </ol>"
+                            + "      </li>"
+                            + "      <li>Element-2-2</li>"
+                            + "    </ol>"
+                            + "  </li>"
+                            + "</ol>"
+                            + "</body>"
+                            + "</html>";
+
+            final StringReader reader = new StringReader(htmlText);
+            final StyleSheet styleSheet = new StyleSheet();
+            final Map<String, Object> interfaceProps = new HashMap<>();
+
+            final List<Element> elements = HTMLWorker.parseToList(reader, styleSheet, interfaceProps);
+            printElement("", elements);
+
+        } catch (DocumentException | IOException de) {
+            System.err.println(de.getMessage());
+        }
+    }
+
+    private static void printElement(String depth, List<Element> elements) {
+        for (Element element : elements) {
+            System.out.println(depth + "- element.getClass() = " + element.getClass());
+            if (element instanceof com.lowagie.text.List) {
+                com.lowagie.text.List elementList = (com.lowagie.text.List) element;
+                printElement(depth + "    ", elementList.getItems());
+            } else {
+                System.out.println(depth + "  element = " + element.getChunks().get(0).toString());
+            }
+        }
+    }
+}

pdf-toolbox/src/test/resources/com/lowagie/examples/html/parseHelloWorld.html

@@ -0,0 +1,23 @@
+<html>
+<body>
+<p>What should you say?</p>
+<ul>
+    <li>Hello</li>
+    <li>World</li>
+</ul>
+<ol>
+    <li>Element-1
+        <ol>
+            <li>Element-1-1</li>
+            <li>Element-1-2</li>
+        </ol>
+    </li>
+    <li>Element-2
+        <ol>
+            <li>Element-2-1</li>
+            <li>Element-2-2</li>
+        </ol>
+    </li>
+</ol>
+</body>
+</html>