示例#1
0
 public void save(String filename) {
   try {
     Document document = element.getOwnerDocument();
     document.getDocumentElement().normalize();
     TransformerFactory tFactory = TransformerFactory.newInstance();
     tFactory.setAttribute("indent-number", new Integer(4));
     Transformer transformer = tFactory.newTransformer();
     transformer.setOutputProperty(OutputKeys.INDENT, "yes");
     DOMSource source = new DOMSource(document);
     File file = new File(filename);
     StreamResult result = new StreamResult(file);
     transformer.transform(source, result);
   } catch (Exception e) {
     severe("Could not save XML file: " + e.getMessage());
   }
 }
示例#2
0
  /**
   * Format this XML data as a String.
   *
   * @webref xml:method
   * @brief Formats XML data as a String
   * @param indent -1 for a single line (and no declaration), >= 0 for indents and newlines
   * @return the content
   * @see XML#toString()
   */
  public String format(int indent) {
    try {
      // entities = doctype.getEntities()
      boolean useIndentAmount = false;
      TransformerFactory factory = TransformerFactory.newInstance();
      if (indent != -1) {
        try {
          factory.setAttribute("indent-number", indent);
        } catch (IllegalArgumentException e) {
          useIndentAmount = true;
        }
      }
      Transformer transformer = factory.newTransformer();

      // Add the XML declaration at the top if this node is the root and we're
      // not writing to a single line (indent = -1 means single line).
      if (indent == -1 || parent == null) {
        transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
      } else {
        transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
      }

      //      transformer.setOutputProperty(OutputKeys.DOCTYPE_SYSTEM, "sample.dtd");

      transformer.setOutputProperty(OutputKeys.METHOD, "xml");

      //      transformer.setOutputProperty(OutputKeys.CDATA_SECTION_ELEMENTS, "yes");  // huh?

      //      transformer.setOutputProperty(OutputKeys.DOCTYPE_PUBLIC,
      //          "-//W3C//DTD XHTML 1.0 Transitional//EN");
      //      transformer.setOutputProperty(OutputKeys.DOCTYPE_SYSTEM,
      //          "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd");

      // For Android, because (at least 2.3.3) doesn't like indent-number
      if (useIndentAmount) {
        transformer.setOutputProperty(
            "{http://xml.apache.org/xslt}indent-amount", String.valueOf(indent));
      }

      //      transformer.setOutputProperty(OutputKeys.ENCODING,"ISO-8859-1");
      //      transformer.setOutputProperty(OutputKeys.ENCODING,"UTF8");
      transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
      //      transformer.setOutputProperty(OutputKeys.CDATA_SECTION_ELEMENTS

      // Always indent, otherwise the XML declaration will just be jammed
      // onto the first line with the XML code as well.
      transformer.setOutputProperty(OutputKeys.INDENT, "yes");

      //      Properties p = transformer.getOutputProperties();
      //      for (Object key : p.keySet()) {
      //        System.out.println(key + " -> " + p.get(key));
      //      }

      // If you smell something, that's because this code stinks. No matter
      // the settings of the Transformer object, if the XML document already
      // has whitespace elements, it won't bother re-indenting/re-formatting.
      // So instead, transform the data once into a single line string.
      // If indent is -1, then we're done. Otherwise re-run and the settings
      // of the factory will kick in. If you know a better way to do this,
      // please contribute. I've wasted too much of my Sunday on it. But at
      // least the Giants are getting blown out by the Falcons.

      final String decl = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
      final String sep = System.getProperty("line.separator");

      StringWriter tempWriter = new StringWriter();
      StreamResult tempResult = new StreamResult(tempWriter);
      transformer.transform(new DOMSource(node), tempResult);
      String[] tempLines = PApplet.split(tempWriter.toString(), sep);
      //      PApplet.println(tempLines);
      if (tempLines[0].startsWith("<?xml")) {
        // Remove XML declaration from the top before slamming into one line
        int declEnd = tempLines[0].indexOf("?>") + 2;
        // if (tempLines[0].length() == decl.length()) {
        if (tempLines[0].length() == declEnd) {
          // If it's all the XML declaration, remove it
          //          PApplet.println("removing first line");
          tempLines = PApplet.subset(tempLines, 1);
        } else {
          //          PApplet.println("removing part of first line");
          // If the first node has been moved to this line, be more careful
          // tempLines[0] = tempLines[0].substring(decl.length());
          tempLines[0] = tempLines[0].substring(declEnd);
        }
      }
      String singleLine = PApplet.join(PApplet.trim(tempLines), "");
      if (indent == -1) {
        return singleLine;
      }

      // Might just be whitespace, which won't be valid XML for parsing below.
      // https://github.com/processing/processing/issues/1796
      // Since indent is not -1, that means they want valid XML,
      // so we'll give them the single line plus the decl... Lame? sure.
      if (singleLine.trim().length() == 0) {
        // You want whitespace? I've got your whitespace right here.
        return decl + sep + singleLine;
      }

      // Since the indent is not -1, bring back the XML declaration
      // transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");

      StringWriter stringWriter = new StringWriter();
      StreamResult xmlOutput = new StreamResult(stringWriter);
      //      DOMSource source = new DOMSource(node);
      Source source = new StreamSource(new StringReader(singleLine));
      transformer.transform(source, xmlOutput);
      String outgoing = stringWriter.toString();

      // Add the XML declaration to the top if it's not there already
      if (outgoing.startsWith(decl)) {
        int declen = decl.length();
        int seplen = sep.length();
        if (outgoing.length() > declen + seplen
            && !outgoing.substring(declen, declen + seplen).equals(sep)) {
          // make sure there's a line break between the XML decl and the code
          return outgoing.substring(0, decl.length()) + sep + outgoing.substring(decl.length());
        }
        return outgoing;
      } else {
        return decl + sep + outgoing;
      }

    } catch (Exception e) {
      e.printStackTrace();
    }
    return null;
  }