cvs commit: xml-cocoon2/src/scratchpad/schecoon/src/org/apache/cocoon/scheme/sitemap XMLtoSXML.java

[ovidiu]

ovidiu      02/01/18 16:58:12

  Added:       src/scratchpad/schecoon/src/org/apache/cocoon/scheme/sitemap
                        XMLtoSXML.java
  Log:
  SAX ContentHandler for translating XML to SXML (Scheme XML representation).
  
  Revision  Changes    Path
  1.1                  
xml-cocoon2/src/scratchpad/schecoon/src/org/apache/cocoon/scheme/sitemap/XMLtoSXML.java
  
  Index: XMLtoSXML.java
  ===================================================================
  package org.apache.cocoon.scheme.sitemap;
  
  import org.apache.cocoon.xml.AbstractXMLConsumer;
  import org.xml.sax.Attributes;
  import org.xml.sax.Locator;
  import org.xml.sax.SAXException;
  
  /**
   * SAX content handler for translating an XML document in the SXML
   * (Scheme XML) representation.
   *
   * @author <a href="mailto:[EMAIL PROTECTED]";>Ovidiu Predescu</a>
   * @since January 16, 2002
   */
  public class XMLtoSXML extends AbstractXMLConsumer
  {
    protected StringBuffer content = new StringBuffer(100000);
    Locator locator;
  
    public XMLtoSXML() {}
  
    public String getContent()
    {
      return content.toString();
    }
  
    public void startDocument()
      throws SAXException
    {
      content.append("(quote ");
    }
  
    public void endDocument()
      throws SAXException
    {
      content.append(")");
    }
  
    public void startElement(String uri, String loc, String qName, Attributes a)
      throws SAXException
    {
      content.append("(" + loc + " (@ ");
      for (int i = 0, size = a.getLength(); i < size; i++) {
        String attrName = a.getQName(i);
  
        if (!attrName.startsWith("xmlns:"))
          content.append("(" +  attrName + " \"" + a.getValue(i) + "\") ");
      }
      content.append("(*line* " + locator.getLineNumber() + ") ");
      content.append(") ");
    }
  
    public void endElement(String uri, String loc, String raw)
      throws SAXException
    {
      content.append(") ");
    }
  
    public void characters(char ch[], int start, int len)
      throws SAXException
    {
      content.append(escape(ch, start, len));
    }
  
    public void setDocumentLocator(Locator locator)
    {
      this.locator = locator;
    }
  
    /**
     * Escapes characters in <code>chars</code> as follows:
     *
     * <ul>
     *  <li><pre>\  -> \\</pre></li>
     *  <li><pre>"  -> \"</pre></li>
     * </ul>
     *
     * @param chars a <code>char[]</code> value
     */
    public static String escape(char[] chars, int start, int len)
    {
      if (chars == null)
        return "";
      
      // Assume about 1% of the characters need to be escaped; probably
      // a safe bet in most cases. Otherwise the buffer is increased
      // automatically by the StringBuffer.
      StringBuffer escaped = new StringBuffer((int)(chars.length * 1.01));
  
      for (int i = start; i < len; i++) {
        char ch = chars[i];
        switch (ch) {
        case '\\':
          escaped.append("\\\\\\\\");
          break;
        case '"':
          escaped.append("\\\\\"");
          break;
        default:
          escaped.append(ch);
          break;
        }
      }
  
      return escaped.toString();
    }
  }
  
  
  

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