cvs commit: xml-xalan/java/src/org/apache/xalan/lib Extensions.java

[garyp]

garyp       00/10/29 10:25:26

  Modified:    java/src/org/apache/xalan/lib Extensions.java
  Log:
  Implement tokenize extension function.
  
  Revision  Changes    Path
  1.4       +46 -1     xml-xalan/java/src/org/apache/xalan/lib/Extensions.java
  
  Index: Extensions.java
  ===================================================================
  RCS file: /home/cvs/xml-xalan/java/src/org/apache/xalan/lib/Extensions.java,v
  retrieving revision 1.3
  retrieving revision 1.4
  diff -u -r1.3 -r1.4
  --- Extensions.java   2000/10/17 23:33:32     1.3
  +++ Extensions.java   2000/10/29 18:25:25     1.4
  @@ -69,8 +69,8 @@
   import org.apache.xpath.XPathContext;
   import org.xml.sax.SAXNotSupportedException;
   import java.util.Hashtable;
  +import java.util.StringTokenizer;
   
  -
   import org.apache.xalan.extensions.ExpressionContext;
   
   /**
  @@ -237,5 +237,50 @@
       else
         throw new SAXNotSupportedException("Invalid context passed to evaluate 
" + myContext);
        }  
  +
  +     /**
  +      * Returns a NodeSet containing one text node for each token in the 
first argument.
  +   * Delimiters are specified in the second argument.
  +   * Tokens are determined by a call to <code>StringTokenizer</code>.
  +   * If the first argument is an empty string or contains only delimiters, 
the result
  +   * will be an empty NodeSet.
  +   * Contributed to XalanJ1 by <a href="mailto:[EMAIL PROTECTED]">Benoit 
Cerrina</a>.  
  +      * @param myContext an <code>ExpressionContext</code> passed in by the
  +   *                  extension mechanism.  This must be an XPathContext.
  +      * @param toTokenize The string to be split into text tokens.
  +   * @param delims The delimiters to use.
  +      * @return a NodeSet as described above.
  +   *
  +      */     
  +     public static NodeSet tokenize(ExpressionContext myContext, String 
toTokenize, String delims)
  +     {
  +    Document lDoc = myContext.getContextNode().getOwnerDocument();
  +    StringTokenizer lTokenizer = new StringTokenizer(toTokenize, delims);
  +    NodeSet resultSet = new NodeSet();
  +    while (lTokenizer.hasMoreTokens())
  +    {
  +      resultSet.addNode(lDoc.createTextNode(lTokenizer.nextToken()));
  +    }
  +    return resultSet;
  +}  
  +
  +     /**
  +      * Returns a NodeSet containing one text node for each token in the 
first argument.
  +   * Delimiters are whitespace.  That is, the delimiters that are used are 
tab (&#x09),
  +   * linefeed (&#x0A), return (&#x0D), and space (&#x20).
  +   * Tokens are determined by a call to <code>StringTokenizer</code>.
  +   * If the first argument is an empty string or contains only delimiters, 
the result
  +   * will be an empty NodeSet.
  +   * Contributed to XalanJ1 by <a href="mailto:[EMAIL PROTECTED]">Benoit 
Cerrina</a>.  
  +      * @param myContext an <code>ExpressionContext</code> passed in by the
  +   *                  extension mechanism.  This must be an XPathContext.
  +      * @param toTokenize The string to be split into text tokens.
  +      * @return a NodeSet as described above.
  +   *
  +      */     
  +     public static NodeSet tokenize(ExpressionContext myContext, String 
toTokenize)
  +     {
  +    return tokenize(myContext, toTokenize, " \t\n\r");
  +  }  
   
   }