Source code: com/nwalsh/xalan/Params.java

   // Params.java - Read stylesheet parameters in Xalan
   
   package com.nwalsh.xalan;
   
   import org.apache.xpath.objects.XObject;
   import org.apache.xpath.XPathContext;
   import org.apache.xalan.extensions.ExpressionContext;
   import org.apache.xml.utils.QName;
   
  import javax.xml.transform.TransformerException;
  
  public class Params {
  
    public static String getString(ExpressionContext context,
           String varName) {
      try {
        XObject var = context.getVariableOrParam(new QName(varName));
        if (var != null) {
    return var.toString();
        } else {
    System.out.println("$" + varName + " is not a defined parameter.");
    return "";
        }
      } catch (TransformerException te) {
        System.out.println("Transformer exception getting value of $" + varName);
        return "";
      }
    }
  
    public static int getInt(ExpressionContext context,
           String varName) {
      String stringValue = getString(context, varName);
      if (stringValue != null) {
        try {
    int value = Integer.parseInt(stringValue);
    return value;
        } catch (NumberFormatException e) {
    System.out.println("$" + varName + " is not an integer.");
        }
      }
      return 0;
    }
  
    public static boolean getBoolean(ExpressionContext context,
             String varName) {
      String stringValue = getString(context, varName);
      if (stringValue != null) {
        if (stringValue.equals("0") || stringValue.equals("")) {
    return false;
        } else {
    return true;
        }
      } else {
        return false;
      }
    }
  }