/**
* Find the string value of a stylesheet variable or parameter
*
* <p>Returns the string value of <code>varName</code> in the current <code>context</code>.
* Returns the empty string if the variable is not defined.
*
* @param context The current stylesheet context
* @param varName The name of the variable (without the dollar sign)
* @return The string value of the variable
*/
protected static String getVariable(Context context, String varName) {
Value variable = null;
String varString = null;
try {
variable = Extensions.evaluate(context, "$" + varName);
varString = variable.asString();
return varString;
} catch (TransformerException te) {
System.out.println("Undefined variable: " + varName);
return "";
} catch (IllegalArgumentException iae) {
System.out.println("Undefined variable: " + varName);
return "";
}
}
