package ca.uhn.hl7v2.sourcegen.util;
   
   import java.io.InputStream;
   
   import org.apache.velocity.exception.ResourceNotFoundException;
   import org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader;
   
   public class ResourceLoader extends ClasspathResourceLoader {
   
  	/*
  	 * (non-Javadoc)
  	 * 
  	 * @see org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader#
  	 * getResourceStream(java.lang.String)
  	 */
  	@Override
  	public InputStream getResourceStream(String theArg0) throws ResourceNotFoundException {
  		System.out.println("** Trying to load: " + theArg0);
  		
  		InputStream resourceStream = ResourceLoader.class.getResourceAsStream(theArg0);
  		if (resourceStream == null) {
  			resourceStream = ResourceLoader.class.getResourceAsStream("/" + theArg0);
  		}
  		if (resourceStream == null) {
  			throw new ResourceNotFoundException("Can not find: " + theArg0);
  		}
  
  		return resourceStream;
  	}
  
  	/*
  	 * (non-Javadoc)
  	 * 
  	 * @see
  	 * org.apache.velocity.runtime.resource.loader.ResourceLoader#resourceExists
  	 * (java.lang.String)
  	 */
  	@Override
  	public boolean resourceExists(String theArg0) {
  		System.out.println("** Checking Exists: " + theArg0);
  		boolean resourceExists = super.resourceExists(theArg0);
  		System.out.println("** Exists: " + resourceExists);
  		return resourceExists;
  	}
  	
  	public static void main(String[] args) {
  		new ResourceLoader().getResourceStream("ca/uhn/hl7v2/sourcegen/templates/group.vsm");
  	}
  
  }