SingleTemplateLoader.java

package org.ndogen.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;

import freemarker.cache.TemplateLoader;

public class SingleTemplateLoader implements TemplateLoader {
	
	File file;

	public SingleTemplateLoader(File file) {
		super();
		this.file = file;
		
		if(!file.exists()) {
			throw new RuntimeException("Tmplate file does not exist: " + file);
		}
	}

	@Override
	public Object findTemplateSource(String name) throws IOException {
		return file;
	}

	@Override
	public long getLastModified(Object templateSource) {
		if(templateSource != file) {
			throw new RuntimeException("Incompatible template source");
		}
		return file.lastModified();
	}

	@Override
	public Reader getReader(Object templateSource, String encoding)
			throws IOException {
		if(templateSource != file) {
			throw new RuntimeException("Incompatible template source");
		}
		return new BufferedReader(new FileReader(file));
	}

	@Override
	public void closeTemplateSource(Object templateSource) throws IOException {
	}

}