content: /*
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *	  http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.asual.lesscss.loader;
  
  import java.io.IOException;
  
  /**
   * ResourceLoader is used to locate and load stylesheets referenced with @include
   * directive.
   * 
   * @author Rafał Krzewski
   */
  public interface ResourceLoader {
  
  	/**
  	 * Checks if the given resource exists.
  	 * 
  	 * @param path
  	 *            resource path.
  	 * @return {@code true} if the resource exists.
  	 * @throws IOException
  	 *             when i/o error occurs while checking for resource existence.
  	 */
  	public boolean exists(String path) throws IOException;
  
  	/**
  	 * Loads the given resource's contents.
  	 * 
  	 * @param path
  	 *            resource path.
  	 * @param charset
  	 *            character set name, valid with respect to
  	 *            {@link java.nio.charset.Charset}.
  	 * @return resource contents as a string.
  	 * @throws IOException
  	 *             when i/o error occurs while loading the resource, or charset
  	 *             is invalid.
  	 */
  	public String load(String path, String charset) throws IOException;
  }
  