| /******************************************************************************* |
| * Copyright (c) 2012, 2015 EclipseSource and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * EclipseSource - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.rap.addons.autosuggest.internal.resources; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| |
| |
| /** |
| * Example for a utility that helps reading script file contents from the class path. |
| */ |
| public class ResourceLoaderUtil { |
| |
| private static final String CHARSET = "UTF-8"; |
| private static final ClassLoader CLASSLOADER = ResourceLoaderUtil.class.getClassLoader(); |
| |
| private ResourceLoaderUtil() { |
| // prevent instantiation |
| } |
| |
| /** |
| * Reads the content of a given text resource. |
| * |
| * @param resource the fully qualified name of the resource, without leading slash |
| * @return the contents of the resource as string |
| * @throws IllegalArgumentException if the resource could not be read |
| */ |
| public static String readTextContent( String resource ) { |
| try { |
| return readTextContentChecked( resource ); |
| } catch( IOException ioe ) { |
| throw new IllegalArgumentException( "Failed to read resource: " + resource, ioe ); |
| } |
| } |
| |
| private static String readTextContentChecked( String resource ) throws IOException { |
| InputStream stream = CLASSLOADER.getResourceAsStream( resource ); |
| if( stream == null ) { |
| throw new IllegalArgumentException( "Resource not found: " + resource ); |
| } |
| try { |
| BufferedReader reader = new BufferedReader( new InputStreamReader( stream, CHARSET ) ); |
| return readLines( reader ); |
| } finally { |
| stream.close(); |
| } |
| } |
| |
| private static String readLines( BufferedReader reader ) throws IOException { |
| StringBuilder builder = new StringBuilder(); |
| String line = reader.readLine(); |
| while( line != null ) { |
| builder.append( line ); |
| builder.append( '\n' ); |
| line = reader.readLine(); |
| } |
| return builder.toString(); |
| } |
| |
| } |