Java tutorial
/* * #%L * BroadleafCommerce Common Libraries * %% * Copyright (C) 2009 - 2013 Broadleaf Commerce * %% * 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. * #L% */ package org.broadleafcommerce.common.extensibility.context; import org.apache.commons.lang.StringUtils; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.List; /** * @author jfischer */ public class ResourceInputStream extends InputStream { private final InputStream is; private List<String> names = new ArrayList<String>(20); public ResourceInputStream(InputStream is, String name) { this.is = is; names.add(name); } public ResourceInputStream(InputStream is, String name, List<String> previousNames) { this.is = is; names.addAll(previousNames); if (!StringUtils.isEmpty(name)) { names.add(name); } } public List<String> getNames() { return names; } public String getName() { assert names.size() == 1; return names.get(0); } public String toString() { StringBuilder sb = new StringBuilder(100); int size = names.size(); for (int j = 0; j < size; j++) { sb.append(names.get(j)); if (j < size - 1) { sb.append(" : "); } } return sb.toString(); } @Override public int available() throws IOException { return (is == null) ? -1 : is.available(); } @Override public void close() throws IOException { is.close(); } @Override public void mark(int i) { is.mark(i); } @Override public boolean markSupported() { return is.markSupported(); } @Override public int read() throws IOException { return is.read(); } @Override public int read(byte[] bytes) throws IOException { return is.read(bytes); } @Override public int read(byte[] bytes, int i, int i1) throws IOException { return is.read(bytes, i, i1); } @Override public void reset() throws IOException { is.reset(); } @Override public long skip(long l) throws IOException { return is.skip(l); } }