| /* |
| * Copyright 2015-present Open Networking Foundation |
| * |
| * 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 org.onosproject.rest; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.InputStream; |
| import java.util.Enumeration; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| |
| /** |
| * Resource for serving semi-static resources. |
| */ |
| public class AbstractInjectionResource extends AbstractWebResource { |
| |
| /** |
| * Returns the index into the supplied string where the end of the |
| * specified pattern is located. |
| * |
| * @param string string to split |
| * @param start index where to start looking for pattern |
| * @param stopPattern optional pattern where to stop |
| * @return index where the split should occur |
| */ |
| protected int split(String string, int start, String stopPattern) { |
| int i = stopPattern != null ? string.indexOf(stopPattern, start) : string.length(); |
| checkArgument(i >= 0, "Unable to locate pattern %s", stopPattern); |
| return i + (stopPattern != null ? stopPattern.length() : 0); |
| } |
| |
| /** |
| * Produces an input stream from the bytes of the specified sub-string. |
| * |
| * @param string source string |
| * @param start index where to start stream |
| * @param end index where to end stream |
| * @return input stream |
| */ |
| protected InputStream stream(String string, int start, int end) { |
| return new ByteArrayInputStream(string.substring(start, end).getBytes()); |
| } |
| |
| /** |
| * Auxiliary enumeration to sequence input streams. |
| */ |
| protected class StreamEnumeration implements Enumeration<InputStream> { |
| private final Iterator<InputStream> iterator; |
| |
| public StreamEnumeration(List<InputStream> streams) { |
| this.iterator = streams.iterator(); |
| } |
| |
| @Override |
| public boolean hasMoreElements() { |
| return iterator.hasNext(); |
| } |
| |
| @Override |
| public InputStream nextElement() { |
| return iterator.next(); |
| } |
| } |
| } |