| // *************************************************************************************************************************** |
| // * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file * |
| // * distributed with this work for additional information regarding copyright ownership. The ASF licenses this file * |
| // * to you 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.apache.juneau.parser; |
| |
| import java.io.*; |
| |
| /** |
| * Input stream meant to be used as input for stream-based parsers. |
| * |
| * <p> |
| * Keeps track of current byte position. |
| * |
| * <p> |
| * <b>Warning:</b> Not thread safe. |
| */ |
| public class ParserInputStream extends InputStream implements Positionable { |
| |
| private final InputStream is; |
| int pos = 0; |
| |
| /** |
| * Constructor. |
| * |
| * @param pipe The parser input. |
| * @throws IOException Thrown by underlying stream. |
| */ |
| protected ParserInputStream(ParserPipe pipe) throws IOException { |
| this.is = pipe.getInputStream(); |
| pipe.setPositionable(this); |
| } |
| |
| @Override /* InputStream */ |
| public int read() throws IOException { |
| int i = is.read(); |
| if (i > 0) |
| pos++; |
| return i; |
| } |
| |
| @Override /* Positionable */ |
| public Position getPosition() { |
| return new Position(pos); |
| } |
| } |