| /* |
| * 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.asyncweb.common.codec; |
| |
| import java.nio.charset.CharsetDecoder; |
| |
| import org.apache.asyncweb.common.HttpVersion; |
| import org.apache.mina.core.buffer.IoBuffer; |
| import org.apache.mina.filter.codec.ProtocolDecoderOutput; |
| import org.apache.mina.filter.codec.statemachine.ConsumeToCrLfDecodingState; |
| import org.apache.mina.filter.codec.statemachine.ConsumeToLinearWhitespaceDecodingState; |
| import org.apache.mina.filter.codec.statemachine.DecodingState; |
| import org.apache.mina.filter.codec.statemachine.DecodingStateMachine; |
| import org.apache.mina.filter.codec.statemachine.LinearWhitespaceSkippingState; |
| |
| /** |
| * Decodes a HTTP response line. |
| * |
| * @author The Apache MINA Project (dev@mina.apache.org) |
| */ |
| abstract class HttpResponseLineDecodingState extends DecodingStateMachine { |
| |
| private final CharsetDecoder asciiDecoder = |
| HttpCodecUtils.US_ASCII_CHARSET.newDecoder(); |
| private final CharsetDecoder defaultDecoder = |
| HttpCodecUtils.DEFAULT_CHARSET.newDecoder(); |
| |
| @Override |
| protected DecodingState init() throws Exception { |
| return READ_PROTOCOL_VERSION; |
| } |
| |
| @Override |
| protected void destroy() throws Exception { |
| } |
| |
| private final DecodingState READ_PROTOCOL_VERSION = new HttpVersionDecodingState() { |
| @Override |
| protected DecodingState finishDecode(HttpVersion version, |
| ProtocolDecoderOutput out) throws Exception { |
| out.write(version); |
| return AFTER_READ_PROTOCOL_VERSION; |
| } |
| }; |
| |
| private final DecodingState AFTER_READ_PROTOCOL_VERSION = new LinearWhitespaceSkippingState() { |
| @Override |
| protected DecodingState finishDecode(int skippedBytes) throws Exception { |
| return READ_STATUS_CODE; |
| } |
| }; |
| |
| private final DecodingState READ_STATUS_CODE = new ConsumeToLinearWhitespaceDecodingState() { |
| @Override |
| protected DecodingState finishDecode(IoBuffer product, |
| ProtocolDecoderOutput out) throws Exception { |
| String statusCode = product.getString(asciiDecoder); |
| try { |
| out.write(Integer.parseInt(statusCode)); |
| } catch (NumberFormatException e) { |
| HttpCodecUtils.throwDecoderException("Bad status code"); |
| } |
| return READ_REASON_PHRASE; |
| } |
| }; |
| |
| private final DecodingState READ_REASON_PHRASE = new ConsumeToCrLfDecodingState() { |
| @Override |
| protected DecodingState finishDecode(IoBuffer product, |
| ProtocolDecoderOutput out) throws Exception { |
| out.write(product.getString(defaultDecoder).trim()); |
| return null; |
| } |
| }; |
| } |