| /* |
| * ==================================================================== |
| * 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. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| */ |
| |
| package org.apache.hc.core5.http.impl.io; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.Iterator; |
| |
| import org.apache.hc.core5.http.FormattedHeader; |
| import org.apache.hc.core5.http.Header; |
| import org.apache.hc.core5.http.HttpException; |
| import org.apache.hc.core5.http.HttpMessage; |
| import org.apache.hc.core5.http.io.HttpMessageWriter; |
| import org.apache.hc.core5.http.io.SessionOutputBuffer; |
| import org.apache.hc.core5.http.message.BasicLineFormatter; |
| import org.apache.hc.core5.http.message.LineFormatter; |
| import org.apache.hc.core5.util.Args; |
| import org.apache.hc.core5.util.CharArrayBuffer; |
| |
| /** |
| * Abstract base class for HTTP message writers that serialize output to |
| * an instance of {@link org.apache.hc.core5.http.io.SessionOutputBuffer}. |
| * |
| * @since 4.0 |
| */ |
| public abstract class AbstractMessageWriter<T extends HttpMessage> implements HttpMessageWriter<T> { |
| |
| private final CharArrayBuffer lineBuf; |
| private final LineFormatter lineFormatter; |
| |
| /** |
| * Creates an instance of AbstractMessageWriter. |
| * |
| * @param formatter the line formatter If {@code null} {@link BasicLineFormatter#INSTANCE} |
| * will be used. |
| * |
| * @since 4.3 |
| */ |
| public AbstractMessageWriter(final LineFormatter formatter) { |
| super(); |
| this.lineFormatter = formatter != null ? formatter : BasicLineFormatter.INSTANCE; |
| this.lineBuf = new CharArrayBuffer(128); |
| } |
| |
| LineFormatter getLineFormatter() { |
| return this.lineFormatter; |
| } |
| |
| /** |
| * Subclasses must override this method to write out the first header line |
| * based on the {@link HttpMessage} passed as a parameter. |
| * |
| * @param message the message whose first line is to be written out. |
| * @param lineBuf line buffer |
| * @throws IOException in case of an I/O error. |
| */ |
| protected abstract void writeHeadLine(T message, CharArrayBuffer lineBuf) throws IOException; |
| |
| @Override |
| public void write(final T message, final SessionOutputBuffer buffer, final OutputStream outputStream) throws IOException, HttpException { |
| Args.notNull(message, "HTTP message"); |
| Args.notNull(buffer, "Session output buffer"); |
| Args.notNull(outputStream, "Output stream"); |
| writeHeadLine(message, this.lineBuf); |
| buffer.writeLine(this.lineBuf, outputStream); |
| for (final Iterator<Header> it = message.headerIterator(); it.hasNext(); ) { |
| final Header header = it.next(); |
| if (header instanceof FormattedHeader) { |
| final CharArrayBuffer chbuffer = ((FormattedHeader) header).getBuffer(); |
| buffer.writeLine(chbuffer, outputStream); |
| } else { |
| this.lineBuf.clear(); |
| lineFormatter.formatHeader(this.lineBuf, header); |
| buffer.writeLine(this.lineBuf, outputStream); |
| } |
| } |
| this.lineBuf.clear(); |
| buffer.writeLine(this.lineBuf, outputStream); |
| } |
| |
| } |