git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4678 6c8d7289-2bf4-0310-a012-ef5d649a1542pull/1/head
orbiter
17 years ago
parent
8aa9fd8f24
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202a3adb3e
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// HttpResponse.java
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// (C) 2008 by Daniel Raap; danielr@users.berlios.de
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// first published 2.4.2008 on http://yacy.net
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//
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// This is a part of YaCy, a peer-to-peer based web search engine
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//
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// $LastChangedDate: 2008-03-14 01:16:04 +0100 (Fr, 14 Mrz 2008) $
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// $LastChangedRevision: 4558 $
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// $LastChangedBy: orbiter $
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//
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// LICENSE
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package de.anomic.http;
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import java.io.BufferedInputStream;
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import java.io.BufferedOutputStream;
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import java.io.BufferedWriter;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.OutputStreamWriter;
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import java.io.UnsupportedEncodingException;
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import de.anomic.server.serverFileUtils;
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/**
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* @author daniel
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*
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*/
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public interface HttpResponse {
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/**
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* returns the header as {@link de.anomic.http.httpHeader}
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* @return
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*/
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public abstract httpHeader getResponseHeader();
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/**
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* get the body of the response
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* @return the data
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* @throws IOException
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*/
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public abstract byte[] getData() throws IOException;
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/**
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* returns a stream to read the body of the response
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*
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* <strong>Important: When done call <code>closeStream()</code>!</strong>
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* @return
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* @throws IOException
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*/
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public abstract InputStream getDataAsStream() throws IOException;
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/**
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* closes the input stream
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*/
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public abstract void closeStream();
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/**
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* "Statuscode SPACE Statusmessage"
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* @return the statusLine
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*/
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public abstract String getStatusLine();
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/**
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* the status code of this response
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* @return
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* @ensure result >= 100 && result <= 999 (is a 3-digit integer)
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*/
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public abstract int getStatusCode();
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/**
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* HTTP version of the response
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* @return
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*/
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public abstract String getHttpVer();
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/**
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* save a response to some storage
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* @author daniel
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*
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*/
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public static class Saver {
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/**
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* copies the body of the response accordingly to hfos to the destination
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* @param res
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* @param hfos OutputStream (raw bytes) or Writer (decode to characters)
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* @param byteStream additional OutputStream where data is stored
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* @throws IOException
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* @throws UnsupportedEncodingException
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*/
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public static void writeContent(HttpResponse res, BufferedOutputStream hfos, BufferedOutputStream byteStream) throws IOException, UnsupportedEncodingException {
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try {
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InputStream data = res.getDataAsStream();
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if (byteStream == null) {
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serverFileUtils.copyToStream(new BufferedInputStream(data), hfos);
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} else {
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serverFileUtils.copyToStreams(new BufferedInputStream(data), hfos, byteStream);
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}
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} finally {
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res.closeStream();
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}
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}
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public static void writeContent(HttpResponse res, BufferedWriter hfos, OutputStream byteStream) throws IOException, UnsupportedEncodingException {
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try {
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InputStream data = res.getDataAsStream();
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String charSet = httpHeader.getCharSet(res.getResponseHeader());
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if (byteStream == null) {
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serverFileUtils.copyToWriter(new BufferedInputStream(data), hfos, charSet);
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} else {
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serverFileUtils.copyToWriters(new BufferedInputStream(data), hfos, new BufferedWriter(new OutputStreamWriter(byteStream, charSet)) , charSet);
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}
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} finally {
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res.closeStream();
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}
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}
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}
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}
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