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//
// ========================================================================
// Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.http;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import java.nio.channels.ReadableByteChannel;
import org.eclipse.jetty.http.MimeTypes.Type;
import org.eclipse.jetty.util.BufferUtil;
import org.eclipse.jetty.util.resource.Resource;
/* ------------------------------------------------------------ */
/** HttpContent created from a {@link Resource}.
* <p>The HttpContent is used to server static content that is not
* cached. So fields and values are only generated as need be an not
* kept for reuse</p>
*/
public class ResourceHttpContent implements HttpContent
{
final Resource _resource;
final String _contentType;
final int _maxBuffer;
HttpContent _gzip;
String _etag;
/* ------------------------------------------------------------ */
public ResourceHttpContent(final Resource resource, final String contentType)
{
this(resource,contentType,-1,null);
}
/* ------------------------------------------------------------ */
public ResourceHttpContent(final Resource resource, final String contentType, int maxBuffer)
{
this(resource,contentType,maxBuffer,null);
}
/* ------------------------------------------------------------ */
public ResourceHttpContent(final Resource resource, final String contentType, int maxBuffer, HttpContent gzip)
{
_resource=resource;
_contentType=contentType;
_maxBuffer=maxBuffer;
_gzip=gzip;
}
/* ------------------------------------------------------------ */
@Override
public String getContentTypeValue()
{
return _contentType;
}
/* ------------------------------------------------------------ */
@Override
public HttpField getContentType()
{
return _contentType==null?null:new HttpField(HttpHeader.CONTENT_TYPE,_contentType);
}
/* ------------------------------------------------------------ */
@Override
public HttpField getContentEncoding()
{
return null;
}
/* ------------------------------------------------------------ */
@Override
public String getContentEncodingValue()
{
return null;
}
/* ------------------------------------------------------------ */
@Override
public String getCharacterEncoding()
{
return _contentType==null?null:MimeTypes.getCharsetFromContentType(_contentType);
}
/* ------------------------------------------------------------ */
@Override
public Type getMimeType()
{
return _contentType==null?null:MimeTypes.CACHE.get(MimeTypes.getContentTypeWithoutCharset(_contentType));
}
/* ------------------------------------------------------------ */
@Override
public HttpField getLastModified()
{
long lm = _resource.lastModified();
return lm>=0?new HttpField(HttpHeader.LAST_MODIFIED,DateGenerator.formatDate(lm)):null;
}
/* ------------------------------------------------------------ */
@Override
public String getLastModifiedValue()
{
long lm = _resource.lastModified();
return lm>=0?DateGenerator.formatDate(lm):null;
}
/* ------------------------------------------------------------ */
@Override
public ByteBuffer getDirectBuffer()
{
if (_resource.length()<=0 || _maxBuffer>0 && _maxBuffer<_resource.length())
return null;
try
{
return BufferUtil.toBuffer(_resource,true);
}
catch(IOException e)
{
throw new RuntimeException(e);
}
}
/* ------------------------------------------------------------ */
@Override
public HttpField getETag()
{
return new HttpField(HttpHeader.ETAG,getETagValue());
}
/* ------------------------------------------------------------ */
@Override
public String getETagValue()
{
return _resource.getWeakETag();
}
/* ------------------------------------------------------------ */
@Override
public ByteBuffer getIndirectBuffer()
{
if (_resource.length()<=0 || _maxBuffer>0 && _maxBuffer<_resource.length())
return null;
try
{
return BufferUtil.toBuffer(_resource,false);
}
catch(IOException e)
{
throw new RuntimeException(e);
}
}
/* ------------------------------------------------------------ */
@Override
public HttpField getContentLength()
{
long l=_resource.length();
return l==-1?null:new HttpField.LongValueHttpField(HttpHeader.CONTENT_LENGTH,_resource.length());
}
/* ------------------------------------------------------------ */
@Override
public long getContentLengthValue()
{
return _resource.length();
}
/* ------------------------------------------------------------ */
@Override
public InputStream getInputStream() throws IOException
{
return _resource.getInputStream();
}
/* ------------------------------------------------------------ */
@Override
public ReadableByteChannel getReadableByteChannel() throws IOException
{
return _resource.getReadableByteChannel();
}
/* ------------------------------------------------------------ */
@Override
public Resource getResource()
{
return _resource;
}
/* ------------------------------------------------------------ */
@Override
public void release()
{
_resource.close();
}
/* ------------------------------------------------------------ */
@Override
public String toString()
{
return String.format("%s@%x{r=%s,gz=%b}",this.getClass().getSimpleName(),hashCode(),_resource,_gzip!=null);
}
/* ------------------------------------------------------------ */
@Override
public HttpContent getGzipContent()
{
return _gzip==null?null:new GzipHttpContent(this,_gzip);
}
}
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