/*
* $Header: /home/cvs/jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/methods/multipart/FilePart.java,v 1.14.2.3 2004/02/22 18:21:15 olegk Exp $
* $Revision: 1.14.2.3 $
* $Date: 2004/02/22 18:21:15 $
*
* ====================================================================
*
* Copyright 2002-2004 The Apache Software Foundation
*
* Licensed 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/>.
*
* [Additional notices, if required by prior licensing conditions]
*
*/
package org.apache.commons.httpclient.methods.multipart;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.httpclient.HttpConstants;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* This class implements a part of a Multipart post object that
* consists of a file.
*
* @author <a href="mailto:[email protected]">Matthew Albright</a>
* @author <a href="mailto:[email protected]">Jeff Dever</a>
* @author <a href="mailto:[email protected]">Adrian Sutton</a>
* @author <a href="mailto:[email protected]">Michael Becke</a>
* @author <a href="mailto:[email protected]">Mark Diggory</a>
* @author <a href="mailto:[email protected]">Mike Bowler</a>
* @author <a href="mailto:[email protected]">Oleg Kalnichevski</a>
*
* @since 2.0
*
*/
public class FilePart extends PartBase {
/** Default content encoding of file attachments. */
public static final String DEFAULT_CONTENT_TYPE = "application/octet-stream";
/** Default charset of file attachments. */
public static final String DEFAULT_CHARSET = HttpConstants.DEFAULT_CONTENT_CHARSET;
/** Default transfer encoding of file attachments. */
public static final String DEFAULT_TRANSFER_ENCODING = "binary";
/** Log object for this class. */
private static final Log LOG = LogFactory.getLog(FilePart.class);
/** Attachment's file name */
protected static final String FILE_NAME = "; filename=";
/** Attachment's file name as a byte array */
protected static final byte[] FILE_NAME_BYTES =
HttpConstants.getAsciiBytes(FILE_NAME);
/** Source of the file part. */
private PartSource source;
/**
* FilePart Constructor.
*
* @param name the name for this part
* @param partSource the source for this part
* @param contentType the content type for this part, if <code>null</code> the
* {@link #DEFAULT_CONTENT_TYPE default} is used
* @param charset the charset encoding for this part, if <code>null</code> the
* {@link #DEFAULT_CHARSET default} is used
*/
public FilePart(String name, PartSource partSource, String contentType, String charset) {
super(
name,
contentType == null ? DEFAULT_CONTENT_TYPE : contentType,
charset == null ? DEFAULT_CHARSET : charset,
DEFAULT_TRANSFER_ENCODING
);
if (partSource == null) {
throw new IllegalArgumentException("Source may not be null");
}
if (partSource.getLength() < 0) {
throw new IllegalArgumentException("Source length must be >= 0");
}
this.source = partSource;
}
/**
* FilePart Constructor.
*
* @param name the name for this part
* @param partSource the source for this part
*/
public FilePart(String name, PartSource partSource) {
this(name, partSource, null, null);
}
/**
* FilePart Constructor.
*
* @param name the name of the file part
* @param file the file to post
*
* @throws FileNotFoundException if the <i>file</i> is not a normal
* file or if it is not readable.
*/
public FilePart(String name, File file)
throws FileNotFoundException {
this(name, new FilePartSource(file), null, null);
}
/**
* FilePart Constructor.
*
* @param name the name of the file part
* @param file the file to post
* @param contentType the content type for this part, if <code>null</code> the
* {@link #DEFAULT_CONTENT_TYPE default} is used
* @param charset the charset encoding for this part, if <code>null</code> the
* {@link #DEFAULT_CHARSET default} is used
*
* @throws FileNotFoundException if the <i>file</i> is not a normal
* file or if it is not readable.
*/
public FilePart(String name, File file, String contentType, String charset)
throws FileNotFoundException {
this(name, new FilePartSource(file), contentType, charset);
}
/**
* FilePart Constructor.
*
* @param name the name of the file part
* @param fileName the file name
* @param file the file to post
*
* @throws FileNotFoundException if the <i>file</i> is not a normal
* file or if it is not readable.
*/
public FilePart(String name, String fileName, File file)
throws FileNotFoundException {
this(name, new FilePartSource(fileName, file), null, null);
}
/**
* FilePart Constructor.
*
* @param name the name of the file part
* @param fileName the file name
* @param file the file to post
* @param contentType the content type for this part, if <code>null</code> the
* {@link #DEFAULT_CONTENT_TYPE default} is used
* @param charset the charset encoding for this part, if <code>null</code> the
* {@link #DEFAULT_CHARSET default} is used
*
* @throws FileNotFoundException if the <i>file</i> is not a normal
* file or if it is not readable.
*/
public FilePart(String name, String fileName, File file, String contentType, String charset)
throws FileNotFoundException {
this(name, new FilePartSource(fileName, file), contentType, charset);
}
/**
* Write the disposition header to the output stream
* @param out The output stream
* @throws IOException If an IO problem occurs
* @see Part#sendDispositionHeader(OutputStream)
*/
protected void sendDispositionHeader(OutputStream out)
throws IOException {
LOG.trace("enter sendDispositionHeader(OutputStream out)");
super.sendDispositionHeader(out);
String filename = this.source.getFileName();
if (filename != null) {
out.write(FILE_NAME_BYTES);
out.write(QUOTE_BYTES);
out.write(HttpConstants.getAsciiBytes(filename));
out.write(QUOTE_BYTES);
}
}
/**
* Write the data in "source" to the specified stream.
* @param out The output stream.
* @throws IOException if an IO problem occurs.
* @see org.apache.commons.httpclient.methods.multipart.Part#sendData(OutputStream)
*/
protected void sendData(OutputStream out) throws IOException {
LOG.trace("enter sendData(OutputStream out)");
if (lengthOfData() == 0) {
// this file contains no data, so there is nothing to send.
// we don't want to create a zero length buffer as this will
// cause an infinite loop when reading.
LOG.debug("No data to send.");
return;
}
byte[] tmp = new byte[4096];
InputStream instream = source.createInputStream();
try {
int len;
while ((len = instream.read(tmp)) >= 0) {
out.write(tmp, 0, len);
}
} finally {
// we're done with the stream, close it
instream.close();
}
}
/**
* Returns the source of the file part.
*
* @return The source.
*/
protected PartSource getSource() {
LOG.trace("enter getSource()");
return this.source;
}
/**
* Return the length of the data.
* @return The length.
* @throws IOException if an IO problem occurs
* @see org.apache.commons.httpclient.methods.multipart.Part#lengthOfData()
*/
protected long lengthOfData() throws IOException {
LOG.trace("enter lengthOfData()");
return source.getLength();
}
}
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