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/*
* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//httpclient/src/java/org/apache/commons/httpclient/methods/multipart/StringPart.java,v 1.11 2004/04/18 23:51:37 jsdever Exp $
* $Revision: 480424 $
* $Date: 2006-11-29 06:56:49 +0100 (Wed, 29 Nov 2006) $
*
* ====================================================================
*
* 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 com.android.internal.http.multipart;
import java.io.OutputStream;
import java.io.IOException;
import org.apache.http.util.EncodingUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Simple string parameter for a multipart post
*
* @author <a href="mailto:mattalbright@yahoo.com">Matthew Albright</a>
* @author <a href="mailto:jsdever@apache.org">Jeff Dever</a>
* @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
* @author <a href="mailto:oleg@ural.ru">Oleg Kalnichevski</a>
*
* @since 2.0
*/
public class StringPart extends PartBase {
/** Log object for this class. */
private static final Log LOG = LogFactory.getLog(StringPart.class);
/** Default content encoding of string parameters. */
public static final String DEFAULT_CONTENT_TYPE = "text/plain";
/** Default charset of string parameters*/
public static final String DEFAULT_CHARSET = "US-ASCII";
/** Default transfer encoding of string parameters*/
public static final String DEFAULT_TRANSFER_ENCODING = "8bit";
/** Contents of this StringPart. */
private byte[] content;
/** The String value of this part. */
private String value;
/**
* Constructor.
*
* @param name The name of the part
* @param value the string to post
* @param charset the charset to be used to encode the string, if <code>null</code>
* the {@link #DEFAULT_CHARSET default} is used
*/
public StringPart(String name, String value, String charset) {
super(
name,
DEFAULT_CONTENT_TYPE,
charset == null ? DEFAULT_CHARSET : charset,
DEFAULT_TRANSFER_ENCODING
);
if (value == null) {
throw new IllegalArgumentException("Value may not be null");
}
if (value.indexOf(0) != -1) {
// See RFC 2048, 2.8. "8bit Data"
throw new IllegalArgumentException("NULs may not be present in string parts");
}
this.value = value;
}
/**
* Constructor.
*
* @param name The name of the part
* @param value the string to post
*/
public StringPart(String name, String value) {
this(name, value, null);
}
/**
* Gets the content in bytes. Bytes are lazily created to allow the charset to be changed
* after the part is created.
*
* @return the content in bytes
*/
private byte[] getContent() {
if (content == null) {
content = EncodingUtils.getBytes(value, getCharSet());
}
return content;
}
/**
* Writes the data to the given OutputStream.
* @param out the OutputStream to write to
* @throws IOException if there is a write error
*/
@Override
protected void sendData(OutputStream out) throws IOException {
LOG.trace("enter sendData(OutputStream)");
out.write(getContent());
}
/**
* Return the length of the data.
* @return The length of the data.
* @see Part#lengthOfData()
*/
@Override
protected long lengthOfData() {
LOG.trace("enter lengthOfData()");
return getContent().length;
}
/* (non-Javadoc)
* @see org.apache.commons.httpclient.methods.multipart.BasePart#setCharSet(java.lang.String)
*/
@Override
public void setCharSet(String charSet) {
super.setCharSet(charSet);
this.content = null;
}
}
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