// Copyright 2007, 2008, 2010 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.
package org.apache.tapestry5.util;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.tapestry5.ContentType;
import org.apache.tapestry5.StreamResponse;
import org.apache.tapestry5.services.Response;
public class TextStreamResponse implements StreamResponse
{
private final ContentType contentType;
private final String text;
/**
* Constructor that defaults the character set to "utf-8".
*/
public TextStreamResponse(String contentType, String text)
{
this(contentType, "UTF-8", text);
}
/**
* Constructor allowing the content type and character set to the specified.
*
* @param contentType
* type of content, often "text/xml"
* @param charset
* character set of output, usually "UTF-8"
* @param text
* text to be streamed in the response
* @see org.apache.tapestry5.SymbolConstants#CHARSET
*/
public TextStreamResponse(String contentType, String charset, String text)
{
this(new ContentType(contentType, charset), text);
}
public TextStreamResponse(ContentType contentType, String text)
{
assert contentType != null;
assert text != null;
this.contentType = contentType;
this.text = text;
}
public String getContentType()
{
return contentType.toString();
}
/**
* Converts the text to a byte array (as per the character set, which is usually "UTF-8"), and returns a stream for
* that byte array.
*
* @return the text as a byte array stram
* @throws IOException
*/
public InputStream getStream() throws IOException
{
byte[] textBytes = text.getBytes(contentType.getCharset());
return new ByteArrayInputStream(textBytes);
}
/**
* Does nothing; subclasses may override.
*/
public void prepareResponse(Response response)
{
}
}