| // 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) |
| { |
| |
| } |
| } |