io.netty.handler.codec.http.websocketx.TextWebSocketFrame Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.handler.codec.http.websocketx;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.util.CharsetUtil;

/**
 * Web Socket text frame.
 */
public class TextWebSocketFrame extends WebSocketFrame {

    /**
     * Creates a new empty text frame.
     */
    public TextWebSocketFrame() {
        super(Unpooled.buffer(0));
    }

    /**
     * Creates a new text frame with the specified text string. The final fragment flag is set to true.
     *
     * @param text
     *            String to put in the frame.
     */
    public TextWebSocketFrame(String text) {
        super(fromText(text));
    }

    /**
     * Creates a new text frame with the specified binary data. The final fragment flag is set to true.
     *
     * @param binaryData
     *            the content of the frame.
     */
    public TextWebSocketFrame(ByteBuf binaryData) {
        super(binaryData);
    }

    /**
     * Creates a new text frame with the specified text string. The final fragment flag is set to true.
     *
     * @param finalFragment
     *            flag indicating if this frame is the final fragment
     * @param rsv
     *            reserved bits used for protocol extensions
     * @param text
     *            String to put in the frame.
     */
    public TextWebSocketFrame(boolean finalFragment, int rsv, String text) {
        super(finalFragment, rsv, fromText(text));
    }

    private static ByteBuf fromText(String text) {
        if (text == null || text.isEmpty()) {
            return Unpooled.EMPTY_BUFFER;
        } else {
            return Unpooled.copiedBuffer(text, CharsetUtil.UTF_8);
        }
    }

    /**
     * Creates a new text frame with the specified binary data and the final fragment flag.
     *
     * @param finalFragment
     *            flag indicating if this frame is the final fragment
     * @param rsv
     *            reserved bits used for protocol extensions
     * @param binaryData
     *            the content of the frame.
     */
    public TextWebSocketFrame(boolean finalFragment, int rsv, ByteBuf binaryData) {
        super(finalFragment, rsv, binaryData);
    }

    /**
     * Returns the text data in this frame.
     */
    public String text() {
        return content().toString(CharsetUtil.UTF_8);
    }

    @Override
    public TextWebSocketFrame copy() {
        return (TextWebSocketFrame) super.copy();
    }

    @Override
    public TextWebSocketFrame duplicate() {
        return (TextWebSocketFrame) super.duplicate();
    }

    @Override
    public TextWebSocketFrame retainedDuplicate() {
        return (TextWebSocketFrame) super.retainedDuplicate();
    }

    @Override
    public TextWebSocketFrame replace(ByteBuf content) {
        return new TextWebSocketFrame(isFinalFragment(), rsv(), content);
    }

    @Override
    public TextWebSocketFrame retain() {
        super.retain();
        return this;
    }

    @Override
    public TextWebSocketFrame retain(int increment) {
        super.retain(increment);
        return this;
    }

    @Override
    public TextWebSocketFrame touch() {
        super.touch();
        return this;
    }

    @Override
    public TextWebSocketFrame touch(Object hint) {
        super.touch(hint);
        return this;
    }
}