ratpack.util.internal.BufferUtil.java Source code

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Here is the source code for ratpack.util.internal.BufferUtil.java

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/*
 * Copyright 2013 the original author or authors.
 *
 * 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 ratpack.util.internal;

import io.netty.buffer.ByteBuf;
import ratpack.http.MediaType;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.Charset;

import static ratpack.util.ExceptionUtils.uncheck;

public abstract class BufferUtil {

    public static String getText(ByteBuf byteBuf, String charset) {
        return getText(byteBuf, Charset.forName(charset));
    }

    public static String getText(ByteBuf byteBuf, Charset charset) {
        return byteBuf.toString(charset);
    }

    public static String getText(ByteBuf byteBuf, MediaType mediaType) {
        return getText(byteBuf, mediaType.getCharset());
    }

    public static byte[] getBytes(ByteBuf byteBuf) {
        if (byteBuf.hasArray()) {
            return byteBuf.array();
        } else {
            ByteArrayOutputStream baos = new ByteArrayOutputStream(byteBuf.writerIndex());
            try {
                writeTo(byteBuf, baos);
            } catch (IOException e) {
                throw uncheck(e);
            }
            return baos.toByteArray();
        }
    }

    public static void writeTo(ByteBuf byteBuf, OutputStream outputStream) throws IOException {
        byteBuf.resetReaderIndex();
        byteBuf.readBytes(outputStream, byteBuf.writerIndex());
    }

}