| /** |
| * 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. |
| */ |
| package org.apache.camel.converter; |
| |
| import java.io.BufferedInputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.UnsupportedEncodingException; |
| import java.nio.ByteBuffer; |
| |
| import org.apache.camel.Converter; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.util.IOHelper; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Some core java.nio based |
| * <a href="http://camel.apache.org/type-converter.html">Type Converters</a> |
| * |
| * @version |
| */ |
| @Converter |
| public final class NIOConverter { |
| private static final transient Logger LOG = LoggerFactory.getLogger(NIOConverter.class); |
| |
| /** |
| * Utility classes should not have a public constructor. |
| */ |
| private NIOConverter() { |
| } |
| |
| @Converter |
| public static byte[] toByteArray(ByteBuffer buffer) { |
| return buffer.array(); |
| } |
| |
| @Converter |
| public static String toString(ByteBuffer buffer, Exchange exchange) throws IOException { |
| return IOConverter.toString(buffer.array(), exchange); |
| } |
| |
| @Converter |
| public static ByteBuffer toByteBuffer(byte[] data) { |
| return ByteBuffer.wrap(data); |
| } |
| |
| @Converter |
| public static ByteBuffer toByteBuffer(File file) throws IOException { |
| InputStream in = null; |
| try { |
| byte[] buf = new byte[(int)file.length()]; |
| in = new BufferedInputStream(new FileInputStream(file)); |
| int sizeLeft = (int)file.length(); |
| int offset = 0; |
| while (sizeLeft > 0) { |
| int readSize = in.read(buf, offset, sizeLeft); |
| sizeLeft -= readSize; |
| offset += readSize; |
| } |
| return ByteBuffer.wrap(buf); |
| } finally { |
| IOHelper.close(in, "Failed to close file stream: " + file.getPath(), LOG); |
| } |
| } |
| |
| @Converter |
| public static ByteBuffer toByteBuffer(String value, Exchange exchange) { |
| ByteBuffer buf = ByteBuffer.allocate(value.length()); |
| byte[] bytes = null; |
| if (exchange != null) { |
| String charsetName = exchange.getProperty(Exchange.CHARSET_NAME, String.class); |
| if (charsetName != null) { |
| try { |
| bytes = value.getBytes(charsetName); |
| } catch (UnsupportedEncodingException e) { |
| LOG.warn("Cannot convert the byte to String with the charset " + charsetName, e); |
| } |
| } |
| } |
| if (bytes == null) { |
| bytes = value.getBytes(); |
| } |
| buf.put(bytes); |
| return buf; |
| } |
| |
| @Converter |
| public static ByteBuffer toByteBuffer(Short value) { |
| ByteBuffer buf = ByteBuffer.allocate(2); |
| buf.putShort(value); |
| return buf; |
| } |
| |
| @Converter |
| public static ByteBuffer toByteBuffer(Integer value) { |
| ByteBuffer buf = ByteBuffer.allocate(4); |
| buf.putInt(value); |
| return buf; |
| } |
| |
| @Converter |
| public static ByteBuffer toByteBuffer(Long value) { |
| ByteBuffer buf = ByteBuffer.allocate(8); |
| buf.putLong(value); |
| return buf; |
| } |
| |
| @Converter |
| public static ByteBuffer toByteBuffer(Float value) { |
| ByteBuffer buf = ByteBuffer.allocate(4); |
| buf.putFloat(value); |
| return buf; |
| } |
| |
| @Converter |
| public static ByteBuffer toByteBuffer(Double value) { |
| ByteBuffer buf = ByteBuffer.allocate(8); |
| buf.putDouble(value); |
| return buf; |
| } |
| |
| @Converter |
| public static InputStream toInputStream(ByteBuffer bufferbuffer) { |
| return IOConverter.toInputStream(toByteArray(bufferbuffer)); |
| } |
| } |