001 /** 002 * 003 * Licensed to the Apache Software Foundation (ASF) under one or more 004 * contributor license agreements. See the NOTICE file distributed with 005 * this work for additional information regarding copyright ownership. 006 * The ASF licenses this file to You under the Apache License, Version 2.0 007 * (the "License"); you may not use this file except in compliance with 008 * the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 package org.apache.camel.converter; 019 020 import org.apache.camel.Converter; 021 import org.apache.commons.logging.Log; 022 import org.apache.commons.logging.LogFactory; 023 024 import java.io.*; 025 import java.nio.ByteBuffer; 026 027 /** 028 * Some core java.io based 029 * <a href="http://activemq.apache.org/camel/type-converter.html">Type Converters</a> 030 * 031 * @version $Revision: 544115 $ 032 */ 033 @Converter 034 public class IOConverter { 035 private static final transient Log log = LogFactory.getLog(IOConverter.class); 036 037 @Converter 038 public static InputStream toInputStream(File file) throws FileNotFoundException { 039 return new BufferedInputStream(new FileInputStream(file)); 040 } 041 042 @Converter 043 public static BufferedReader toReader(File file) throws FileNotFoundException { 044 return new BufferedReader(new FileReader(file)); 045 } 046 047 @Converter 048 public static OutputStream toOutputStream(File file) throws FileNotFoundException { 049 return new BufferedOutputStream(new FileOutputStream(file)); 050 } 051 052 @Converter 053 public static BufferedWriter toWriter(File file) throws IOException { 054 return new BufferedWriter(new FileWriter(file)); 055 } 056 057 @Converter 058 public static Reader toReader(InputStream in) throws FileNotFoundException { 059 return new InputStreamReader(in); 060 } 061 062 @Converter 063 public static Writer toWriter(OutputStream out) throws FileNotFoundException { 064 return new OutputStreamWriter(out); 065 } 066 067 068 @Converter 069 public static StringReader toReader(String text) { 070 // TODO could we automatically find this? 071 return new StringReader(text); 072 } 073 074 @Converter 075 public static InputStream toInputStream(String text) { 076 return toInputStream(text.getBytes()); 077 } 078 079 @Converter 080 public static byte[] toByteArray(String text) { 081 // TODO could we automatically find this? 082 return text.getBytes(); 083 } 084 085 @Converter 086 public static String toString(byte[] data) { 087 return new String(data); 088 } 089 090 @Converter 091 public static String toString(Reader reader) throws IOException { 092 if (reader instanceof BufferedReader) { 093 return toString((BufferedReader) reader); 094 } 095 else { 096 return toString(new BufferedReader(reader)); 097 } 098 } 099 100 @Converter 101 public static String toString(BufferedReader reader) throws IOException { 102 if (reader == null) { 103 return null; 104 } 105 try { 106 StringBuilder builder = new StringBuilder(); 107 boolean first = true; 108 while (true) { 109 String line = reader.readLine(); 110 if (line == null) { 111 return builder.toString(); 112 } 113 if (first) { 114 first = false; 115 } 116 else { 117 builder.append("\n"); 118 } 119 builder.append(line); 120 } 121 } 122 finally { 123 try { 124 reader.close(); 125 } 126 catch (IOException e) { 127 log.warn("Failed to close stream: "+ e, e); 128 } 129 } 130 } 131 132 @Converter 133 public static String toString(InputStream in) throws IOException { 134 return toString(toReader(in)); 135 } 136 137 @Converter 138 public static InputStream toInputStream(byte[] data) { 139 return new ByteArrayInputStream(data); 140 } 141 }