/**
* 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.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import org.apache.camel.ContextTestSupport;
public class IOConverterCharsetTest extends ContextTestSupport {
private static final String CONTENT = "G\u00f6tzend\u00e4mmerung,Joseph und seine Br\u00fcder";
public void testToInputStreamFileWithCharsetUTF8() throws Exception {
switchToDefaultCharset(StandardCharsets.UTF_8);
File file = new File("src/test/resources/org/apache/camel/converter/german.utf-8.txt");
try (InputStream in = IOConverter.toInputStream(file, "UTF-8");
BufferedReader reader = new BufferedReader(new InputStreamReader(in, StandardCharsets.UTF_8));
BufferedReader naiveReader = new BufferedReader(new InputStreamReader(new FileInputStream(file), StandardCharsets.UTF_8))) {
String line = reader.readLine();
String naiveLine = naiveReader.readLine();
assertEquals(naiveLine, line);
assertEquals(CONTENT, line);
}
}
public void testToInputStreamFileWithCharsetUTF8withOtherDefaultEncoding() throws Exception {
switchToDefaultCharset(StandardCharsets.ISO_8859_1);
File file = new File("src/test/resources/org/apache/camel/converter/german.utf-8.txt");
try (InputStream in = IOConverter.toInputStream(file, "UTF-8");
BufferedReader reader = new BufferedReader(new InputStreamReader(in, StandardCharsets.ISO_8859_1));
BufferedReader naiveReader = new BufferedReader(new InputStreamReader(new FileInputStream(file), StandardCharsets.UTF_8))) {
String line = reader.readLine();
String naiveLine = naiveReader.readLine();
assertEquals(naiveLine, line);
assertEquals(CONTENT, line);
}
}
public void testToInputStreamFileWithCharsetLatin1() throws Exception {
switchToDefaultCharset(StandardCharsets.UTF_8);
File file = new File("src/test/resources/org/apache/camel/converter/german.iso-8859-1.txt");
try (InputStream in = IOConverter.toInputStream(file, "ISO-8859-1");
BufferedReader reader = new BufferedReader(new InputStreamReader(in, StandardCharsets.UTF_8));
BufferedReader naiveReader = new BufferedReader(new InputStreamReader(new FileInputStream(file), "ISO-8859-1"))) {
String line = reader.readLine();
String naiveLine = naiveReader.readLine();
assertEquals(naiveLine, line);
assertEquals(CONTENT, line);
}
}
public void testToInputStreamFileDirectByteDumpWithCharsetLatin1() throws Exception {
switchToDefaultCharset(StandardCharsets.UTF_8);
File file = new File("src/test/resources/org/apache/camel/converter/german.iso-8859-1.txt");
try (InputStream in = IOConverter.toInputStream(file, "ISO-8859-1");
InputStream naiveIn = new FileInputStream(file)) {
byte[] bytes = new byte[8192];
in.read(bytes);
byte[] naiveBytes = new byte[8192];
naiveIn.read(naiveBytes);
assertFalse("both input streams deliver the same byte sequence", Arrays.equals(naiveBytes, bytes));
}
}
public void testToReaderFileWithCharsetUTF8() throws Exception {
File file = new File("src/test/resources/org/apache/camel/converter/german.utf-8.txt");
try (BufferedReader reader = IOConverter.toReader(file, "UTF-8");
BufferedReader naiveReader = new BufferedReader(new InputStreamReader(new FileInputStream(file), StandardCharsets.UTF_8))) {
String line = reader.readLine();
String naiveLine = naiveReader.readLine();
assertEquals(naiveLine, line);
assertEquals(CONTENT, line);
}
}
public void testToReaderFileWithCharsetLatin1() throws Exception {
File file = new File("src/test/resources/org/apache/camel/converter/german.iso-8859-1.txt");
try (BufferedReader reader = IOConverter.toReader(file, "ISO-8859-1");
BufferedReader naiveReader = new BufferedReader(new InputStreamReader(new FileInputStream(file), "ISO-8859-1"))) {
String line = reader.readLine();
String naiveLine = naiveReader.readLine();
assertEquals(naiveLine, line);
assertEquals(CONTENT, line);
}
}
private static void switchToDefaultCharset(final Charset charset) {
IOConverter.defaultCharset = () -> charset;
}
}