io.undertow.util.FileUtils 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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/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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 io.undertow.util;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.nio.charset.UnsupportedCharsetException;
import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;
/**
* @author Stuart Douglas
*/
public class FileUtils {
private FileUtils() {
}
public static String readFile(Class testClass, String fileName) {
final URL res = testClass.getResource(fileName);
return readFile(res);
}
public static String readFile(URL url) {
try {
return readFile(url.openStream());
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public static String readFile(InputStream file, String charset) {
try {
Charset charSet = charset != null ? Charset.forName(charset) : StandardCharsets.UTF_8;
return readFile(file, charSet);
} catch (UnsupportedCharsetException e) {
throw new RuntimeException(e);
}
}
/**
* Reads the {@link InputStream file} and converting it to {@link String} using UTF-8 encoding.
*/
public static String readFile(InputStream file) {
return readFile(file, StandardCharsets.UTF_8);
}
/**
* Reads the {@link InputStream file} and converting it to {@link String} using charSet encoding.
*/
public static String readFile(InputStream file, Charset charSet) {
try (BufferedInputStream stream = new BufferedInputStream(file)) {
byte[] buff = new byte[1024];
StringBuilder builder = new StringBuilder();
int read;
while ((read = stream.read(buff)) != -1) {
builder.append(new String(buff, 0, read, charSet));
}
return builder.toString();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public static void deleteRecursive(final Path directory) throws IOException {
if(!Files.isDirectory(directory)) {
return;
}
Files.walkFileTree(directory, new SimpleFileVisitor() {
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
try {
Files.delete(file);
} catch (IOException e) {
// ignored
}
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
try {
Files.delete(dir);
} catch (IOException e) {
// ignored
}
return FileVisitResult.CONTINUE;
}
});
}
}