dorkbox.util.IO Maven / Gradle / Ivy
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/*
* Copyright 2010 dorkbox, llc
*
* 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 dorkbox.util;
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.imageio.stream.ImageInputStream;
@SuppressWarnings({"unused", "Duplicates"})
public
class IO {
/**
* Convenient close for a Closeable.
*/
@SuppressWarnings("Duplicates")
public static
void close(final Closeable closeable) {
if (closeable != null) {
try {
closeable.close();
} catch (IOException e) {
System.err.println("Error closing : " + closeable);
e.printStackTrace();
}
}
}
/**
* Convenient close for a Closeable.
*/
@SuppressWarnings("Duplicates")
public static
void close(final Closeable closeable, final org.slf4j.Logger logger) {
if (closeable != null) {
try {
closeable.close();
} catch (IOException e) {
logger.error("Error closing: {}", closeable, e);
}
}
}
/**
* Convenient close for a Closeable.
*/
@SuppressWarnings("Duplicates")
public static
void closeQuietly(final Closeable closeable) {
if (closeable != null) {
try {
closeable.close();
} catch (IOException ignored) {
}
}
}
/**
* Copy the contents of the input stream to the output stream.
*
* DOES NOT CLOSE THE STEAMS!
*/
public static
T copyStream(final InputStream inputStream, final T outputStream) throws IOException {
byte[] buffer = new byte[4096];
int read;
while ((read = inputStream.read(buffer)) > 0) {
outputStream.write(buffer, 0, read);
}
outputStream.flush();
return outputStream;
}
/**
* Copy the contents of the input stream to the output stream.
*
* DOES NOT CLOSE THE STEAMS!
*/
public static
T copyStream(final ImageInputStream inputStream, final T outputStream) throws IOException {
return copyStream(4096, inputStream, outputStream);
}
/**
* Copy the contents of the input stream to the output stream.
*
* DOES NOT CLOSE THE STEAMS!
*/
public static
T copyStream(final int bufferSize, final ImageInputStream inputStream, final T outputStream) throws IOException {
byte[] buffer = new byte[bufferSize];
int read;
while ((read = inputStream.read(buffer)) > 0) {
outputStream.write(buffer, 0, read);
}
outputStream.flush();
return outputStream;
}
/**
* Copy the contents of the input stream to a new output stream.
*
* DOES NOT CLOSE THE STEAMS!
*/
public static
ByteArrayOutputStream copyStream(final InputStream inputStream) throws IOException {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream(4096);
byte[] buffer = new byte[4096];
int read;
while ((read = inputStream.read(buffer)) > 0) {
outputStream.write(buffer, 0, read);
}
outputStream.flush();
return outputStream;
}
/**
* Copy the contents of the input stream to a new output stream.
*
* DOES NOT CLOSE THE STEAMS!
*/
public static
ByteArrayOutputStream copyStream(final ImageInputStream inputStream) throws IOException {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream(4096);
byte[] buffer = new byte[4096];
int read;
while ((read = inputStream.read(buffer)) > 0) {
outputStream.write(buffer, 0, read);
}
outputStream.flush();
return outputStream;
}
}