jetbrick.io.IoUtils Maven / Gradle / Ivy
/**
* Copyright 2013-2016 Guoqiang Chen, Shanghai, China. All rights reserved.
*
* Author: Guoqiang Chen
* Email: [email protected]
* WebURL: https://github.com/subchen
*
* 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 jetbrick.io;
import java.io.Closeable;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;
import java.io.Writer;
import java.net.HttpURLConnection;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.URLConnection;
import java.nio.channels.Selector;
import java.nio.charset.Charset;
import java.util.zip.ZipFile;
import jetbrick.io.stream.ReaderInputStream;
import jetbrick.io.stream.UnsafeByteArrayOutputStream;
import jetbrick.io.stream.UnsafeCharArrayWriter;
public final class IoUtils {
private static final int DEFAULT_BUFFER_SIZE = 8192;
public static byte[] toByteArray(File file) {
FileInputStream is = null;
try {
is = new FileInputStream(file);
return toByteArray(is);
} catch (IOException e) {
throw new IllegalStateException(e);
} finally {
closeQuietly(is);
}
}
public static byte[] toByteArray(InputStream is) {
UnsafeByteArrayOutputStream out = new UnsafeByteArrayOutputStream();
try {
byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
int n = 0;
while (-1 != (n = is.read(buffer))) {
out.write(buffer, 0, n);
}
return out.toByteArray();
} catch (IOException e) {
throw new IllegalStateException(e);
} finally {
closeQuietly(out);
}
}
public static byte[] toByteArray(Reader reader, String charsetName) {
return toByteArray(reader, Charset.forName(charsetName));
}
public static byte[] toByteArray(Reader reader, Charset charset) {
try {
InputStream is = new ReaderInputStream(reader, charset);
return toByteArray(is);
} finally {
closeQuietly(reader);
}
}
public static char[] toCharArray(File file, String charsetName) {
return toCharArray(file, Charset.forName(charsetName));
}
public static char[] toCharArray(File file, Charset charset) {
Reader reader = null;
try {
reader = new InputStreamReader(new FileInputStream(file), charset);
return toCharArray(reader);
} catch (IOException e) {
throw new IllegalStateException(e);
} finally {
closeQuietly(reader);
}
}
public static char[] toCharArray(InputStream is, String charsetName) {
return toCharArray(is, Charset.forName(charsetName));
}
public static char[] toCharArray(InputStream is, Charset charset) {
Reader reader = null;
try {
reader = new InputStreamReader(is, charset);
return toCharArray(reader);
} finally {
closeQuietly(reader);
}
}
public static char[] toCharArray(Reader reader) {
UnsafeCharArrayWriter out = new UnsafeCharArrayWriter();
try {
char[] buffer = new char[DEFAULT_BUFFER_SIZE];
int n = 0;
while (-1 != (n = reader.read(buffer))) {
out.write(buffer, 0, n);
}
return out.toCharArray();
} catch (IOException e) {
throw new IllegalStateException(e);
} finally {
closeQuietly(out);
}
}
public static String toString(File file, String charsetName) {
return toString(file, Charset.forName(charsetName));
}
public static String toString(File file, Charset charset) {
Reader reader = null;
try {
reader = new InputStreamReader(new FileInputStream(file), charset);
return toString(reader);
} catch (IOException e) {
throw new IllegalStateException(e);
} finally {
closeQuietly(reader);
}
}
public static String toString(InputStream is, String charsetName) {
return toString(is, Charset.forName(charsetName));
}
public static String toString(InputStream is, Charset charset) {
try {
InputStreamReader reader = new InputStreamReader(is, charset);
return toString(reader);
} finally {
closeQuietly(is);
}
}
public static String toString(Reader reader) {
UnsafeCharArrayWriter out = new UnsafeCharArrayWriter();
try {
char[] buffer = new char[DEFAULT_BUFFER_SIZE];
int n = 0;
while (-1 != (n = reader.read(buffer))) {
out.write(buffer, 0, n);
}
return out.toString();
} catch (IOException e) {
throw new IllegalStateException(e);
} finally {
closeQuietly(out);
}
}
public static void write(byte[] data, File file) {
OutputStream os = null;
try {
os = new FileOutputStream(file);
os.write(data);
} catch (IOException e) {
throw new IllegalStateException(e);
} finally {
IoUtils.closeQuietly(os);
}
}
public static void write(char[] data, File file, String charsetName) {
write(data, file, Charset.forName(charsetName));
}
public static void write(char[] data, File file, Charset charset) {
OutputStream os = null;
try {
os = new FileOutputStream(file);
os.write(new String(data).getBytes(charset));
} catch (IOException e) {
throw new IllegalStateException(e);
} finally {
IoUtils.closeQuietly(os);
}
}
public static void write(String data, File file, String charsetName) {
write(data, file, Charset.forName(charsetName));
}
public static void write(String data, File file, Charset charset) {
OutputStream os = null;
try {
os = new FileOutputStream(file);
os.write(data.getBytes(charset));
} catch (IOException e) {
throw new IllegalStateException(e);
} finally {
IoUtils.closeQuietly(os);
}
}
public static long copy(InputStream input, OutputStream output) throws IOException {
byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
long count = 0L;
int n = 0;
while (-1 != (n = input.read(buffer))) {
output.write(buffer, 0, n);
count += n;
}
return count;
}
public static long copy(InputStream input, Writer output, String charsetName) throws IOException {
return copy(new InputStreamReader(input, Charset.forName(charsetName)), output);
}
public static long copy(InputStream input, Writer output, Charset charset) throws IOException {
return copy(new InputStreamReader(input, charset), output);
}
public static long copy(Reader input, Writer output) throws IOException {
char[] buffer = new char[DEFAULT_BUFFER_SIZE];
long count = 0L;
int n = 0;
while (-1 != (n = input.read(buffer))) {
output.write(buffer, 0, n);
count += n;
}
return count;
}
public static long copy(Reader input, OutputStream output, String charsetName) throws IOException {
return copy(new ReaderInputStream(input, Charset.forName(charsetName)), output);
}
public static long copy(Reader input, OutputStream output, Charset charset) throws IOException {
return copy(new ReaderInputStream(input, charset), output);
}
public static void closeQuietly(Closeable obj) {
try {
if (obj != null) {
obj.close();
}
} catch (IOException e) {
}
}
public static void closeQuietly(ZipFile obj) {
try {
if (obj != null) {
obj.close();
}
} catch (IOException e) {
}
}
public static void closeQuietly(Socket socket) {
try {
if (socket != null) {
socket.close();
}
} catch (IOException e) {
}
}
public static void closeQuietly(ServerSocket socket) {
try {
if (socket != null) {
socket.close();
}
} catch (IOException e) {
}
}
public static void closeQuietly(Selector selector) {
try {
if (selector != null) {
selector.close();
}
} catch (IOException e) {
}
}
public static void closeQuietly(URLConnection conn) {
if (conn != null) {
if (conn instanceof HttpURLConnection) {
((HttpURLConnection) conn).disconnect();
}
}
}
}
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