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A reactive Java web server.
/*
* Copyright (c) 1998-2015 Caucho Technology -- all rights reserved
*
* This file is part of Baratine(TM)(TM)
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Baratine is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Baratine is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Baratine; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.v5.io;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Writer;
import java.nio.file.FileVisitResult;
import java.nio.file.FileVisitor;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.Objects;
import java.util.function.Consumer;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* convenience methods for io
*/
public class IoUtil
{
private static final Logger log
= Logger.getLogger(IoUtil.class.getName());
public static String readln(InputStream is)
throws IOException
{
StringBuilder sb = new StringBuilder();
int ch;
while ((ch = is.read()) >= 0 && ch != '\n') {
sb.append((char) ch);
}
return sb.toString();
}
public static int readInt(InputStream is)
throws IOException
{
return ((is.read() << 24)
+ (is.read() << 16)
+ (is.read() << 8)
+ is.read());
}
public static void writeInt(OutputStream os, int v)
throws IOException
{
os.write(v >> 24);
os.write(v >> 16);
os.write(v >> 8);
os.write(v);
}
public static long readLong(InputStream is)
throws IOException
{
return (((long) is.read() << 56)
+ ((long) is.read() << 48)
+ ((long) is.read() << 40)
+ ((long) is.read() << 32)
+ ((long) is.read() << 24)
+ ((long) is.read() << 16)
+ ((long) is.read() << 8)
+ ((long) is.read()));
}
public static void writeLong(OutputStream os, long v)
throws IOException
{
os.write((int) (v >> 56));
os.write((int) (v >> 48));
os.write((int) (v >> 40));
os.write((int) (v >> 32));
os.write((int) (v >> 24));
os.write((int) (v >> 16));
os.write((int) (v >> 8));
os.write((int) v);
}
public static long copy(InputStream is, OutputStream os)
throws IOException
{
TempBuffer tBuf = TempBuffer.allocate();
byte []buffer = tBuf.buffer();
long total = 0;
int sublen;
while ((sublen = is.read(buffer, 0, buffer.length)) > 0) {
os.write(buffer, 0, sublen);
total += sublen;
}
tBuf.freeSelf();
return total;
}
public static long copy(InputStream is, OutputStream os, int len)
throws IOException
{
TempBuffer tBuf = TempBuffer.allocate();
byte []buffer = tBuf.buffer();
long total = 0;
int sublen;
while (len > 0 && (sublen = is.read(buffer, 0, buffer.length)) > 0) {
os.write(buffer, 0, sublen);
//System.out.println("COPY: " + new String(buffer, 0, sublen));
len -= sublen;
total += sublen;
}
tBuf.freeSelf();
return total;
}
public static void close(AutoCloseable is)
{
try {
if (is != null) {
is.close();
}
} catch (Exception e) {
log.log(Level.FINER, e.toString(), e);
}
}
public static void close(OutputStream os)
{
try {
if (os != null)
os.close();
} catch (IOException e) {
log.log(Level.FINER, e.toString(), e);
}
}
public static void close(Writer os)
{
try {
if (os != null)
os.close();
} catch (IOException e) {
log.log(Level.FINER, e.toString(), e);
}
}
public static int readAll(InputStream is,
byte[] buffer, int offset, int length)
throws IOException
{
int readLength = 0;
while (length > 0) {
int sublen = is.read(buffer, offset, length);
if (sublen <= 0) {
return readLength;
}
length -= sublen;
offset += sublen;
readLength += sublen;
}
return readLength;
}
public static void walk(Path path, Consumer consumer)
throws IOException
{
Files.walkFileTree(path, new DirConsumer(consumer));
}
public static void removeAll(Path dir)
throws IOException
{
Files.walkFileTree(dir, new DirRemove());
}
private static class DirRemove implements FileVisitor
{
@Override
public FileVisitResult preVisitDirectory(Path dir,
BasicFileAttributes attrs)
throws IOException
{
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs)
throws IOException
{
Files.delete(file);
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult visitFileFailed(Path file, IOException exc)
throws IOException
{
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult postVisitDirectory(Path dir, IOException exc)
throws IOException
{
Files.delete(dir);
return FileVisitResult.CONTINUE;
}
}
private static class DirConsumer implements FileVisitor
{
private Consumer _consumer;
DirConsumer(Consumer consumer)
{
Objects.requireNonNull(consumer);
_consumer = consumer;
}
@Override
public FileVisitResult preVisitDirectory(Path dir,
BasicFileAttributes attrs)
throws IOException
{
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs)
throws IOException
{
_consumer.accept(file);
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult visitFileFailed(Path file, IOException exc)
throws IOException
{
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult postVisitDirectory(Path dir, IOException exc)
throws IOException
{
return FileVisitResult.CONTINUE;
}
}
}
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