jdk8-mips64-public/jaxws: comparison src/share/jaxws_classes/com/sun/xml/internal/ws/util/ByteArrayBuffer.java

-:88b85470e72c
+:f50545b5e2f1
+/*
+* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+*
+* This code is free software; you can redistribute it and/or modify it
+* under the terms of the GNU General Public License version 2 only, as
+* published by the Free Software Foundation.  Oracle designates this
+* particular file as subject to the "Classpath" exception as provided
+* by Oracle in the LICENSE file that accompanied this code.
+*
+* This code 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.  See the GNU General Public License
+* version 2 for more details (a copy is included in the LICENSE file that
+* accompanied this code).
+*
+* You should have received a copy of the GNU General Public License version
+* 2 along with this work; if not, write to the Free Software Foundation,
+* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+*
+* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+* or visit www.oracle.com if you need additional information or have any
+* questions.
+*/
+package com.sun.xml.internal.ws.util;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+/**
+* Read/write buffer that stores a sequence of bytes.
+*
+* <p>
+* It works in a way similar to {@link ByteArrayOutputStream} but
+* this class works better in the following ways:
+*
+* <ol>
+*  <li>no synchronization
+*  <li>offers a {@link #newInputStream()} that creates a new {@link InputStream}
+*      that won't cause buffer reallocation.
+*  <li>less parameter correctness checking
+*  <li>offers a {@link #write(InputStream)} method that reads the entirety of the
+*      given {@link InputStream} without using a temporary buffer.
+* </ol>
+*
+* @author Kohsuke Kawaguchi
+*/
+public class ByteArrayBuffer extends OutputStream {
+/**
+* The buffer where data is stored.
+*/
+protected byte[] buf;
+/**
+* The number of valid bytes in the buffer.
+*/
+private int count;
+private static final int CHUNK_SIZE = 4096;
+/**
+* Creates a new byte array output stream. The buffer capacity is
+* initially 32 bytes, though its size increases if necessary.
+*/
+public ByteArrayBuffer() {
+this(32);
+}
+/**
+* Creates a new byte array output stream, with a buffer capacity of
+* the specified size, in bytes.
+*
+* @param size the initial size.
+* @throws IllegalArgumentException if size is negative.
+*/
+public ByteArrayBuffer(int size) {
+if (size <= 0)
+throw new IllegalArgumentException();
+buf = new byte[size];
+}
+public ByteArrayBuffer(byte[] data) {
+this(data,data.length);
+}
+public ByteArrayBuffer(byte[] data, int length) {
+this.buf = data;
+this.count = length;
+}
+/**
+* Reads all the data of the given {@link InputStream} and appends them
+* into this buffer.
+*
+* @throws IOException
+*      if the read operation fails with an {@link IOException}.
+*/
+public final void write(InputStream in) throws IOException {
+while(true) {
+int cap = buf.length-count;     // the remaining buffer space
+int sz = in.read(buf,count,cap);
+if(sz<0)    return;     // hit EOS
+count += sz;
+if(cap==sz)
+ensureCapacity(buf.length*2);   // buffer filled up.
+}
+}
+public final void write(int b) {
+int newcount = count + 1;
+ensureCapacity(newcount);
+buf[count] = (byte) b;
+count = newcount;
+}
+public final void write(byte b[], int off, int len) {
+int newcount = count + len;
+ensureCapacity(newcount);
+System.arraycopy(b, off, buf, count, len);
+count = newcount;
+}
+private void ensureCapacity(int newcount) {
+if (newcount > buf.length) {
+byte newbuf[] = new byte[Math.max(buf.length << 1, newcount)];
+System.arraycopy(buf, 0, newbuf, 0, count);
+buf = newbuf;
+}
+}
+public final void writeTo(OutputStream out) throws IOException {
+// Instead of writing out.write(buf, 0, count)
+// Writing it in chunks that would help larger payloads
+// Also if out is System.out on windows, it doesn't show on the console
+// for larger data.
+int remaining = count;
+int off = 0;
+while(remaining > 0) {
+int chunk = (remaining > CHUNK_SIZE) ? CHUNK_SIZE : remaining;
+out.write(buf, off, chunk);
+remaining -= chunk;
+off += chunk;
+}
+}
+public final void reset() {
+count = 0;
+}
+/**
+* Gets the <b>copy</b> of exact-size byte[] that represents the written data.
+*
+* <p>
+* Since this method needs to allocate a new byte[], this method will be costly.
+*
+* @deprecated
+*      this method causes a buffer reallocation. Use it only when
+*      you have to.
+*/
+public final byte[] toByteArray() {
+byte newbuf[] = new byte[count];
+System.arraycopy(buf, 0, newbuf, 0, count);
+return newbuf;
+}
+public final int size() {
+return count;
+}
+/**
+* Gets the underlying buffer that this {@link ByteArrayBuffer} uses.
+* It's never small than its {@link #size()}.
+*
+* Use with caution.
+*/
+public final byte[] getRawData() {
+return buf;
+}
+public void close() throws IOException {
+}
+/**
+* Creates a new {@link InputStream} that reads from this buffer.
+*/
+public final InputStream newInputStream() {
+return new ByteArrayInputStream(buf,0,count);
+}
+/**
+* Creates a new {@link InputStream} that reads a part of this bfufer.
+*/
+public final InputStream newInputStream(int start, int length) {
+return new ByteArrayInputStream(buf,start,length);
+}
+/**
+* Decodes the contents of this buffer by the default encoding
+* and returns it as a string.
+*
+* <p>
+* Meant to aid debugging, but no more.
+*/
+public String toString() {
+return new String(buf, 0, count);
+}
+}

Mercurial > jdk8-mips64-public > jaxws / file comparison

comparison: src/share/jaxws_classes/com/sun/xml/internal/ws/util/ByteArrayBuffer.java

src/share/jaxws_classes/com/sun/xml/internal/ws/util/ByteArrayBuffer.java