jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/ws/util/ByteArrayBuffer.java@373ffda63c9a (annotated)

src/share/jaxws_classes/com/sun/xml/internal/ws/util/ByteArrayBuffer.java@373ffda63c9a (annotated)

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

Wed, 27 Apr 2016 01:27:09 +0800

author: aoqi
date: Wed, 27 Apr 2016 01:27:09 +0800
changeset 0: 373ffda63c9a
child 637: 9c07ef4934dd
permissions: -rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/jaxws/
changeset: 657:d47a47f961ee
tag: jdk8u25-b17

 /*
  * Copyright (c) 1997, 2012, 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 / annotate

src/share/jaxws_classes/com/sun/xml/internal/ws/util/ByteArrayBuffer.java@373ffda63c9a (annotated)

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