diff -r 000000000000 -r 373ffda63c9a src/share/jaxws_classes/com/sun/xml/internal/ws/util/ByteArrayBuffer.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/jaxws_classes/com/sun/xml/internal/ws/util/ByteArrayBuffer.java Wed Apr 27 01:27:09 2016 +0800 @@ -0,0 +1,213 @@ +/* + * 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. + * + *

+ * It works in a way similar to {@link ByteArrayOutputStream} but + * this class works better in the following ways: + * + *

    + *
  1. no synchronization + *
  2. offers a {@link #newInputStream()} that creates a new {@link InputStream} + * that won't cause buffer reallocation. + *
  3. less parameter correctness checking + *
  4. offers a {@link #write(InputStream)} method that reads the entirety of the + * given {@link InputStream} without using a temporary buffer. + *
+ * + * @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 copy of exact-size byte[] that represents the written data. + * + *

+ * 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. + * + *

+ * Meant to aid debugging, but no more. + */ + public String toString() { + return new String(buf, 0, count); + } +}