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downloading a git-generated archive based on the 'upstream' tag
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1 files changed, 284 insertions, 0 deletions

diff --git a/libjava/classpath/java/io/ByteArrayOutputStream.java b/libjava/classpath/java/io/ByteArrayOutputStream.java
new file mode 100644
index 000000000..9c1a86b7f
--- /dev/null
+++ b/libjava/classpath/java/io/ByteArrayOutputStream.java
@@ -0,0 +1,284 @@
+/* BufferedReader.java
+   Copyright (C) 1998, 1999, 2000, 2001, 2003, 2005
+   Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package java.io;
+
+/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
+ * "The Java Language Specification", ISBN 0-201-63451-1
+ * Status:  Complete to version 1.1.
+ */
+
+/**
+  * This class allows data to be written to a byte array buffer and
+  * and then retrieved by an application.   The internal byte array
+  * buffer is dynamically resized to hold all the data written.  Please
+  * be aware that writing large amounts to data to this stream will
+  * cause large amounts of memory to be allocated.
+  * <p>
+  * The size of the internal buffer defaults to 32 and it is resized
+  * by doubling the size of the buffer.  This default size can be
+  * overridden by using the
+  * <code>gnu.java.io.ByteArrayOutputStream.initialBufferSize</code>
+  * property.
+  * <p>
+  * There is a constructor that specified the initial buffer size and
+  * that is the preferred way to set that value because it it portable
+  * across all Java class library implementations.
+  * <p>
+  * Note that this class also has methods that convert the byte array
+  * buffer to a <code>String</code> using either the system default or an
+  * application specified character encoding.  Thus it can handle
+  * multibyte character encodings.
+  *
+  * @author Aaron M. Renn (arenn@urbanophile.com)
+  * @author Tom Tromey (tromey@cygnus.com)
+  * @date September 24, 1998
+  */
+public class ByteArrayOutputStream extends OutputStream
+{
+  /**
+   * This method initializes a new <code>ByteArrayOutputStream</code>
+   * with the default buffer size of 32 bytes.  If a different initial
+   * buffer size is desired, see the constructor
+   * <code>ByteArrayOutputStream(int size)</code>.  For applications
+   * where the source code is not available, the default buffer size
+   * can be set using the system property
+   * <code>gnu.java.io.ByteArrayOutputStream.initialBufferSize</code>
+   */
+  public ByteArrayOutputStream ()
+  {
+    this (initial_buffer_size);
+  }
+
+  /**
+   * This method initializes a new <code>ByteArrayOutputStream</code> with
+   * a specified initial buffer size.
+   *
+   * @param size The initial buffer size in bytes
+   */
+  public ByteArrayOutputStream (int size)
+  {
+    buf = new byte[size];
+    count = 0;
+  }
+
+  /**
+   * This method discards all of the bytes that have been written to
+   * the internal buffer so far by setting the <code>count</code>
+   * variable to 0.  The internal buffer remains at its currently
+   * allocated size.
+   */
+  public synchronized void reset ()
+  {
+    count = 0;
+  }
+
+  /**
+   * This method returns the number of bytes that have been written to
+   * the buffer so far.  This is the same as the value of the protected
+   * <code>count</code> variable.  If the <code>reset</code> method is
+   * called, then this value is reset as well.  Note that this method does
+   * not return the length of the internal buffer, but only the number
+   * of bytes that have been written to it.
+   *
+   * @return The number of bytes in the internal buffer
+   *
+   * @see #reset()
+   */
+  public int size ()
+  {
+    return count;
+  }
+
+  /**
+   * This method returns a byte array containing the bytes that have been
+   * written to this stream so far.  This array is a copy of the valid
+   * bytes in the internal buffer and its length is equal to the number of
+   * valid bytes, not necessarily to the the length of the current
+   * internal buffer.  Note that since this method allocates a new array,
+   * it should be used with caution when the internal buffer is very large.
+   */
+  public synchronized byte[] toByteArray ()
+  {
+    byte[] ret = new byte[count];
+    System.arraycopy(buf, 0, ret, 0, count);
+    return ret;
+  }
+
+  /**
+   * Returns the bytes in the internal array as a <code>String</code>.  The
+   * bytes in the buffer are converted to characters using the system default
+   * encoding.  There is an overloaded <code>toString()</code> method that
+   * allows an application specified character encoding to be used.
+   *
+   * @return A <code>String</code> containing the data written to this
+   * stream so far
+   */
+  public String toString ()
+  {
+    return new String (buf, 0, count);
+  }
+
+  /**
+   * Returns the bytes in the internal array as a <code>String</code>.  The
+   * bytes in the buffer are converted to characters using the specified
+   * encoding.
+   *
+   * @param enc The name of the character encoding to use
+   *
+   * @return A <code>String</code> containing the data written to this
+   * stream so far
+   *
+   * @exception UnsupportedEncodingException If the named encoding is
+   * not available
+   */
+  public String toString (String enc) throws UnsupportedEncodingException
+  {
+    return new String (buf, 0, count, enc);
+  }
+
+  /**
+   * This method returns the bytes in the internal array as a
+   * <code>String</code>.  It uses each byte in the array as the low
+   * order eight bits of the Unicode character value and the passed in
+   * parameter as the high eight bits.
+   * <p>
+   * This method does not convert bytes to characters in the proper way and
+   * so is deprecated in favor of the other overloaded <code>toString</code>
+   * methods which use a true character encoding.
+   *
+   * @param hibyte The high eight bits to use for each character in
+   * the <code>String</code>
+   *
+   * @return A <code>String</code> containing the data written to this
+   * stream so far
+   *
+   * @deprecated
+   */
+  public String toString (int hibyte)
+  {
+    return new String (buf, hibyte, 0, count);
+  }
+
+  // Resize buffer to accommodate new bytes.
+  private void resize (int add)
+  {
+    if (count + add > buf.length)
+      {
+        int newlen = buf.length * 2;
+        if (count + add > newlen)
+          newlen = count + add;
+        byte[] newbuf = new byte[newlen];
+        System.arraycopy(buf, 0, newbuf, 0, count);
+        buf = newbuf;
+      }
+  }
+
+  /**
+   * This method writes the writes the specified byte into the internal
+   * buffer.
+   *
+   * @param oneByte The byte to be read passed as an int
+   */
+  public synchronized void write (int oneByte)
+  {
+    resize (1);
+    buf[count++] = (byte) oneByte;
+  }
+
+  /**
+   * This method writes <code>len</code> bytes from the passed in array
+   * <code>buf</code> starting at index <code>offset</code> into the
+   * internal buffer.
+   *
+   * @param buffer The byte array to write data from
+   * @param offset The index into the buffer to start writing data from
+   * @param add The number of bytes to write
+   */
+  public synchronized void write (byte[] buffer, int offset, int add)
+  {
+    // If ADD < 0 then arraycopy will throw the appropriate error for
+    // us.
+    if (add >= 0)
+      resize (add);
+    System.arraycopy(buffer, offset, buf, count, add);
+    count += add;
+  }
+
+  /**
+   * This method writes all the bytes that have been written to this stream
+   * from the internal buffer to the specified <code>OutputStream</code>.
+   *
+   * @param out The <code>OutputStream</code> to write to
+   *
+   * @exception IOException If an error occurs
+   */
+  public synchronized void writeTo (OutputStream out) throws IOException
+  {
+    out.write(buf, 0, count);
+  }
+
+  /**
+   * The internal buffer where the data written is stored
+   */
+  protected byte[] buf;
+
+  /**
+   * The number of bytes that have been written to the buffer
+   */
+  protected int count;
+
+  /**
+   * The default initial buffer size.  Specified by the JCL.
+   */
+  private static final int DEFAULT_INITIAL_BUFFER_SIZE = 32;
+
+  // The default buffer size which can be overridden by the user.
+  private static final int initial_buffer_size;
+
+  static
+  {
+    int r
+      = Integer.getInteger ("gnu.java.io.ByteArrayOutputStream.initialBufferSize",
+                            DEFAULT_INITIAL_BUFFER_SIZE).intValue ();
+    if (r <= 0)
+      r = DEFAULT_INITIAL_BUFFER_SIZE;
+    initial_buffer_size = r;
+  }
+}