/*
* Copyright (c) 2000, 2003, 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 org.jboss.com.sun.corba.se.impl.encoding;
import org.jboss.com.sun.corba.se.spi.ior.iiop.GIOPVersion;
public class CDRInputStream_1_1 extends CDRInputStream_1_0
{
// See notes in CDROutputStream
protected int fragmentOffset = 0;
public GIOPVersion getGIOPVersion()
{
return GIOPVersion.V1_1;
}
// Template method
public CDRInputStreamBase dup()
{
CDRInputStreamBase result = super.dup();
((CDRInputStream_1_1) result).fragmentOffset = this.fragmentOffset;
return result;
}
protected int get_offset()
{
return bbwi.position() + fragmentOffset;
}
protected void alignAndCheck(int align, int n)
{
checkBlockLength(align, n);
// WARNING: Must compute real alignment after calling checkBlockLength since it may move the position
int alignment = computeAlignment(bbwi.position(), align);
if (bbwi.position() + n + alignment > bbwi.buflen)
{
// Some other ORBs may have found a way to send 1.1 fragments which put alignment bytes at the end of a
// fragment
if (bbwi.position() + alignment == bbwi.buflen)
{
bbwi.position(bbwi.position() + alignment);
}
grow(align, n);
// We must recalculate the alignment after a possible fragmentation since the new bbwi.position() (after the
// header) may require a different alignment.
alignment = computeAlignment(bbwi.position(), align);
}
bbwi.position(bbwi.position() + alignment);
}
//
// This can be overridden....
//
protected void grow(int align, int n)
{
bbwi.needed = n;
// Save the size of the current buffer for possible fragmentOffset calculation
int oldSize = bbwi.position();
bbwi = bufferManagerRead.underflow(bbwi);
if (bbwi.fragmented)
{
// By this point we should be guaranteed to have a new fragment whose header has already been unmarshalled.
// bbwi.position() should point to the end of the header.
fragmentOffset += (oldSize - bbwi.position());
markAndResetHandler.fragmentationOccured(bbwi);
// Clear the flag
bbwi.fragmented = false;
}
}
// Mark/reset ---------------------------------------
private class FragmentableStreamMemento extends StreamMemento
{
private int fragmentOffset_;
public FragmentableStreamMemento()
{
super();
fragmentOffset_ = fragmentOffset;
}
}
public Object createStreamMemento()
{
return new FragmentableStreamMemento();
}
public void restoreInternalState(Object streamMemento)
{
super.restoreInternalState(streamMemento);
fragmentOffset = ((FragmentableStreamMemento) streamMemento).fragmentOffset_;
}
// --------------------------------------------------
public char read_wchar()
{
// In GIOP 1.1, interoperability with wchar is limited to 2 byte fixed width encodings. CORBA formal 99-10-07
// 15.3.1.6. WARNING: For UTF-16, this means that there can be no byte order marker, so it must default to big
// endian!
alignAndCheck(2, 2);
// Because of the alignAndCheck, we should be guaranteed 2 bytes of real data.
char[] result = getConvertedChars(2, getWCharConverter());
// Did the provided bytes convert to more than one character? This may come up as more unicode values are
// assigned, and a single 16 bit Java char isn't enough. Better to use strings for i18n purposes.
if (getWCharConverter().getNumChars() > 1)
throw wrapper.btcResultMoreThanOneChar();
return result[0];
}
public String read_wstring()
{
// In GIOP 1.1, interoperability with wchar is limited to 2 byte fixed width encodings. CORBA formal 99-10-07
// 15.3.1.6.
int len = read_long();
// Workaround for ORBs which send string lengths of zero to mean empty string.
//
// IMPORTANT: Do not replace 'new String("")' with "", it may result in a Serialization bug (See
// serialization.zerolengthstring) and bug id: 4728756 for details
if (len == 0)
return new String("");
checkForNegativeLength(len);
// Don't include the two byte null for the following computations. Remember that since we're limited to a 2 byte
// fixed width code set, the "length" was the number of such 2 byte code points plus a 2 byte null.
len = len - 1;
char[] result = getConvertedChars(len * 2, getWCharConverter());
// Skip over the 2 byte null
read_short();
return new String(result, 0, getWCharConverter().getNumChars());
}
}