#89303# inline memory stream class

1 files changed, 214 insertions, 0 deletions

diff --git a/package/source/zipapi/MemoryByteGrabber.hxx b/package/source/zipapi/MemoryByteGrabber.hxx
new file mode 100644
index 000000000000..d2ab332a8c4b
--- /dev/null
+++ b/package/source/zipapi/MemoryByteGrabber.hxx
@@ -0,0 +1,214 @@
+/*************************************************************************
+ *
+ *  $RCSfile: MemoryByteGrabber.hxx,v $
+ *
+ *  $Revision: 1.1 $
+ *
+ *  last change: $Author: mtg $ $Date: 2001-09-14 14:29:41 $
+ *
+ *  The Contents of this file are made available subject to the terms of
+ *  either of the following licenses
+ *
+ *         - GNU Lesser General Public License Version 2.1
+ *         - Sun Industry Standards Source License Version 1.1
+ *
+ *  Sun Microsystems Inc., October, 2000
+ *
+ *  GNU Lesser General Public License Version 2.1
+ *  =============================================
+ *  Copyright 2000 by Sun Microsystems, Inc.
+ *  901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License version 2.1, as published by the Free Software Foundation.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *  MA  02111-1307  USA
+ *
+ *
+ *  Sun Industry Standards Source License Version 1.1
+ *  =================================================
+ *  The contents of this file are subject to the Sun Industry Standards
+ *  Source License Version 1.1 (the "License"); You may not use this file
+ *  except in compliance with the License. You may obtain a copy of the
+ *  License at http://www.openoffice.org/license.html.
+ *
+ *  Software provided under this License is provided on an "AS IS" basis,
+ *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ *  See the License for the specific provisions governing your rights and
+ *  obligations concerning the Software.
+ *
+ *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ *  Copyright: 2000 by Sun Microsystems, Inc.
+ *
+ *  All Rights Reserved.
+ *
+ *  Contributor(s): Martin Gallwey (gallwey@sun.com)
+ *
+ *
+ ************************************************************************/
+#ifndef _MEMORY_BYTE_GRABBER_HXX_
+#define _MEMORY_BYTE_GRABBER_HXX_
+
+#ifndef _COM_SUN_STAR_IO_XINPUTSTREAM_HPP_
+#include <com/sun/star/io/XInputStream.hpp>
+#endif
+#ifndef _COM_SUN_STAR_IO_XSEEKABLE_HPP_
+#include <com/sun/star/io/XSeekable.hpp>
+#endif
+
+class MemoryByteGrabber
+{
+protected:
+    const com::sun::star::uno::Sequence < sal_Int8 > maBuffer;
+    const sal_Int8 *mpBuffer;
+    sal_Int32 mnCurrent, mnEnd;
+public:
+    MemoryByteGrabber ( const com::sun::star::uno::Sequence < sal_Int8 > & rBuffer )
+    : maBuffer ( rBuffer )
+    , mnCurrent ( 0 )
+    , mpBuffer ( rBuffer.getConstArray() )
+    , mnEnd ( rBuffer.getLength() )
+    {
+    }
+    MemoryByteGrabber()
+    {
+    }
+    const sal_Int8 * getCurrentPos () { return mpBuffer + mnCurrent; }
+
+    // XInputStream chained
+    sal_Int32 SAL_CALL readBytes( com::sun::star::uno::Sequence< sal_Int8 >& aData,
+                                            sal_Int32 nBytesToRead )
+        throw(com::sun::star::io::NotConnectedException, com::sun::star::io::BufferSizeExceededException, com::sun::star::io::IOException, com::sun::star::uno::RuntimeException)
+    {
+        if ( nBytesToRead < 0)
+            throw com::sun::star::io::BufferSizeExceededException();
+
+        if (nBytesToRead + mnCurrent > mnEnd)
+            nBytesToRead = mnEnd - mnCurrent;
+
+        aData.realloc ( nBytesToRead );
+        memcpy ( aData.getArray(), mpBuffer + mnCurrent, nBytesToRead );
+        mnCurrent += nBytesToRead;
+        return nBytesToRead;
+    }
+
+    sal_Int32 SAL_CALL readSomeBytes( com::sun::star::uno::Sequence< sal_Int8 >& aData,
+                                                    sal_Int32 nMaxBytesToRead )
+        throw(com::sun::star::io::NotConnectedException, com::sun::star::io::BufferSizeExceededException, com::sun::star::io::IOException, com::sun::star::uno::RuntimeException)
+    {
+        return readBytes( aData, nMaxBytesToRead );
+    }
+    void SAL_CALL skipBytes( sal_Int32 nBytesToSkip )
+        throw(com::sun::star::io::NotConnectedException, com::sun::star::io::BufferSizeExceededException, com::sun::star::io::IOException, com::sun::star::uno::RuntimeException)
+    {
+        mnCurrent += nBytesToSkip;
+    }
+    sal_Int32 SAL_CALL available(  )
+        throw(com::sun::star::io::NotConnectedException, com::sun::star::io::IOException, com::sun::star::uno::RuntimeException)
+    {
+        return mnEnd - mnCurrent;
+    }
+    void SAL_CALL closeInput(  )
+        throw(com::sun::star::io::NotConnectedException, com::sun::star::io::IOException, com::sun::star::uno::RuntimeException)
+    {
+    }
+
+    // XSeekable chained...
+    sal_Int64 SAL_CALL seek( sal_Int64 location )
+        throw(com::sun::star::lang::IllegalArgumentException, com::sun::star::io::IOException, com::sun::star::uno::RuntimeException)
+    {
+        if ( location < 0 || location > mnEnd )
+            throw com::sun::star::lang::IllegalArgumentException ();
+        mnCurrent = static_cast < sal_Int32 > ( location );
+        return mnCurrent;
+    }
+    sal_Int64 SAL_CALL getPosition(  )
+            throw(com::sun::star::io::IOException, com::sun::star::uno::RuntimeException)
+    {
+        return mnCurrent;
+    }
+    sal_Int64 SAL_CALL getLength(  )
+            throw(com::sun::star::io::IOException, com::sun::star::uno::RuntimeException)
+    {
+        return mnEnd;
+    }
+    MemoryByteGrabber& operator >> (sal_Int8& rInt8)
+    {
+        if (mnCurrent + 1 > mnEnd )
+            rInt8 = 0;
+        else
+            rInt8 = mpBuffer [mnCurrent++] & 0xFF;
+        return *this;
+    }
+    MemoryByteGrabber& operator >> (sal_Int16& rInt16)
+    {
+        if (mnCurrent + 2 > mnEnd )
+            rInt16 = 0;
+        else
+        {
+            rInt16  =   mpBuffer[mnCurrent++] & 0xFF;
+            rInt16 |= ( mpBuffer[mnCurrent++] & 0xFF ) << 8;
+        }
+        return *this;
+    }
+    MemoryByteGrabber& operator >> (sal_Int32& rInt32)
+    {
+        if (mnCurrent + 4 > mnEnd )
+            rInt32 = 0;
+        else
+        {
+            rInt32  =   mpBuffer[mnCurrent++] & 0xFF;
+            rInt32 |= ( mpBuffer[mnCurrent++] & 0xFF ) << 8;
+            rInt32 |= ( mpBuffer[mnCurrent++] & 0xFF ) << 16;
+            rInt32 |= ( mpBuffer[mnCurrent++] & 0xFF ) << 24;
+        }
+        return *this;
+    }
+
+    MemoryByteGrabber& operator >> (sal_uInt8& rInt8)
+    {
+        if (mnCurrent + 1 > mnEnd )
+            rInt8 = 0;
+        else
+            rInt8 = mpBuffer [mnCurrent++] & 0xFF;
+        return *this;
+    }
+    MemoryByteGrabber& operator >> (sal_uInt16& rInt16)
+    {
+        if (mnCurrent + 2 > mnEnd )
+            rInt16 = 0;
+        else
+        {
+            rInt16  =   mpBuffer [mnCurrent++] & 0xFF;
+            rInt16 |= ( mpBuffer [mnCurrent++] & 0xFF ) << 8;
+        }
+        return *this;
+    }
+    MemoryByteGrabber& operator >> (sal_uInt32& rInt32)
+    {
+        if (mnCurrent + 4 > mnEnd )
+            rInt32 = 0;
+        else
+        {
+            rInt32  =   mpBuffer [mnCurrent++] & 0xFF;
+            rInt32 |= ( mpBuffer [mnCurrent++] & 0xFF ) << 8;
+            rInt32 |= ( mpBuffer [mnCurrent++] & 0xFF ) << 16;
+            rInt32 |= ( mpBuffer [mnCurrent++] & 0xFF ) << 24;
+        }
+        return *this;
+    }
+};
+
+#endif