97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/* $XConsortium: FlexBuffer.cc /main/2 1996/07/18 16:13:49 drk $ */
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#include <iostream>
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using namespace std;
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#include <memory.h>
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#include <string.h>
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#include "FlexBuffer.h"
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//---------------------------------------------------------
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FlexBuffer::FlexBuffer()
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{
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HeadPtr = 0;
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maxSize = pos = 0;
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}
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//---------------------------------------------------------
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//FlexBuffer::~FlexBuffer()
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//{
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// delete HeadPtr;
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//}
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//---------------------------------------------------------
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void
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FlexBuffer::grow(size_t needed)
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{
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if(needed + 1 > maxSize){
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char *born = new char[maxSize = needed * 3 / 2 + 10];
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if(pos){
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memcpy(born, HeadPtr, pos);
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delete [] HeadPtr;
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}
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HeadPtr = born;
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}
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}
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//---------------------------------------------------------
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void
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FlexBuffer::write(const char *d, size_t n)
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{
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grow(pos + n);
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memcpy(HeadPtr + pos, d, n);
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pos += n;
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}
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//---------------------------------------------------------
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void
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FlexBuffer::writeStr(const char *str )
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{
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size_t n = strlen(str);
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grow( pos + n );
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memcpy ( HeadPtr + pos, str, n );
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pos += n;
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}
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//---------------------------------------------------------
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FlexBuffer &
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FlexBuffer::operator+( FlexBuffer & fb )
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{
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grow( pos + fb.GetSize() );
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memcpy(HeadPtr + pos , fb.HeadPtr, fb.GetSize() );
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pos += fb.GetSize();
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return ( *this );
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}
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//---------------------------------------------------------
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ostream &
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operator<< ( ostream &os, FlexBuffer &fb )
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{
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os << fb.GetBuffer();
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return os;
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}
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