152 lines
4.2 KiB
C++
152 lines
4.2 KiB
C++
//
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// The developer of the original code and/or files is Tripwire, Inc.
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// Portions created by Tripwire, Inc. are copyright (C) 2000 Tripwire,
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// Inc. Tripwire is a registered trademark of Tripwire, Inc. All rights
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// reserved.
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//
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// This program is free software. The contents of this file are subject
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// to the terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2 of the License, or (at your
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// option) any later version. You may redistribute it and/or modify it
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// only in compliance with the GNU General Public License.
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//
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// This program is distributed in the hope that it will be useful.
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// However, this program is distributed AS-IS WITHOUT ANY
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// WARRANTY; INCLUDING THE IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS
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// FOR A PARTICULAR PURPOSE. Please see the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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//
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// Nothing in the GNU General Public License or any other license to use
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// the code or files shall permit you to use Tripwire's trademarks,
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// service marks, or other intellectual property without Tripwire's
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// prior written consent.
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//
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// If you have any questions, please contact Tripwire, Inc. at either
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// info@tripwire.org or www.tripwire.org.
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//
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///////////////////////////////////////////////////////////////////////////////
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// stringencoder.cpp
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//
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//=========================================================================
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// INCLUDES
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//=========================================================================
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#include "stdutil.h"
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#include "stringencoder.h"
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#include "core/debug.h"
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//=========================================================================
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// METHOD CODE
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//=========================================================================
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//////////////////////////////////////////////////////////////////////////////
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// cCharEncoder
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//////////////////////////////////////////////////////////////////////////////
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void cCharEncoder::EncodeChar( TSTRING::const_iterator& i, TSTRING& strToAppendTo )
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{
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if( *i == mchEncodeMe )
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{
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strToAppendTo += mchEncoded1;
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strToAppendTo += mchEncoded2;
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}
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else if( *i == mchEncoded1 )
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{
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strToAppendTo += mchEncoded1;
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strToAppendTo += mchEncoded1;
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}
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else
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{
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strToAppendTo += *i;
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}
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}
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TCHAR cCharEncoder::DecodeChar( TSTRING::const_iterator& i, TSTRING::const_iterator& end )
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{
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ASSERT( i != end );
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if( *i == mchEncodeMe )
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{
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ASSERT( false );
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return _T('\0');
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}
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else if( *i == mchEncoded1 )
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{
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if( ++i == end )
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{
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ASSERT( false );
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return _T('\0');
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}
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else
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{
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if( *i == mchEncoded1 )
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return mchEncoded1 ;
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else if( *i == mchEncoded2 )
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return mchEncodeMe ;
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else
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{
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ASSERT( false );
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return _T('\0');
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}
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}
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}
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else
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return ( *i );
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}
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//////////////////////////////////////////////////////////////////////////////
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// cStringEncoder
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//////////////////////////////////////////////////////////////////////////////
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TSTRING& cStringEncoder::Encode( TSTRING& inAndOut )
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{
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TSTRING strOut;
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Encode( inAndOut, strOut );
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inAndOut = strOut;
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return inAndOut;
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}
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TSTRING& cStringEncoder::Encode( const TSTRING& in, TSTRING& out )
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{
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out.erase();
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//
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// assume that out will approximately be the size of in
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//
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out.reserve( in.length() );
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for( TSTRING::const_iterator i = in.begin(); i != in.end(); i++ )
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ce.EncodeChar( i, out );
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return out;
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}
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TSTRING& cStringEncoder::Unencode( TSTRING& inAndOut )
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{
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TSTRING strOut;
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Unencode( inAndOut, strOut );
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inAndOut = strOut;
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return inAndOut;
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}
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TSTRING& cStringEncoder::Unencode( const TSTRING& in, TSTRING& out )
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{
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out.erase();
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//
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// assume that out will approximately be the size of in
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//
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out.reserve( in.length() );
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TSTRING::const_iterator end = in.end();
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for( TSTRING::const_iterator i = in.begin(); i != end; i++ )
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out += ce.DecodeChar( i, end );
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return out;
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}
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