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UA-.NETStandard/ComIOP/Wrapper/Common/COpcTextReader.h
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/* ========================================================================
* Copyright (c) 2005-2019 The OPC Foundation, Inc. All rights reserved.
*
* OPC Foundation MIT License 1.00
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* The complete license agreement can be found here:
* http://opcfoundation.org/License/MIT/1.00/
* ======================================================================*/
#ifndef _COpcTextReader_H
#define _COpcTextReader_H
#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000
#include "OpcDefs.h"
#include "COpcText.h"
//==============================================================================
// CLASS: COpcTextReader
// PURPOSE: Extracts tokens from a stream.
class OPCUTILS_API COpcTextReader
{
OPC_CLASS_NEW_DELETE();
public:
//==========================================================================
// Operators
// Constructor
COpcTextReader(const COpcString& cBuffer);
COpcTextReader(LPCSTR szBuffer, UINT uLength = -1);
COpcTextReader(LPCWSTR szBuffer, UINT uLength = -1);
// Destructor
~COpcTextReader();
//==========================================================================
// Public Methods
// GetNext
bool GetNext(COpcText& cText);
// GetBuf
LPCWSTR GetBuf() const { return m_szBuf; }
private:
//==========================================================================
// Private Methods
// ReadData
bool ReadData();
// FindToken
bool FindToken(COpcText& cText);
// FindLiteral
bool FindLiteral(COpcText& cText);
// FindNonWhitespace
bool FindNonWhitespace(COpcText& cText);
// FindWhitespace
bool FindWhitespace(COpcText& cText);
// FindDelimited
bool FindDelimited(COpcText& cText);
// FindEnclosed
bool FindEnclosed(COpcText& cText);
// CheckForHalt
bool CheckForHalt(COpcText& cText, UINT uIndex);
// CheckForDelim
bool CheckForDelim(COpcText& cText, UINT uIndex);
// SkipWhitespace
UINT SkipWhitespace(COpcText& cText);
// CopyData
void CopyData(COpcText& cText, UINT uStart, UINT uEnd);
//==========================================================================
// Private Members
LPWSTR m_szBuf;
UINT m_uLength;
UINT m_uEndOfData;
};
#endif //ndef _COpcTextReader_H